Details of the Researcher

PHOTO

Michio Kondo
Section
Graduate School of Life Sciences
Job title
Professor
Degree
  • Doctor(Science) (Kyoto University)

  • Master(Science) (Kyoto University)

Profile

An ecosystem is a vast and intricate system driven by diverse organisms interacting with each other. To comprehend the essence of ecological phenomena and uncover the underlying common principles, various tools are employed, including analytical techniques utilizing mathematical and statistical models, ecological monitoring data obtained from methods such as underwater visual observation, environmental DNA analysis, and acoustic observations in the marine realm. Additionally, a diverse array of tools, including experiments involving bacteria and insects within artificial ecosystems, are wielded. Particularly in recent times, there is a growing aspiration to pioneer new research domains that enable the prediction, control, and design of ecosystems.

Research History 7

  • 2024/01 - Present
    Advanced Institute for Marine Ecosystem Change (WPI-AIMEC) Ecological Complexity Research Unit AIMEC Unit Leader

  • 2018/04 - Present
    Tohoku University Graduate School of Life Sciences Professor

  • 2013/04 - 2018/03
    Ryukoku University Faculty of Science and Technology Professor

  • 2008/04 - 2013/03
    Ryukoku University Faculty of Science and Technology Associate Professor

  • 2008/04 - 2011/03
    JST Sakigake Research Fellow

  • 2004/04 - 2008/03
    Ryukoku University Faculty of Science and Technology Lecturer

  • 2001/04 - 2004/03
    JSPS Research Fellowship for Young Scientists

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Education 2

  • Kyoto University Faculty of Science Division fo Biological Sciences

    1998/04 - 2001/03

  • Kyoto University Faculty of Science Division fo Biological Sciences

    1996/04 - 1998/03

Committee Memberships 30

  • 個体群生態学会 理事

    2019/09 - Present

  • 環境省 絶滅危惧種分布重要地域抽出のための環境DNA分析技術を用いた淡水魚類調査手法の標準化・一般化に関する検討会委員

    2018/04 - 2023/03

  • 一般社団法人 環境DNA学会 代表理事

    2018/04 - 2022/09

  • The eDNA Society Director

    2022/09 - Present

  • 日本数理生物学会 運営委員

    2019/01 - Present

  • 環境DNA学会 環境DNA技術標準化委員会委員

    2018/04 - Present

  • 日本生物多様性観測ネットワーク (JBON) 運営チームメンバー

    2023/04 - 2025/03

  • Ecological Society of Japan Director

    2020/03 - 2024/03

  • 文部科学省 「海洋情報把握技術開発」生物遺伝子課題運営委員

    2019/04 - 2024/03

  • Population Ecology (Springer) Editorial Board

    2007/04 - 2022/08

  • 個体群生態学会 改革Working Group委員

    2018/04 - 2019/03

  • 日本生態学会 理事・代議員

    2016/04 - 2018/03

  • 日本生態学会 日本生態学会賞候補者選考委員

    2015/04 - 2017/03

  • 個体群生態学会 理事

    2015/04 - 2017/03

  • 日本数理生物学会 運営委員

    2015/01 - 2016/12

  • 日本数理生物学会 日本数理生物学会事務局会計

    2015/01 - 2016/12

  • 日本数理生物学会 大久保賞選考委員

    2013/10 - 2016/09

  • 日本数理生物学会 大会実行委員

    2015/04 - 2016/03

  • 日本生態学会 日本生態学会賞選考委員

    2014/04 - 2016/03

  • 日本生態学会 日本生態学会代議員(全国)

    2014/01 - 2015/12

  • 個体群生態学会 個体群生態学会運営委員

    2013/04 - 2015/03

  • 日本数理生物学会 日本数理生物学会学術専門委員

    2013/01 - 2014/12

  • 日本生態学会近畿地区会 日本生態学会近畿地区委員

    2012/01 - 2013/12

  • 日本生態学会 日本生態学会大会実行委員

    2011/04 - 2013/03

  • 日本生態学会 大会企画委員

    2010 - 2011

  • 個体群生態学会 大会実行委員

    2009/04 - 2010/03

  • 日本生態学会近畿地区会 日本生態学会近畿地区委員

    2006/01 - 2007/12

  • 日本生態学会 生態学会誌編集委員

    2005/04 - 2007/03

  • 日本数理生物学会 ニュースレター編集委員

    2004/04 - 2006/03

  • Japanese Society of Mathematical Biology Journal Editor

    2004 -

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Professional Memberships 7

  • 個体群生態学会

  • The eDNA Society

  • Ecological Society of America

  • British Ecological Society

  • THE JAPANESE SOCIETY FOR MATHEMATICAL BIOLOGY

  • SOCIETY OF EVOLUTIONARY STUDIES, JAPAN

  • THE ECOLOGICAL SOCIETY OF JAPAN

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Research Interests 10

  • 環境DNA

  • Complex system

  • Network

  • Community ecology

  • Mathematical modeling

  • population dynamics

  • Food web

  • 個体群動態

  • 食物網

  • Theoretical ecology

Research Areas 1

  • Life sciences / Ecology and environmental science /

Awards 4

  1. The Commendation for Science and Technology by the Minister of Education, Culture, Sports, Science and Technology, The Young Scientists’ Prize

    2013/05 Ministry of Education, Culture, Sports, Science and Technology

  2. Akira Okubo Prize

    2011/07 Japanese Society for Mathematical Biology, Society for Mathematical Biology

  3. Excellent Research Award

    2009/09 Japanese Society for Mathematical Biology

  4. Miyadi Award

    2004/08 Ecological Society of Japan

Papers 80

  1. Rescue or murder? The effect of prey adaptation to the predator subjected to fisheries

    Yangke Shang, Minoru Kasada, Michio Kondoh

    Ecology and Evolution 14 (12) 2024/12/04

    Publisher: Wiley

    DOI: 10.1002/ece3.70336  

    ISSN: 2045-7758

    eISSN: 2045-7758

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    Abstract The concept of “indirect evolutionary rescue” refers to the evolutionary adaptation of an interacting species that can save a focal species from extinction in an unfavorable environment. Although theories suggest that indirect evolutionary rescue may have essential impacts on catchments in the context of fisheries where artificial selection pressure from fishing can drive evolution, its generality and conditions remain uncertain. In this study, by investigating how prey adaptation affects the persistence of a predator subjected to selective harvest with an eco‐evolutionary predator–prey model, we find that prey adaptation tends to deteriorate (facilitate) predator persistence when predator's evolvability is high (low). In the system where the predator possesses high evolvability, selection by fisheries inhibits a predator's adaptation to prey, allowing the prey to escape predation by adaptation. Prey adaptation will affect predator persistence negatively, leading to evolutionary murder. Conversely, in the system where the predator's evolvability is low, the removal of predator individuals by fisheries relaxes predation pressure on prey, making the prey less defensive. Vulnerable prey affects predator persistence positively, resulting in indirect evolutionary rescue. The context‐dependent response of natural resources to fisheries identified in this study suggests that the eco‐evolutionary interplay should be considered for better natural resource management.

  2. Community Science Initiatives Utilizing Environmental DNA

    Michio Kondoh, Minoru Kasada, Takuzo Abe, Akihide Kasai, Akihiro Dazai, Reiji Masuda, Satoquo Seino, Shota Suzuki, Yukari Suzuki-Ohno, Akifumi S. Tanabe

    Ecological Research Monographs 83-99 2024/06/25

    Publisher: Springer Nature Singapore

    DOI: 10.1007/978-981-97-0304-3_6  

    ISSN: 2191-0707

    eISSN: 2191-0715

  3. Assessing the impacts of aquaculture on local fish communities using environmental <scp>DNA</scp> metabarcoding analysis

    Shota Suzuki, Yuri Otomo, Akihiro Dazai, Takuzo Abe, Michio Kondoh

    Environmental DNA 6 (3) 2024/05/20

    Publisher: Wiley

    DOI: 10.1002/edn3.551  

    ISSN: 2637-4943

    eISSN: 2637-4943

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    Abstract Fish aquaculture potentially affects the local ecosystem through feed (leftovers) and feces. However, evaluation of its impacts on biodiversity, especially those of mobile organisms such as fish, is not straightforward. Here, we report a case study in which environmental DNA (eDNA) metabarcoding with MiFish universal primers for the 12S rRNA region of fish is used to detect and assess the impact of aquaculture on local fish communities. In Shizugawa Bay, Minamisanriku Town, Miyagi Prefecture, Japan, Oncorhynchus kisutch (coho salmon) is aquacultured in sea cages from November to July, but is absent from August to October. We conducted eDNA surveys in June, August, October, and December 2021 of water at depths of 5 m and 1 m above the bottom obtained from two sites, one approximately 100 m and the other approximately 2500 m from the nearest aquaculture site. The total number of operational taxonomic units (OTUs) detected was 122, with a maximum of 50 and a minimum of 10. With distance‐based redundancy analysis (dbRDA) and PERMANOVA applied to the eDNA‐based community compositional data, we detected a significant effect of the presence of O. kisutch aquaculture on fish biodiversity. The generalized linear model (GLM) applied to each detected OTUs indicated that the aquaculture was associated positively with Leucopsarion petersii (ice goby), and Oncorhynchus spp. and negatively with Chaenogobius annularis (forktongue goby). Environmental DNA metabarcoding surveys, combined with multivariate statics, are a promising tool to identify the dimension of biodiversity that human activity affects and would serve as a basic survey for sustainable use of the sea.

  4. Time series analysis showing how different environmental conditions affect the interspecific interactions of Callosobruchus maculatus and Callosobruchus chinensis

    Takanori Kawase, Daisuke Kyogoku, Kazutaka Kawatsu, Noboru Katayama, Takeshi Miki, Michio Kondoh

    POPULATION ECOLOGY 66 6-21 2024/01

    DOI: 10.1002/1438-390X.12160  

    ISSN: 1438-3896

    eISSN: 1438-390X

  5. Biodiversity and Constrained Information Dynamics in Ecosystems: A Framework for Living Systems

    Kazufumi Hosoda, Shigeto Seno, Rikuto Kamiura, Naomi Murakami, Michio Kondoh

    Entropy 25 (12) 1624-1624 2023/12/05

    Publisher: MDPI AG

    DOI: 10.3390/e25121624  

    eISSN: 1099-4300

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    The increase in ecosystem biodiversity can be perceived as one of the universal processes converting energy into information across a wide range of living systems. This study delves into the dynamics of living systems, highlighting the distinction between ex post adaptation, typically associated with natural selection, and its proactive counterpart, ex ante adaptability. Through coalescence experiments using synthetic ecosystems, we (i) quantified ecosystem stability, (ii) identified correlations between some biodiversity indexes and the stability, (iii) proposed a mechanism for increasing biodiversity through moderate inter-ecosystem interactions, and (iv) inferred that the information carrier of ecosystems is species composition, or merged genomic information. Additionally, it was suggested that (v) changes in ecosystems are constrained to a low-dimensional state space, with three distinct alteration trajectories—fluctuations, rapid environmental responses, and long-term changes—converging into this state space in common. These findings suggest that daily fluctuations may predict broader ecosystem changes. Our experimental insights, coupled with an exploration of living systems’ information dynamics from an ecosystem perspective, enhance our predictive capabilities for natural ecosystem behavior, providing a universal framework for understanding a broad spectrum of living systems.

  6. Integrated trophic position as a proxy for food‐web complexity

    Naoto F. Ishikawa, Ayaka Takashima, Hirokazu Maruoka, Michio Kondoh

    Methods in Ecology and Evolution 15 (1) 164-177 2023/12/05

    Publisher: Wiley

    DOI: 10.1111/2041-210x.14256  

    ISSN: 2041-210X

    eISSN: 2041-210X

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    Abstract There are two distinct approaches to describing the distributions of biomass and species in food webs: one to consider them as discrete trophic levels (TLs); and the other to consider them as continuous trophic positions (TPs). Bridging the gap between these two perspectives presents a nontrivial challenge in integrating biodiversity and food‐web structure. Food network unfolding (FNU) is a technique used to bridge this gap by partitioning the biomass of species into integer TLs to compute three complexity indices, namely vertical (DV), horizontal (DH) and range (DR) diversity (D indices), through decomposition of Shannon's index H′. Using FNU, the food web (a network of species with unique TPs) is converted to a linear food chain (a biomass distribution at discrete TLs). This enables us to expect that the unfolded biomass within species decreases exponentially as the TL increases. Under this condition, the mean TL value in unfolded food chains is hypothesized to have an exponential relationship with the vertical diversity, DV. To explore this, we implemented FNU and calculated D indices for food webs publicly available at EcoBase (n = 158) and calculated the integrated TP (iTP), defined as the biomass‐weighted average TP of a given food web. The iTP corresponds to the mean TL in unfolded food chains and can be empirically measured through compound‐specific isotope analysis of amino acids (CSIA‐AA). Although our analysis is biased towards marine ecosystems, we revealed an exponential relationship between iTP and DV, suggesting that iTP can serve as a measurable proxy for DV. Furthermore, we found a positive correlation between the iTP observed in the total communities (total iTP) and the iTPs of partial communities consisting only of species with 2.0 ≤ TP &lt; 3.0 (partial iTP; r2 = 0.48), suggesting that DV can be predicted using partial iTP. Our findings suggest that the net effect of species diversity, excluding the effect of biomass (corresponding to H′ − DV), on food‐web complexity can be revealed by combining CSIA‐AA with biodiversity analysis (e.g. environmental DNA).

  7. Synthetic model ecosystem of 12 cryopreservable microbial species allowing for a noninvasive approach. International-journal

    Kazufumi Hosoda, Shigeto Seno, Naomi Murakami, Hideo Matsuda, Yutaka Osada, Rikuto Kamiura, Michio Kondoh

    Bio Systems 235 105087-105087 2023/11/19

    DOI: 10.1016/j.biosystems.2023.105087  

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    Simultaneous understanding of both population and ecosystem dynamics is crucial in an era marked by the degradation of ecosystem services. Experimental ecosystems are a powerful tool for understanding these dynamics; however, they often face technical challenges, typically falling into two categories: "complex but with limited replicability microcosms" and "highly replicable but overly simplistic microcosms." Herein, we present a high-throughput synthetic microcosm system comprising 12 functionally and phylogenetically diverse microbial species. These species are axenically culturable, cryopreservable, and can be measured noninvasively via microscopy, aided by machine learning. This system includes prokaryotic and eukaryotic producers and decomposers, and eukaryotic consumers to ensure functional redundancy. Our model system exhibited key features of a complex ecosystem: (i) various positive and negative interspecific interactions, (ii) higher-order interactions beyond two-species dynamics, (iii) probabilistic dynamics leading to divergent outcomes, and (iv) stable nonlinear transitions. We identified several conditions under which at least one species from each of the three functional groups-producers, consumers, and decomposers-and one functionally redundant species, persisted for over six months. These conditions set the stage for detailed investigations in the future. Given its designability and experimental replicability, our model ecosystem offers a promising platform for deeper insights integrating both population and ecosystem dynamics.

  8. Microbial community ecosystem network model for chemical energy transport Peer-reviewed

    Mayumi Seto, Michio Kondoh

    ARPHA Conference Abstracts 2023/10/17

    DOI: 10.3897/aca.6.e108960  

  9. Microbial redox cycling enhances ecosystem thermodynamic efficiency and productivity. International-journal

    Mayumi Seto, Michio Kondoh

    Ecology letters 26 (10) 1714-1725 2023/10

    DOI: 10.1111/ele.14287  

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    Microbial life in low-energy ecosystems relies on individual energy conservation, optimizing energy use in response to interspecific competition and mutualistic interspecific syntrophy. Our study proposes a novel community-level strategy for increasing energy use efficiency. By utilizing an oxidation-reduction (redox) reaction network model that represents microbial redox metabolic interactions, we investigated multiple species-level competition and cooperation within the network. Our results suggest that microbial functional diversity allows for metabolic handoffs, which in turn leads to increased energy use efficiency. Furthermore, the mutualistic division of labour and the resulting complexity of redox pathways actively drive material cycling, further promoting energy exploitation. Our findings reveal the potential of self-organized ecological interactions to develop efficient energy utilization strategies, with important implications for microbial ecosystem functioning and the co-evolution of life and Earth.

  10. Perspective: sustainability challenges, opportunities and solutions for long-term ecosystem observations. International-journal

    Akira S Mori, Kureha F Suzuki, Masakazu Hori, Taku Kadoya, Kotaro Okano, Aya Uraguchi, Hiroyuki Muraoka, Tamotsu Sato, Hideaki Shibata, Yukari Suzuki-Ohno, Keisuke Koba, Mariko Toda, Shin-Ichi Nakano, Michio Kondoh, Kaoru Kitajima, Masahiro Nakamura

    Philosophical transactions of the Royal Society of London. Series B, Biological sciences 378 (1881) 20220192-20220192 2023/07/17

    DOI: 10.1098/rstb.2022.0192  

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    As interest in natural capital grows and society increasingly recognizes the value of biodiversity, we must discuss how ecosystem observations to detect changes in biodiversity can be sustained through collaboration across regions and sectors. However, there are many barriers to establishing and sustaining large-scale, fine-resolution ecosystem observations. First, comprehensive monitoring data on both biodiversity and possible anthropogenic factors are lacking. Second, some in situ ecosystem observations cannot be systematically established and maintained across locations. Third, equitable solutions across sectors and countries are needed to build a global network. Here, by examining individual cases and emerging frameworks, mainly from (but not limited to) Japan, we illustrate how ecological science relies on long-term data and how neglecting basic monitoring of our home planet further reduces our chances of overcoming the environmental crisis. We also discuss emerging techniques and opportunities, such as environmental DNA and citizen science as well as using the existing and forgotten sites of monitoring, that can help overcome some of the difficulties in establishing and sustaining ecosystem observations at a large scale with fine resolution. Overall, this paper presents a call to action for joint monitoring of biodiversity and anthropogenic factors, the systematic establishment and maintenance of in situ observations, and equitable solutions across sectors and countries to build a global network, beyond cultures, languages, and economic status. We hope that our proposed framework and the examples from Japan can serve as a starting point for further discussions and collaborations among stakeholders across multiple sectors of society. It is time to take the next step in detecting changes in socio-ecological systems, and if monitoring and observation can be made more equitable and feasible, they will play an even more important role in ensuring global sustainability for future generations. This article is part of the theme issue 'Detecting and attributing the causes of biodiversity change: needs, gaps and solutions'.

  11. Dynamics-based characterization and classification of biodiversity indicators. International-journal

    Yuri Otomo, Reiji Masuda, Yutaka Osada, Kazutaka Kawatsu, Michio Kondoh

    Ecology and evolution 13 (7) e10271 2023/07

    DOI: 10.1002/ece3.10271  

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    Various biodiversity indicators, such as species richness, total abundance, and species diversity indices, have been developed to capture the state of ecological communities over space and time. As biodiversity is a multifaceted concept, it is important to understand the dimension of biodiversity reflected by each indicator for successful conservation and management. Here we utilized the responsiveness of biodiversity indicators' dynamics to environmental changes (i.e., environmental responsiveness) as a signature of the dimension of biodiversity. We present a method for characterizing and classifying biodiversity indicators according to environmental responsiveness and apply the methodology to monitoring data for a marine fish community under intermittent anthropogenic warm water discharge. Our analysis showed that 10 biodiversity indicators can be classified into three super-groups based on the dimension of biodiversity that is reflected. Group I (species richness and community mean of latitudinal center of distribution (cCOD)) showed the greatest robustness to temperature changes; Group II (species diversity and total abundance) showed an abrupt change in the middle of the monitoring period, presumably due to a change in temperature; Group III (species evenness) exhibited the highest sensitivity to environmental changes, including temperature. These results had several ecological implications. First, the responsiveness of species diversity and species evenness to temperature changes might be related to changes in the species abundance distribution. Second, the similar environmental responsiveness of species richness and cCOD implies that fish migration from lower latitudes is a major driver of species compositional changes. The study methodology may be useful in selecting appropriate indicators for efficient biodiversity monitoring.

