TOHOKU UNIVERSITY Researchers

Details of the Researcher

Home

日本語 English

Munehiro Nomura

Section

Graduate School of Engineering

Job title

Assistant Professor

Degree

Doctor of Engineering (Tohoku University)

researchmap

https://researchmap.jp/read0211531

J-GLOBAL ID

200901097174848248

Committee Memberships 5

日本水環境学会東北支部　幹事

2015/05 - Present
日本水環境学会東北支部　幹事長

2019/05 - 2021/05
日本水環境学会「水環境学会誌」編集査読部会　委員

2008/08 - 2009/08
内閣府沖縄総合事務所　沖縄における自然再生方策検討調査委員会委員

2003/09 - 2004/03
日本水環境学会　自然を活用した水環境改善実証事業評価検討委員会幹事

2002/09 - 2004/03

Professional Memberships 4

Japanese Society of Water Treatment Biology
Coastal Oceanography Research Committee, The Oceanographic Society of Japan
Japan Society on Water Environment
Japan Society of Civil Engineers

Research Interests 4

water purification
seagrass
tidal flat
eutrophication

Research Areas 1

Social infrastructure (civil Engineering, architecture, disaster prevention) / Civil engineering (environmental systems) /

Awards 5

日本水処理生物学会第27回論文賞

2024/11　Japanese Society of Water Treatment Biology　Effect of Silicon Concentration in Water Environment on Growth of Diatom and its Fatty Acid Production
日本水処理生物学会第20回論文賞

2017/11　Japanese Society of Water Treatment Biology　Effects of coagulation on filtration treatment for picophytoplankton removal
日本水処理生物学会第15回論文賞

2012/11/25　日本水処理生物学会　Start-up Water Purification Performance of Multi-stage Vertical Flow Constructed Wetland Treating Milking Parlor Wastewater and Paddock Run-off
平成19年度土木学会東北支部技術研究発表会技術開発賞

2008/05/15　土木学会東北支部　宮城県内の河川における薬剤耐性菌分布の実態
平成18年度建設工学研究奨励賞

2007/05　建設工学研究振興会　海草コアマモ場造成のための環境評価手法の開発

Papers 126

Role of Seagrass as a Food Source for Benthos in Tidal Flats: Toward Conservation and Restoration of Resilient Ecosystems

Yumi Nagahama, Munehiro Nomura, Osamu Nishimura

Animals　15　(8)　1098-1098　2025/04/10
Publisher: MDPI AG
DOI： 10.3390/ani15081098 　

eISSN： 2076-2615

More details Close

Seagrass is a key primary producer in coastal ecosystems; however, most studies on seagrass-benthos interactions have focused on subtidal zones. Some species such as Zostera japonica grow in intertidal flats; however, their ecological functions remain unclear. Understanding whether intertidal seagrass beds contribute to benthic abundance and diversity can provide insights that facilitate tidal flat conservation. The present study clarifies the role of intertidal Z. japonica as a food source for benthos. Field surveys were conducted in an intertidal flat in Matsushima Bay, Japan. Five benthic species (Batillaria cumingii, Umbonium costatum, Phacosoma japonicum, Nereididae, and Paguroidea) were identified. Carbon and nitrogen stable isotope ratios (δ13C, δ15N) and fatty acid compositions of sediment organic matter, seawater, and target benthos were analyzed to determine food sources. The results showed that B. cumingii actively consumed Z. japonica-derived organic matter present in both seagrass and sandy sediments. Z. japonica also influenced bacterial community structure, providing a favorable habitat for Nereididae. Filter feeders (U. costatum and P. japonicum) exhibited minimal reliance on Z. japonica-derived organic matter. The findings suggest that, similar to subtidal seagrass ecosystems, intertidal seagrass meadows support benthic communities by supplying organic matter and enhancing bacterial production.
Effect of Silicon Concentration in Water Environment on Growth of Diatom and its Fatty Acid Production Peer-reviewed

Y.Osada, R.Owada, N.Tanaka, M.Nomura, T.Sakamaki, C.Maruo, O.Nishimura

Jpn. Jour. Water Treat. Biol.　59　(4)　49-57　2023/12
Hydrodynamic-Driven Changes in the Source and Composition of Sedimentary Organic Matter via Grain Size Distribution in Shallow Lakes Peer-reviewed

Xiaoguang Xu, Ruijie Shi, Chengxu Lv, Huazu Liu, Wei Yang, Shenhua Qian, Megumu Fujibayashi, Yue Zhi, Guoxiang Wang, Munehiro Nomura, Osamu Nishimura, Wei Li

Journal of Geophysical Research: Biogeosciences　126　(11)　2021/11

DOI： 10.1029/2021JG006502 　

ISSN： 2169-8953

eISSN： 2169-8961
The Trend of Regeneration of Eelgrass Beds Damaged by the Tsunami Peer-reviewed

櫻井陽平, 野村宗弘, 大谷考一, 佐々木久雄, 西村修

用水と廃水　63　(3)　205-212　2021/03

ISSN： 0513-5907
沈降したアオコMicrocystisの分解特性と底生動物による利用可能性 Peer-reviewed

長濱祐美, 丸尾知佳子, 福島武彦, 野村宗弘, 西村修

環境工学研究論文集　57　III_361-III_366　2020/12
Effect of Dissolved Oxygen Concentration on Microfauna in Activated Sludge Peer-reviewed

Y.Shirakawa, M.Nomura, N.Takahashi, N.Tanaka, O.Nishimura

Jpn. Jour. Water Treat. Biol.　55　(2)　23-34　2019/06
Estimation on Degradability of Organic Matter derived from Aquatic Plant Litter Peer-reviewed

M.Nomura, T.Chiba, O.Nishimura

Journal of Water and Waste　61　(6)　409-415　2019/06
Approach deliberation for source identification of sedimentary organic matters via comparing freshwater lakes with multi-ecotypes Peer-reviewed

Xu Xiaoguang, Li Wei, Deng Hui, Fujibayashi Megumu, Nomura Munehiro, Nishimura Osamu, Wang Guoxiang

SCIENCE OF THE TOTAL ENVIRONMENT　649　327-334　2019/02/01

DOI： 10.1016/j.scitotenv.2018.08.236 　

ISSN： 0048-9697

eISSN： 1879-1026
Cyanobacterial carbon transfer to higher trophic level in eutrophic lake Taihu Peer-reviewed

CAO Xian, FUJIBAYASHI Megumu, NISHIMURA Osamu, SAKAMAKI Takashi, NOMURA Munehiro

Proceeding of 17th World Lake Conference　333-335　2018/10
Analysis on sedimentary mechanism of organic matter in the coastal area of Lake Izunuma Peer-reviewed

NOMURA Munehiro, FUJIMAKI Fumiya, NISHIMURA Osamu

第17回世界湖沼会議論文集　377-379　2018/10
Effect of Steel Slag to Improve Soil Quality of Tsunami-Impacted Land while Reducing the Risk of Heavy Metal Bioaccumulation Peer-reviewed

Marco Antonio León-Romero, Paula Cecilia Soto-Ríos, Munehiro Nomura, Osamu Nishimura

Water, Air, and Soil Pollution　229　(1)　12　2018/01/01
Publisher: Springer International Publishing
DOI： 10.1007/s11270-017-3666-0 　

ISSN： 1573-2932 0049-6979

eISSN： 1573-2932
Evaluation of Residual Ratio of Particulate Organic Matter by Long-Term Decomposition Experiment of Nelumbo nucifera and Deposition Tendency to Sediment Peer-reviewed

M.Nomura, T.Chiba, M.Fujibayashi, O.Nishimura

Environmental Engineering Research, JSCE　54　III_241-III_246　2017/11/17
Comparsion for Removal of Coliform Group between BOD Removal Type Johkasou and Nitrogen Removal Type Johkasou Peer-reviewed

N.Takahashi, A.Sasaki, Y.Shirakawa, M.Nomura, O.Nishimura

Jpn. Jour. Water Treat. Biol.　53　(1)　1-10　2017/03/15
Publisher:
DOI： 10.2521/jswtb.53.1 　

ISSN： 0910-6758
The Synthesis of Essential Fatty Acids by Protozoa Cyclidium and Glaucoma Peer-reviewed

M.Fujibayashi, S.Hashido, N.Tanaka, M.Nomura, O.Nishimura

Environmental Engineering Research, JSCE　53　III_567-III_572　2016/12

DOI： 10.2208/jscejer.72.III_567 　
Effects of coagulation on filtration treatment for picophytoplankton removal Peer-reviewed

M.Nomura, H.Anzai, M.Akiba, O.Nishimura

Jpn. Jour. Water Treat. Biol.　52　(3)　65-71　2016/09/15
Publisher:
DOI： 10.2521/jswtb.52.65 　

ISSN： 0910-6758
Interactions between biogeochemical environment and suspended oyster farming in Shizugawa Bay, Japan Peer-reviewed

Y.Zheng, K.Hayashi, T.Matsuno, M.Fujibayashi, M.Nomura, O.Nishimura, T.Sakamaki

Abstract Book of EMECS'11 - SeaCoasts XXVI Joint conference　80　2016
Influence of Anabaena Akinete on Algal Bloom Peer-reviewed

M.Nomura, M.Tsuchida, O.Nishimura

Journal of Water and Waste　57　(12)　891-898　2015/12/01
Publisher:
ISSN： 0513-5907
Effect of Particle Size of Steel Slag Used for Seaweed bed Material on the Growth of Zostera japonica Peer-reviewed

K.Saito, M.Nomura, O.Nishimura

Environmental Engineering Research　52　215-220　2015/11/27

DOI： 10.2208/jscejer.71.III_215 　
Asymmetric response of sedimentary pool to surface water in organics from a shallow hypereutrophic lake: The role of animal consumption and microbial utilization Peer-reviewed

Xiaoguang Xu, Wei Li, Megumu Fujibayashi, Munehiro Nomura, Osamu Nishimura, Xianning Li

ECOLOGICAL INDICATORS　58　346-355　2015/11

DOI： 10.1016/j.ecolind.2015.06.009 　

ISSN： 1470-160X

eISSN： 1872-7034
Predominance of terrestrial organic matter in sediments from a cyanobacteria- blooming hypereutrophic lake Peer-reviewed

Xiaoguang Xu, Wei Li, Megumu Fujibayashi, Munehiro Nomura, Osamu Nishimura, Xianning Li