  12. Evaluation of community science monitoring with environmental <scp>DNA</scp> for marine fish species: “Fish survey project using environmental <scp>DNA</scp>”

    Yukari Suzuki‐Ohno, Akifumi S. Tanabe, Akihide Kasai, Reiji Masuda, Satoquo Seino, Akihiro Dazai, Shota Suzuki, Takuzo Abe, Michio Kondoh

    Environmental DNA 5 (3) 613-623 2023/04/18

    Publisher: Wiley

    DOI: 10.1002/edn3.425  

    ISSN: 2637-4943

    eISSN: 2637-4943

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    Abstract Environmental DNA is a powerful tool for community science‐based biodiversity surveys. However, the effectiveness of environmental DNA for environmental education and the time and physical costs perceived by volunteers for collecting environmental DNA remain unclear. Here, we evaluated a community science program for monitoring marine fish biodiversity using environmental DNA metabarcoding. This program aimed to investigate marine fish biodiversity in coastal areas along the Japanese archipelago. The participants were allowed to decide on the date and site to collect environmental DNA. They received a paper manual, a data sheet, and a sampling kit via a parcel delivery service. Before collecting environmental DNA, they watched a video manual for collecting environmental DNA and attended a webinar about the process and precautions for collecting environmental DNA provided by the scientists. At the sampling sites, they obtained environmental DNA samples from seawater themselves and sent the samples to the scientists via a refrigerated parcel delivery service. After collecting environmental DNA, they received fish name data from their samples and attended a webinar about survey results provided by the scientists. A cumulative total of 168 volunteers (84 pairs) participated in the program and detected 572 taxonomic groups of fish environmental DNA in the summer of 2020 and 2021. According to a questionnaire survey, more than 75% of the respondents answered that the project improved their understanding of biodiversity, marine environments, and environmental DNA. Approximately 95% of the respondents thought that environmental DNA collection work was meaningful to them. Some respondents commented on the difficulty of interpreting their fish name data, or the time and effort of selecting a sampling site. Therefore, improving the methods to communicate more information about fish name data and select sampling sites will further develop community science monitoring using environmental DNA.

  13. Predator discrimination of prey promotes the predator-mediated coexistence of prey species. International-journal

    Gen Iwashita, Akira Yamawo, Michio Kondoh

    Royal Society open science 9 (12) 220859-220859 2022/12

    DOI: 10.1098/rsos.220859  

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    The predator discrimination of prey can affect predation intensity and the prey density dependence of predators, which has the potential to alter the coexistence of prey species. We used a predator-prey population dynamics model accounting for the predator's adaptive diet choice and predator discrimination of prey to investigate how the latter influences prey coexistence. The model revealed that (i) prey species that are perceived as belonging to the same species by a predator are attacked in the same manner, and it is more difficult for them to coexist than those that are recognized as different prey species, and (ii) prey species that are not discriminated by a predator-and therefore cannot coexist-may coexist in the presence of an alternative predator that does discriminate between them. These results suggest that prey diversity, which favours the predator discrimination of prey, and the different capabilities of predators to identify prey species both enhance prey coexistence.

  14. Reconstruction of a Soil Microbial Network Induced by Stress Temperature

    Dailin Yang, Hiromi Kato, Kazutaka Kawatsu, Yutaka Osada, Toyohiro Azuma, Yuji Nagata, Michio Kondoh

    Microbiology Spectrum 10 (5) 2022/10/26

    Publisher: American Society for Microbiology

    DOI: 10.1128/spectrum.02748-22  

    eISSN: 2165-0497

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    By combining amplicon-based diversity survey with recently developed nonlinear analytical tools, we successfully determined the interaction networks of more than 150 natural soil microbial genera under less or more temperature stress and explored the applicability of the stress gradient hypothesis to soil microbiota, shedding new light on the well-known hypothesis.

  15. Dispersion and degradation of environmental DNA from caged fish in a marine environment

    弘章 村上, 錫鎭 尹, 亮秀 笠井, 利文 源, 哲史 山本, 雅之 坂田, 智矢 堀内, 英樹 澤田, 倫生 近藤, 洋 山下, 玲爾 益田

    NIPPON SUISAN GAKKAISHI 88 (4) 206-206 2022/07/15

    Publisher: Japanese Society of Fisheries Science

    DOI: 10.2331/suisan.133  

    ISSN: 0021-5392

    eISSN: 1349-998X

  16. Author Correction: Fluctuating interaction network and time-varying stability of a natural fish community International-journal

    Masayuki Ushio, Chih-hao Hsieh, Reiji Masuda, Ethan R. Deyle, Hao Ye, Chun-Wei Chang, George Sugihara, Michio Kondoh

    Nature 605 (7911) E9 2022/05/06

    Publisher: Springer Science and Business Media LLC

    DOI: 10.1038/s41586-022-04810-1  

    ISSN: 0028-0836

    eISSN: 1476-4687

  17. Microbial redox interplay enhances biodiversity and ecosystem productivity

    Mayumi Seto, Michio Kondoh

    2021/10/19

    Publisher: Research Square Platform LLC

    DOI: 10.21203/rs.3.rs-959776/v1  

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    Abstract A significant portion of the Earth’s biodiversity and biomass is from the subsurface biosphere, where chemotrophic microbial species harness diverse inorganic oxidation-reduction reactions (redox reactions) as a major source of metabolic energy while driving biogeochemical cycles. Given the limited availability of energy in the anaerobic environment, a fundamental question concerns what interplay between the chemical environment and chemotrophic community enables the persistence of whole biogeochemical systems. Here, using a thermodynamics-based mechanistic model that maps the interplay between diverse chemotrophic species and chemical compounds onto a redox network, we show that cycles of redox reactions mediate chemotrophic interactions in a way that increases the complexity of both redox reaction networks and microbial communities and enhances the community-level efficiency of energy metabolism. The high efficiency and complexity of biogeochemical systems arises from the self-organised ecological niche segmentation of microbes. More specifically, a consortium of chemotrophic species that subdivide a long-reaction pathway into shorter-reaction segments enhance each other’s population growth, replaces the species that monopolises the long-reaction pathway, and increases ecosystem productivity. An ecologically driven ‘division of metabolic labour’ in the chemotrophic community provides a novel mechanism through which an intimate life-environment interplay concurrently enhances biodiversity and ecosystem productivity.

  18. Illuminating the intrinsic and extrinsic drivers of ecological stability across scales Peer-reviewed

    Samuel R. P.‐J. Ross, Yuka Suzuki, Michio Kondoh, Kenta Suzuki, Paula Villa Martín, Maria Dornelas

    Ecological Research 36 (3) 364-378 2021/05

    Publisher: Wiley

    DOI: 10.1111/1440-1703.12214  

    ISSN: 0912-3814

    eISSN: 1440-1703

  19. Are networks of trophic interactions sufficient for understanding the dynamics of multi‐trophic communities? Analysis of a tri‐trophic insect food‐web time‐series Peer-reviewed

    Kazutaka Kawatsu, Masayuki Ushio, F. J. Frank Veen, Michio Kondoh

    Ecology Letters 24 (3) 543-552 2021/03

    DOI: 10.1111/ele.13672  

    ISSN: 1461-023X

    eISSN: 1461-0248

  20. An illustrated manual for environmental DNA research: Water sampling guidelines and experimental protocols Peer-reviewed

    Toshifumi Minamoto, Masaki Miya, Tetsuya Sado, Satoquo Seino, Hideyuki Doi, Michio Kondoh, Keigo Nakamura, Teruhiko Takahara, Satoshi Yamamoto, Hiroki Yamanaka, Hitoshi Araki, Wataru Iwasaki, Akihide Kasai, Reiji Masuda, Kimiko Uchii

    Environmental DNA 3 (1) 8-13 2021/01

    Publisher: Wiley

    DOI: 10.1002/edn3.121  

    ISSN: 2637-4943

    eISSN: 2637-4943

  21. Evolutionary stability of plant–pollinator networks: efficient communities and a pollination dilemma Peer-reviewed

    Soeren Metelmann, Shoko Sakai, Michio Kondoh, Arndt Telschow

    Ecology Letters 23 (12) 1747-1755 2020/12

    Publisher: Wiley

    DOI: 10.1111/ele.13588  

    ISSN: 1461-023X

    eISSN: 1461-0248

  22. A model ecosystem of twelve cryopreservable microbial species allowing for a non-invasive approach

    Kazufumi Hosoda, Shigeto Seno, Naomi Murakami, Hideo Matsuda, Yutaka Osada, Michio Kondoh

    2020/10/23

    Publisher: Cold Spring Harbor Laboratory

    DOI: 10.1101/2020.10.23.351742  

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    Abstract We developed a synthetic ecosystem of 12 cryopreservable microbial species with diverse interactions as an experimental “model ecosystem.” We created a machine learning model that noninvasively distinguished the 12 species on micrographs enabling high-throughput measurements. Our synthetic ecosystems maintained a certain diversity for at least six months.

  23. Estimating fish population abundance by integrating quantitative data on environmental DNA and hydrodynamic modelling Peer-reviewed

    Keiichi Fukaya, Hiroaki Murakami, Seokjin Yoon, Kenji Minami, Yutaka Osada, Satoshi Yamamoto, Reiji Masuda, Akihide Kasai, Kazushi Miyashita, Toshifumi Minamoto, Michio Kondoh

    Molecular Ecology 30 (13) 482489-3067 2020/07/20

    Publisher: Wiley

    DOI: 10.1111/mec.15530  

    ISSN: 0962-1083

    eISSN: 1365-294X

  24. Intraspecific Adaptation Load: A Mechanism for Species Coexistence. International-journal Peer-reviewed

    Masato Yamamichi, Daisuke Kyogoku, Ryosuke Iritani, Kazuya Kobayashi, Yuma Takahashi, Kaori Tsurui-Sato, Akira Yamawo, Shigeto Dobata, Kazuki Tsuji, Michio Kondoh

    Trends in ecology & evolution 35 (10) 897-907 2020/07/13

    DOI: 10.1016/j.tree.2020.05.011  

    More details Close

    Evolutionary ecological theory suggests that selection arising from interactions with conspecifics, such as sexual and kin selection, may result in evolution of intraspecific conflicts and evolutionary 'tragedy of the commons'. Here, we propose that such an evolution of conspecific conflicts may affect population dynamics in a way that enhances species coexistence. Empirical evidence and theoretical models suggest that more abundant species is more susceptible to invasion of 'selfish' individuals that increase their own reproductive success at the expense of population growth (intraspecific adaptation load). The density-dependent intraspecific adaptation load gives rise to a self-regulation mechanism at the population level, and stabilizes species coexistence at the community level by negative frequency-dependence.

  25. A data-driven approach to complex ecological systems

    Michio Kondoh, Kazutaka Kawatsu, Yutaka Osada, Masayuki Ushio

    Theoretical Ecology 116-133 2020/05/14

    Publisher: Oxford University Press

    DOI: 10.1093/oso/9780198824282.003.0008  

    More details Close

    <p>Interspecific interaction has been a key concept in ecology to understand the structure and dynamics of ecological communities. Important, yet often overlooked, is that an interspecific interaction is a product of multiple biological processes at various temporal and spatial scales, including changes in demographic parameters such as birth and death rates, behavioral responses such as inter-habitat movements, and hiding and evolutionary responses in a longer temporal scale. Each of those mechanisms, according to ecological theory, potentially affects population dynamics and modifies the community-level properties such as community complexity and stability in different manners. Here, a question arises: how does the net interspecific interaction, which is made up with those multiple processes, look like in the real nature? How do changes depend on the temporal or spatial scale? In this chapter we show that a data-driven approach using demographic time series is a powerful tool to answer those questions. According to nonlinear dynamics theory, a time series of a variable contains information about the dynamic system that the variable belongs to. We can use this fact to identify interspecific interactions, quantify their signs and strengths and evaluate its effect to community-level dynamic properties. Some results we got by applying the time-series analysis based on nonlinear dynamics theory (called Empirical Dynamic Modeling) to empirical demographic data, experimental or observational, will be presented, which will demonstrate how fluctuating and condition-dependent the real interactions are and reveal how those interactions give rise to the dynamic properties at higher organization levels.</p>

  26. Who determines the timing of inflorescence closure of a sexual dandelion? Pollen donors versus recipients Peer-reviewed

    Daisuke Kyogoku, Yutaro Kataoka, Michio Kondoh

    Evolutionary Ecology 33 (5) 701-712 2019/10

    Publisher: Springer Science and Business Media LLC

    DOI: 10.1007/s10682-019-10000-9  

    ISSN: 0269-7653

    eISSN: 1573-8477

  27. Does past evolutionary history under different mating regimes influence the demographic dynamics of interspecific competition? International-journal Peer-reviewed

    Daisuke Kyogoku, Michio Kondoh, Teiji Sota

    Ecology and evolution 9 (15) 8616-8624 2019/08

    DOI: 10.1002/ece3.5397  

    More details Close

    Interspecific interactions are contingent upon organism phenotypes, and thus phenotypic evolution can modify interspecific interactions and affect ecological dynamics. Recent studies have suggested that male-male competition within a species selects for capability to reproductively interfere with a closely related species. Here, we examine the effect of past evolutionary history under different mating regimes on the demographic dynamics of interspecific competition in Callosobruchus seed beetles. We used previously established experimental evolution lines of Callosobruchus chinensis that evolved under either forced lifelong monogamy or polygamy for 17 generations, and examined the demographic dynamics of competition between these C. chinensis lines and a congener, Callosobruchus maculatus. Callosobruchus chinensis was competitively excluded by C. maculatus in all trials. Time series data analyses suggested that reproductive interference from C. chinensis was relatively more important in the trials involving polygamous C. chinensis than those involving monogamous C. chinensis, in accordance with the potentially higher reproductive interference capability of polygamous C. chinensis. However, the estimated signs and magnitudes of interspecific interactions were not fully consistent with this explanation, implying the evolution of not only reproductive interference but also other interaction mechanisms. Our study thus suggests multifaceted effects of sexually selected traits on interspecific competitive dynamics.

  28. Evaluation of detection probabilities at the water-filtering and initial PCR steps in environmental DNA metabarcoding using a multispecies site occupancy model International-journal Peer-reviewed

    Doi Hideyuki, Fukaya Keiichi, Oka Shin-ichiro, Sato Keiichi, Kondoh Michio, Miya Masaki

    SCIENTIFIC REPORTS 9 (1) 3581-3581 2019/03/05

    DOI: 10.1038/s41598-019-40233-1  

    ISSN: 2045-2322

  29. Dispersion and degradation of environmental DNA from caged fish in a marine environment Peer-reviewed

    Hiroaki Murakami, Seokjin Yoon, Akihide Kasai, Toshifumi Minamoto, Satoshi Yamamoto, Masayuki K. Sakata, Tomoya Horiuchi, Hideki Sawada, Michio Kondoh, Yoh Yamashita, Reiji Masuda

    Fisheries Science 85 (2) 327-337 2019/03

    DOI: 10.1007/s12562-018-1282-6  

    ISSN: 0919-9268

    eISSN: 1444-2906

  30. The Release Rate of Environmental DNA from Juvenile and Adult Fish (vol 9, e114639, 2014) Peer-reviewed

    Maruyama Atsushi, Nakamura Keisuke, Yamanaka Hiroki, Kondoh Michio, Minamoto Toshifumi

    PLOS ONE 14 (2) 2019/02/05

    DOI: 10.1371/journal.pone.0212145  

    ISSN: 1932-6203

  31. Using food network unfolding to evaluate food–web complexity in terms of biodiversity: theory and applications Peer-reviewed

    Yoshikazu Kato, Michio Kondoh, Naoto F. Ishikawa, Hiroyuki Togashi, Yukihiro Kohmatsu, Mayumi Yoshimura, Chikage Yoshimizu, Takashi F. Haraguchi, Yutaka Osada, Nobuhito Ohte, Naoko Tokuchi, Noboru Okuda, Takeshi Miki, Ichiro Tayasu

    Ecology Letters 21 (7) 1065-1074 2018/07/01

    DOI: 10.1111/ele.12973  

    ISSN: 1461-0248 1461-023X

    eISSN: 1461-0248

  32. Density-dependent interspecific interactions and the complexity–stability relationship Peer-reviewed

    Kazutaka Kawatsu, Michio Kondoh

    Proceedings of the Royal Society B: Biological Sciences 285 (1879) 20180698 2018/05/16

    DOI: 10.1098/rspb.2018.0698  

    ISSN: 1471-2954 0962-8452

  33. Quantitative monitoring of multispecies fish environmental DNA using high-throughput sequencing Peer-reviewed

    Masayuki Ushio, Hiroaki Murakami, Reiji Masuda, Tetsuya Sado, Masaki Miya, Sho Sakurai, Hiroki Yamanaka, Toshifumi Minamoto, Michio Kondoh

    Metabarcoding and Metagenomics 2 e23297 2018/03

  34. Fluctuating interaction network and time-varying stability of a natural fish community Peer-reviewed

    Masayuki Ushio, Chih-Hao Hsieh, Reiji Masuda, Ethan R Deyle, Hao Ye, Chun-Wei Chang, George Sugihara, Michio Kondoh

    Nature 554 (7692) 360-363 2018/02/15

    DOI: 10.1038/nature25504  

    ISSN: 1476-4687 0028-0836

  35. Environmental DNA enables detection of terrestrial mammals from forest pond water Peer-reviewed

    Masayuki Ushio, Hisato Fukuda, Toshiki Inoue, Kobayashi Makoto, Osamu Kishida, Keiichi Sato, Koichi Murata, Masato Nikaido, Tetsuya Sado, Yukuto Sato, Masamichi Takeshita, Wataru Iwasaki, Hiroki Yamanaka, Michio Kondoh, Masaki Miya

    MOLECULAR ECOLOGY RESOURCES 17 (6) e63-e75 2017/11

    DOI: 10.1111/1755-0998.12690  

    ISSN: 1755-098X

    eISSN: 1755-0998

  36. Establishment of an ecological research network involving Taiwan and Japan: developing a better understanding of ecological phenomena unique to East Asia Peer-reviewed

    Masahiro Nakamura, Chih-hao Hsieh, Takeshi Miki, Michio Kondoh

    ECOLOGICAL RESEARCH 32 (6) 779-781 2017/11

    DOI: 10.1007/s11284-017-1520-x  

    ISSN: 0912-3814

    eISSN: 1440-1703

  37. Filling the gaps in ecological studies of socioecological systems Peer-reviewed

    I-Ching Chen, Chih-hao Hsieh, Michio Kondoh, Hsing-Juh Lin, Takeshi Miki, Masahiro Nakamura, Takayuki Ohgushi, Jotaro Urabe, Takehito Yoshida

    ECOLOGICAL RESEARCH 32 (6) 873-885 2017/11

    DOI: 10.1007/s11284-017-1521-9  

    ISSN: 0912-3814

    eISSN: 1440-1703

  38. Integrated trophic position decreases in more diverse communities of stream food webs Peer-reviewed

    Naoto F. Ishikawa, Yoshito Chikaraishi, Naohiko Ohkouchi, Aya R. Murakami, Ichiro Tayasu, Hiroyuki Togashi, Jun-ichi Okano, Yoichiro Sakai, Tomoya Iwata, Michio Kondoh, Noboru Okuda

    SCIENTIFIC REPORTS 7 (1) 2130 2017/05

    DOI: 10.1038/s41598-017-02155-8  

    ISSN: 2045-2322

  39. Numerical simulation on distribution of environmental DNA of Japanese jack mackerel (Trachurusjaponicus) in a semi-closed bay Peer-reviewed