ECOLOGICAL INDICATORS　50　35-43　2015/03

DOI： 10.1016/j.ecolind.2014.10.020 　

ISSN： 1470-160X

eISSN： 1872-7034
Feedback of threshold via estimating sources and composition of sedimentary organic matter across trophic gradients in freshwater lakes Peer-reviewed

Xiaoguang Xu, Wei Li, Megumu Fujibayashi, Munehiro Nomura, Takashi Sakamaki, Osamu Nishimura, Xianning Li

SCIENCE OF THE TOTAL ENVIRONMENT　500　373-382　2014/12

DOI： 10.1016/j.scitotenv.2014.08.113 　

ISSN： 0048-9697

eISSN： 1879-1026
The Effects of Global Warming on Photosynthesis of Seagrass: Change of Water Temperature and Sea Level Peer-reviewed

Y.Nagahama, Y.Ikegami, M.Nomura, O.Nishimura

Environmental Engineering Research, JSCE　50　(7)　III_473-III_479　2013/11
Publisher: Japan Society of Civil Engineers
DOI： 10.2208/jscejer.69.III_473 　

ISSN： 2185-6648

More details Close

Seagrasses contribute greatly to the biodiversity of coastal areas. However, there have been big influence of global warming that may affect on marine organisms, especially the seagrasses. In this study, we focused on Zostera japonica which inhabits in intertidal and shallow subtidal zones, there is almost no information on the impact of global warming on this seagrass. We measured and modeled that the photosynthsis and respiration rates in Z. japonica and Zostera marina on the various water temperature and photon flux density. Moreover, we investigated by using this model and the IPCC A1B scenario the effect of global warming on seagrasse. At the result, It was estimated Z. japonica will be strongly influenced by the sea level rise than the water temperature increase in the future.
Analysis of Sedimentary Organic Carbon Dynamics in Lake Izunuma using by Current Flow and Fatty Acid Biomarker Peer-reviewed

M.Fujibayashi, M.Nomura, R.Sato, X.G.Xu, Y.Aikawa, O.Nishimura

Environmental Engineering Research, JSCE　50　(7)　III_565-III_570　2013/11
Publisher: Japan Society of Civil Engineers
DOI： 10.2208/jscejer.69.III_565 　

ISSN： 2185-6648

More details Close

Eutrophication in closed water areas have been one of the most serious environmental concerns in all over the world. Not only water quality but also bottom sediment quality should be improved against for eutrophication. We investigated current flow, sedimentary organic carbon and fatty acid composition of bottom sediments in Lake Izunuma which is one of the most famous closed water lakes as eutrophic lake in Japan. There was negative relationship between exceedance probability of current velocity and sedimentary organic matter. Fatty acid analysis revealed the origin of organic carbon in bottom sediment was mainly higher plants. These results indicated the control of current flow and higher plants are required to manage closed water area.
Mass Formation and Collection Methods, and Evaluation of Its Germination of Anabaena Resting Cells Peer-reviewed

Y.Yajima, M.Nomura, S.Ichise, A.Suzuki, O.Nishimura

Jpn. Jour. Water Treat. Biol.　49　(3)　103-108　2013/09
Publisher:
DOI： 10.2521/jswtb.49.103 　

ISSN： 0910-6758
Biodegradation characteristics of organic matter derived from the aquatic plant Nelumbo nucifera by laboratory experiment Peer-reviewed

T.Chiba, M.Nomura, M.Fujibayashi, C.Maruo, O.Nishimura

Program of 32nd Congress of the International Society of Limnology　2013/08
Research on the geosmin content in akinetes of the cyanobacteria, Anabaena macrospora Peer-reviewed

A.Suzuki, M.Nomura, Y.Yajima, S.Ichise, O.Nishimura

Program of 32nd Congress of the International Society of Limnology　2013/08
Influence of velocity gradient and rapid mixing time on flocs formed by polysilica iron (PSI) and polyaluminum chloride (PACl) Peer-reviewed

Tugrul Selami Aktas, Megumu Fujibayashi, Chikako Maruo, Munehiro Nomura, Osamu Nishimura

DESALINATION AND WATER TREATMENT　51　(22-24)　4729-4735　2013/06

DOI： 10.1080/19443994.2012.751883 　

ISSN： 1944-3994
Effects of Coexisting Anions on Adsorption of Perfluorooctane Sulfonates in Road Runoff Peer-reviewed

K.Shigeizumi, C.Maruo, M.Nomura, Y.Aikawa, O.Nishimura, K.Nakano

Jpn. Jour. Water Treat. Biol.　48　(4)　133-140　2012/12
Publisher:
DOI： 10.2521/jswtb.48.133 　

ISSN： 0910-6758
Analysis of Sedimentary Organic Carbon Origin in Taihu Lake using by Carbon and Nitrogen Stable Isotope Ratio Peer-reviewed

M.Fujibayashi, M.Nomura, X.G.Xu, X.N.Li, Y.Aikawa, O.Nishimura

Environmental Engineering Research, JSCE　49　(7)　III_493-III_498　2012/11
Publisher: Japan Society of Civil Engineers
DOI： 10.2208/jscejer.68.III_493 　

ISSN： 2185-6648

More details Close

Contribution of autochthonous (cyanobacteria) and allochthonous (reed) organic matter to sediment and utilization of organic matter by bacteria and benthic animals in northeast area of hypereutrophic lake, Taihu lake were investigated. Although Taihu lake suffered algal bloom almost over a year, two sources mixing model of carbon stable isotope ratio analysis showed that contribution of reed was more dominant than cyanobacteria in Taihu lake. Food web analysis using by bulk carbon and nitrogen stable isotope ratio indicated benthic animals mainly assimilated cyanobacteria. Moreover carbon stable isotope ratio of bacterial fatty acids in sediment showed bacteria have also assimilated cyanobacteria. These findings indicated turnover of cyanobacterial carbon was faster than reed, which seemed to be a reason sediment organic carbon was mainly originated from reed in Taihu lake.
Origin and Bacterial Utilization of Organic Matters in Tidal-Flat Sediment Peer-reviewed

W.S.Shin, M.Fujibayashi, Y.Nagahama, M.Nomura, O.Nishimura

Jpn. Jour. Water Treat. Biol.　48　(2)　29-35　2012/06

DOI： 10.2521/jswtb.48.29 　
Nutritional importance of seagrasses to biodiversity of coastal area

Nagahama Yumi, Nomura Munehiro, Nishimura Osamu

Annual report of the Society for the Promotion of Construction Engineering　47　49-53　2012/04/01
Publisher: 東北大学
ISSN： 0288-9994
Fatty Acid Composition between Nuttallia olivacea and Hediste spp. in the Nanakita Estuary, Japan: Estimation of Food Sources Peer-reviewed

W.S.Shin, M.Fujibayashi, M.Nomura, K.Nakano, O.Nishimura

Journal of Water and Environment Technology　10　(1)　11-22　2012/03/28
Publisher: Japan Society on Water Environment
DOI： 10.2965/jwet.2012.11 　

ISSN： 1348-2165

More details Close

The spatial variability of the food availability in different depositional environments (Nanakita estuary, Japan) was investigated using fatty acid biomarkers. The main objective of the present study was to determine the food availability for Nuttallia olivacea and Hediste spp. in connection with the depositional environment of organic matter (OM). Sandy sediment was mainly occupied by diatoms, bacteria and marine organic matter. Meanwhile, muddy sediment is dominated by diatoms, bacteria and terrestrial organic matter. The main food sources and food availability for N. olivacea were mostly dominated by diatoms, bacteria and dinoflagellates in connection with the depositional environment. Meanwhile, the food utilization characteristics of Hediste spp. may be attributable to the lower food selectivity due to their deposit feeding. From these results, the food availability for N. olivacea was more influenced by the depositional environment in estuarine tidal flat than Hediste spp.
Organic Matter Sources in Sediments of Zostera japonica Beds and Nearby Sandy Areas Peer-reviewed

Y.Nagahama, R.Nakayama, W.S.Shin, M.Fujibayashi, M.Nomura, O.Nishimura

Environmental Engineering Research, JSCE　48　III_117-III_122　2011/11
Evaluation of the Treatment Performance of Multi Stage Vertical Flow Constructed Wetlands for Livestock Farming Effluent Peer-reviewed

J.Chigira, K.Nakano, H.L.Song, N.Chiba, M.Nomura, O.Nishimura

Environmental Engineering Research, JSCE　48　III_627-III_631　2011/11
Contribution of Phragmites australis as Nutrition for Macrobenthos in Estuarine Tidal Flats Peer-reviewed

W.S.Shin, M.Fujibayashi, Y.Nagahama, M.Nomura, K.Nakano, Y.Aikawa, O.Nishimura

Proceeding USB flash memory of The 4th IWA-ASPIRE Conference and Exhibition　2011/10
Design and Operation of Multi-stage Vertical Flow Constructed Wetland Treating Milking Parlor Wastewater and Paddock Runoff Peer-reviewed

K.Nakano, J.Chigira, K.Nakamura, T.Yano, C.Maruo, M.Nomura, Y.Aikawa, O.Nishimura

Proceeding USB flash memory of The 4th IWA-ASPIRE Conference and Exhibition　2011/10

DOI： 10.2521/jswtb.47.103 　
Start-up Water Purification Performance of Multi-stage Vertical Flow Constructed Wetland Treating Milking Parlor Wastewater and Paddock Run-off Peer-reviewed

K.Nakano, J.Chigira, H.L.Song, T.Yano, C.Maruo, M.Nomura, Y.Aikawa, O.Nishimura

Jpn. Jour. Water Treat. Biol.　47　(3)　103-110　2011/09
Publisher:
DOI： 10.2521/jswtb.47.103 　

ISSN： 0910-6758
Characterization of the Carbon Stable Isotope Ratio and Fatty Acid Structure of Zostera japonica in Coastal Areas Peer-reviewed

Yumi NAGAHAMA, Munehiro NOMURA, Megumu FUJIBAYASHI, Woo-seok SHIN, Osamu NISHIMURA

Journal of Water and Environment Technology　9　(2)　101-109　2011/06/30
Publisher: Japan Society on Water Environment
DOI： 10.2965/jwet.2011.101 　