    Seokjin Yoon, Akihide Kasai, Satoshi Yamamoto, Kenji Minami, Kazushi Miyashita, Reiji Matsuda, Michio Kondoh

    한국수산과학회 양식분과 학술대회 126-126 2017/05

  40. What kind of interaction-type diversity matters for community stability? Peer-reviewed

    Michio Kondoh, Akihiko Mougi

    Adaptive Food Webs: Stability and Transitions of Real and Model Ecosystems 19-30 2017/01/01

    Publisher: Cambridge University Press

    DOI: 10.1017/9781316871867.004  

  41. Environmental DNA metabarcoding reveals local fish communities in a species-rich coastal sea Peer-reviewed

    Satoshi Yamamoto, Reiji Masuda, Yukuto Sato, Tetsuya Sado, Hitoshi Araki, Michio Kondoh, Toshifumi Minamoto, Masaki Miya

    SCIENTIFIC REPORTS 7 40368 2017/01

    DOI: 10.1038/srep40368  

    ISSN: 2045-2322

  42. Food-web complexity, metacommunity complexity and community stability

    Mougi Akihiko

    Scientific Reports 6 (6) 24478-1-24478-5 2016/04/13

    DOI: 10.1038/srep24478  

    ISSN: 2045-2322

  43. Environmental DNA as a 'Snapshot' of Fish Distribution: A Case Study of Japanese Jack Mackerel in Maizuru Bay, Sea of Japan Peer-reviewed

    Satoshi Yamamoto, Kenji Minami, Keiichi Fukaya, Kohji Takahashi, Hideki Sawada, Hiroaki Murakami, Satsuki Tsuji, Hiroki Hashizume, Shou Kubonaga, Tomoya Horiuchi, Masamichi Hongo, Jo Nishida, Yuta Okugawa, Ayaka Fujiwara, Miho Fukuda, Shunsuke Hidaka, Keita W. Suzuki, Masaki Miya, Hitoshi Araki, Hiroki Yamanaka, Atsushi Maruyama, Kazushi Miyashita, Reiji Masuda, Toshifumi Minamoto, Michio Kondoh

    PLOS ONE 11 (3) e0149786 2016/03

    DOI: 10.1371/journal.pone.0149786  

    ISSN: 1932-6203

  44. Correction: Environmental DNA as a 'Snapshot' of Fish Distribution: A Case Study of Japanese Jack Mackerel in Maizuru Bay, Sea of Japan. International-journal

    Satoshi Yamamoto, Kenji Minami, Keiichi Fukaya, Kohji Takahashi, Hideki Sawada, Hiroaki Murakami, Satsuki Tsuji, Hiroki Hashizume, Shou Kubonaga, Tomoya Horiuchi, Masamichi Hongo, Jo Nishida, Yuta Okugawa, Ayaka Fujiwara, Miho Fukuda, Shunsuke Hidaka, Keita W Suzuki, Masaki Miya, Hitoshi Araki, Hiroki Yamanaka, Atsushi Maruyama, Kazushi Miyashita, Reiji Masuda, Toshifumi Minamoto, Michio Kondoh

    PloS one 11 (4) e0153291 2016

    DOI: 10.1371/journal.pone.0153291  

  45. MiFish, a set of universal PCR primers for metabarcoding environmental DNA from fishes: detection of more than 230 subtropical marine species Peer-reviewed

    M. Miya, Y. Sato, T. Fukunaga, T. Sado, J. Y. Poulsen, K. Sato, T. Minamoto, S. Yamamoto, H. Yamanaka, H. Araki, M. Kondoh, W. Iwasaki

    ROYAL SOCIETY OPEN SCIENCE 2 (7) 2015/07

    DOI: 10.1098/rsos.150088  

    ISSN: 0831-2796

  46. MiFish, a set of universal PCR primers for metabarcoding environmental DNA from fishes: detection of more than 230 subtropical marine species Peer-reviewed

    M. Miya, Y. Sato, T. Fukunaga, T. Sado, J. Y. Poulsen, K. Sato, T. Minamoto, S. Yamamoto, H. Yamanaka, H. Araki, M. Kondoh, W. Iwasaki

    ROYAL SOCIETY OPEN SCIENCE 2 (7) 150088 2015/07

    DOI: 10.1098/rsos.150088  

    ISSN: 2054-5703

  47. MiFish, a set of universal primers for metabarcoding environmental DNA from fishes: detection of &gt; 230 species from aquarium tanks and coral reefs in the subtropical western North Pacific Peer-reviewed

    Masaki Miya, Yukuto Sato, Tsukasa Fukunaga, Tetsuya Sado, Keiichi Sato, Toshifumi Minamoto, Satoshi Yamamoto, Hiroaki Yamanaka, Hitoshi Araki, Michio Kondoh, Wataru Iwasaki

    GENOME 58 (5) 257-257 2015/05

    DOI: 10.1098/rsos.150088  

    ISSN: 0831-2796

    eISSN: 1480-3321

  48. Adaptive movement and food-chain dynamics: towards food-web theory without birth–death processes Peer-reviewed

    Michio Kondoh, Akihiko Mougi, Atushi Ushimaru, Kensuke Nakata

    Theor Ecol 9 (1) 15-25 2015/04

    DOI: 10.1007/s12080-015-0266-8  

    ISSN: 1874-1738

  49. Interaction-type diversity hypothesis and interaction strength: the condition for the positive complexity-stability effect to arise Peer-reviewed

    Michio Kondoh, Akihiko Mougi

    POPULATION ECOLOGY 57 (1) 21-27 2015/01

    DOI: 10.1007/s10144-014-0475-9  

    ISSN: 1438-3896

    eISSN: 1438-390X

  50. The Release Rate of Environmental DNA from Juvenile and Adult Fish Peer-reviewed

    Atsushi Maruyama, Keisuke Nakamura, Hiroki Yamanaka, Michio Kondoh, Toshifumi Minamoto

    PLOS ONE 9 (12) e114639 2014/12

    DOI: 10.1371/journal.pone.0114639  

    ISSN: 1932-6203

  51. Stability of competition-antagonism-mutualism hybrid community and the role of community network structure Peer-reviewed

    Akihiko Mougi, Michio Kondoh

    JOURNAL OF THEORETICAL BIOLOGY 360 54-58 2014/11

    DOI: 10.1016/j.jtbi.2014.06.030  

    ISSN: 0022-5193

    eISSN: 1095-8541

  52. Instability of a hybrid module of antagonistic and mutualistic interactions Peer-reviewed

    Akihiko Mougi, Michio Kondoh

    POPULATION ECOLOGY 56 (2) 257-263 2014/04

    DOI: 10.1007/s10144-014-0430-9  

    ISSN: 1438-3896

    eISSN: 1438-390X

  53. Adaptation in a hybrid world with multiple interaction types: a new mechanism for species coexistence Peer-reviewed

    Akihiko Mougi, Michio Kondoh

    ECOLOGICAL RESEARCH 29 (2) 113-119 2014/03

    DOI: 10.1007/s11284-013-1111-4  

    ISSN: 0912-3814

    eISSN: 1440-1703

  54. Sustaining ecosystem functions in a changing world: a call for an integrated approach. Peer-reviewed

    Tomimatsu, H, T. Sasaki, H. Kurokawa, J. R. Bridle, C. Fontaine, J. Kitano, D.B. Stouffer, M. Vellend, T. M. Bezemer, G. Crutsinger, T. Fukami, E A. Hadly, M. G.A. van, der Heijden, M. Kawata, S. Kéfi, M. Kondoh, N. J.B. Kraft, K. S. McCann, J. Montoya, P. Mumby, T. Nakashizuka, O. L. Petchey, T. Romanuk, K. N. Suding, G. Takimoto, J. Urabe, S. Yachi

    Journal of Applied Ecology 50 1124-1130 2013/10

    DOI: 10.1111/1365-2664.12116  

  55. Invasibility as an emergent property of native metapopulation structure Peer-reviewed

    Arnulf Koehncke, Arndt Telschow, Michio Kondoh

    OIKOS 122 (3) 332-340 2013/03

    DOI: 10.1111/j.1600-0706.2012.20677.x  

    ISSN: 0030-1299

    eISSN: 1600-0706

  56. Causes and consequences of biodiversity loss across global ecosystems Peer-reviewed

    Christopher T Filstrup, W Stanley Harpole, Adam J Heathcote, Jonathan Shurin, Michio Kondoh

    LIMNOLOGY AND OCEANOGRAPHY BULLETIN 21 (4) 98-99 2012/11

  57. Diversity of Interaction Types and Ecological Community Stability Peer-reviewed

    A. Mougi, M. Kondoh

    SCIENCE 337 (6092) 349-351 2012/07

    DOI: 10.1126/science.1220529  

    ISSN: 0036-8075

  58. Variable and complex food web structures revealed by exploring missing trophic links between birds and biofilm Peer-reviewed

    Tomohiro Kuwae, Eiichi Miyoshi, Shinya Hosokawa, Kazuhiko Ichimi, Jun Hosoya, Tatsuya Amano, Toshifumi Moriya, Michio Kondoh, Ronald C. Ydenberg, Robert W. Elner

    ECOLOGY LETTERS 15 (4) 347-356 2012/04

    DOI: 10.1111/j.1461-0248.2012.01744.x  

    ISSN: 1461-023X

  59. Scale Dependence of Predator-Prey Mass Ratio: Determinants and Applications Peer-reviewed

    Takefumi Nakazawa, Masayuki Ushio, Michio Kondoh

    ADVANCES IN ECOLOGICAL RESEARCH, VOL 45: THE ROLE OF BODY SIZE IN MULTISPECIES SYSTEMS 45 269-302 2011

    DOI: 10.1016/B978-0-12-386475-8.00007-1  

    ISSN: 0065-2504

  60. Effects of evolutionary changes in prey use on the relationship between food web complexity and stability Peer-reviewed

    Wakako Yamaguchi, Michio Kondoh, Masakado Kawata

    POPULATION ECOLOGY 53 (1) 59-72 2011/01

    DOI: 10.1007/s10144-010-0212-y  

    ISSN: 1438-3896

  61. Food webs are built up with nested subwebs Peer-reviewed

    Michio Kondoh, Satoshi Kato, Yoshikuni Sakato

    ECOLOGY 91 (11) 3123-3130 2010/11

    DOI: 10.1890/09-2219.1  

    ISSN: 0012-9658

  62. Functional diversity of microbial decomposers facilitates plant coexistence in a plant-microbe-soil feedback model Peer-reviewed

    Takeshi Miki, Masayuki Ushio, Shin Fukui, Michio Kondoh

    PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA 107 (32) 14251-14256 2010/08

    DOI: 10.1073/pnas.0914281107  

    ISSN: 0027-8424

  63. Linking learning adaptation to trophic interactions: a brain size-based approach Peer-reviewed

    Michio Kondoh

    FUNCTIONAL ECOLOGY 24 (1) 35-43 2010/02

    DOI: 10.1111/j.1365-2435.2009.01631.x  

    ISSN: 0269-8463

    eISSN: 1365-2435

  64. Food-chain length and adaptive foraging Peer-reviewed

    Michio Kondoh, Kunihiko Ninomiya

    PROCEEDINGS OF THE ROYAL SOCIETY B-BIOLOGICAL SCIENCES 276 (1670) 3113-3121 2009/09

    DOI: 10.1098/rspb.2009.0482  

    ISSN: 0962-8452

  65. Building trophic modules into a persistent food web Peer-reviewed

    Michio Kondoh

    PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA 105 (43) 16631-16635 2008/10

    DOI: 10.1073/pnas.0805870105  

    ISSN: 0027-8424

  66. Anti-predator defence and the complexity-stability relationship of food webs Peer-reviewed

    Michio Kondoh

    PROCEEDINGS OF THE ROYAL SOCIETY B-BIOLOGICAL SCIENCES 274 (1618) 1617-1624 2007/07

    DOI: 10.1098/rspb.2007.0335  

    ISSN: 0962-8452

  67. Interspecific variation in vessel size, hydraulic conductivity and embolism among broad-leaved trees in semi-arid regions of Kenya Peer-reviewed

    Shoko Kondoh, Hisashi Yahata, Tohru Nakashizuka, Michio Kondoh

    TREE PHYSIOLOGY 26 (7) 899-904 2006/08

    DOI: 10.1093/treephys/26.7.899  

  68. Does foraging adaptation create the positive complexity-stability relationship in realistic food-web structure? Peer-reviewed

    M Kondoh

    JOURNAL OF THEORETICAL BIOLOGY 238 (3) 646-651 2006/02

    DOI: 10.1016/j.jtbi.2005.06.028  

    ISSN: 0022-5193

  69. Habitat fragmentation resulting in overgrazing by herbivores Peer-reviewed

    M Kondoh

    JOURNAL OF THEORETICAL BIOLOGY 225 (4) 453-460 2003/12

    DOI: 10.1016/S0022-5193(03)00279-0  

    ISSN: 0022-5193

    eISSN: 1095-8541

  70. Response to comment on "Foraging adaptation and the relationship between food-web complexity and stability" Invited Peer-reviewed

    M Kondoh

    SCIENCE 301 (5635) 918c 2003/08

    DOI: 10.1126/science.1087539  

    ISSN: 0036-8075

    eISSN: 1095-9203

  71. Evolution of periodicity in insect mate-seeking behaviour: a male-female coevolutionary game model Peer-reviewed

    M Kondoh, JY Ide

    ANIMAL BEHAVIOUR 65 (5) 1013-1020 2003/05

    DOI: 10.1006/anbe.2003.2147  

    ISSN: 0003-3472

  72. High reproductive rates result in high predation risks: A mechanism promoting the coexistence of competing prey in spatially structured populations Peer-reviewed

    M Kondoh

    AMERICAN NATURALIST 161 (2) 299-309 2003/02

    DOI: 10.1086/345939  

    ISSN: 0003-0147

    eISSN: 1537-5323

  73. Foraging adaptation and the relationship between food-web complexity and stability Peer-reviewed

    M Kondoh

    SCIENCE 299 (5611) 1388-1391 2003/02

    DOI: 10.1126/science.1079154  

    ISSN: 0036-8075

    eISSN: 1095-9203

  74. Feedbacks between nutrient cycling and vegetation predict plant species coexistence and invasion Peer-reviewed

    T Miki, M Kondoh

    ECOLOGY LETTERS 5 (5) 624-633 2002/09

    DOI: 10.1046/j.1461-0248.2002.00347.x  

    ISSN: 1461-023X

  75. Mate availability influences filial cannibalism in fish with paternal care Peer-reviewed

    Michio Kondoh, Noboru Okuda

    Animal Behaviour 63 (2) 227-233 2002/02

    DOI: 10.1006/anbe.2001.1915  

    ISSN: 0003-3472

  76. Compensation behaviour by insect herbivores and natural enemies: its influence on community structure Peer-reviewed

    M Kondoh, IS Williams

    OIKOS 93 (1) 161-167 2001/04

    DOI: 10.1034/j.1600-0706.2001.930118.x  

    ISSN: 0030-1299

    eISSN: 1600-0706

  77. Unifying the relationships of species richness to productivity and disturbance Peer-reviewed

    M Kondoh

    PROCEEDINGS OF THE ROYAL SOCIETY B-BIOLOGICAL SCIENCES 268 (1464) 269-271 2001/02

    DOI: 10.1098/rspb.2000.1384  

    ISSN: 0962-8452

  78. Co-evolution of nuptial gift and female multiple mating resulting in with paternal care Peer-reviewed

    Michio Kondoh

    EVOLUTIONARY ECOLOGY RESEARCH 3 75-89 2001/01

  79. Reproductive isolation mechanism resulting from resolution of intragenomic conflict Peer-reviewed

    M Kondoh, M Higashi

    AMERICAN NATURALIST 156 (5) 511-518 2000/11

    DOI: 10.1086/303409  

    ISSN: 0003-0147

  80. Male-female evolutionary game on mate-locating behaviour and evolution of mating systems in insects Peer-reviewed

    J Ide, M Kondoh

    ECOLOGY LETTERS 3 (5) 433-440 2000/09

    DOI: 10.1046/j.1461-0248.2000.00169.x  

    ISSN: 1461-023X

Show all ︎Show first 5

Misc. 34

  1. Dispersion and degradation of environmental DNA from caged fish in a marine environment (vol 85, pg 327, 2019)

    Hiroaki Murakami, Seokjin Yoon, Akihide Kasai, Toshifumi Minamoto, Satoshi Yamamoto, Masayuki K. Sakata, Tomoya Horiuchi, Hideki Sawada, Michio Kondoh, Yoh Yamashita, Reiji Masuda

    FISHERIES SCIENCE 85 (6) 1109-1109 2019/11

    DOI: 10.1007/s12562-019-01341-z  

    ISSN: 0919-9268

    eISSN: 1444-2906

  2. セミナー室 環境DNA分析技術の現状 : 実用に向けたさまざまな取り組みについて(6)環境DNA分析技術が拓く新たな未来 : 生態系観測における環境DNAの役割 Invited

    近藤 倫生

    化学と生物 : 日本農芸化学会会誌 : 生命・食・環境 57 (8) 503-509 2019/08

    Publisher: 日本農芸化学会 ; 1962-

    ISSN: 0453-073X

  3. The eDNA Technology : Theory, Practice and Future Directions Invited

    近藤倫生

    水環境学会誌 41 (4) 118-122 2018/04

    Publisher: 日本水環境学会 ; 1992-

    ISSN: 0916-8958

  4. 舞鶴湾におけるマアジとカタクチイワシの環境DNAの水平・鉛直分布 口頭

    村上 弘章, 山本 哲史, 源 利文, 南 憲吏, 宮下 和士, 深谷 肇一, 尹 錫鎭, 笠井 亮秀, 澤田 英樹, 鈴木 啓太, 益田 玲爾, 山下 洋, 近藤 倫生

    平成30年度日本水産学会春季大会 p.28 2018/03/27

  5. The future impact of eDNA technology : the next steps toward the advanced eco-information society Invited

    近藤倫生

    海洋と生物 40 (1) 60-65 2018/02

    Publisher: 生物研究社

    ISSN: 0285-4376

  6. 食物網の“かたち“を捉える新手法:河川生態系での実証

    加藤義和, 近藤倫生, 石川尚人, 冨樫博幸, 神松幸弘, 吉村真由美, 由水千景, 原口岳, 長田穣, 大手信人, 徳地直子, 奥田昇, 三木健, 陀安一郎

    日本陸水学会大会講演要旨集 83rd 2018

  7. 環境DNAを利用した水産生物観測にむけて Invited

    近藤倫生

    水産海洋研究 81 (4) 313‐315 2017/11/10

    ISSN: 0916-1562

  8. 大量シーケンスと標準DNAを利用した魚類環境DNAの網羅的・定量的モニタリング:京都府舞鶴湾での解析事例

    潮雅之, 潮雅之, 村上弘章, 益田玲爾, 佐土哲也, 宮正樹, 櫻井翔, 山中裕樹, 源利文, 近藤倫生

    水産海洋研究 81 (4) 305‐307 2017/11/10

    ISSN: 0916-1562

  9. JST CREST研究課題「環境DNA分析に基づく魚類 群集の定量モニタリングと生態系評価手法の開発」- 平成 25 年度から平成 30 年度- Invited

    近藤 倫生

    日本数理生物学会ニュースレター 82 12-17 2017/05

  10. 日本作物学会 第242回講演会シンポジウム2 琵琶湖の環境と農業

    猪谷 富雄, 畑 信吾, 大久保 卓也, 谷口 真一, 大塚 泰介, 近藤 倫生, 野田 公夫, 泉 泰弘

    日本作物學會紀事 86 (1) 87-96 2017

    Publisher: 日本作物学会

    DOI: 10.1626/jcs.86.87  

    ISSN: 0011-1848

  11. Future Vision : 私の未来学 1Lの海水から生息する魚の種類と量を知る : 環境DNA調査で生物の資源管理に生かす : 龍谷大学理工学部環境ソリューション工学科 近藤倫生教授

    近藤 倫生, 高橋 綾子

    コンバーテック 44 (12) 2-5 2016/12

    Publisher: 加工技術研究会

    ISSN: 0911-2316

  12. Environmental DNA as a tool for ecological monitoring: Methods and appilication

    Kondoh Michio

    Abstracts of Meeting of the CSSJ 242 (0) 140-140 2016

    Publisher: CROP SCIENCE SOCIETY OF JAPAN

    DOI: 10.14829/jcsproc.242.0_140  

  13. 溶存物質および生物の多元素同位体組成が示す生態系情報:東北太平洋岸地域の例

    陀安一郎, 由水千景, 松林順, 加藤義和, 長田穣, 奥田昇, 斉藤有, 申ギチョル, 中野孝教, 神松幸弘, 近藤倫生, 冨樫博幸, 天野洋典, 栗田豊

    日本生態学会大会講演要旨(Web) 63th P2‐443 (WEB ONLY) 2016

  14. Overcoming the difficulties in community ecology - a comment on the Suzuki award article, Kadowaki (2016)

    KONDOH Michio

    JAPANESE JOURNAL OF ECOLOGY 66 (1) 25-27 2016

    Publisher: The Ecological Society of Japan

    DOI: 10.18960/seitai.66.1_25  

    ISSN: 0021-5007

  15. Coastal Fish Monitoring Using Environmental DNA

    Minamoto Toshifumi, Yamamoto Satoshi, Kasai Akihide, Kondoh Michio

    Bulletin on Coastal Oceanography 53 (2) 173-178 2016

    Publisher: Coastal Oceanography Research Committee, the Oceanographic Society of Japan

    DOI: 10.32142/engankaiyo.53.2_173  

    ISSN: 1342-2758

    More details Close

    Distribution survey methods of macro-organisms using environmental DNA(eDNA)have been rapidly developing in recent years. Environmental DNA analysis can be divided into two major methods, species-specific detection and eDNA metabarcoding. Here we outline these techniques, and we report the preliminary results of an eDNA-based biomass survey of Japanese jack mackere(l Trachurus japonicus). The results showed significantly positive associations between eDNA concentrations from water samples and echo intensity detected by an echo sounder, suggesting that the spatial variation of the eDNA concentration can reflect the local biomass of fish even in marine environments. More detailed distribut ion mapping of coastal fish can be achieved by environmental DNA analysis, and it will contribute in various fields, such as fisheries science, ichthyology, and ecology.