ISSN： 1348-2165

More details Close

Some researchers suggest that Zostera japonica has important roles as primary producers in tidal flat ecosystem. Recently, it is known that the methods involving tracers in stable isotope ratio analysis and fatty acid structures stand up to clarify the origin of organic matter. If these methods can be used, it would be possible to clarify the role of organic matter derived from Z. japonica. However, these methods cannot be used yet because the characteristics of stable isotope ratios and fatty acid structures in Z. japonica are not clear. The objectives of this research are the clarification of the characteristics of stable isotope ratio and fatty acid structure in Z. japonica. Moreover, the availability as tracer of organic matter origin was explored; and the characteristics of stable isotope and fatty acid structure of Z. japonica were compared with other primary producers in tidal flat. Results showed that Z. japonica contained large amounts of 18:2n6 and 18:3n3 and they were used as biomarkers of other seagrass-derived organic matter. In addition, Z. japonica also contained LCFAs, which is used as biomarker of terrestrial plants. These results show that LCFAs are not the only biomarkers that can be used to trace the organic matter in terrestrial plants.
Importance of Zostera japonica as a Food Source for Benthos in Intertidal Zone Peer-reviewed

Y.Nagahama, M.Nomura, M.Fujibayashi, W.S.Shin, O.Nishimura

Meeting Program of ASLO Aquatic Sciences Meeting　78　2011/02
The Study on Contribution of Microbial Organic Matter in Formation of Tidal Flat Sediment Peer-reviewed

W.S.Shin, M.Fujibayashi, Y.Nagahama, M.Nomura, O.Nishimura

Meeting Program of ASLO Aquatic Sciences Meeting　86　2011/02
Elimination of estrogens and estrogenic activity from sewage treatment works effluents in subsurface and surface flow constructed wetlands Peer-reviewed

Hai-Liang Song, Xiao-Li Yang, Kazunori Nakano, Munehiro Nomura, Osamu Nishimura, Xian-Ning Li

INTERNATIONAL JOURNAL OF ENVIRONMENTAL ANALYTICAL CHEMISTRY　91　(7-8)　600-614　2011

DOI： 10.1080/03067319.2010.496046 　

ISSN： 0306-7319
Seasonal Variation of Food Vources on Bivalve and Nereidae in Estuary Tidal Flat Peer-reviewed

W.S.Shin, M.Fujibayashi, Y.Nagahama, M.Nomura, K.Nakano, O.Nishimura

Environmental Engineering Research, JSCE　47　223-228　2010/11
Effect of Photosynthesis of Benthic Microalgae on Decomposition of Sedimentary Organic Matter in Tidal Flat Peer-reviewed

M.Akutsu, S.Takechi, W.S.Shin, M.Nomura, K.Nakano, O.Nishimura

Environmental Engineering Research, JSCE　47　237-242　2010/11
Start-up Water Purification Performance of Multi-stage Vertical Flow Constructed Wetland Treating Milking Parlor Wastewater and Paddock Run-off Peer-reviewed

K.Nakano, J.Chigira, H.L.Song, T.Yano, M.Nomura, Y.Aikawa, O.Nishimura

Proceedings of 12th International Conference on Wetland Systems for Water Pollution Control　1　699-707　2010/10
Evaluation of Food Sources Quality for Pond Snail, Bellamya chinensis Based on Essential Fatty Acids Requirements Peer-reviewed

M.Fujibayashi, W.S.Shin, Y.Nagahama, N.Chiba, M.Nomura, K.Nakano, O.Nishimura

Program of 31st Congress of the International Limnological Society　2010/08
The Origin of Sediment Organic Matters at Tidal Flat in Estuary Peer-reviewed

W.S.Shin, Y.D.Lee, M.Fujibayashi, Y.Nagahama, M.Nomura, O.Nishimura

Journal of Korean Society of Environmental Engineers　32　(1)　2010/01
Influece of Anabaena Akinete on Algal-Bloom in Dam Reservoir Peer-reviewed

M.Tsuchida, M.Nomura, S.Masuda, N.Chiba, N.Fujimoto, K.Nakano, O.Nishimura

Environmental Engineering Research, JSCE　46　75-79　2009/11
Morphological Identification and Phylogenetic Evaluation of the Cyanobacterium Anabaena Isolated from Urushizawa Dam and other Lakes and Reservoirs Peer-reviewed

N.Fujimoto, Y.Satoh, M.Ohkuni, S.Aso, A.Ohnishi, M.Suzuki, M.Nomura, O.Nishimura

Journal of Japan Society on Water Environment　32　(9)　501-504　2009/09

DOI： 10.2965/jswe.32.501 　

More details Close

Note
Analysis of Organic Matters Transportation by Stable Isotope and FattyAcids in Benthic Ecosystems of Zostera Japonica Meadows Peer-reviewed

Y.Nagahama, M.Nomura, M.Fujibayashi, W.S.Shin, K.Nakano, O.Nishimura

Proceedings of the Third International Conference on Estuaries and Coasts　329-335　2009/09
Estimation of Origin of Sediment Organic Matters in Tidal Flat byAcid Decomposability Peer-reviewed

W.S.Shin, M.Fujibayashi, Y.Nagahama, M.Nomura, K.Nakano, O.Nishimura

Proceedings of the Third International Conference on Estuaries and Coasts　373-379　2009/09
Characteristics of Allelochemicals Released from Brown Alga Sargassum horneri Peer-reviewed

F.Takeda, C.Matsuo, M.Nomura, K.Nakano, O.Nishimura

Proceedings of the Third International Conference on Estuaries and Coasts　411-418　2009/09
Estrogen removal from treated municipal effluent in small-scale constructed wetland with different depth Peer-reviewed

Hai-Liang Song, Kazunori Nakano, Takashi Taniguchi, Munehiro Nomura, Osamu Nishimura

BIORESOURCE TECHNOLOGY　100　(12)　2945-2951　2009/06

DOI： 10.1016/j.biortech.2009.01.045 　

ISSN： 0960-8524
Allelopathy by Emergent Plants Inhibiting Growth of Microcystis Peer-reviewed

F.Takeda, M.Nomura, K.Nakano, O.Nishimura, Y.Shimada, S.Fukuro, H.Tanaka, Y.Inamori

Journal of Water and Waste　51　(6)　477-483　2009/06
Publisher:
ISSN： 0513-5907
Control Strategy of Anoxic-Oxic Sequencing Batch Reactor System using a Specific Feature of Nitrous Oxide Gas Peer-reviewed

S.Masuda, M.Mizuochi, M.Nomura, N.Chiba, K.Nakano, Y.Inamori, O.Nishimura

Journal of Japan Society on Water Environment　32　(3)　147-152　2009/03
Publisher: Japan Society on Water Environment
DOI： 10.2965/jswe.32.147 　

ISSN： 0916-8958

More details Close

An experimental study was conducted to establish the control strategy of an anoxic-oxic sequencing batch reactor system (AOSBR) using a specific feature of N₂O generated during the anoxic and oxic phases. Since NH₄⁺-N, NO₂^--N and gaseous N₂O (GN₂O) were found to disappear simultaneously in the oxic phase, the end point of nitrification may be detected from the GN₂O profile. It was suggested that the stagflation of nitrification and denitrification could be detected by abnormal GN₂O emission in the oxic and anoxic phases. Compared with the conventional indexes of AOSBR, GN₂O has several advantages. First, the regulation of GN₂O emission could be conducted directly, and second maintenance is easier than conventional indexes because the GN₂O monitoring system is more durable than the monitoring system for water quality.
Microbial Degradation Characteristics of Fatty Acids of Macroalgae, Microalgae and Marsh Vegetation Peer-reviewed

W.S.Shin, M.Fujibayashi, Y.Nagahama, S.Takechi, M.Nomura, K.Nakano, O.Nishimura

Meeting Program of ASLO Aquatic Sciences Meeting　57　2009/02
Influence of the Organic matter Derived from Zostera japonica on Benthic Food Webs in Tidal Flat Peer-reviewed

Y.Nagahama, M.Nomura, M.Fujibayashi, W.S.Shin, O.Nishimura

Meeting Program of ASLO Aquatic Sciences Meeting　88　2009/02
Identification of Food Sources of Pond Snail, Cipangopaludina chinensis malleata, using Fatty Acid Analysis Peer-reviewed

M.Fujibayashi, W.S.Shin, Y.Nagahama, K.Nakano, N.Chiba, M.Nomura, O.Nishimura

Meeting Program of ASLO Aquatic Sciences Meeting　127　2009/02
Evaluation of extremely shallow vertical subsurface flow constructed wetland for nutrient removal Peer-reviewed

T. Taniguchi, K. Nakano, N. Chiba, M. Nomura, O. Nishimura

WATER SCIENCE AND TECHNOLOGY　59　(2)　295-301　2009

DOI： 10.2166/wst.2009.853 　

ISSN： 0273-1223
Differences in adsorption mechanisms of heavy metal by two different plant biomasses: reed and brown seaweed Peer-reviewed

B. Southichak, K. Nakano, M. Nomura, N. Chiba, O. Nishimura

WATER SCIENCE AND TECHNOLOGY　59　(2)　339-346　2009

DOI： 10.2166/wst.2009.867 　

ISSN： 0273-1223
The origin and characteristics of sediment organic matters at three tidal flats in estuary of Nanakita River Peer-reviewed

W.Shin, M.Fujibayashi, M.Nomura, K.Nakano, O.Nishimura

Environmental Engineering Research, JSCE　45　547-552　2008/11
Publisher: Japan Society of Civil Engineers
DOI： 10.11532/proes1992.45.547 　

ISSN： 1341-5115

More details Close

The purpose of this study is to clarify the origin of organic matters on sediment and the characteristics of temporal variation at an estuarine tidal flat. Silt-clay content (<63μm), chlorophyll a, TOC, C/N ratio and the stable isotope ratio of carbon and nitrogen were measured at three tidal flats around the estuary of the Nanakita River. As a result, organic matters originating from ocean and epiphytic algae greatl contributed to sedimentation of organic matters at Stn.A, sandy tidal flat, though terrigenous organ matters did at Stn.C, muddy tidal flat. On the other hand, Stn.B, the intermediate characteristic of Stn., and C, was affected by particulate organic matters derived from the river water and wastewate Furthermore, it was revealed that the volume and origin of organic matters in the sediments depended c temporal variation, and the factors were different from the Stns, i.e. epiphytic algae for Stn.A, transport of sediments from Stn.A caused by events for Stn.B and the eventual sedimentation of organ matters originating from terrestrial plants, respectively.
The Mechanism of the Water-bloom Production in Urushizawa Dam Reservoir Peer-reviewed

S.Masuda, M.Nomura, F.Tsubone, N.Chiba, N.Fujimoto, K.Nakano, O.Nishimura

Environmental Engineering Research, JSCE　45　103-112　2008/11
Publisher: Japan Society of Civil Engineers
DOI： 10.11532/proes1992.45.103 　

ISSN： 1341-5115

More details Close

Both of the field and the literature survey have been carried out to investigatethe mechanism of the water-bloom production in Urushizawa dam reservoir. From the literature examination, the average value of the tempreture of the surface water was 22.3°C in the year in which the water-bloom was generated, 17.4°C in the year in which that was not. The cyanobacteria occupied larger than the greenalgae and the diatom when the tempreture of the surface water, TN, TP and TN/TP ratio was relatively high. This tendency was same in both of the field and the literature survey. It was indicated that the production of the cyanobacteria was derived by the vanish of PO₄-P in the surface water. It was suggested that the vanish of PO₄-P in the surface water was derived by the production of diatoms in spring, the discharge of diatoms to the outside of resouvoir and sedimentation. The increase of inflow due to the flash of the river promoted the production of the green algae, because of the disturbance of the aquatic environments in the dam reservoir and the supply of the phosphrus.
Effect of emergence time and sediment on the growth of Zostera japonica Peer-reviewed

Y.Ikegami, M.Nomura, Y.Nagahama, K.Nakano, O.Nishimura

Environmental Engineering Research, JSCE　45　81-88　2008/11
Publisher: Japan Society of Civil Engineers
DOI： 10.11532/proes1992.45.81 　

ISSN： 1341-5115

More details Close

It is well known that a seagrass (Zostera japonica) has a function to let the benthic fauna of intertidalzone increase. To conserve and construct seagrass bed, it is important to clarify the relationship between growth conditions and environmental factors. However, it is difficult to understand the factors that affectthe growth of Z japonica from the results of a field survey. Therefore, a laboratory experiment wascarried out to study the effect of environmental conditions such as emergence time and bottom sedimentconditions on the growth of Z japonica. The growth of Z japonica was found to be good in thesubmergence condition, but it was not affected by the various sediment conditions. Thus, it was indicatedthat compared to sediment, emergence time is one of the most important environmental factors on thegrowth of Z japonica.
Evaluation of Allelopathic Effect of Polyphenol to Microcystis aeruginosa by New Bioassay Method Peer-reviewed

M.Shioiri, F.Takeda, N.Chiba, M.Nomura, K.Nakano, O.Nishimura

Environmental Engineering Research, JSCE　45　157-162　2008/11
Publisher: Japan Society of Civil Engineers
DOI： 10.11532/proes1992.45.157 　

ISSN： 1341-5115

More details Close

It was confirmed that allelopathic effect is influenced by nutrient condition. But existing method of algal bioassay system can't exclude the influence of nutrient, because nutrient is added not to be a limiting factor. In this research, we established a new bioassay method that test algae Microcystis aeruginosa could growth without any nutrient, and examined the nutrient influence to the polyphenol's allelopathic effect by the new method. Furthermore the allelopathic mechanism was studied by applying DCMU (3-(3, 4-dichlorophenyl)-1, 1-dimethylurea) and glucose. As a results, pyrogallic acid (PA) had a allelopathic effect to attack algae cell directly, and the allelopathic effect was enhanced when nutrient exists. It was also revealed that PA inhibits M.aeruginosa from photosynthesizing.
Comparison of Novel Bioassay Method and Previous Method for Ecological Impact Assessment using Microalgae Peer-reviewed

F.Takeda, M.Shioiri, M.Nomura, K.Nakano, O.Nishimura

Environmental Engineering Research, JSCE　45　163-168　2008/11
Publisher: Japan Society of Civil Engineers
DOI： 10.11532/proes1992.45.163 　

ISSN： 1341-5115

More details Close

Novel bioassay method that test micioalgae can show the maximum specific growth rate μ_max regardless of nutrient conditions in test at was constructed. The method and a previous bioassay method was compared based on the evaluation of growthinhibiting effect by the extracts and culture solution of a brown alga Sargassum homeri using diatom Skeletonema costatum. As a result, the growth-inhibiting effect of the odract in a pevious bioassay method was underestimated compared to that in the novel bioassay method, which would be because of the long-term bioassay period and the de ease of the growth-inhibiting effect by the addition of nuirients to test water in a previous method. Since a previous bioassay method is indispensable to add nutrients to test water to avoid the nutrient limitation for the growth, it was revealed that a previous method cannot make the appropriate evaluation of chemical toxicity. Therefore It was considered that the novel bioassay method is useful to apply for the ecological impact assessment of cheinicals because the method is possible to evaluate a growth-inhibiting effect without the addition ofnutriets to test water.
Distribution of Antibiotic-resistant Bacteria in Aquatic Environments in Miyagi Prefecture Peer-reviewed

E.Nakao, K.Nakano, M.Nomura, N.Chiba, O.Nishimura, S.Watanabe, T.Nakamura, T.Hatakeyama

Environmental Engineering Research, JSCE　45　187-194　2008/11
Publisher: Japan Society of Civil Engineers
DOI： 10.11532/proes1992.45.187 　

ISSN： 1341-5115

More details Close

Actual situations concerning the distribution of antibiotic-resistant bacteria in aquatic environments around livestock area in Miyagi prefecture were investigated. Four selective plates to isolate bacteria derived from feces indicating wastewater pollution by livestock farms and indigenous bacteria in the aquatic environments were used to examine the existing ratio of antibiotic-resistant bacteria to ampicillin, kanamycin, oxytetracycline and chloramphenicol. As a result, resistant bacteria to these antibiotics were extensively found in indigenous bacteria as well as intestinal bacteria derived from livestock farm. Their distribution was confirmed not only at down-flow area of livestock farm, but also at up-flow area without livestock farm. The relationships between the ratio of antibiotic-resistant bacteria and wastewater pollution by livestock farms were indicated by correlation with intestinal bacterial number. Although some indigenous antibiotic-resistance was observed, the ratio of antibiotic-resistant bacteria was unusually high at some investigation sites. Potential causes for high ratio of antibiotic-resistant bacteria were discussed.
Study on Bioaccumulation of Trace Metals in Sessile Animals in Shimizu Port Seawall Peer-reviewed

R.Suzuki, M.Oshima, M.Nomura, O.Nishimura, K.Kimura

Annual Journal of Civil Engineering in the Ocean, JSCE　24　315-320　2008/07
Publisher:
DOI： 10.2208/prooe.24.315 　

ISSN： 0912-7348
The Effects of the Bed for Zizania latifolia and Predation by Swan on Zizania latifolia Growth Peer-reviewed

A.Iwabuchi, K.Nakano, N.Chiba, M.Nomura, O.Nishimura

Doboku Gakkai Ronbunshuu G　64　(2)　123-131　2008/05

DOI： 10.2208/jscejg.64.123 　
Seasonal Change and Removal of Estrogen in a Swine Wastewater Treatment Plant Peer-reviewed

Y.X.Ren, K.Nakano, M.Ohori, N.Chiba, M.Nomura, O.Nishimura

Journal of Japan Society on Water Environment　31　(3)　155-161　2008/03
Publisher: Japan Society on Water Environment
DOI： 10.2965/jswe.31.155 　

ISSN： 0916-8958

More details Close

An investigation on the seasonal change and removal of estrogen in a swine wastewater treatment plant was carried out from July 2004 to September 2005. Natural estrogens (estrone, estradiol and estriol) in raw wastewater showed similar seasonal changes and their peak values reached 162, 872, 4,480 ng · l^-1, respectively, whereas equol showed a different trend in which the maximum concentration was markedly high at 43,300 ng · l^-1. The results showed that approximately 93% of the total estrogenicity in raw wastewater was attributed to equol. The sequencing batch reactor (SBR) process of the swine wastewater treatment plant was efficient to remove selected estrogens for quantitative analysis as well as nitrogen and phosphate. Moer than 99% removal efficiencies for all selected estrogens and total estrogenicity were attained by the SBR process. The total estrogenicity that remained after the SBR process was, however, still higher than the predicted noneffective concentration level for fish (PNEC). It was found that a baffle channel located at the final stage of the treatment flow contributed to decreasing the estrogenicity to the PNEC level. Experimental results in the laboratory showed that filamentous algae inhabiting the bottom of the channel were responsible for the estrogenicity decrease observed in the baffle channel.
Application of food assimilation analysis using fatty acids composition of pond snails originating from the Izunuma area

Megumu Fujibayashi, Kazunori Nakano, Nobuo Chiba, Munehiro Nomura, Osamu Nishimura

Izunuma-Uchinuma Wetland Researches　2　(0)　27-33　2008
Publisher: 公益財団法人宮城県伊豆沼・内沼環境保全財団
DOI： 10.20745/izu.2.0_27 　

More details Close

Three pond snails, Cipangopaludina japonica, C. chinensis malleata, and Sinotaia quadrata histrica, were collected from different habitats in the Izunuma area. We analyzed their fatty acids composition for inferring food assimilation. Although each pond snail lives in a different habitat, fatty acids composition for each snail showed similar patterns, and high contributions of green algae, cyanobacteria, and bacteria fatty acids were detected. This indicated each pond snail has similar food assimilation tendencies. Though each pond snail has a potential to live in either pond, rice field, or river habitat, the coexistence of three pond snails rarely occurs. This might be a result of exclusive competition for food caused by same food preferences.
Marine macroalga Sargassum horneri as biosorbent for heavy metal removal: roles of calcium in ion exchange mechanism Peer-reviewed

B. Southichak, K. Nakano, M. Nomura, N. Chiba, O. Nishimura

WATER SCIENCE AND TECHNOLOGY　58　(3)　697-704　2008

DOI： 10.2166/wst.2008.696 　

ISSN： 0273-1223
Effect of Shading on Surface-Flow-Constructed Wetland Planted with Luffa Cylindrica to Treat Effluent from Rice Fields Peer-reviewed

C.Obunai, K.Nakano, N.Chiba, M.Nomura, O.Nishimura

Journal of Japan Society on Water Environment　30　(12)　715-722　2007/12
Publisher: Japan Society on Water Environment
DOI： 10.2965/jswe.30.715 　