  16. Comments on Nakamura's review paper : some thoughts on long-term ecological research(Miyadi Award)

    Kondoh M

    JAPANESE JOURNAL OF ECOLOGY 65 (1) 13-15 2015

    Publisher: The Ecological Society of Japan

    DOI: 10.18960/seitai.65.1_13  

    ISSN: 0021-5007

  17. 研究室紹介:龍谷大学 理工学部 近藤研究室

    近藤 倫生

    個体群生態学会会報 71 18-20 2014/08

  18. 種間相互作用の多様性は自然のバランスを支えるか : 複雑生態系のパラドクスとその解消

    近藤 倫生, 舞木 昭彦

    科学 83 (3) 282-288 2013/03

    Publisher: 岩波書店

    ISSN: 0022-7625

  19. 【2011年大久保賞受賞者特別寄稿】 研究のすすめかた:論理と情熱と倫理について

    近藤 倫生

    日本数理生物学会ニュースレター 67 1-4 2012/06

  20. Multiple isotope approach for studying material flow and food web structures of stream ecosystems in lake Biwa watershed Peer-reviewed

    Tayasu,I, Okuda,N, Tokuchi,N, Ohte,N, Kondoh,M

    2012 ASLO Aquatic Sciences Meeting 2012

  21. 高次階層システムとしての生態系メタボリズムを駆動するメカニズムは何? サイズスケーリング vs ストイキオメトリー

    福森香代子, 酒井陽一郎, 西松聖乃, 陀安一郎, 近藤倫生, 奥田昇

    日本生態学会第58回大会 2011

  22. Functional diversity of predators alter ecosystem metabolism in experimental lake mesocosms

    Fukumori, K, Y. Sakai, K. Nishimatsu, I. Tayasu, M. Kondoh, N. Okuda

    The 5th International Symposium of the Biodiversity and Evolution Global COE project 2011

  23. 自然食物網をいかにして理解するか:栄養モジュールアプローチ (第6回生物数学の理論とその応用--RIMS研究集会報告集)

    近藤 倫生

    数理解析研究所講究録 1704 (1704) 95-100 2010/08

    Publisher: 京都大学数理解析研究所

    ISSN: 1880-2818

  24. 「野外研究サイトから」連載を振り返って

    田中 健太, 近藤 倫生

    日本生態学会誌 58 (1) 53-56 2008/03

    ISSN: 0021-5007

  25. 「野外研究サイトから」連載を振り返って (<連載>野外研究サイトから:まとめ)

    田中 健太, 近藤 倫生

    日本生態学会誌 58 (1) 53-56 2008

    Publisher: 一般社団法人 日本生態学会

    DOI: 10.18960/seitai.58.1_53  

    ISSN: 0021-5007

    More details Close

    この連載は、日本生態学会誌編集委員の近藤が発案し、企画を田中が手伝う形で、3年間にわたって8つの野外研究サイトを紹介してきた。その間、本格始動した環境省によるプログラム「モニタリングサイト1000」への加盟サイト増加、日本の長期生態研究を推進する公式機関JaLTERの発足など、日本の野外研究サイトを取り巻く状況にも大きな変化が起きた。この小稿では、これまでの連載から見えてきた、優れた野外研究サイトの特色や抱えている問題のいくつかをまとめるとともに、変化しつつある状況の中で今後の展望を述べてみたい。

  26. What the topological approach can and cannot tell about food-web dynamics

    Kondoh Michio

    Abstracts of the Annual Meeting of the Ecological Society of Japan 52 (0) 60-60 2005

    Publisher: ECOLOGICAL SOCIETY OF JAPAN

    DOI: 10.14848/esj.ESJ52.0.60.0  

  27. On food-web complexity, flexibility and population stability

    Kondoh Michio

    JAPANESE JOURNAL OF ECOLOGY 55 (2) 249-261 2005

    Publisher: The Ecological Society of Japan

    DOI: 10.18960/seitai.55.2_249  

    ISSN: 0021-5007

  28. 連載のスタートにあたって(野外研究サイトから(1))

    近藤 倫生

    日本生態学会誌 55 (2) 413-413 2005

    Publisher: 一般社団法人 日本生態学会

    DOI: 10.18960/seitai.55.2_413_1  

    ISSN: 0021-5007

  29. What characterizes an interspecific interaction between native and alien species? - A theoretical consideration on the role of adaptation

    Kondoh Michio

    Abstracts of the Annual Meeting of the Ecological Society of Japan 51 (0) 717-717 2004

    Publisher: ECOLOGICAL SOCIETY OF JAPAN

    DOI: 10.14848/esj.ESJ51.0.717.0  

  30. 生物多様性パターンはどのようにして生み出されるのか?--中規模撹乱仮説と生産性仮説を統合する (特集 生物多様性をめぐって)

    近藤 倫生

    生物科学 53 (4) 195-203 2002/03

    Publisher: 日本生物科学者協会

    ISSN: 0045-2033

  31. Top-down and bottom-up forces structuring biological communities : Theoretical considerations Peer-reviewed

    KONDOH Michio

    2001/03

    DOI: 10.11501/3182999  

  32. 雄親はどれくらい自分の子を喰うべきか? −フィリアル・カニバリズム進化のモデル−

    近藤倫生, 奥田昇

    日本生態学会 1999

  33. Parental investment and filial cannibalism in paternal species

    Kondoh M, Okuda N

    International Ethological Conference 1999

  34. フィリアル・カニバリズムをめぐる雌雄間コンフリクトとその解消

    近藤倫生, 奥田昇

    日本動物行動学会 1998

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Books and Other Publications 14

  1. 環境DNA : 生態系の真の姿を読み解く

    土居, 秀幸, 近藤, 倫生

    共立出版 2021/03

    ISBN: 9784320058163

  2. 生物群集を理解する

    大串, 隆之, 近藤, 倫生, 難波, 利幸

    京都大学学術出版会 2020/09

    ISBN: 9784876983438

  3. Theoretical ecology : concepts and applications

    McCann, Kevin S, Gellner, Gabriel

    Oxford University Press 2020

    ISBN: 9780198824299

  4. 動物学の百科事典

    公益社団法人日本動物学会

    丸善出版 2018/09

    ISBN: 4621303090

  5. Adaptive Food Webs: Stability and Transitions of Real and Model Ecosystems

    John C. Moore, Peter C. de Ruiter, Kevin S. McCann, Volkmar Wolters

    Cambridge University Press 2017/12

    ISBN: 1107182115

  6. Encyclopedia of Theoretical Ecology

    Alan Hastings, Louis Gross

    University of California Press 2012/05

    ISBN: 9780520269651

  7. 新たな保全と管理を考える

    大串, 隆之, 近藤, 倫生, 椿, 宜高

    京都大学学術出版会 2009/12

    ISBN: 9784876983483

  8. 生物間ネットワークを紐とく

    大串, 隆之, 近藤, 倫生, 難波, 利幸

    京都大学学術出版会 2009

    ISBN: 9784876983452

  9. 進化生物学からせまる

    大串, 隆之, 近藤, 倫生, 吉田, 丈人

    京都大学学術出版会 2009

    ISBN: 9784876983445

  10. メタ群集と空間スケール

    大串, 隆之, 近藤, 倫生, 野田, 隆史

    京都大学学術出版会 2008/12

    ISBN: 9784876983476

  11. 生態系と群集をむすぶ

    大串, 隆之, 近藤, 倫生, 仲岡, 雅裕

    京都大学学術出版会 2008/10

    ISBN: 9784876983469

  12. Conceptual ecology and invasions biology: reciprocal approaches to nature

    Cadotte, Marc W, McMahon, Sean M, Fukami, Tadashi (E

    Springer Netherlands 2006/06

    ISBN: 9781402049255

  13. Dynamic Food Webs: Multispecies assemblages, ecosystem development, and environmental change

    Peter de Ruiter Volkmar Wolters John Moore

    Academic Press 2005/12

    ISBN: 9780120884582

  14. Aquatic Food Webs: An Ecosystem Approach

    Andrea Belgrano, Ursula M. Scharler, Jennifer Dunne, Robert E. Ulanowicz

    Oxford University Press 2005/06

    ISBN: 019856483X

Show all Show first 5

Presentations 302

  1. 環境DNAで人間活動と自然の関わりを可視化する+ Invited

    近藤倫生

    NPフォーラム九州#1 KARATSU 2025/03/28

  2. 【環境 - ブレイクアウト セッション】ネイチャーポジティブに向けたICTの可能性

    近藤倫生

    IISEフォーラム2025 『社会課題を解決し、市場を形成する ソートリーダーシップの「本質」と「可能性」 』 2025/02/07

  3. パネルディスカッション:未来の産業・社会を描き出す Invited

    近藤倫生

    創造セミナー Big Sketch for Nature Positive Society 共創型ネイチャーポジティブが実現されている世界を描きだそう 2024/12/14

  4. 生態学視点でのネイチャーポジティブをめぐる検討: 人間を含む自然資本の管理・運用について Invited

    近藤倫生

    第3回生物多様性および自然資本に関する特別研究会 2024/12/06

  5. ネイチャーポジティブについて生態学者が考えること: 複雑性・地域性・マルチステークホルダーの視点

    近藤倫生

    NPプロデューサー養成講座 vol. 0 2024/11/21

  6. 対談:本音で語るネイチャーポジティブ(科学者×企業×地域)

    近藤倫生

    南三陸町いのちめぐるまち学会 2024/11/08

  7. 環境DNA 技術を⽤いた⽣物調査の現状及び可能性 - 環境DNA技術と生物多様性観測ネットワーク:ネイチャーポジティブ経済移行におけるその役割

    近藤倫生

    オール東京62環境担当者研修会 第四回「環境DNA技術を活用した生物調査」 2024/10/29

  8. DNAで環境を探る 〜環境DNA観測網「ANEMONE」と自然共生社会への展望〜 Invited

    近藤倫生

    かずさDNA研究所 開所30周年記念講演会 2024/10/26

  9. ネイチャーポジティブ経済への移行と科学技術の役割:ANEMONEとNP拠点の挑戦 Invited

    近藤倫生

    技術士会環境部会講演会 2024/10/24

  10. 海洋生物多様性の観測・データ活用とこれからの展望 〜海洋の保全と再生に向けた東北大学の取り組み〜

    近藤倫生

    NIKKEIブルーオーシャンフォーラム第8回有識者委員会「スタートアップとデータ活用」 2024/10/22

  11. ネイチャーポジティブ発展社会実現拠点:ネイチャーポジティブ社会への移行を産官学連携で牽引する Invited

    近藤倫生

    NP拠点メディア向け勉強会 2024/10/15

  12. Structure and Dynamics of Ecological Networks: Minimalist Approach to Complex Systems

    Michio Kondoh

    2024/09/21

  13. ネイチャーポジティブ発展社会実現拠点:産官学連携で自然を増やしながら発展する社会を作る

    近藤倫生

    日経SDGsフェス「NIKKEIブルーオーシャンフォーラム」 2024/09/11

  14. 生物多様性をめぐる社会課題と自然科学の役割:大規模観測とモデリング

    近藤倫生

    数理生物学会 夏の学校 2024/09/10

  15. 環境DNA観測網「ANEMONE」の挑戦:ネイチャーポジティブ経済への移行における役割

    近藤倫生

    第182回海洋技術フォーラム 2024/07/02

  16. ネイチャーポジティブ発展社会実現拠点:自然を再生しながら発展する社会の構築に必要なことは何か

    近藤倫生

    COI-NEXT 2024年度第3領域合同シンポジウム 2024/06/20

  17. 環境DNA観測網「ANEMONE」の挑戦:地域主導のネイチャーポジティブ実現に向けて

    近藤倫生

    ビオトープフォーラム2024 2024/06/14

  18. ネイチャーポジティブ発展社会実現拠点:ネイチャーポジティブ社会への移行を産官学連携で牽引する

    2024/06/12

  19. ANEMONE: Initiative for eDNA-Based Biodiversity Monitoring for a Sustainable Future

    Michio Kondoh

    JpGU2024 (日本地球惑星科学連合) 2024/05/27

  20. ネイチャーポジティブの潮流で基礎研究を駆動する:環境DNA観測網「ANEMONE」の運営から見えてきたこと Invited

    近藤倫生

    令和6年度全国臨海臨湖実験所所長会議 2024/05/27

  21. 環境DNA観測網 ANEMONE:ネイチャーポジティブと生物科学の貢献

    近藤倫生

    中国四国地区生物系三学会合同大会岡山大会 2024/05/11

  22. ネイチャーポジティブをリードする連携を生み出す: 環境DNA観測網と産官学連携拠点形成 Invited

    近藤倫生

    ブルーオーシャンイニシアチブ 2024/05/10

  23. ANEMONE and Citizen Science: eDNA Fish Monitoring by Local Community

    Michio Kondoh

    2nd UN Ocean Decade Regional Conference & 11th WESTPAC International Marine Science Conference 2024/04/25

  24. Overview of the ANEMONE project: eDNA in the Indo-Pacific region

    Michio Kondoh

    2nd UN Ocean Decade Regional Conference & 11th WESTPAC International Marine Science Conference 2024/04/24

  25. International Initiative for eDNA-based Biodiversity Monitoring: Uniting for a Sustainable Future of Marine Ecosystem Invited

    Michio Kondoh

    2nd UN Ocean Decade Regional Conference & 11th WESTPAC International Marine Science Conference 2024/04/23

  26. 環境DNAの分析と活用について Invited

    近藤倫生

    日経ブルーオーシャン水産有識者会議 2024/04/08

  27. Dynamics-based characterization of biodiversity indicators based on environmental responsiveness

    Yuri OTOMO, Reiji MASUDA, Yutaka OSADA, Kazutaka KAWATSU, Michio KONDOH

    日本生態学会第71回全国大会 2024/03/21

  28. 環境 DNA 観測網「ANEMONE」:ネイチャーポジティブに向けた 自然科学の役割 Invited

    近藤倫生

    日本化学会第104春期年会

  29. Development and examination of aggregation methods to optimize forecasting population dynamics

    Gen IWASHITA, Michio KONDOH

    日本生態学会第71回全国大会 2024/03/16

  30. Using Bioacoustic Monitoring for Spatial Tracking of Silver Croaker (Pennahia argentata) during courtship

    Keisuke OHTA, Tomonari AKAMATSU, Michio KONDOH

    日本生態学会第71回全国大会 2024/03/16

  31. 自然共生社会の実現に向けた持続可能な自然利用 ~市民や企業にとってのネイチャーポジティブ~ Invited

    近藤倫生

    第2回 おおさきネイチャーポジティブシンポジウム 2024/03/15

  32. Overview of Ecosystem Response, Adaptation and Evolution Mechanisms Invited

    Michio Kondoh

    WPI-AIMEC Kick-Off Symposium 2024/03/08

  33. 自然共生社会の構築に向けた課題:環境DNA観測とデータ駆動型アプローチ Invited

    近藤倫生

    技術士CPDミニ講座 2024/01/15

  34. ANEMONE: An eDNA-based biodiversity monitoring network Invited

    Michio Kondoh

    2023 Korean Society of Environmental DNA 2023/12/14

  35. 環境DNAはネイチャーポジティブにどう貢献するか?

    近藤倫生

    第6回環境DNA学会九州大会 2023/12/05

  36. 東北にネイチャーポジティブ拠点をつくる! Invited

    近藤倫生

    第2回南三陸いのちめぐるまち学会大会 2023/11/23

  37. 日本における環境 DNA を利用した生物多様性観測網 ANEMONE Invited

    近藤倫生

    国際アマモ・ブルーカーボンワークショップ2023 (AMAMO 2023) 2023/11/18

  38. ネイチャーポジティブ成長を支える 高度生物多様性情報インフラ:ANEMONEの挑戦 Invited

    近藤倫生

    東北大学グリーン未来創造機構シンポジウム vol. 3 2023/11/16

  39. ANEMONE: Japan's inclusive network for eDNA-based biodiversity monitoring Invited

    Michio Kondoh

    OceanDNAテック 2023 2023/11/02

  40. 共生ネットワークのレジリエンスと複雑性

    笠原剛樹, 長田穣, 近藤倫生

    第39回個体群生態学会大会

  41. 文脈依存的な種間相互作用の時系列データからの推定

    行平大樹, 長田穣, 近藤倫生

    第39回個体群生態学会大会

  42. 長期の観察から越冬鳥の変動を捉える

    宮本竜也, 近藤倫生

    第39回個体群生態学会大会

  43. ランダム群集における多様性と生態系機能

    長田穣, 近藤倫生

    第39回個体群生態学会大会

  44. 環境DNAと階層ベイズモデルを用いた河川魚類分布推定の緻密化

    伊藤青葉, 香川裕之, 成田勝, 近藤倫生

    第39回個体群生態学会大会

  45. ANEMONEシステムとは何か:環境DNA観測網・データベース・コンソーシアム

    近藤倫生

    第39回個体群生態学会大会

  46. NA Invited

    近藤倫生

    サイエンスアゴラ「ネイチャーポジティブと科学技術」 2023/10/27

  47. ANEMONE: Japan's inclusive network for eDNA-based biodiversity monitoring

    Michio Kondoh, Tanaka Kenta, Hisashi Yamakawa, Masakazu Hori, Reiji Masuda, Satoshi Nagai, Akifumi Tanabe, Masa-aki Yoshida

    GEO BON Global Conference 2023 2023/10/12

  48. 種子散布者が駆動する大型種子の進化

    大室宏平, 舞木昭彦, 近藤倫生

    2023年度数理生物学会年会

  49. 環境変化が引き起こした力学的不安定化を伴う 琵琶湖植物プランクトン群集におけるレジームシフトの実証

    深澤陸, 川津一隆, 一瀬諭, 近藤倫生

    2023年度数理生物学会年会

  50. 植物プランクトン群集を対象とした 動的結合ネットワークのアグリゲーション

    笠原剛樹, 近藤倫生

    2023年度数理生物学会年会

  51. 環境DNA観測とデータ駆動型アプローチで迫る生態系の複雑性

    近藤倫生

    第75回日本生物工学会大会 2023/09/04

  52. Network structure of aggregated phytoplankton community

    Gohki Kasahara, Michio Kondoh

    The 8th CIJK Conference on Mathematical and Theoretical Biology

  53. 環境DNA観測網「ANEMONE」の取り組み:予測可能な自然資本を目指す Invited

    近藤倫生

    JBIB 2023年度社員総会 2023/06/13

  54. ANEMONE: Japan’ s eDNA-based biodiversity monitoring network Invited

    Michio Kondoh

    The eDNA Society International Meeting 2023(第5回大会) 2023/05/17

  55. 環境DNA観測網 ANEMONEとオープンデータ戦略

    近藤倫生

    日本生態学会第71回大会 2023/03/20

  56. 渡り鳥の観察から環境変化への応答を推定する

    宮本竜也, 近藤倫生

    日本生態学会第70回全国大会 2023/03/18

  57. An equation-free Bayesian method for the inference of state-dependent ecological interactions with time series data

    YUKIHIRA, Yutaka OSADA, Michio KONDOH

    日本生態学会第71回全国大会 2023/03/16

  58. ネイチャーポジティブへの科学的道筋:環境DNAの果たしうる役割 Invited

    近藤倫生

    東北大学グリーンゴールズパートナー 第14回グリーンシーズ研究会 2023/03/16

  59. ANEMONE The eDNA-based biodiversity monitoring network in Japan Invited

    The 34th General Assembly of the IUBS , Japanese Marine Station: History, current activity and international network 2023/03/11

  60. 環境DNA観測網ANEMONEとネイチャーポジティブにむけた生物多様性データ活用の展望 Invited

    近藤倫生

    第18回日本LCA学会研究発表会「共催企画セッション2:経済活動が引き起こす自然関連財への影響とLCA」 2023/03/08

  61. Classification of Community Indicators Based on Context-Dependence in Dynamics

    大友優里, 益田玲爾, 長田穣, 川津一隆, 近藤倫生

    第70回日本生態学会大会 2023/03

  62. 植物プランクトン群集を対象とした動的結合ネットワークのアグリゲーション

    笠原剛樹, 近藤倫生

    第70回日本生態学会大会 2023/03

  63. 環境DNA調査から見えてくること~ネイチャーポジティブの実現に向けて~ Invited

    近藤倫生

    第65回 丸の内市民環境フォーラム 2023/02/27

  64. ANEMONE The eDNA-based biodiversity monitoring network in Japan Invited

    Michio Kondoh

    1st Australian & New Zealand Environmental DNA (eDNA) Conference 2023/02/16

  65. 植物プランクトン群集を対象とした動的結合ネットワークのアグリゲーション

    笠原剛樹, 近藤倫生

    東北大学理学生命科学合同シンポジウム 2023/02

  66. 生物多様性とムダのデザイン Invited

    近藤倫生

    FabCafe Kyoto SPCS|Season2「野生と手入れ」 2022/12/17

  67. 環境DNA技術の社会実装: ANEMONEとANEMONE DB、コンソーシアム Invited

    近藤倫生

    環境DNA学会技術セミナー「環境DNAデータベース「ANEMONE DB」を使いこなす」 2022/12/09

  68. 誰もが参加・利用できる環境DNA観測ネットワーク:ANEMONEの挑戦 Invited

    近藤倫生

    一般公開シンポジウム 野生生物モニタリングの現在・未来 ~研究者たちの挑戦 2022/11/20

  69. The eDNA-based approach to ecological complexity: a challenge of ANEMONE Invited

    Michio Kondoh

    MSU-IIT Lecture Series in Mathematical Modelling 2022/11/08

  70. 環境DNA技術を利用した観測ネットワーク「ANEMONE」と山岳域での観測の意義 Invited

    近藤倫生

    山の人×科学者でめざすネイチャーポジティブへの取り組み第1回シンポジウム 2022/11/03

  71. 植物プランクトン群集を対象とした動的結合ネットワークのアグリゲーション

    笠原剛樹, 近藤倫生

    第67回日本生態学会東北地区会 2022/11

  72. 環境DNA観測網ANEMONEの可能性:自然資本を予測可能に変える Invited

    近藤倫生

    生物多様性観測と自然の情報開示 2022/10/31

  73. The eDNA approach to the complex ecological systems Invited

    2022/10/29

  74. Exploring the Structure and Dynamics of Ecological Systems: the Minimalist Approach Invited

    Michio Kondoh

    OIST-Tohoku University 3rd Joint Workshop on Biodiversity 2022/10/24

  75. The value you see in monitoring the living things Invited

    2022/10/22

  76. 海洋×IoT・AI ×ベンチャー・大学がSDGs14に貢献

    近藤倫生, 高倉葉太, 藤原謙 藤田香

    東京サステナブルシーフード・サミット2022 2022/10/21

  77. 環境DNA観測ネットワークの拡がり -運航船舶で生態系の「見える化」に貢献 Invited

    高橋正裕, 近藤倫生

    東京サステナブルシーフード・サミット2022 2022/10/21

  78. 市民が生物多様性の守護者となる社会を目指して:ANEMONEの取り組み Invited

    近藤倫生

    第1回南三陸いのちめぐるまち学会 2022/10/15

  79. ANEMONE: an eDNA-based biodiversity monitoring network Invited

    Michio Kondoh

    PICES-2022 2022/09/29

  80. ANEMONE:an eDNA-based biodiversity monitoring network and its open-data policy Invited

    Michio Kondoh

    2022/09/09

  81. 生物多様性観測網と情報基盤を作る:ANEMONE の取り組み Invited

    近藤倫生

    日本蜘蛛学会第54回大会 2022/08/20

  82. ANEMONE DBについて

    近藤倫生, 髙橋正裕, 遠藤剛, 佐藤仁, 浦辺徹郎

    オープンデータ「ANEMONE DB」の運用開始に関する共同記者会見 2022/06/02

  83. An environmental DNA approach to the complexity of ecological systems Invited

    Michio Kondoh

    OIST-TOHOKU University 2nd Joint Workshop on Marine Science 2022/04/25

  84. Linking the structure and function of microbial community

    2022/03/18

  85. 環境DNAを用いた河川魚類分布の推定:DNAの動態を考慮した階層ベイズモデリング

    伊藤青葉, 香川裕之, 成田勝, 長田穣, 近藤倫生

    第69回日本生態学会大会 2022/03/15

  86. On the characterization of communities using time series data

    Gen IWASHITA, MIchio KONDOH

    2022/03/14

  87. Exploring factors controlling the integrated trophic position (iTP) of food web networks

    Naoto F, ISHIKAWA(JAMSTEC, Ayaka TAKASHIMA(Ryukoku University, Michio KONDOH(Tohoku Universi

    2022/03/14

  88. 魚類個体群動態の状況依存性:原発沿岸地域の長期観察データの非線形時系列解析

    大友優里, 益田玲爾, 長田穣, 川津一隆, 近藤倫生

    第69回日本生態学会大会 2022/03

  89. Estimation of fish distributions in rivers using environmental DNA: a hierarchical Bayesian modeling with DNA dynamics

    2022/03

  90. Detecting Environmental Responses of Organisms from Acoustic Observations: An Application of Nonlinear Time Series Analysis to Acoustic Data

    2022/03

  91. 環境DNAの基礎と自然科学にもたらすインパクト:「教育=観測=社会課題解決」の可能性

    近藤倫生

    東京都生物教育研究会 研修会 2022/02/12

  92. 状況依存性に基づいた生物多様性指標の分類

    大友優里, 益田玲爾, 長田穣, 川津一隆, 近藤倫生

    東北大学理学・生命科学研究科合同シンポジウム 2022/02

  93. 環境DNA観測から生物多様性とその変化を捉える

    近藤倫生

    生物科学学会連合主催公開シンポジウム「気候変動が生物多様性に与える脅威 ~地球はどのくらい危機的状況か~」 2021/12/18

  94. 大規模生態系観測とデータサイエンス が可能にする自然共生社会のかたち

    近藤倫生

    理研-東北大学科学技術ハブシンポジウム・第131回コロキウム環境「環境研究とデータサイエンスの接点とそれから見えるもの」 2021/12/14

  95. バケツ一杯の水を通して見る魚たちの世界 〜環境DNAの基本から実践的な魚類調査まで〜

    近藤倫生

    神奈川県環境科学センター令和3年度第2回環境スキルアップ講座 2021/12/10

  96. 三陸沿岸:豊かな漁場 Invited

    鈴木 将太, 近藤倫生

    環境DNA学会第4回大会 2021/11/21

  97. 環境DNA市民調査の広がり: 地域住民が主人公になる自然共生への道筋 Invited

    近藤倫生

    環境DNA学会第4回大会 2021/11/21

  98. Development and Implementation of an Environmental DNA Research Program to Deepen Citizens' Understanding of Ecosystems

    2021/11/20

  99. Estimating fish distributions in rivers using eDNA: a hierarchical Bayesian modeling approach that takes the eDNA dynamics into account

    Aoba ITO, Hiroyuki KAGAWA, Masaru NARITA, Yutaka OSADA, Michio KONDOH

    2021/11/20

  100. ANEMONE: eDNA Monitoring Network in Japan

    Michio Kondoh

    2021/11/20

  101. 多種の生態系エンジニアを介した群集の形成について

    岩下源, 近藤倫生

    第37回個体群生態学会大会 2021/11/06

  102. 非線形時系列解析から読み解く、群集スケールでの状況依存性

    大友優里, 益田玲爾, 長田穣, 川津一隆, 近藤倫生

    第37回個体群生態学会大会 2021/11/06

  103. 環境DNAを用いた河川の魚類分布の推定: DNAの動態を考慮したモデリング

    伊藤 青葉, 香川 裕之, 成田 勝, 田 穣, 近藤 倫生

    第37回個体群生態学会大会 2021/11/06

  104. 天気予報のように生態系を予報する未来 〜里海の価値を守る仕組みづくり〜 Invited

    近藤倫生

    里海カンファレンス2021 in 南三陸 2021/11/06

  105. 微生物群集ネットワークの構造と動態 Invited

    近藤倫生

    京都大学生態学研究センター共同利用ワークショップ「微生物を軸とした群集構造研究の統合とさらなる展開」 2021/09/24

  106. 観測手法間で観測誤差をどう比較するか:非線形時系列ノイズ削減法による検討

    岩本紘明, 川津一隆, 近藤倫生

    日本生態学会第68回全国大会 2021/03

  107. 環境変動に対する群集動態駆動ルールの反応性:魚類群集観測データの非線形時系列解析

    大友優里, 益田玲爾, 長田穣, 川津一隆, 近藤倫生

    日本生態学会第68回全国大会 2021/03

  108. 人工生態系を12種微生物でつくったら進化やキーストーン種による確率的現象が見えた

    細田一史, 瀬尾茂人, 村上なおみ, 長田穣, 松田秀雄, 近藤倫生

    日本生態学会第68回全国大会 2021/03

  109. 環境DNA観測網を活用した自然共生社会の実現:ANEMONEの取り組み

    近藤倫生

    日本生態学会第68回全国大会 2021/03

  110. 環境DNA観測網がもたらす新しい生態学のかたち Invited

    近藤倫生

    日本生態学会第68回全国大会 2021/03

  111. 生息地改変による群集の形成

    岩下源, 近藤倫生

    日本生態学会第68回全国大会 2021/03

  112. 地点多種の環境DNAデータを利用した河川魚類の分布推定モデル

    遠藤智也, 香川裕之, 成田勝, 長田穣, 近藤倫生

    日本生態学会第68回全国大会 2021/03

  113. イルカの環境応答を検出する:音響データに対する非線形時系列解析の適用

    浅井和成, 赤松友成, Dede AYHAN, Ayaka OTZTURK AMAHA, 長田穣, 近藤倫生

    日本生態学会第68回全国大会 2021/03

  114. 異なる手法に含まれる観測誤差をどう比較するか:非線形時系列ノイズ削減法による検討

    岩本紘明, 川津一隆, 近藤倫生

    環境DNA学会第3回大会・第36回個体群生態学会合同大会 2020/11

  115. 個体群動態の駆動ルールは環境変動にどう反応するか:高浜原発周辺の魚類群集の非線形時系列解析

    大友優里, 益田玲爾, 長田穣, 川津一隆, 近藤倫生

    環境DNA学会第3回大会・第36回個体群生態学会合同大会 2020/11

  116. 魚類群集動態の異常検知:原発温排水サイトにおける長期観測データの解析

    大友優里, 益田玲爾, 長田穣, 川津一隆, 近藤倫生

    日本生態学会第67回全国大会 2020/03

  117. 生物が生息地改変する場合の群集形成のモデル

    岩下源, 近藤倫生

    日本生態学会第67回全国大会 2020/03

  118. イルカの声から明らかにする環境との関係

    浅井和成, 赤松友成, Dade AYHAN, Ayaka Amaha OTZTURK, Tonay M ARDA, 長田穣, 近藤倫生

    日本生態学会第67回全国大会 2020/03

  119. 一次生産要求量は栄養位置と転換効率から予測できるか?

    高嶋あやか, 近藤倫生

    日本生態学会第67回全国大会 2020/03

  120. 植物プランクトンの変動メカニズムは時間変化するか:分類階級間の比較

    石川佳穂, 池田将平, 一瀬諭, 長田穣, 川津一隆, 京極大助, 古田世子, 近藤倫生

    日本生態学会第67回全国大会 2020/03

  121. 河川の環境DNAデータから魚類分布を推定する

    遠藤智也, 成田勝, 香川裕之, 長田穣, 近藤倫生

    日本生態学会第67回全国大会 2020/03

  122. 内浦湾において原発温排水に反応した魚種の特定: 非線形時系列解析によるアプローチ

    小杉奏太, 益田玲爾, 長田穣, 川津一隆, 近藤倫生

    日本生態学会第67回全国大会 2020/03

  123. 微生物間相互作用の時系列解析

    東豊浩, 加藤広海, 長田穣, 近藤倫生

    日本生態学会第67回全国大会 2020/03

  124. 生物群集の複雑さと生態系機能の関係

    長田穣, 近藤倫生

    日本生態学会第67回全国大会 2020/03

  125. Toward understanding ecosystem dynamics by creating 10,000 synthetic ecosystems

    2020/03

  126. 生物群集ネットワークの構造と動態 Invited

    近藤倫生

    第16回 生物数学の理論とその応用 -生命現象の定量的理解に向けて- 2020/01

  127. 環境DNA技術の社会実装にむけて:高度生態系観測がもたらす未来 Invited

    近藤倫生

    三重県環境保全事業団 環境DNAセミナー 2019/12/19

  128. Complexity and Stability of Ecological Systems: What is “Balance of Nature”? Invited

    KONDOH Michio

    2019/12/05

  129. 環境DNA技術:バケツ一杯の水から生態系を把握する Invited

    近藤倫生

    2019年度第7回理事長記者説明会 2019/11/08

  130. Ecological community: linking structure to dynamics Invited

    KONDOH Michio

    2019/10/07

  131. 沿岸部の局所温暖化に伴う魚類群集の変化

    大友優里, 益田玲爾, 長田穣, 近藤倫生

    第35回個体群生態学会大会 2019/09/27

  132. 環境DNA観測ネットワーク:構築と活用の提案

    近藤倫生

    第35回個体群生態学会大会 2019/09/27

  133. 生態学は生物群集デザインに 活用できるか? Invited

    近藤倫生, 東 豊浩, 加藤 広海, 川津 一隆, 長田 穣, 永田 裕二

    第71回日本生物工学会大会 2019/09

  134. 花序が閉じるタイミングを決めるのは誰か?:花粉の出し手 vs. 受け手

    京極大助, 片岡由太郎, 近藤倫生

    第83回日本植物学会大会 2019/09/16

  135. 土壌細菌叢の液体培養系における遷移の動態解析

    東 豊浩, 加藤 広海, 長田 穣, 永田 裕二, 近藤 倫生

    日本微生物生態学会 第33回大会

  136. 植物プランクトンの変動メカニズムは時間 変化するか:分類階級間の比較

    石川佳穂, 池田将平, 一瀬諭, 長田穣, 川津一隆, 京極大助, 古田世子, 近藤倫生

    第84回日本陸水学会 2019/09

  137. 生態系の構造とダイナミクスを理解する:データ駆動型アプローチ Invited

    近藤倫生

    第13回細菌学若手コロッセウム in みやぎ蔵王 2019 2019/08/18

  138. Does ecological complexity stabilize the community against external disturbances? - an empirical test based on a data-driven approach Invited

    KONDOH Michio

    URPP Global Change and Biodiversity, Conference 2019/07/04

  139. 環境DNA技術の現在と今後の展望:高度生態情報社会の実現に向けて Invited

    近藤倫生

    地球環境カレッジ 第167 回定例講演会 2019/06/24

  140. 生態系の複雑なダイナミクスを理解する: データ駆動型アプローチの提案

    近藤倫生

    秋田県立大セミナー 2019/05/29

  141. The future of ecological monitoring based on eDNA analysis Invited

    KONDOH Michio

    Lecture in Kyung-Hee Univ., Seoul 2019/05/23

  142. 環境DNA 技術の現在と展望: 高度生態情報社会の実現に向けて Invited

    近藤倫生

    2019年度 公益社団法人日本水環境学会東北支部講演会 2019/05/18

  143. 生物群集の構造と動態をどう理解するか Invited

    近藤倫生

    弘前大セミナー 2019/05/13

  144. Structure and Dynamics of Community Network: A Minimalist Approach Invited

    KONDOH Michio

    2019/03/19

  145. 琵琶湖におけるプランクトン動態を予測する

    石川佳穂: 池田将平, 一瀬諭, 長田穣, 川津一隆, 京極大助, 古田世子, 近藤倫生

    日本生態学会第66回全国大会 2019/03

  146. キーストーン種は時間変化するか?琵琶湖の植物プランクトン群集を例に

    Ryosuke Akaishi, Shohei Ikeda, Satoshi Ichise, Yutaka Osada, Kazutaka Kawatsu, Daisuke Kyogoku, Seiko Furuta, Michio Kondoh

    日本生態学会第66回全国大会 2019/03

  147. プロジェクトの紹介/環境DNA学会への発展について Invited

    近藤 倫生

    CREST「海洋生物多様性」研究領域シンポジウム「環境 DNA 技術の現在:生態系観測の未来を展望する 」 2019/01/29

  148. 大規模生態系データは何をもたらすか〜環境 DNA 観測の将来 Invited

    近藤 倫生

    第64回日本水環境学会セミナー 2019/01/25

  149. 環境DNAを利用した生態系観測-現状と今後の展開- Invited

    近藤 倫生

    建設コンサルタンツ協会東北支部環境専門委員会セミナー 2019/01/16

  150. 環境DNAメタバーコーディングを利用した生態系観測とその可能性 Invited

    近藤 倫生

    日本生態学会東北地区会 2018/12/10

  151. Are keystone roles played by different species with turnover in a plankton community? International-presentation

    Ryosuke Akaishi, Michio Kondoh

    6th Taiwan-Japan Ecology Workshop 2018/11/22

  152. A Data Driven Approach to Community Networks International-presentation Invited

    Michio Kondoh, Kazutaka Kawatsu, Yutaka Osada, Masayuki Ushio

    6th Taiwan-Japan Ecology Workshop 2018/11/22

  153. 環境DNAを利用した生態系観測 〜現状と今後の展開〜 Invited

    近藤 倫生

    応用生態工学会仙台東北地域研究発表・シンポジウム 2018/11/10

  154. 生物の複雑な相互作用系をいかにして理解するか 生物群集へのミニマリストアプローチを例に

    近藤 倫生

    勉強会「近藤理論を個体生物学に適用したい」 2018/10/23

  155. 群集理論をいかにしてテストするか:EDMを利用した時系列解析手法の可能性 Invited

    近藤 倫生

    第34回個体群生態学会 2018/10/05

  156. Multi-site, high-frequency monitoring of marine ecosystem using environmental DNA International-presentation Invited