ISSN： 0916-8958

More details Close

The terrestrial plant Luffa cylindrica was applied to a surface-flow-constructed wetland (SFCW) to treat effluent from rice fields. To control the excessive growth of weeds that interfere with the maintenance of SFCWs, SFCWs with and without shading were constructed and the effect of shading was investigated. The average removal efficiencies of T-N and T-P for 135 day operation of the SFCW with shading were 57 and 53%, respectively, while in the case of those without shading were 44 and 41%, respectively. This result indicates that the nutrient removal efficiency was stimulated by shading. Although L. cylindrica completely dominated the SFCW with shading, the total plant biomass production including weeds was higher without shading. The total length of the roots in the SFCW with shading was, however, 2.2-fold that without shading. Consequently, it was suggested that the longer root length observed in SFCW with shading promoted the sedimentation of nutrients, resulting in a nutrient removal efficiency higher than that in the case without shading. These results demonstrate that shading is effective not only to control the growth of weeds but also to enhance the growth of roots in SFCWs, resulting in easier maintenance and a higher nutrient removal efficiency.
Evaluation of Reed Chip as a Carrier Material for Thermophilic Oxic Process Peer-reviewed

K.Jeon, M.Nomura, K.Nakano, O.Nishimura

Doboku Gakkai Ronbunshuu G　63　(4)　216-223　2007/11

DOI： 10.2208/jscejg.63.216 　
Characterization of Seagrass Bed Habitat and its Effect on Benthic Fauna Peer-reviewed

Y.Nagahama, M.Nomura, K.Nakano, K.Kimura, O.Nishimura

Doboku Gakkai Ronbunshuu G　63　(4)　233-240　2007/11

DOI： 10.2208/jscejg.63.233 　
Potential Inhibitors in Long-term Operation of Thermophilic Oxic Process Peer-reviewed

M.Sagawa, K.Jeon, M.Nomura, N.Chiba, K.Nakano, O.Nishimura

Environmental Engineering Research, JSCE　44　167-174　2007/11
Publisher: Japan Society of Civil Engineers
DOI： 10.11532/proes1992.44.167 　

ISSN： 1341-5115

More details Close

The variation of physical properties of carrier and accumulation of salts in the thermophilic oxic process (TOP) reactor during long-term treatment of swine waste and their influence on decomposition rate of organic waste were examined. During long-term operation treatment test, the Dso of carrier became higher when inhibition of treatment was observed after continuous treatment for 100 days. Since the decomposition rate of organic waste could not be improved completely by destruction of massiveness of carrier, influence of salts accumulated in the reactor was considered not to be negligible. Massiveness of carrier and accumulation of salts during long-term operation of TOP resulted in also low ATP concentration in the reactor, revealing significance of these two factors on reducing microbial activity in the TOP reactor.
Investigation of Water-Bloom Control Effect in Urushizawa Dam Reservoir Peer-reviewed

M.Nomura, H.Sato, K.Shitara, F.Tsubone, N.Chiba, N.Fujimoto, K.Nakano, O.Nishimura

Environmental Engineering Research, JSCE　44　525-530　2007/11
Publisher: Japan Society of Civil Engineers
DOI： 10.11532/proes1992.44.525 　

ISSN： 1341-5115

More details Close

Field survey has been carried out to investigate the water-bloom control effect based on characteristics of water quality stratification in Urushizawa dam reservoir without the pollutant load source in the basin. Water quality prediction model which could reproduce stratification and fluctuation of Chl.a approximately was able to be constructed by considering inflow of the river water and intake of the dam water. As a result of examining the intake method, it was found that Chl.a might be increased by supplying nutrient from the lower layer to the surface, though to decrease Chl.a by intake of surface water was effective.
Differences in Adsorption Mechanism of Heavy Metal by Two Different Plant Biomass: Reed and Brown Seaweed Peer-reviewed

B.Southichak, K.Nakano, M.Nomura, N.Chiba, O.Nishimura

Proceedings of 2nd IWA-ASPIRE　012　2007/10
Control Parameters Influencing the Adsorption of Heavy Metals by Protonated Reed Biomass Peer-reviewed

B.Southichak, K.Nakano, M.Nomura, N.Chiba, O.Nishimura

Jpn. Jour. Water Treat. Biol.　43　(3)　159-167　2007/09
Publisher:
DOI： 10.2521/jswtb.43.159 　

ISSN： 0910-6758
Effects of bacterial activity on estrogen removal in nitrifying activated sludge Invited Peer-reviewed

Yong-Xiang Ren, Kazunori Nakano, Munehiro Nomura, Nobuo Chiba, Osamu Nishimura

WATER RESEARCH　41　(14)　3089-3096　2007/07

DOI： 10.1016/j.watres.2007.04.028 　

ISSN： 0043-1354
A thermodynamic analysis on adsorption of estrogens in activated sludge process Peer-reviewed

Yong-Xiang Ren, Kazunori Nakano, Munehiro Nomura, Nobuo Chiba, Osamu Nishimura

WATER RESEARCH　41　(11)　2341-2348　2007/06

DOI： 10.1016/j.watres.2007.01.058 　

ISSN： 0043-1354
実験池におけるドブガイのグロキジュウム幼生のメダカへの付着状況

木本達也, 田中仁志, 木持謙, 金澤光, 須藤隆一, 若林明子, 野村宗弘

日本陸水学会講演要旨集　72　174-174　2007
Publisher: 日本陸水学会
DOI： 10.14903/jslim.72.0.174.0 　
脂肪酸分析によるタニシの食性解析

藤林恵, 中野和典, 千葉信男, 野村宗弘, 西村修

日本陸水学会講演要旨集　72　29-29　2007
Publisher: 日本陸水学会
DOI： 10.14903/jslim.72.0.29.0 　
Comparison of Biological Carbon Budget among Areas with Different Sediment Property in a Tidal Flat Peer-reviewed

Y.Ogawa, T.Sakamaki, M.Nomura, K.Nakano, O.Nishimura

Doboku Gakkai Ronbunshuu G　62　(3)　278-286　2006/08

DOI： 10.2208/jscejg.62.278 　
Evaluation of the Amount Loads of the Nutrients from River to Ofunato Bay Peer-reviewed

N.Kashiwadate, O.O.Fidel, H.Sato, M.Nomura, M.Sawamoto

Annual Journal of Civil Engineering in the Ocean, JSCE　22　787-792　2006/07
Publisher:
DOI： 10.2208/prooe.22.787 　

ISSN： 0912-7348
Phragmites australis: A novel biosorbent for the removal of heavy metals from aqueous solution Peer-reviewed

Bounheng Southichak, Kazunori Nakano, Munehiro Nomura, Nobuo Chiba, Osamu Nishimura

WATER RESEARCH　40　(12)　2295-2302　2006/07

DOI： 10.1016/j.watres.2006.04.027 　

ISSN： 0043-1354
Effects of Tsugaru Warm Current as Coastal Boundary Current on the Water Temperature and Dissloved Oxygen in Ofunato Bay Peer-reviewed

H.Sato, N.Kashiwadate, M.Nomura, M.Sawamoto

Annual Jour. of Hydraulic Engineering, JSCE　50　1393-1398　2006/03

DOI： 10.2208/prohe.50.1393 　
Nutrient Removal from Eutrophic lake Water by a Constructed Wetland Channel Planting with Luffa cylindrica Peer-reviewed

K.Nakano, T.Kawasaki, M.Nomura, N.Chiba, O.Nishimura

J. Environ. Syst. and Eng., JSCE　7　(38)　61-68　2006/02
Publisher:
DOI： 10.2208/jscejg.62.105 　

ISSN： 0289-7806
ヘチマ植栽水路による富栄養化湖沼水の水質浄化特性 Peer-reviewed

中野和典, 川崎剛, 野村宗弘, 千葉信男, 西村修

土木学会論文集Ｇ　62　(1)　105-112　2006
Publisher: Japan Society of Civil Engineers
DOI： 10.2208/jscejg.62.105 　

ISSN： 1880-6082

More details Close

Nutrient removal ability of a constructed wetland channel planting with Luffa cylindrica was examined for eutrophic lake water. The DIP removal by the channel was expressed as primary reaction with a reaction rate constant of 20.8 day^-1. Nutrient absorbed by filamentous green algae (FGA) breeding in the channel occupied 67 and 90 % of total DIN and DP removed in the channel, revealing the significance of FGA in the nutrient removal. Since the FGA existed around the root of L. cylindrica, it could be considered that L. cylindrica contributed to support the inhabitation of FGA. High nutrient removal ability despite low nutrient concentration in the lake water demonstrates the applicability of the channel planting L. cylindrica on direct nutrient removal from eutrophic lake water.
Assimilable organic carbon formation from algogenic organic matter and its variation by chlorination Peer-reviewed

J. Kim, S. Lee, S. Xu, M. Akiba, M. Nomura, N. Chiba, K. Nakano, O. Nishimura

Drinking Water Treatment, Supply and Management in Asia (IWA-ASPIRE 2005)　6　(2)　239-244　2006

DOI： 10.2166/ws.2006.075 　

ISSN： 1606-9749
Pb(II) biosorption on reed biosorbent derived from wetland: effect of pretreatment on functional groups Peer-reviewed

B. Southichak, K. Nakano, M. Nomura, N. Chiba, O. Nishimura

WATER SCIENCE AND TECHNOLOGY　54　(10)　133-141　2006

DOI： 10.2166/wst.2006.788 　

ISSN： 0273-1223
Transportation Characteristic of Particulate Organic Matter between Sediment and Overlaying Water in Gamo Tideland Peer-reviewed

S.Kofuku, T.Sakamaki, M.Nomura, Y.Ichimura, K.Kimura, O.Nishimura

Environmental Engineering Research, JSCE　42　305-314　2005/12
Publisher: Japan Society of Civil Engineers
DOI： 10.11532/proes1992.42.305 　

ISSN： 1341-5115

More details Close

Field observation has been carried out to evaluate the relationship between sedimentand transportation characteristic of organic matter by calculating the organic carbon flux of sediment per day at the different sediment area of Gamo tideland during November, 2003. From the results, the settling of organic matter per day in sand area was confirmed. The filter feeder was considered to effect the settling of particle matter. The settling of organic matter in mud area and the erosion of organic matter in sand-mud area per day were occurred. As the result, the balance of organic substance in sand-mud sediment area was decreased. In addition, by using Acoustic Doppler Current Profiler (ADCP) for evaluating the transportation characteristic in short time of particle matter, it was found that the erosion was occurred rapidly at the high current velocity of flood tide while the settling was occurred at the low current velocity.
Characteristics of Water Quality Stratification related to the Water-Bloom Occurrence in Urushizawa Dam Lake Peer-reviewed

K.Shitara, M.Nomura, N.Chiba, N.Fujimoto, K.Nakano, O.Nishimura

Environmental Engineering Research, JSCE　42　487-493　2005/12
Publisher: Japan Society of Civil Engineers
DOI： 10.11532/proes1992.42.487 　

ISSN： 1341-5115

More details Close

Field survey has been carried out to evaluate the water quality stratification related to the water-bloom occurrence in Urushizawa dam without the pollutant load source in the basin during summer season in 2004. From the result obtained, Chl. a concentration was 300μg/l as a highest value at 0.5m water depth in August, and the dominance of Anabena sp. was observed. It was also found that the water bloom may be occurred by the accumulation of the nutrient such as the phosphorus in the only surface layer of the deep dam as well as a shallow lake, when the thermocline was formed. The fluctuation of phosphorus amount in surface layer was verified using the phosphorus balance model.
Effects of Density Intrusion on the Chlorophyll-a Variation of the Middle Layer in Ohfunato Bay Peer-reviewed

H.Sato, K.Takahashi, N.Kashiwadate, M.Nomura, M.Sawamoto

Proceedings of Coastal Engineering, JSCE　52　876-880　2005/11
Publisher:
DOI： 10.2208/proce1989.52.876 　

ISSN： 0916-7897
Assessment Method on Species Diversity of Macrobenthos in Tidal Flats and Shallow Sea Areas Peer-reviewed

Y.Shimada, O.Nishimura, M.Nomura, Y.Nakamura, K.Kimura, Y.Ichimura, S.Hukuro

Proceedings of Coastal Engineering, JSCE　52　1166-1170　2005/11
Publisher:
DOI： 10.2208/proce1989.52.1166 　

ISSN： 0916-7897
Allelopathic Effect Shown by Seawater from Sargassum horneri Bed on the Growth of Skeletonema costatum Peer-reviewed

F.Takeda, N.Chiba, M.Nomura, K.Nakano, O.Nishimura

Proceedings of 7th International Conference on the Mediterranean Coastal Environment, MEDCOAST'05　1　601-609　2005/10
The Effects of Seawater Exchange on the Structure of Water Quality in Enclosed Bay Peer-reviewed

H.Sato, K.Takahashi, N.Kashiwadate, M.Nomura, M.Sawamoto

Proceedings of the XXXI International Association of Hydraulic Engineering and Research Congress　3985-3991　2005/09
Mechanism responsible for fortnightly modulations in estuarine circulation in Tokyo Bay Peer-reviewed

K Nakayama, T Okada, M Nomura

ESTUARINE COASTAL AND SHELF SCIENCE　64　(2-3)　459-466　2005/08

DOI： 10.1016/j.eccs.2005.03.002 　

ISSN： 0272-7714

eISSN： 1096-0015
Influence of Limited Depth for Rhizosphere of Reed on its Nitrogen Removal Ability and Root Morphology Peer-reviewed

K.Nakano, T.Matsui, M.Fujibayashi, N.Chiba, M.Nomura, O.Nishimura

Journal of Water and Waste　48　(8)　687-694　2005/08
Effect of Pond Snail in Wetland Ecosystem on Epiphitic and Planktonic Algae Peer-reviewed

M.Fujibayashi, K.Nakano, N.Chiba, M.Nomura, O.Nishimura

Journal of Water and Waste　47　(8)　681-686　2005/08
Seasonal Variation Characteristics and Evaluation of the Amount Loads of the Nutrients in Ofunato Bay Peer-reviewed

N.Kashiwadate, M.Nomura, M.Sawamoto

Annual Journal of Civil Engineering in the Ocean, JSCE　21　367-372　2005/07
Publisher:
DOI： 10.2208/prooe.21.367 　

ISSN： 0912-7348
Study on the Water Quality Characteristic and Seawater Exchange System using Negative Pressure in Ofunato Bay Peer-reviewed

K.Takahashi, H.Sato, N.Kashiwadate, M.Nomura, M.Sawamoto

Annual Journal of Civil Engineering in the Ocean, JSCE　21　373-378　2005/07
Publisher:
DOI： 10.2208/prooe.21.373 　

ISSN： 0912-7348
Beneficial Reuse of Reed from Constructed Wetland as a New Biosorbent for Heavy Metal Removal from Aqueous Solution Peer-reviewed

B.Southichak, N.Chiba, K.Nakano, M.Nomura, O.Nishimura

Proceedings of 1st IWA-ASPIRE　8F-2　2005/07
Effect of Water Surface Loading and Harvesting on Purification Function by Hydroponic Biofilter Method and Evaluation of Pollution Control Efficiency using Mesocosm Experiment Peer-reviewed

X.N.LI, T.Inaishi, H.Nakazato, M.Nomura, O.Nishimura, Y.Inamori, R.Sudo

Jpn. Jour. Water Treat. Biol.　41　(2)　61-71　2005/06

DOI： 10.2521/jswtb.41.61 　
Effect of Planting Bed on Nutrient Removal from Sewage Treatment Water by Constructed Reed Bed System Peer-reviewed

H.Kunieda, X.N.Li, K.Yamada, N.Chiba, M.Nomura, K.Nakano, O. Nishimura, R.Sudo

Jpn. Jour. Water Treat. Biol.　41　(2)　93-101　2005/06

DOI： 10.2521/jswtb.41.93 　
大船渡湾における海水密度変動による海水交換と流況変動に関する検討 Peer-reviewed

佐藤博信, 高橋研也, 野村宗弘, 沢本正樹

水工学論文集　49　1315-1320　2005/03
Publisher: Japan Society of Civil Engineers
DOI： 10.2208/prohe.49.1315 　

ISSN： 0916-7374

More details Close

The relation between seawater exchange and sea current pattern was investigated. For this purpose, ocean currents conditions were observed in Sanriku Sea off using NOAA/AVHRR data. It was confirmed that density variation is not so much affected by salinity. Therefore, the regression function is derived from observed density and the density which was calculated using constant value of salinity and observed temperature. Using the regression function, σ_t distribution in Sanriku sea off is evaluated from sea surface temperature data. As the result, the behavior of Oyashio water mass was observed from the σ_t distribution. Analyzing time series temperature and salinity data in Ohfunato bay, it was confirmed seawater exchange occurred under the influence of Oyashio water mass. It was also observed distributions of chlorophyll-a and nutrient change at this seawater exchange and small density variation affects chlorophyll-a distribution at the depth of middle layer.
Influence of Sea Current to the Chlorophyll-a Distribution of Enclosed Bay in Sanriku Coastal Area Peer-reviewed

H.Sato, K.Takahashi, M.Nomura, M.Sawamoto

Proceedings of 4th International Symposium on Environmental Hydraulics and 14th Congress of Asia and Pacific Division, International Association of Hydraulic Engineering and Research　825-831　2004/12
Field Observation and Analysis of Cross-Shore Distribution of Water Quality in Banzu Tidal Flat and Adjoining Area of Tokyo Bay Peer-reviewed

K.Kamio, M.Nomura, Y.Nakamura

Proceedings of Coastal Engineering, JSCE　51　1011-1015　2004/11
Publisher:
DOI： 10.2208/proce1989.51.1011 　

ISSN： 0916-7897
Biosorption of Copper(II), Cadmium(II), Nickel(II), Lead(II) and Zinc(II) from Aqueous Solution by Reed Biomass Peer-reviewed

B.Southichak, K.Nakano, N.Chiba, M.Nomura, O.Nishimura

Proceedings of 10th Asian Pacific Confederation of Chemical Engineering Congress　2004　614-614　2004/10
Publisher: The Society of Chemical Engineers, Japan
DOI： 10.11491/apcche.2004.0.614.0 　

More details Close

Biomass of reed (Phragmites australis) has demonstrated the favorable potential to be used as a nobel biosorbent for many heavy metals removal from contaminated water. The favorable condition for reed biomass to adsorb Copper, Cadmium, Nickel, Lead and Zinc were found to be in the pH 6.0, 7.0, 6.0, 4.0 and 7.0 respectively. The biosorption of all heavy metals reached equilibrium within 6 h. Alkali-treated reed biomass showed higher in adsorption capacity when compared to acid-treated, washed reed and virgin reed respectively. Adsorption mechanism of heavy metal onto reed biomass was discussed based on scanning electron microscope (SEM), surface area, FT-IR and Zeta potential. In addition, desorption was highly succeeded by using the acid elution of HCl which support the hypothesis that ion-exchange mechanism may take a major part in the adsorption by reed biomass. For the reusability, more than 3 cycles adsorption-desorption process can be achieved. Due to the high elution efficiency, low biomass damage, high regeneration potential and the world-wide availability of reed biomass could be considered reed biomass as an eco-friendly tool to substitute high cost treatment technologies in the future.
Simulation Analysis of Swine Wastewater Decomposition in Thermophilic Oxic Process Peer-reviewed

K.H.Jeon, M.Nomura, K.Nakano, O.Nishimura

Proceedings of 4th IWA World Water Congress and Exhibition　2004/09
Nutrinet Budget in Spring-Neap Tidal Cycle through the Contineous Observation of Water Quality in Banzu Intertidal Flat Peer-reviewed

M.Nomura, Y.Nakamura

Journal of Water and Waste　45　(11)　851-859　2003/11
Biological Effects on Organic Matter Dynamics in Tidal Flat Peer-reviewed

O.Nishimura, T.Sakamaki, M.Nomura

Proceedings of 6th International Conference on the Mediterranean Coastal Environment, MEDCOAST’03　813-824　2003/10
Structure of a Small Estuarine Tidal Flat Peer-reviewed

T.Sakamaki, Y.Ogawa, M.Nomura, O.Nishimura

Proceedings of 6th International Conference on the Mediterranean Coastal Environment, MEDCOAST’03　805-812　2003/10
Spring-neap tidal variations of residual flow in Tokyo Bay, Japan Peer-reviewed