    Michio Kondoh, Hitoshi Araki, Akihide Kasai, Reiji Masuda, Toshifumi Minamoto, Masaki Miya, Satoquo Seino

    PICES-2018 Annual Meeting 2018/10

  157. 環境DNA観測に基づく大規模生態系データの獲得:高度生態情報社会の可能性 Invited

    近藤 倫生

    第1回環境DNA学会東京大会 2018/09/29

  158. Evaluation of the fish distribution and their environmental DNA in a semi-closed bay using a three-dimensional tracer model

    2018/09

  159. 環境DNA濃度の定量データと流動モデルの統合による個体数・生物量の推定

    深谷肇一, 村上弘章, 尹錫鎭, 南憲吏, 長田穣, 山本哲史, 益田玲爾, 笠井亮秀, 宮下和士, 源利文, 近藤倫生

    第1回環境DNA学会東京大会 2018/09

  160. ムダの進化とは何か:群集生態学と行動生態学をつなぐ

    近藤倫生, 山道真人, 川津一隆, 土畑重人, 辻和希, 京極大助

    日本進化学会第20回大会 2018/08

  161. 「複雑性」を理解する 生態学の挑戦

    近藤 倫生

    東北大学生命科学研究科新任教授講演会 2018/06/28

  162. 環境DNA技術と高度生態情報社会の可能性 Invited

    近藤 倫生

    東北大学生命科学交流ミーティング 2018/06/22

  163. バケツ一杯の水を使った生態系調査〜環境DNAとは何か〜 Invited

    近藤 倫生

    東北緑化環境保全株式会社勉強会 2018/06/08

  164. 群集生態学の限界とデータ駆動型アプローチによる解決

    近藤 倫生, 川津 一隆, 長田 穣, 京極 大助, 潮 雅之

    第65回日本生態学会大会 2018/03/16

  165. 「行動」と「生態」をつなぐ:長期昆虫群集動態の時系列解析

    川津一隆, 潮雅之, Van Veen Frank, 近藤倫生

    第65回日本生態学会大会 2018/03/16

  166. アズキゾウムシ2系統とヨツモンマメゾウムシの間の繁殖干渉

    野口 功貴, 京極 大助, 近藤 倫生

    第65回日本生態学会大会 2018/03/15

  167. 動態の変化は「本当に」相互作用が原因か?:マメゾウムシ実験系の時系列解析

    川瀬貴礼, 川津一隆, 京極大助, 長田穣, 片山昇, 近藤倫生

    第65回日本生態学会大会 2018/03/15

  168. Ecological Networks: Linking the structural complexity to dynamic stability International-presentation Invited

    KONDOH Michio

    2018 International Workshop on Mathematical Biology 2018/01/08

  169. 水産生物のモニタリングに向けて Invited

    近藤 倫生

    第47回北洋研究シンポジウム—環境DNAを用いた水産生物のモニタリング 2017/06/17

  170. Numerical simulation on distribution of environmental DNA of Japanese jack mackerel (Trachurus japonicus) in a semi-closed bay

    Seokjin Yoon, Akihide Kasai, Satoshi Yamamoto, Toshifumi Minamoto, Kenji Minami, Kazushi Miyashita, Reiji Masuda, Michio Kondoh

    KOSFAS Spring meeting 2017/05/12

  171. 環境DNA技術を利用した広域長期生物多様性観測の実現に向けて:今後の展望と解決すべき課題 Invited

    近藤 倫生

    日本分析化学会 2017/05

  172. 三栄養段階系の理想自由分布に関する理論的研究

    柿本采耶, 近藤倫生

    第64回日本生態学会大会 2017/03/14

  173. 食物網における栄養転換効率の栄養段階依存性〜生態系レベル・種レベルの比較〜

    梅田あやか, 近藤倫生

    第64回日本生態学会大会 2017/03

  174. 繁殖干渉の強さは生息密度に依存するか?

    Teppei ARIKAWA, 片山昇, 天井弘基, 川瀬貴礼, 川津一隆, 京極大助, 近藤倫生

    第64回日本生態学会大会 2017/03

  175. ヤナギ上の節足動物群集におけるCCMを用いた相互作用ネットワーク解析

    曽我夏希, 米谷衣代, 川津一隆, 片山昇, 近藤倫生

    第64回日本生態学会大会 2017/03

  176. 成虫期干渉型競争と幼虫期消費型資源競争によって駆動される2種競争系

    川瀬貴礼, 京極大助, 近藤倫生

    第64回日本生態学会大会 2017/03

  177. 生物の共存に果たす密度依存の重要性:非線形時系列解析を用いた動的群集での検証

    川津一隆, 長田穣, 石井弓美子, 近藤倫生

    第64回日本生態学会大会 2017/03

  178. 植物の揮発性物質のパターンと節足動物群集組成の関係

    米谷衣代, 川津一隆, 片山昇, 近藤倫生

    第64回日本生態学会大会 2017/03

  179. 植物が放出する揮発性物質の組成の動態〜植物の枝間・個体間での比較〜

    関本紫帆, 米谷衣代, 川津一隆, 片山昇, 近藤倫生

    第64回日本生態学会大会 2017/03

  180. 舞鶴湾におけるマアジの環境DNA分布に関する数値実験

    尹錫鎭, 笠井亮秀, 山本哲史, 源利文, 南憲吏, 宮下和士, 益田玲爾, 近藤倫生

    2016年度水産海洋学会研究発表大会, 2016/11

  181. Habitat complexity gives rise to a stabilizing effect of food-web complexity

    Akihiko Mougi, Michio Kondoh

    2016/11

  182. 環境DNAを利用した生態系モニタリングとその可能性 Invited

    近藤 倫生

    日本作物学会, シンポジウム「琵琶湖の環境と農業」 2016/09/10

  183. Mathematical and Statistical Modeling to Bridge the Gap between Empirical and Theoretical Research in Ecology

    KONDOH Michio

    The 2016 (26th) annual meeting of the Japanese Society for Mathematical Biology 2016/09

  184. On relating the structure of interaction network to the community dynamics International-presentation Invited

    近藤 倫生

    International School and Conference on Networks Science (NetSci2016) 2016/05

  185. 舞鶴湾におけるマアジとカタクチイワシの環境DNAの水平・鉛直分布

    村上弘章, 山本哲史, 源利文, 南憲吏, 宮下和士, 深谷肇一, 尹 錫鎭, 笠井亮秀, 澤田英樹, 益田玲爾, 山下洋, 近藤倫生

    平成30年度日本水産学会春季大会 2016/03/27

  186. 群集生態学における種間相互作用論とその限界(企画集会「新しい群集生態学 〜理論-実証間ギャップを飛び越える〜」)

    近藤 倫生

    第63回日本生態学会大会 2016/03/22

  187. キーストーン種はどのような生態系で現れやすいのか

    今井愛理, 高嶋あやか, 近藤倫生

    第63回日本生態学会大会 2016/03/20

  188. 食物網における栄養転換効率の栄養段階依存性〜21の水域食物網を比較して〜

    高嶋あやか, 近藤倫生

    第63回日本生態学会大会•企画集会「新しい群集生態学 〜理論-実証間ギャップを飛び越える〜」 2016/03/20

  189. 環境DNAから探る沿岸魚類の種組成とその現存量

    近藤 倫生

    公開シンポジウム「海洋の多様性保全と次世代水産業を拓く新技術」 2016/03/12

  190. 環境DNA:生物モニタリングの新しい技術 Invited

    近藤 倫生

    第27回 龍谷大学 新春技術講演会 2016/01/13

  191. 『環境DNA』を用いた生態系調査技術と新しい水環境管理法としての可能性 Invited

    近藤 倫生

    第6回REC BIZ-NET研究会, 龍谷大学 2015/11/25

  192. Applications of nonlinear time series analysis to microbial ecology studies International-presentation Invited

    Ushio, M, Hsieh, C-H, Masuda, R, Kondoh, M

    2015 JSME annual meeting & 7th JTK symposium 2015/10/18

  193. 進化生態学を群集生態学につなげる:無駄の進化と多種共存機構 Invited

    近藤倫生, 川津一隆, 潮雅之, 山道真人

    進化群集生態学シンポジウム, 京都大学 2015/09/25

  194. Interspecific interactions, diversity and the stability of a natural fish community International-presentation Invited

    Ushio, M, Hsieh, C-H, Masuda, R, Deyle, E, Ye, H, Chang, C-W, Sugihara, G, Kondoh, M

    International Workshop on Development and Application of Empirical Dynamic Modeling and Forecasting for Nonlinear System, National Taiwan University, Taipei, Taiwan 2015/09/16

  195. Ecological Complexity and Community Stability International-presentation Invited

    近藤 倫生

    2015 Joint Meeting of The 5th China-Japan-Korea Colloquium on Mathematical Biology and The Japanese Society for Mathematical Biology 2015/08/29

  196. 環境DNAを用いた魚類モニタリング Invited

    源利文, 近藤倫生, 笠井亮秀

    沿岸海洋シンポジウム 2015/03/21

  197. On what shapes the food-web structure: Adaptation- and ecology-oriented views International-presentation Invited

    KONDOH Michio

    Community Network Approach to Ecological Complexity – A workshop to identify the “right” questions, Muenster University 2015/03/11

  198. 複雑食物網における栄養転換効率とは何か

    高嶋あやか, 近藤倫生

    第62回日本生態学会大会 2015/03

  199. eDNA解析による舞鶴湾におけるマアジ資源量の推定

    山本哲史, 南憲吏, 深谷肇一, 益田玲爾, 宮下和士, 近藤倫生, 源利文

    第62回日本生態学会大会 2015/03

  200. Ecological Complexity and Biodiversity Maintenance: A Community Network Approach International-presentation Invited

    KONDOH Michio

    EAWAG 2015/02/26

  201. Complexity of Interaction Network and ”Unexpected" Response of Ecological Communities International-presentation Invited

    KONDOH Michio

    ETT-Fellow Introductory Lecture, Muenster University 2015/02/12

  202. Ecological Complexity and Biodiversity Maintenance: A Community Network Approach International-presentation Invited

    KONDOH Michio

    Goettingen University 2015/01/29

  203. 生物進化が多種共存に及ぼす影響: 理論的枠組みの提案 Invited

    近藤 倫生

    CER公募研究集会「進化と生態の階層間相互作用ダイナミクス」、生態学研究センター 2014/12/14

  204. Indirect effect of environmental change and community complexity International-presentation Invited

    KONDOH Michio

    4th Taiwa-Japan Ecology Workshop 2014/11

  205. 生態学的個体群制御と群集ネットワークの複雑性

    近藤倫生, 舞木昭彦

    第 30 回個体群生態学会大会 2014/10

  206. 生物群集ネットワークの構造と動態 Invited

    近藤 倫生

    名無しセミナー、琉球大学 2014/08/19

  207. 生物群集ネットワークの構造と動態 Invited

    近藤 倫生

    「ネットワークの科学」、国際高等研究所 2014/08/05

  208. Marine fish surveys using environmental DNA International-presentation

    Minamoto, T, Masuda, R, Takahashi, K, Maruyama, A, Yamanaka, H, Kasai, A, Kondoh, M

    2014 ESA Annual Meeting, Sacramento, California, USA 2014/08

  209. Diversity of interaction types and community stability International-presentation

    Mougi, A, Kondoh, M

    2014 ESA Annual Meeting, Sacramento, California, USA 2014/08

  210. Diversity of interaction types and community stability International-presentation

    Mougi, A, Kondoh, M

    The Joint Annual Meeting of JSMB and SMB 2014/07

  211. 生物群集の複雑性と安定性 Invited

    近藤 倫生

    土曜応用数学サロン 2014/05/10

  212. Environmental DNA release velocity from different sized fish

    Maruyama, A, Nakamura, K, Yamanaka, H, Kondoh, M, Minamoto. T

    2014/03

  213. ワクチン接種率が感染動態に及ぼす影響

    小林千草, 近藤倫生

    日本生態学会第61回全国大会 2014/03

  214. 協力行動はグループからの離脱によって維持される

    吉川萌美, 近藤倫生

    日本生態学会第61回全国大会 2014/03

  215. Bioaccumulation as an interactive consequence of ecological and physiological processes : a theoretical model

    中井信吾, 近藤倫生

    2014/03

  216. Stable isotope analysis and food-web unfolding

    Kondoh, M, Miki, T, Kato, S

    日本生態学会第61回全国大会 シンポジウム, Use of various isotope tools in watershed ecology 2014/03

  217. What generates the stabilising effect of interaction-type diversity in ecological communities? Invited

    Mougi, A, Kondoh, M

    2013/10/12

  218. Interaction-type diversity and complexity-stability relationship of community network International-presentation

    KONDOH Michio

    Food Webs: Science with Impact、Schloss Rauischholzhausen. Giessen, Germany 2013/10

  219. Stability of ecological community with three interaction types

    Mougi, A, Kondoh, M

    第23回日本数理生物学会大会 2013/09

  220. 漁獲量を観測データとして用いた状態空間モデルによる琵琶湖の魚類個体群動態の推定

    奥田武弘, 酒井陽一郎, 近藤倫生

    日本生態学会第60回大会 2013/03

  221. 生態系・代謝過程を考慮した生物濃縮モデル

    中井信吾, 近藤倫生

    日本生態学会第60回大会 2013/03

  222. リズムを主題に生理学と生態学をつなぐ

    近藤 倫生

    日本生態学会第60回大会 2013/03

  223. 生物群集ネットワークの構造と動態

    近藤 倫生

    第297回岡山大学昆虫学土曜セミナー 2012/12/15

  224. 種間相互作用の多様性と群集動態の安定性 Invited

    近藤 倫生

    大阪大学セミナー 2012/11/07

  225. Basic concepts in community network analysis International-presentation

    近藤 倫生

    Global COE Program at Hokkaido University “Program for promoting participation in the ecological research network between Japan and Taiwan: toward better projection of ecological responses to climate changes” 2012/11

  226. Species invasibility and native meta-population structure

    A. Koehncke, A. Telschow, M. Kondoh

    2012/10

  227. 生物濃縮における生態系過程と代謝過程

    中井信吾, 近藤倫生

    第28回個体群生態学会 2012/10

  228. 新しい多種共存メカニズム:種間相互作用の多様性

    舞木昭彦, 近藤倫生

    第22回数理生物学会 2012/09

  229. Species invasibility and native meta-population structure

    A. Koehncke, A. Telschow, M. Kondoh

    第22回数理生物学会 2012/09

  230. Ecological complexity and biodiversity maintenance: a community network approach International-presentation Invited

    KONDOH Michio

    Annual Meeting of Society for Mathematical Biology 2012/07

  231. Multiple isotope approach for studying material flow and food web structures of stream ecosystems in Lake Biwa watershed International-presentation

    I. Tayasu, N. Okuda, N. Tokuchi, N. Ohte, M. Kondoh

    2012 ASLO Aquatic Science Meeting 2012/07

  232. Scale dependence of predator-prey mass ratio: determinants and applications International-presentation

    T. Nakazawa, M. Ushio, M. Kondoh

    2012 ASLO Aquatic Science Meeting 2012/07

  233. Nested food webs; implications for structure-dynamics relationships International-presentation

    KONDOH Michio

    2012 ASLO Aquatic Science Meeting 2012/07

  234. What maintains the biodiversity of interacting species: a theoretical perspective International-presentation Invited

    KONDOH Michio

    International Symposium “Advances in Theory of Species Interactions: Linking Individual Behavior, Population Processes and Community Dynamics” 2012/06

  235. 捕食者と被食者の体サイズ比のスケール依存性

    仲澤剛史, 潮雅之, 近藤倫生

    第59回日本生態学会・第5回東アジア生態学会連合合同大会 2012/03

  236. 相互作用ネットワークとしての生物群集理解:展望と限界

    KONDOH Michio

    Joint Meeting of the 59th Annual Meeting of ESJ and the 5th EAFES International Congress 2012/03

  237. 生物群集のスケールとパターンをどう捉えるか Invited

    近藤 倫生

    研究集会「生態系の数学的研究に向けて」 2012/02

  238. 混成群集ネットワークと個体群動態の安定性

    舞木昭彦, 近藤倫生

    個体群生態学会第27回大会 2011/10

  239. 大久保賞受賞講演 食物網をめぐる生態学:群集構造と動態をむすぶ Invited

    近藤 倫生

    第21回日本数理生物学会年会 2011/09

  240. 宇宙箱船から見えてくる生物多様性

    近藤 倫生

    京都大学宇宙総合学研究ユニット シンポジウム「人類はなぜ宇宙に行くのか〜宇宙生存学における課題〜」 2011/03

  241. 高次階層システムとしての生態系メタボリズムを駆動するメカニズムは何? サイズスケーリング vs ストイキオメトリー

    福森 香代子, 酒井 陽一郎, 西松 聖乃, 陀安 一郎, 近藤 倫生, 奥田 昇

    第58回日本生態学会大会 2011/03

  242. メタ群集における捕食-被食食物網の安定性に与える共進化と移動分散の効果

    山口 和香子, 大野 ゆかり, 近藤 倫生, 河田 雅圭

    第58回日本生態学会大会 2011/03

  243. 栄養モジュール動態の生息地特性への応答

    梅田 隆利, 近藤 倫生

    第58回日本生態学会大会 2011/03

  244. 文献調査に基づく60年代琵琶湖食物網の構築

    高嶋 あやか, 近藤 倫生

    第58回日本生態学会大会 2011/03

  245. 陸域相利系における発見が水域群集に適用されるとき:群集ネスト構造をめぐる発見と迷走

    近藤 倫生

    第58回日本生態学会大会 2011/03

  246. Linking the community structure to ecosystem properties via food-web unfolding International-presentation Invited

    KONDOH Michio

    International Symposium in Isotope Ecology 2010 in Kyoto 2010/11

  247. A consideration of the scale at which food-web structure constrains population dynamics International-presentation

    KONDOH Michio

    British Ecological Society Annual Meeting (Leeds, UK) 2010/09

  248. 食物網構造から適応の痕跡を読み取る

    近藤 倫生

    第26回個体群生態学会 2010/09

  249. メタボリズム理論を個体群・群集・生態系の理解に活かす

    第57回日本生態学会 企画集会「捕食・被食系の新しい展開(企画:奥田 昇、岩田 智也)」(東京) 2010

  250. メタ群集における共進化と食物網構造:多種の捕食-被食群集モデル(共著:山口 和香子、大野 ゆかり、近藤 倫生、河田 雅圭)

    第57回日本生態学会 企画集会「共進化生態学の新天地を求めて(企画:東樹 宏和)」(東京) 2010

  251. 生物群集理解の基本的枠組みと問いかけ

    第57回日本生態学会 企画集会「群集生態学の新しい展開:生物群集とは何か(企画:近藤 倫生)」(東京) 2010

  252. Food web structure, community dynamics and population level adaptation International-presentation Invited

    International Forum of Ecosystem Management Applying to Ecosystem Adaptability Science (Sendai, Japan) 2010