T Yanagi, M Shimizu, M Nomura, K Furukawa

CONTINENTAL SHELF RESEARCH　23　(11-13)　1087-1097　2003/07

DOI： 10.1016/S0278-4343(03)00102-X 　

ISSN： 0278-4343
Ecological Characteristics of the Fore-shore Type Flat Dominated by Bivalves

Y.Nakamura, M.Nomura

Proceedings of 2nd Japan-Korean Joint Workshop on Tidal Flats, A Special Session of TECHNO-OCEAN 2002　13-16　2002/11
Fluctuations of Water Quality during a Tidal Cycle in Banzu Tidal Flat Peer-reviewed

M.Nomura, Y.Nakamura

Journal of Japan Society on Water Environment　25　(4)　217-225　2002/04
Publisher: Japan Society on Water Environment
DOI： 10.2965/jswe.25.217 　

ISSN： 0916-8958

More details Close

Field observations were carried out in Banzu intertidal flat in Tokyo Bay throughout two days in the summer of 2000, in order to clarify the spatiotemporal fluctuatuions of water quality during a tidal cycle. Concentrations of DO, ON (TN-DIN) or OP (TP-PO₄-P) at the offshore station were higher than those at the onshore station, whereas DIN and PO₄-P had an inverse trend, during submergence. During flood tides, an abrupt increase in the concentrations of DIN and PO₄-P was observed around a shoreline. We constructed a box model, incorporating both the release flux of inorganic nutrients from sediment and the nutrient uptake rate by overlaying water, that were experimentally obtained in situ at each tide. The observed fluctuation of nutrients during ebb tide was well reproduced by the model. However, agreement was poor during flood tide. These results strongly indicate that the increase in nutrient concentrations during flood tide was attributed to the temporally increased effluxes of nutrients from the sediment and/or the physical resuspension of sediments at the shoreline. The mass balance of TP during a tidal cycle showed that the tidal flat acted as a sink of TP (1μmol·m^-2·h^-1) during daytime, in turn, source of TP (30μmol·m^-2·h^-1) during nighttime. The influx of organic N and organic P to the tidal flat and the efflux of inorganic nutrients from the tidal flat were commonly dominant processes when evaluated through a tidal cycle. Possibility that the light intensity during exposure affect the sediment-water flux of nutrients was indicated.
Role of Lower Layer Nutrient for Spatial Distribution of Phytoplankton in Inner Part of Tokyo Bay, Japan Peer-reviewed

T.Okada, K.Nakayama, M.Nomura, K.Furukawa

Proceedings of Coastal Engineering, JSCE　48　1086-1090　2001/11
Publisher:
DOI： 10.2208/proce1989.48.1086 　

ISSN： 0916-7897
Variability of Residual Current in Spring-Neap Tidal Cycle Peer-reviewed

M.Shimizu, T.Yanagi, M.Nomura, K.Furukawa

Oceanography in Japan　10　(5)　413-422　2001/09
Publisher:
DOI： 10.5928/kaiyou.10.413 　

ISSN： 2186-3105
東京湾湾奥部におけるChl-a(植物プランクトン量)空間分布評価モデルに関する検討

岡田知也, 中山恵介, 野村宗弘

港湾技研資料　(1003)　1-21　2001/06
Publisher: 国土交通省港湾技術研究所
ISSN： 0454-4668
Deep-Water Intrusion in Tokyo Bay over Neap and Spring Tide Peer-reviewed

K.Nakayama, T.Okada, M.Nomura, T.Hibino, Y.Hosokawa, K.Furukawa

Proceedings of Coastal Engineering, JSCE　47　421-425　2000/11
Publisher:
DOI： 10.2208/proce1989.47.421 　

ISSN： 0916-7897
東京湾における密度構造の変化と流れ場-黒潮の流れと東京湾- Peer-reviewed

日比野忠史, 野村宗弘, 岡田知也, 古川恵太, 日比野忠史

港湾技術研究所報告　39　(1)　25-55　2000/03/01
Publisher: 国土交通省港湾技術研究所
ISSN： 0454-4641
Application of discrete vortex method modelling for studies of local eddy generation in coastal waters Peer-reviewed

Keita Furukawa, Tadashi Hibino, Munehiro Nomura

Coastal Engineering 2000 - Proceedings of the 27th International Conference on Coastal Engineering, ICCE 2000　276　X3767-3776　2000

DOI： 10.1061/40549(276)294 　
Application of Discrete Vortex Method as Turbulent Modeling Tool on Local Eddy Generation in Coastal Waters Peer-reviewed

K.Furukawa, T.Hibino, M.Nomura

Proceedings of the 1st International Conference on Vortex Methods　129-136　1999/11
The Use of Grand Based High Frequency RADAR Techniques for the Characterization of River Overflows in Tokyo Bay Peer-reviewed

M.Waters, T.Hibino, M.Nomura

Proceedings of 2nd Inter-Regional Conference on Environment-Water　1999/09
The Effect of Pollutant Loading from the Fishery Cultivation on Water Quality in Inner Bay Peer-reviewed

M.Nomura, N.Chiba, K.Xu, R.Sudo

Journal of Japan Society on Water Environment　21　(11)　719-726　1998/11
Publisher: Japan Society on Water Environment
DOI： 10.2965/jswe.21.719 　

ISSN： 0916-8958

More details Close

The purpose of this study was to evaluate the influence of pollutant from Coho Salmon cultivation on water quality through analyzing the data of weather and water quality for several years, and to estimate the adequate loading amount into the Shizugawa Bay locating at Miyagi Prefecture.As a result, it was recognized that COD in the bay was improved from 0.94 mg·l-1 to 0.57 mg·l-1, the delta DO in the bay was improved from 0.86 mg·l-1 to 0.55 mg·l-1, maximum COD in the salmon area changed from 1.13 mg·l-1 to 0.68 mg·l-1 and δDO in the salmon area changed from 1.28 mg·l-1 to 0.69 mg·l-1, respectively, at the end of the cultivation time compared with the large cultivation period.From the results of multiple regression analysis, it was showed that the factors affecting the COD in the salmon area were input loading, temperature and duration of sunshine, whereas the factors affecting δDO in the salmon area were input loading, temperature, duration of sunshine and rainfall, respectively. In particular, it was found that both items were great influenced by the salmon cultivation. In addition, through evaluating the prediction equation for the bottom DO in the salmon area, it was suggested that the annual cultivation amount should be restricted by 4,000 ton·y-1 to prevent the bottom water from the deficient water.
The Role of Seaweed in Purification of Water Quality in Inner Bay Peer-reviewed

M.Nomura, M.Sasa, N.Chiba, H.Sasaki, K.Taniguchi, R.Sudo

Journal of Japanese Association for Coastal Zone Studies　10　(10)　125-136　1998/03
Analysis of Rapid Fluctuation of DO in Shizugawa Bay Peer-reviewed

M.Nomura, N.Chiba, K.Xu, R.Sudo

Proceedings of 6th IAWQ ASIA-PACIFIC REGIONAL CONFERENCE　1139-1150　1997/05
The Formation of Anoxic Water Mass in Shizugawa Bay Peer-reviewed

M.Nomura, N.Chiba, K.Xu, R.Sudo

Bulletin on Coastal Ocenography　33　(2)　203-210　1996/02
Publisher:
ISSN： 1342-2758

More details Close

A survey has been carried out in two innner regions of Shizugawa Bay during the stratified season in 1993 and 1994. One is the oyster farm where DO concentration of bottom water is the lowest in the bay, and the other is the salmon farm where Coho Salmon are cultivated. The influence of cultivation on oxygen consumption was evaluated. From the results obtained, the oxygen consumption rate of bottom water in the oyster farm was found to be 0.67g/m^3/day. This indicates that it may be possible to form anoxic water mass in this area. It was also observed that the anoxic water mass was moved from other regions of the bay. Futhermore, according to the results of sediment trap, the oxygen consumption rate of bottom sediment in the salmon farm is lower than that in the oyster farm. Because the mineralization rate of suspended matter during settling process in the salmon farm is more rapidly than that in the oyster farm.

Show all ︎Show first 5

Misc. 39

アオコの発生する富栄養湖における底質有機物の起源と分解過程の評価

藤林恵, 岡野邦宏, 荒木美穂, 菅原巧太朗, 野村宗弘, 西村修, 宮田直幸

日本水環境学会年会講演集　51st　2017
Evaluation of Water-Bloom Control Effect in Dam Reservoir

M.Nomura

Journal of Japan Society on Water Environment　35(A)　(3)　75-78　2012/03
人工湿地における水質浄化性能の季節安定性評価

千木良純貴, 中野和典, 丸尾知佳子, 千葉信男, 野村宗弘, 相川良雄, 西村修

日本水処理生物学会誌. 別巻 = Journal Japan Biological Society of Water and Waste　(31)　42-42　2011/10/15

ISSN： 0910-6766
道路流出水中の共存条件における各種陰イオンの吸着除去評価

繁泉恒河, 丸尾知佳子, 中尾和典, 野村宗弘, 相川良雄, 西村修

日本水処理生物学会誌. 別巻 = Journal Japan Biological Society of Water and Waste　(31)　10-10　2011/10/15

ISSN： 0910-6766
底生微細藻類の光合成が干潟好気性微生物の代謝に及ぼす影響

阿久津正浩, 慎祐〓, 野村宗弘, 中野和典, 西村修

日本水処理生物学会誌. 別巻 = Journal Japan Biological Society of Water and Waste　(31)　94-94　2011/10/15

ISSN： 0910-6766
Anabaena の休眠細胞に関する生理生態学的研究

矢島悠一, 野村宗弘, 中野和典, 西村修, 一瀬諭

日本水処理生物学会誌. 別巻 = Journal Japan Biological Society of Water and Waste　(31)　77-77　2011/10/15

ISSN： 0910-6766
人工湿地のスタートアップ性能に及ぼす植栽の影響

中野和典, 千木良純貴, 宋海亮, 矢野篤男, 千葉信男, 野村宗弘, 相川良雄, 西村修

日本水処理生物学会誌. 別巻 = Journal Japan Biological Society of Water and Waste　(30)　96-96　2010/10/15

ISSN： 0910-6766
底生微細藻類による細胞外有機物の生産が干潟堆積有機物分解に与える影響

阿久津正浩, 武地修一, 慎祐〓, 野村宗弘, 中野和典, 西村修

日本水処理生物学会誌. 別巻 = Journal Japan Biological Society of Water and Waste　(30)　88-88　2010/10/15