  253. 捕食者と被食者の脳サイズ:277種の魚における623ペアの捕食-被食関係の解析

    第24回日本個体群生態学会(東京) 2009

  254. 食物網の維持機構:栄養モジュール研究からわかることわからないこと

    第19回日本数理生物学会大会 研究奨励賞受賞記念講演(東京) 2009

  255. 被食者の可用性と消費者の集合分布パターン(共著:加藤 聡史、近藤 倫生、土居 秀幸、片野 泉)

    第19回日本数理生物学会大会(東京) 2009

  256. 栄養モジュールを組み立てて安定な食物網をつくる

    第56回日本生態学会 企画集会「捕食・被食系の新しい展開(企画:舞木 昭彦)」(盛岡) 2009

  257. グンバイがセイタカアワダチソウ上の昆虫群集に及ぼす影響(共著:秋山賢太、近藤倫生、安東義乃)

    第56回日本生態学会(盛岡) 2009

  258. 適応的捕食と食物連鎖長

    第24回日本個体群生態学会(東京) 2008

  259. 捕食者としてのヒト:食物網におけるその生態学的特徴(高井健太を筆頭著者とする共著)

    第55回日本生態学会(福岡) 2008

  260. 森林の被陰関係ネットワークとその構造(近藤健太を筆頭著者とする共著)

    第55回日本生態学会(福岡) 2008

  261. Anto-predator defence and the complexity-stability relationship of food web

    Joint Annual Meeting of SMB & JSMB (San Jose, US) 2007

  262. Food-chain length and adaptive foraging: What food web ecology can take from behavioral ecology

    ESA/SER Joint Meeting (San Jose, US) 2007

  263. 生産性と食物連鎖長(二宮邦彦を筆頭著者とする共著)

    第54回日本生態学会(松山) 2007

  264. 食物網におけるネスト構造(坂戸 克匡を筆頭著者とする共著)

    第54回日本生態学会(松山) 2007

  265. Anto-predator defence and the complexity-stability relationship of food web

    Joint Annual Meeting of SMB & JSMB (San Jose, US) 2007

  266. Food-chain length and adaptive foraging: What food web ecology can take from behavioral ecology

    ESA/SER Joint Meeting (San Jose, US) 2007

  267. 適応による形質変化が個体群と群集の動態に影響する

    第54回日本生態学会 自由集会「群集生態学における適応:進化・可塑性と生物群集の相互関係」(企画:吉田 丈人、大串 隆之、近藤 倫生)」(松山) 2007

  268. 食物網の構造と安定性

    九州大学理学部シンポジウム「つながりの科学」(福岡) 2007

  269. Food web as an adaptive multiagent system: its structure, dynamics and maintenance

    Advances in Food-Web Theory and its Application to Ecological Risk Assessment (Yokohama, Japan) 2006

  270. Quick adaptation, food-web structure and population dynamics

    Recent Topics in Theoretical Evolutionary Ecology (Otsu, Japan) 2006

  271. Adaptive ecological networks: its structure and dynamics

    Biodiversity and Dynamics of Communities and Ecosystems (Osaka, Japan) 2006

  272. Food web as an adaptive multiagent system: its structure, dynamics and maintenance

    Advances in Food-Web Theory and its Application to Ecological Risk Assessment (Yokohama, Japan) 2006

  273. Quick adaptation, food-web structure and population dynamics

    Recent Topics in Theoretical Evolutionary Ecology (Otsu, Japan) 2006

  274. Adaptive ecological networks: its structure and dynamics

    Biodiversity and Dynamics of Communities and Ecosystems (Osaka, Japan) 2006

  275. Ecological network of who eats whom: its structural flexibility and stability

    PICS Conference “Mathematical Analysis of Complex Phenomena in Life Sciences” (Tokyo, Japan) 2005

  276. The complexity-stability relationships of adaptive food webs

    50th NIBB Conference “Structure and Dynamics of Biological Networks” (Okazaki, Japan) 2005

  277. 生態系ネットワークの柔軟性が「自然のバランス」を支える

    第11回交通量のシミュレーションシンポジウム(名古屋) 2005

  278. Ecological network of who eats whom: its structural flexibility and stability

    PICS Conference “Mathematical Analysis of Complex Phenomena in Life Sciences” (Tokyo, Japan) 2005

  279. 食物網動態研究におけるトポロジー的アプローチの功罪

    第52回日本生態学会 大会シンポジウム「食物網理論と実証研究のダイアログ:なにがわかっているのか、そしてどこにすすむべきか? (企画:Axel G. Rossberg、吉田 勝彦、近藤 倫生)」(大阪) 2005

  280. The complexity-stability relationships of adaptive food webs

    50th NIBB Conference “Structure and Dynamics of Biological Networks” (Okazaki, Japan) 2005

  281. Adaptive behaviour, food web flexibility and population stability

    Symposium on Mathematical Biology (Higashi Hiroshima, Japan) 2004

  282. Biodiversity and flexible community structure International-presentation Invited

    FMAP Japan Steering Group Meeting (Kyoto, Japan) 2004

  283. Adaptive behaviour, food web flexibility and population stability

    Symposium on Mathematical Biology (Higashi Hiroshima, Japan) 2004

  284. 複雑な種間相互作用が生物多様性を維持する:「柔軟な食物網」仮説の提案 Invited

    第51回日本生態学会大会 宮地賞受賞記念講演(釧路) 2004

  285. 侵入種と在来種の種間相互作用を特徴付けるのはなにか?:適応の役割に関する理論的考察

    第51回日本生態学会大会(釧路) 2004

  286. 複雑な食物網が生物多様性を守る:「適応的食物網」仮説の提案

    第6回日本進化学会 シンポジウム「生物間相互作用から見た生物多様性の進化」(仙台) 2004

  287. 複雑な食物網が生物多様性を維持する:「柔軟な食物網」仮説の提案

    第4回地域生態系共同研究プロジェクト研究集会「環境と生物間相互作用」(堺) 2004

  288. Foraging adaptation creates positive relationships between food-web complexity and stability International-presentation Invited

    Food Web 2003 (Schloss, Germany) 2003

  289. Foraging adaptation and the complexity-stability relationship of food webs International-presentation Invited

    InterACT Workshop "Community viability analysis: Identifying fragile systems and keystone species" (Linkoping, Sweden) 2003

  290. How does evolution influence ecosystem-level properties? -A role of fluctuating selection in complex systems- International-presentation Invited

    Workshop in the LINKECOL program "Ecosystem evolution and Evolution in Ecosystems" (Ekens, Sweden) 2003

  291. Unifying the relationships of species richness to disturbance and productivity

    British Ecological Society Annual Meeting 2002

  292. Unifying the relationships of species richness to disturbance and productivity

    British Ecological Society Annual Meeting 2002

  293. Trait-mediated indirect effectはどのようにして生まれるか?~スケール, 異質性,「選択圧」~

    第49回日本生態学会 自由集会「思わぬところから間接効果(企画者 宮本泰、近藤倫生)」(仙台) 2002

  294. 生息地破壊によって植食性昆虫のアウトブレイクがもたらされる可能性の理論的考察

    第49回日本生態学会(仙台) 2002

  295. 植食者および天敵昆虫の補償行動 ~群集構造への影響~

    第48回日本生態学会(東京) 2001

  296. 生物多様性と撹乱、生産性との関係を統合する

    第48回日本生態学会 自由集会「生物多様性の生態学を推進する:「撹乱・生物相互作用-生物多様性-生態系機能」の統合的理解へ向けて.(企画者 近藤倫生)」(東京) 2001

  297. Parental investment and filial cannibalism in paternal species(奥田昇との共著)

    XXVI International Ethological Conference (Bagalore, India) 1999

  298. Parental investment and filial cannibalism in paternal species(奥田昇との共著)

    XXVI International Ethological Conference (Bagalore, India) 1999

  299. 父親はどれくらい子供を食べるべきか?フィリアルカニバリズム進化のモデル(奥田昇との共著)

    第46回日本生態学会(松本) 1999

  300. なぜ胚乳は三倍体なのか?遺伝的コンフリクトとその解消(東正彦との共著)

    第45回日本生態学会(京都) 1998

  301. 親子間コンフリクトとその解消(東正彦との共著)

    第44回日本生態学会(札幌) 1997

  302. Top-down control versus bottom-up control: a theoretical consideration(東正彦との共著)

    第43回日本生態学会(東京) 1996

Show all Show first 5

Research Projects 45

  1. ネイチャーポジティブ発展社会実現拠点

    Offer Organization: JST

    System: 共創の場形成支援プログラム COI-NEXT

    Institution: 東北大学

    2024/04 - 2034/03

  2. Holistic Genomic Approach to Asia-Pacific Marine Biodiversity

    Offer Organization: (公財)笹川平和財団海洋政策研究所

    System: オーシャンショット

    Institution: 東北大学

    2024/01 - 2027/03

  3. Support activities for establishing integrated biosphere science

    Offer Organization: Japan Society for the Promotion of Science

    System: Grants-in-Aid for Scientific Research Grant-in-Aid for Transformative Research Areas (A)

    Category: Grant-in-Aid for Transformative Research Areas (A)

    Institution: National Institute for Environmental Studies

    2021/09/10 - 2026/03/31

  4. 土壌微生物機能発揮の鍵となる群集・メタゲノム構造の特定

    近藤 倫生, 川津 一隆, 永田 裕二, 大坪 嘉行, 加藤 広海

    Offer Organization: 日本学術振興会

    System: 科学研究費助成事業 学術変革領域研究(A)

    Category: 学術変革領域研究(A)

    Institution: 東北大学

    2021/09/10 - 2026/03/31

  5. Establishing a revolutionary method for ecosystem monitoring by scooping a cup of water

    Offer Organization: Japan Society for the Promotion of Science

    System: Grants-in-Aid for Scientific Research Grant-in-Aid for Challenging Research (Exploratory)

    Category: Grant-in-Aid for Challenging Research (Exploratory)

    Institution: Japan Agency for Marine-Earth Science and Technology

    2022/06/30 - 2025/03/31

  6. Regime shifts in coastal marine ecosystems: an empirical approach based on advanced monitoring and nonlinear dynamical theory

    Offer Organization: Japan Society for the Promotion of Science

    System: Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (S)

    Category: Grant-in-Aid for Scientific Research (S)

    Institution: Tohoku University

    2019/06/26 - 2024/03/31

  7. ネイチャーポジティブ成長社会実現拠点 Competitive

    近藤倫生

    Offer Organization: 国立研究開発法人科学技術振興機構

    System: 共創の場形成支援プログラム

    Category: 共創分野「育成型」2022年度公募

    Institution: 東北大学

    2022/10 - 2024/03

  8. イチャーポジティブ経済実現に向けた国際ルールメイキングによる市場形成 と戦略立案による市場獲得のための横断・基盤プロジェクト

    Offer Organization: JST

    System: BRIDGE

    Institution: 東北大学

    2024 -

  9. ネイチャーポジティブな一次産業と流通・消費にかかる技術市場・ビジネスス キームの構築に向けた戦略検討

    Offer Organization: JST

    System: BRIDGE

    Institution: 東北大学

    2024 -

  10. 高度画像解析技術を用いたプランクトンモニタリング手法に基づく湖沼生態系監視技術の開発 Competitive

    占部城太郎, 辻彰洋, 伊藤康一, 近藤倫生

    Offer Organization: 環境再生保全機構

    System: 環境研究総合推進費

    Category: 環境問題対応型研究領域

    Institution: 東北大学

    2021 - 2023

  11. 強靭な生態-社会共生体を実現するためのテクノロジーに関する調査研究

    近藤 倫生

    Offer Organization: 科学技術振興機構

    System: 戦略的な研究開発の推進 ムーンショット型研究開発事業

    Institution: 東北大学

    2020 - 2021

    More details Close

    2050年の社会像として、当チームは「生態系の能力を最大限に引き出した強靭な生態-社会共生体」を提案します。本調査研究では、大規模生態系観測と生態系予測・ 制御・設計のモデリング技術によって実現できる新しい社会発展、生態系保全と持続的利用の促進戦略、求められる科学技術的ブレイクスルーを特定します。これによりテクノロジーによる生態-社会共生体実現に向けての具体的な道筋を明らかにすることを目指します。

  12. 琵琶湖の水環境への影響調査 Competitive

    一般財団法人, 日本気象協会

    Offer Organization: 環境省

    System: 平成30年度地域適応コンソーシアム近畿地域事業

    2018/04 - 2020/03

  13. Ecology of Adaptation Load: The Effect of Adaptation to Interspecific Competition to Multi-Species Coexistence Competitive

    Kondoh Michio

    Offer Organization: Japan Society for the Promotion of Science

    System: Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (B)

    Category: Grant-in-Aid for Scientific Research (B)

    2016/04/01 - 2019/03/31

    More details Close

    For better understanding of how evolution of traits related to interspecific interactions, such as sexual selection, mate competition, social or cooperative behavior, sexual reproduction, affected community dynamics and structure, we took three approaches based on review, theoretical and empirical research. Our theory suggests that adaptation driven by interspecific mate competition or sexual conflict may enhance multi-species coexistence by strengthening self-regulation intensities of populations or weakening interspecific competition. Indeed, some earlier reports can be viewed as special cases of our more general theory. Empirical studies using bean beetles or fish also gave evidence that traits linked to intraspecific relationship affect interspecific interactions and community dynamics,

  14. Development of multi-isotope tracer techniques for evaluating functions of coastal ecosystem Competitive

    Ichiro Tayasu

    Offer Organization: JST

    System: CREST

    2013/06 - 2019/03

  15. Application of environmental DNA for quantitative monitoring of fish community and ecosystem assessment Competitive

    KONDOH Michio

    Offer Organization: Japan Science and Technology Agency

    System: Strategic Basic Research Programs CREST

    2013/06 - 2019/03

  16. Reconstructing community networks based on time-series analysis of populations Competitive

    Kondoh Michio

    Offer Organization: Japan Society for the Promotion of Science

    System: Grants-in-Aid for Scientific Research Grant-in-Aid for Challenging Exploratory Research

    Category: Grant-in-Aid for Challenging Exploratory Research

    Institution: Ryukoku University

    2015/04/01 - 2018/03/31

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    We developed a mathematical method, by applying which to time-series data of populations one can estimate presence/absence, strengths and signs of interspecific interactions and evaluate community stability. We confirmed the usefulness of the developed method by applying it to artificial data and experimental data with a few species. The method has been applied to large field data sets, such as of fish community of Maizuru Bay and insect community of British grassland, to detect the dynamics and other characteristics of interaspecific interactions in nature and also to test empirically the complexity-stability effect, which has been predicted only with mathematical modeling.

  17. Non-invasive monitoring and biomass estimation of salmonid fish using environmental DNA

    ARAKI Hitoshi, KONDO Michio, DOI Hideyuki, SATO Shunpei

    Offer Organization: Japan Society for the Promotion of Science

    System: Grants-in-Aid for Scientific Research Grant-in-Aid for Challenging Exploratory Research

    Category: Grant-in-Aid for Challenging Exploratory Research

    Institution: Hokkaido University

    2014/04/01 - 2017/03/31

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    Monitoring and biomass estimation of wild organisms are of central importance in conservation biology. However, aquatic organisms are difficult to monitor because of their difficulties in catch and visual observations in the wild. In this study, we aimed to establish a new molecular method for monitoring and biomass estimation of salmonid species in the wild. We use environmental DNA, which is defined as DNA from environmental media (e.g., water for fish), in order to identify and estimate the amount of wild organisms nearby. Results from our rearing experiments, together with our trials in rivers and the ocean, suggest that environmental DNA we detected indeed reflects the presence/absence and spatio-temporal variation in salmonid species.

  18. Evolution and maintenance of cooperation in metapopulation: theoretical and experimental approaches

    Kadowaki Kohmei, KONDOH Michio, Mouquet Nicolas, Jousset Alexandre

    Offer Organization: Japan Society for the Promotion of Science

    System: Grants-in-Aid for Scientific Research Grant-in-Aid for Young Scientists (B)

    Category: Grant-in-Aid for Young Scientists (B)

    Institution: Kyoto University

    2014/04/01 - 2016/03/31

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    What allows cooperators to persist in a population has been a central question in evolutionary ecology, since a game theoretical argument predicts that a population of cooperator can be easily invaded by defectors and may be exploited and eventually become extinct. With collaborators I theoretically and experimentally tested a model that attributes the maintenance of cooperator to spatial structure; an intermediate rate of dispersal could allow cooperators to exploit open patches as temporal refuges where defector populations already collapsed, allowing for coexistence of cooperators and defectors in the whole system.

  19. Development of molecular level isotope techniques to analyze ecosystems

    Tayasu Ichiro, KONDOH Michio, OHKOUCHI Naohiko

    Offer Organization: Japan Society for the Promotion of Science

    System: Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (B)

    Category: Grant-in-Aid for Scientific Research (B)

    2013/04/01 - 2016/03/31

    More details Close

    In this study, we tested a possibility to use molecular level isotope techniques and other isotopes together with conventional isotopes, namely carbon and nitrogen isotope ratios. It had been shown that trophic position of an organism can be estimated using nitrogen isotope ratios of phenylalanine and glutamine in either terrestrial or aquatic ecosystem. However, the equation to estimate trophic position requires an assumption of either terrestrial or aquatic primary production. In this study, we revealed that the method is also available to an organism in riverine systems, applying a mixing model using nitrogen isotope ratios of phenylalanine and glutamine. We showed the utility to use sulfur isotope ratios in separating terrestrial and marine derived materials, oxygen isotope ratios of organic matter in estimating the origin of the materials in relation to water cycling, and carbon-14 concentrations in estimating carbon source.

  20. Host range evolution of parasites on infection networks: mathematical modelling with applications to Wolbachia and Koi herpes virus Competitive

    Arndt Telschow, Michio Kondoh

    Offer Organization: DFG (German Research Fundation)

    2015/01 - 2015/12

  21. Competitive

    KONDOH Michio

    Offer Organization: Institute for Evolution and Biodiversity, University of Muenster

    System: Muenster Graduate School of Evolution (MGSE) Fellow

    2014/12 - 2015/03

  22. Chih-hao Hsieh (National Taiwan University)招へい Competitive

    KONDOH Michio

    2014/06 - 2014/08

  23. Innovative environmental DNA technique for community ecology Competitive

    KONDOH Michio, MINAMOTO Toshihumi, MARUYAMA Atsushi, YAMANAKA Hiroki

    Offer Organization: Japan Society for the Promotion of Science

    System: Grants-in-Aid for Scientific Research Grant-in-Aid for Challenging Exploratory Research

    Category: Grant-in-Aid for Challenging Exploratory Research

    Institution: Ryukoku University

    2012/04/01 - 2014/03/31

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    We have developed the molecular and theoretical techniques to establish eDNA-based fish community monitoring. The major achievements are as follows: (i) A molecular biological methodology established to detect and quantify eDNA of seven fish species of the Lake Biwa-Yodo River System; (ii) DNA release and decomposition rates of fish individual, the basic parameters, and their condition dependence experimentally determined for particular species; (iii) Field and laboratory experiments conducted to test the methods developed for eDNA-based monitoring of bluegill and Japanese giant salamander; (iv) Novel methodologies established to capture and concentrate eDNA in water samples; (v) Multispecies detection technique based on multiplex PCR studied; (vi) Novel theoretical hypotheses obtained as to community network structure and its community dynamics consequences.

  24. 生物多様性の機能評価のための安定同位体指標に関する研究(4D-1102) Competitive

    陀安 一郎

    Offer Organization: 環境省

    System: 地球環境研究総合推進費

    2011/04 - 2014/03

  25. What maintains the ecological communities ? a complex food web approach Competitive

    KONDOH Michio, YAMANAKA Hiroki, MARUYAMA Atsushi

    Offer Organization: Japan Society for the Promotion of Science

    System: Grants-in-Aid for Scientific Research

    Category: Grant-in-Aid for Scientific Research (B)

    Institution: Ryukoku University

    2010/04 - 2013/03

    More details Close

    A qualitative food web of fish community in Lake Biwa ecosystem was estimated through gut-contents analysis. The basic parameters necessary to construct a qualitative food web, such as metabolic rates and biomass, were also estimated via experiments and statistical analyses of fishery data. The relative contribution of coastal and pelagic production to fish species was also evaluated by applying MCMC method to the dataset on stable isotope ratio. In addition we showed that the biodiversity and complexity of interaction networks can play an essential role in maintaining ecological community and ecosystem functioning in terms of theoretical modeling.

  26. 栄養モジュール間相互作用に着目した食物網維持機構の解明 Competitive

    近藤 倫生

    Offer Organization: 日本科学技術振興機構

    System: JST戦略的創造研究推進制度(個人研究推進事業:さきがけ研究21‐PRESTO)

    2008/09 - 2013/03

  27. Scaling-up effects of intra-specific phenotypic polymorphism on lake ecosystems : experimental approaches Competitive

    OKUDA Noboru, TAYASU Ichiro, YOSHIDA Takehito, KOKITA Tomoyuki, KONDOH Michio, NAGATA Toshi

    Offer Organization: Japan Society for the Promotion of Science

    System: Grants-in-Aid for Scientific Research

    Category: Grant-in-Aid for Scientific Research (B)

    Institution: Kyoto University

    2008/04 - 2012/03

    More details Close

    We tested how phenotypic plasticity or polymorphism of algae and fish, which are regarded as primary producers and top-predators in lake ecosystems, respectively, can affect food web and ecosystem properties, using microcosm and mesocosm experimental systems. Taking the advantage of molecular technique, such as transcriptome and QTL analyses, we elucidated that fish trophic polymorphism(planktivory-benthivory species pair) is under the control of polygenic variation in a large number of loci with small additive effects and found that the expression pattern of swimming performance-related genes is shared among different phylogenies with species pair, suggesting the possibility of convergent evolution of adaptation to pelagic environments. We also experimentally demonstrated that fish trophic polymorphism altered not only food web properties, such as food chain length, prey-predator mass ratio and community-average trophic level, but also community respiration as ecosystem functioning through trophic cascading effects. Using theoretical models, we finally corroborated that the evolution of phenotypically plastic or polymorphic traits have ecosystem consequences in terms of food web configuration and stability.

  28. A synthesis of metabolic theory of ecology: Toward an integration of allometric scaling and ecological stoichiometry

    OKUDA Noboru, KONDOH Michio

    Offer Organization: Japan Society for the Promotion of Science

    System: Grants-in-Aid for Scientific Research Grant-in-Aid for Challenging Exploratory Research

    Category: Grant-in-Aid for Challenging Exploratory Research

    Institution: Kyoto University

    2011 - 2012

    More details Close

    The rate of metabolism which is a fundamental biochemical reaction shared among all organisms scales with the power function of their body mass. Focusing on this size-scaling law, we aimed at constructing a conceptual framework of “ecosystem metabolism” to formulate a relationship between size structure and ecosystem-level metabolism of biological communities. We examined what determines the ecosystem metabolism of plankton communities in resource-controlled lake mesocosms. Our experimental results did not support the prediction deduced from the size-scaling law in that mass-specific ecosystem metabolism would be higher in communities with smaller-sized plankton. Instead, wefound that plankton stoichiometry (i.e., C:N:P) was the most influential factor for the ecosystem metabolism. We suggest that the availability of least nutrients can limit the rate of transferring metabolites to all member of community under trophic interactions, consequently regulating the metabolic rate of whole community. To understand controlling mechanisms for ecosystem metabolism, we emphasize the importance of synthetic model in which ecological stoichiometry as well as allometric scaling is integrated into the metabolic theory.

  29. What maintains the ecological communities ? a complex food web approach

    KONDOH Michio, YAMANAKA Hiroki, MARUYAMA Atsushi

    Offer Organization: Japan Society for the Promotion of Science

    System: Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (B)

    Category: Grant-in-Aid for Scientific Research (B)

    Institution: Ryukoku University

    2010 - 2012

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    A qualitative food web of fish community in Lake Biwa ecosystem was estimated through gut-contents analysis. The basic parameters necessary to construct a qualitative food web, such as metabolic rates and biomass, were also estimated via experiments and statistical analyses of fishery data. The relative contribution of coastal and pelagic production to fish species was also evaluated by applying MCMC method to the dataset on stable isotope ratio. In addition we showed that the biodiversity and complexity of interaction networks can play an essential role in maintaining ecological community and ecosystem functioning in terms of theoretical modeling.

  30. Complex-food-web approach to the maintenance mechanisms of biological community Competitive

    System: Grant-in-Aid for Scientific Research

    2010 - 2012

  31. 人間活動下の生態系ネットワークの崩壊と再生 Competitive

    山村 則男

    Offer Organization: 地球環境学研究所

    2008 - 2012

  32. Trophic-module approach to the maintenance mechanism of food web Competitive

    System: JST Basic Research Programs (Precursory Research for Embryonic Science and Technology :PRESTO)

    2008 - 2012

  33. The adaptive evolution of contrasting leaf phenology among Daphne species and its implications on species' current invasive-extinction risks Competitive

    THOMAS・TING Lei

    Offer Organization: JSPS

    System: Grant-in-Aid for Scientific Research (B)

    Category: Grant-in-Aid for Scientific Research (B)

    Institution: Ryukoku University

    2008/04 - 2011/03

    More details Close

    The diverse leaf phenology in Daphne (from summer deciduous to winter deciduous to evergreen) allows each species to survive in their respective habitats but the evolution of the contrasting leaf phonologies can be traced to ecophysiological constraints present in their phylogeny. The resulting phenological expression appears to be partly responsible for the invasive success of some evergreen species (D. laureola) and the vulnerability of other winter deciduous species (D. pseudomezereum var.koreana)

  34. Scaling-up effects of intra-specific phenotypic polymorphism on lake ecosystems : experimental approaches

    OKUDA Noboru, TAYASU Ichiro, YOSHIDA Takehito, KOKITA Tomoyuki, KONDOH Michio, NAGATA Toshi

    Offer Organization: Japan Society for the Promotion of Science

    System: Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (B)

    Category: Grant-in-Aid for Scientific Research (B)

    Institution: Kyoto University

    2008 - 2011

    More details Close

    We tested how phenotypic plasticity or polymorphism of algae and fish, which are regarded as primary producers and top-predators in lake ecosystems, respectively, can affect food web and ecosystem properties, using microcosm and mesocosm experimental systems. Taking the advantage of molecular technique, such as transcriptome and QTL analyses, we elucidated that fish trophic polymorphism(planktivory-benthivory species pair) is under the control of polygenic variation in a large number of loci with small additive effects and found that the expression pattern of swimming performance-related genes is shared among different phylogenies with species pair, suggesting the possibility of convergent evolution of adaptation to pelagic environments. We also experimentally demonstrated that fish trophic polymorphism altered not only food web properties, such as food chain length, prey-predator mass ratio and community-average trophic level, but also community respiration as ecosystem functioning through trophic cascading effects. Using theoretical models, we finally corroborated that the evolution of phenotypically plastic or polymorphic traits have ecosystem consequences in terms of food web configuration and stability.

  35. Adaptation-oriented view to food-web structure Competitive

    KONDOH Michio

    Offer Organization: JSPS

    System: Grant-in-Aid for Young Scientists (B)

    Category: Grant-in-Aid for Young Scientists (B)

    Institution: Ryukoku University

    2007/04 - 2010/03

    More details Close

    Combining theoretical modeling and empirical approaches, I have explored the properties of food web structure and population dynamics emerging from adaptation, an essential characteristic of living organisms. The major results are (i) that an adaptive diet choice and anti-predator defense alter the complexity-stability relationship of food web ; (ii) that food-chain length and its response to environmental variables in natural ecosystems may be explained as an emergent property of interacting adaptive foragers ; (iii) that food webs are built up with nested trophic modules, which optimal diet choice may give rise to ; (iv) prey-predator pairs in natural ecosystems are related to their relative brain sizes ; (v) that the complex food web of Caribbean ecosystem can be viewed as a set of interacting simple modules, nonrandomly arranged to enhance the maintenance of biodiversity.

  36. 種内表現型多型のスケールアップ効果:湖沼生態系に与える影響の実験的検証 Competitive

    OKUDA Noboru, TAYASU Ichiro, YOSHIDA Takehito, KOKITA Tomoyuki, KONDOH Michio, NAGATA Toshi

    Offer Organization: Japan Society for the Promotion of Science

    System: Grant-in-Aid for Scientific Research

    Category: Grant-in-Aid for Scientific Research (B)

    Institution: Kyoto University

    2008 - 2010

    More details Close

    We tested how phenotypic plasticity or polymorphism of algae and fish, which are regarded as primary producers and top-predators in lake ecosystems, respectively, can affect food web and ecosystem properties, using microcosm and mesocosm experimental systems. Taking the advantage of molecular technique, such as transcriptome and QTL analyses, we elucidated that fish trophic polymorphism(planktivory-benthivory species pair) is under the control of polygenic variation in a large number of loci with small additive effects and found that the expression pattern of swimming performance-related genes is shared among different phylogenies with species pair, suggesting the possibility of convergent evolution of adaptation to pelagic environments. We also experimentally demonstrated that fish trophic polymorphism altered not only food web properties, such as food chain length, prey-predator mass ratio and community-average trophic level, but also community respiration as ecosystem functioning through trophic cascading effects. Using theoretical models, we finally corroborated that the evolution of phenotypically plastic or polymorphic traits have ecosystem consequences in terms of food web configuration and stability.

  37. The adaptive evolution of contrasting leaf phenology among Daphne species and its implications on species' current invasive-extinction risks Competitive

    THOMAS・TING Lei, MIYAURA Tomiyasu, KONDOH Michio, KAWAHARA Takayuki, YAMASHITA Naoko

    Offer Organization: Japan Society for the Promotion of Science

    System: Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (B)

    Category: Grant-in-Aid for Scientific Research (B)

    Institution: Ryukoku University

    2008 - 2010

    More details Close

    The diverse leaf phenology in Daphne (from summer deciduous to winter deciduous to evergreen) allows each species to survive in their respective habitats but the evolution of the contrasting leaf phonologies can be traced to ecophysiological constraints present in their phylogeny. The resulting phenological expression appears to be partly responsible for the invasive success of some evergreen species (D. laureola) and the vulnerability of other winter deciduous species (D. pseudomezereum var.koreana)

  38. Adaptation-oriented view to food-web structure

    KONDOH Michio

    Offer Organization: Japan Society for the Promotion of Science

    System: Grants-in-Aid for Scientific Research Grant-in-Aid for Young Scientists (B)

    Category: Grant-in-Aid for Young Scientists (B)

    Institution: Ryukoku University

    2007 - 2009

    More details Close

    Combining theoretical modeling and empirical approaches, I have explored the properties of food web structure and population dynamics emerging from adaptation, an essential characteristic of living organisms. The major results are (i) that an adaptive diet choice and anti-predator defense alter the complexity-stability relationship of food web ; (ii) that food-chain length and its response to environmental variables in natural ecosystems may be explained as an emergent property of interacting adaptive foragers ; (iii) that food webs are built up with nested trophic modules, which optimal diet choice may give rise to ; (iv) prey-predator pairs in natural ecosystems are related to their relative brain sizes ; (v) that the complex food web of Caribbean ecosystem can be viewed as a set of interacting simple modules, nonrandomly arranged to enhance the maintenance of biodiversity.

  39. Adaptation-oriented explanation for the food-web strcture Competitive

    System: Grant-in-Aid for Scientific Research

    2007 - 2009

  40. 在来・外来種間の遭遇経験の欠如と獲得が生物学的侵入において果たす役割に関する理論 Competitive

    近藤 倫生

    Offer Organization: 日本学術振興会

    System: 科学研究費補助金, 若手研究(B)

    Category: 若手研究(B)

    Institution: 龍谷大学

    2005/04 - 2007/03

    More details Close

    外来種と在来種を隔てる本質的な生物学的違いは、遭遇経験に基づく適応の程度にある。在来種と外来種の間では、在来種同士と比較して、共存期間の短さのため、互いに適応的に反応することがより困難になると想像される。これまで、研究代表者は捕食者の適応的捕食に着目し、それが生物群集の構造や個体群動態に及ぼす影響について研究を進めてきたが、本年度は、このアイデアをさらに拡張し、被食者の対捕食者防御というまったく別の適応的行動が、群集構造や個体群動態に及ぼす影響について研究を進め、学術雑誌に成果を発表した。さらに、外来種が新しい生息地に侵入後、爆発的増加をみせ、やがて沈静化する現象(boom-and-bust現象)の生じるメカニズムの解明をめざし、数理モデルを構築し、適応に基づく理論的説明を試みた。 本研究の具体的成果とその公表実績は以下のように要約される: (1)適応的対捕食者防御行動が食物網の安定性につよく影響する可能性を理論的に示した。(学術雑誌にて受理済) (2)捕食者と被食者との間の適応ミスマッチが外来種のboom-and-bust現象を起こす可能性を示唆した。(書籍の1章[分筆]として発表) (3)食物網構造が、捕食者の適応的餌選択行動の結果として理解できることを理論的に示した。(第54回日本生態学会において2題の口頭発表) (4)適応的捕食者が食物網の「複雑性一安定性」関係を正に逆転させるとした前の研究を個体ベースモデルによって再試験し、そのメカニズムの限界を明らかにした。(第54回日本生態学会において1題のポスター発表) これらの研究を通じて、遭遇経験の欠如という外来種の特徴の群集レベルでの影響を理論的に予測・評価することができた。これは適応を考慮に入れた群集生態研究ならではの重要な成果だと考える。

  41. 在来・外来種間の遭遇経験の欠如と獲得が生物学的侵入において果たす役割に関する理論

    近藤 倫生

    Offer Organization: 日本学術振興会

    System: 科学研究費助成事業 若手研究(B)

    Category: 若手研究(B)

    Institution: 龍谷大学

    2005 - 2006

    More details Close

    外来種と在来種を隔てる本質的な生物学的違いは、遭遇経験に基づく適応の程度にある。在来種と外来種の間では、在来種同士と比較して、共存期間の短さのため、互いに適応的に反応することがより困難になると想像される。これまで、研究代表者は捕食者の適応的捕食に着目し、それが生物群集の構造や個体群動態に及ぼす影響について研究を進めてきたが、本年度は、このアイデアをさらに拡張し、被食者の対捕食者防御というまったく別の適応的行動が、群集構造や個体群動態に及ぼす影響について研究を進め、学術雑誌に成果を発表した。さらに、外来種が新しい生息地に侵入後、爆発的増加をみせ、やがて沈静化する現象(boom-and-bust現象)の生じるメカニズムの解明をめざし、数理モデルを構築し、適応に基づく理論的説明を試みた。 本研究の具体的成果とその公表実績は以下のように要約される: (1)適応的対捕食者防御行動が食物網の安定性につよく影響する可能性を理論的に示した。(学術雑誌にて受理済) (2)捕食者と被食者との間の適応ミスマッチが外来種のboom-and-bust現象を起こす可能性を示唆した。(書籍の1章[分筆]として発表) (3)食物網構造が、捕食者の適応的餌選択行動の結果として理解できることを理論的に示した。(第54回日本生態学会において2題の口頭発表) (4)適応的捕食者が食物網の「複雑性一安定性」関係を正に逆転させるとした前の研究を個体ベースモデルによって再試験し、そのメカニズムの限界を明らかにした。(第54回日本生態学会において1題のポスター発表) これらの研究を通じて、遭遇経験の欠如という外来種の特徴の群集レベルでの影響を理論的に予測・評価することができた。これは適応を考慮に入れた群集生態研究ならではの重要な成果だと考える。

  42. Theory on the role of alien-residence contact experience in biological invasion. Competitive

    System: Grant-in-Aid for Scientific Research

    2005 - 2006

  43. Theoretical study on key factor for success in biological invasion and effects of biological invasion on local community Competitive

    System: The Other Research Programs

    2004 - 2004

  44. 生態系の物質リサイクル系における生物多様性の役割と創出・維持機構

    近藤 倫生

    Offer Organization: 日本学術振興会

    System: 科学研究費助成事業 特別研究員奨励費

    Category: 特別研究員奨励費

    Institution: 京都大学

    2001 - 2003

    More details Close

    私は前年度「柔軟な食物網仮説」を提出した。本仮説は以下のように要約される。生物が環境に応じて餌を変化させる柔軟性がない場合には生態系の複雑性が増すに従って種構成は維持されにくくなるが、ある場合には複雑な系がされやすくなる「生物多様性の自己安定化作用」を意味する。 本年度は、この「柔軟な食物網」仮説を発展・深化させることを主眼においた。今年度の主な研究実績は以下の通りである。 1)Science誌上にて「柔軟な食物網」仮説に関する論争をおこなった。具体的には、「柔軟な食物網」仮説の成立する条件がどれほど現実的であるのかを議論した。数理モデルを用いた解析から「柔軟な食物網」仮説はきわめて多様な条件下で成立する事が示された。これは、この仮説が現実の生態系でもじゅうぶんに働きうる事を示している。この結果はScience誌上にて学術論文として発表した。 2)「柔軟な食物網」仮説を群集生態学のより一般的で新しいアイデアに深化させた。その結果は現在執筆中の3つの書籍のチャプター(「Food Web」Academic Press、「Aquatic Food Webs : An Ecosystem Approach」Oxford University Press,「Conceptual Ecology and Invasions Biology : Reciprocal Approaches to Nature」Kluwer Academic Press)として発表される予定である。 なお、これらの研究の一部は形骸の研究機関において遂行された。機関名、期間は以下の通り: カーディフ大学(英国、ウェールズ)平成15年5月〜10月 オランダ生態学研究所・陸水学研究所(オランダ)平成15年10月〜平成16年1月

  45. Maintenance and emergence of biodiversity in ecosystems as natural recycling system Competitive

    System: Grant-in-Aid for Scientific Research

    2001 - 2003

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Teaching Experience 27

  1. 生命科学C 東北大学

  2. 動物生態学実習 東北大学理学部

  3. 生物学演習1 東北大学理学部

  4. 生物学へのアプローチ 東北大学理学部

  5. 先端生態発生適応科学特論 東北大学大学院生命科学研究科

  6. 生態学 東北大学理学部

  7. 理論生態学 東北大学理学部

  8. 生態発生適応科学概論 東北大学大学院生命科学研究科

  9. 生態と進化 東北大学理学部

  10. 生命科学B 東北大学

  11. 環境ソリューション工学概論 龍谷大学理工学部

  12. 生物圏科学特別講義 I 北海道大学大学院地球環境科学研究院

  13. 環境生態学実習 龍谷大学理工学部

  14. 科学技術英語 龍谷大学理工学部

  15. 進化学/進化生態学 龍谷大学理工学部

  16. 特別研究 龍谷大学理工学部, 龍谷大学理工学研究科

  17. セミナー 龍谷大学理工学部, 龍谷大学理工学研究科

  18. 理論生態学特論B 龍谷大学理工学研究科

  19. 理論生態学特論A 龍谷大学理工学研究科

  20. 数理生態学/環境モデリング及び演習 龍谷大学理工学部

  21. 資源管理学/生物資源管理学 龍谷大学理工学部

  22. 情報科学特別セミナー 奈良女子大学

  23. 広域システム科学特殊講義II 東京大学

  24. 生物多様性実習 龍谷大学理工学部

  25. プレゼンテーション演習II 龍谷大学理工学部

  26. 生態学演習 龍谷大学理工学部

  27. 計算機基礎実習II 龍谷大学理工学部

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Works 3

  1. Joint Research on Herbivore-Natural-Enemy Systems

    2000 -

  2. Joint Research on mate-locating Behavior of Insects

    2000 -

  3. Joint Research on Evolution of Genomic Imprinting

    1999 -