ISSN： 0910-6766
アオコ発生に及ぼす Anabaena spp. の休眠細胞の影響

矢島悠一, 土田幹隆, 野村宗弘, 千葉信男, 中野和典, 西村修

日本水処理生物学会誌. 別巻 = Journal Japan Biological Society of Water and Waste　(30)　14-14　2010/10/15

ISSN： 0910-6766
Effects of dissolved silicon concentration on density and dominant rate of periphyton

Nishimura osamu, Jeon Kyoungho, Lim Doyoung, Nakano Kazunori, Nomura Munehiro, Chiba Nobuo

Annual report of the Society for the Promotion of Construction Engineering　44　25-32　2009/04/01
Publisher: Tohoku University
ISSN： 0288-9994
Development of Environmental Assessment Method for Seagrass(Zostera japonica)Bed Construction

NOMURA Munehiro

Annual report of the Society for the Promotion of Construction Engineering　43　87-92　2008/04/01
Publisher: Tohoku University
ISSN： 0288-9994
Influence of Selective Withdrawal on Water-Bloom Occurrence in Urushizawa Dam Reservoir

NISHIMURA Osamu, NOMURA Munehiro, Nakano Kazunori, CHIBA Nobuo, JEON Kyoungho, TSUBONE Fumiyoshi

Annual report of the Society for the Promotion of Construction Engineering　43　21-30　2008/04/01
Publisher: Tohoku University
ISSN： 0288-9994
The relationship between changes of algae and environmental factors in the Urusizawa reservoir

TSUBONE Fumiyoshi, NOMURA Munehiro, CHIBA Nobuo, NAKANO Kazunori, NISHIMURA Osamu

(27)　19-19　2007/10/15

ISSN： 0910-6766
Evaluation of allelopathic effect using growth characteristics of freshwater microalgae

SHIOIRI Mariko, TAKEDA Fumihiko, CHIBA Nobuo, NOMURA Munehiro, NAKANO Kazunori, NISHIMURA Osamu

(27)　45-45　2007/10/15

ISSN： 0910-6766
Study on Nutrient Removal Ability by Surface Flow Constructed Wetland Utilizing Luffa cylindrica under High Nutrient Loading Rate

TANAKA Yuusuke, CHIBA Nobuo, NOMURA Munehiro, NAKANO Kazunori, NISHIMURA Osamu

(27)　20-20　2007/10/15

ISSN： 0910-6766
Influence of nutrient on allelopathic effect of polyphenols on microalgae

TAKEDA Fumihiko, SHIOIRI Mariko, CHIBA Nobuo, NOMURA Munehiro, NAKANO Kazunori, NISHIMURA Osamu

(27)　88-88　2007/10/15

ISSN： 0910-6766
Characterization and mechanism of sediment carbon dynamics in estuarine tidal flats

Kaiyo monthly　39　(9)　586-592　2007/09
Publisher: 海洋出版
ISSN： 0916-2011
Investigation of Water-Bloom Control Effect based on Characteristics of Water Quality Stratification in Urushizawa Dam Reservoir

NISHIMURA Osamu, NOMURA Munehiro, NAKAMURA Kazunori, CHIBA Nobuo, SHITARA Kazuhiko

Annual report of the Society for the Promotion of Construction Engineering　42　27-35　2007/04/01
Publisher: Tohoku University
ISSN： 0288-9994
脱窒過程における亜硝酸還元速度と硝酸態窒素との関係

石井晴彦, 中野和典, 野村宗弘, 西村修

日本水処理生物学会誌. 別巻 = Journal Japan Biological Society of Water and Waste　(26)　17-17　2006/10/15

ISSN： 0910-6766
褐藻アカモクを材料とした重金属吸着剤

ブンヘンスティチャック, 中野和典, 野村宗弘, 千葉信男, 西村修

日本水処理生物学会誌. 別巻 = Journal Japan Biological Society of Water and Waste　(26)　71-71　2006/10/15

ISSN： 0910-6766
マコモの植栽基盤がハクチョウの摂食及びマコモの成長に与える影響

岩淵藍子, 中野和典, 千葉信男, 野村宗弘, 西村修

日本水処理生物学会誌. 別巻 = Journal Japan Biological Society of Water and Waste　(26)　74-74　2006/10/15

ISSN： 0910-6766
活性汚泥系における硝化細菌の共代謝によるエストロゲンの除去挙動

任勇翔, 中野和典, 野村宗弘, 千葉信男, 西村修

日本水処理生物学会誌. 別巻 = Journal Japan Biological Society of Water and Waste　(26)　44-44　2006/10/15

ISSN： 0910-6766
水面積負荷変動がヘチマ浄化水路に与える影響

千葉信男, 中野和典, 野村宗弘, 西村修, 櫻井一平, 八巻輝子

日本水処理生物学会誌. 別巻 = Journal Japan Biological Society of Water and Waste　(26)　83-83　2006/10/15

ISSN： 0910-6766
Siの濃度変化が河床付着藻類群落に及ぼす影響

林到映, 田庚昊, 阿部早智子, 千葉信男, 野村宗弘, 中野和典, 西村修

日本水処理生物学会誌. 別巻 = Journal Japan Biological Society of Water and Waste　(26)　50-50　2006/10/15

ISSN： 0910-6766
Decomposition Rate Measurement of High-Density Organic Wastes

NISHIMURA Osamu, NAKANO Kazunori, NOMURA Munehiro, CHIBA Nobuo, JEON Kyoungho

Annual report of the Society for the Promotion of Construction Engineering　41　13-18　2006/04/01
Publisher: Tohoku University
ISSN： 0288-9994
蒲生干潟における堆積物輸送解析

幸福智, 野村宗弘, 市村康, 西村修

日本水環境学会年会講演集　40th　2006
Analysis of Water Quality Structure Modeling on Enclosed Bay

SAWAMOTO Masaki, NOMURA Munehiro, SATO Hironobu, TAKAHASHI Kenya

Annual report of the Society for the Promotion of Construction Engineering　40　21-30　2005/04/01
Publisher: Tohoku University
ISSN： 0288-9994
Applicability of reed biomas as an adsorbent material for heavy metal removal

NISHIMURA Osamu, NAKANO Kazunori, NOMURA Munehiro, CHIBA Nobuo, SOUTHICHAK Bounheng

Annual report of the Society for the Promotion of Construction Engineering　40　11-16　2005/04/01
Publisher: Tohoku University
ISSN： 0288-9994
蒲生干潟における懸濁物質輸送特性

野村宗弘, 幸福智, 中野和典, 西村修

土木学会年次学術講演会講演概要集(CD-ROM)　60th　(Disk 2)　2005
生態工学の可能性と展望

西村修, 野村宗弘

日本水処理生物学会誌. 別巻 = Journal Japan Biological Society of Water and Waste　(24)　11-12　2004/10/15

ISSN： 0910-6766
亜硝酸還元過程における動力学的パラメータの決定

増田周平, 野村宗弘, 中野和典, 西村修, 水落元之, 稲森悠平

日本水処理生物学会誌. 別巻 = Journal Japan Biological Society of Water and Waste　(24)　100-100　2004/10/15

ISSN： 0910-6766
排水処理水放流水路に生息する藻類のエストロゲン動態への影響

大堀雅人, 任勇翔, 千葉信男, 野村宗弘, 中野和典, 西村修

日本水処理生物学会誌. 別巻 = Journal Japan Biological Society of Water and Waste　(24)　112-112　2004/10/15

ISSN： 0910-6766
温度と含水率依存性分解速度定数に基づくシミュレーションによる高温好気処理の高効率化解析

田庚昊, 中野和典, 野村宗弘, 西村修, 水落元之, 稲森悠平

日本水処理生物学会誌. 別巻 = Journal Japan Biological Society of Water and Waste　(24)　45-45　2004/10/15

ISSN： 0910-6766
コアマモと二枚貝の共存する場の特徴について

大谷崇, 野村宗弘, 千葉信男, 中野和典, 西村修

日本水処理生物学会誌. 別巻 = Journal Japan Biological Society of Water and Waste　(24)　50-50　2004/10/15

ISSN： 0910-6766
赤潮藻類 Skeletonema costatum を用いたバイオアッセイによる褐藻アカモク藻場のアレロパシー効果の検証

武田文彦, 中野和典, 千葉信男, 野村宗弘, 西村修

日本水処理生物学会誌. 別巻 = Journal Japan Biological Society of Water and Waste　(24)　49-49　2004/10/15

ISSN： 0910-6766
干潟における堆積物-直上水間の懸濁物質の輸送に及ぼす底質性状の影響

幸福智, 野村宗弘, 坂巻隆史, 中野和典, 西村修

日本水処理生物学会誌. 別巻 = Journal Japan Biological Society of Water and Waste　(24)　51-51　2004/10/15

ISSN： 0910-6766
Nutrients removal characteristics of Spirogyra sp. coupled with water purification plants

NISHIMURA Osamu, NAKANO Kazunori, NOMURA Munehiro, CHIBA Nobuo, OBUNAI Chie

Annual report of the Society for the Promotion of Construction Engineering　39　29-35　2004/04/01
Publisher: Tohoku University
ISSN： 0288-9994
Analysis of treatment ability of Luffa cylindrica planting water purification system

NISHIMURA Osamu, YAMADA Kazuhiko, NOMURA Munehiro, CHIBA Nobuo, SAKAMAKI Takashi, KAWASAKI.Tuyoshi

Annual report of the Society for the Promotion of Construction Engineering　38　23-30　2003/04/01
Publisher: Tohoku University
ISSN： 0288-9994
淡水二枚貝のろ水速度に及ぼす濁質濃度の影響について

千葉信男, 野村宗弘, 西村修

日本水処理生物学会誌. 別巻 = Journal Japan Biological Society of Water and Waste　22　94-94　2002/10/15

ISSN： 0910-6766

Show all ︎Show first 5

Books and Other Publications 4

Newest Microbiology for Environmental Purification

O.Nishimura, K.Jeon, M.Nomura

講談社サイエンティフィク　2008/12/10

ISBN: 9784061552241
環境工学の新世紀

R.Sudo, M.Nomura

技報堂出版　2008/02/25

ISBN: 9784765534215
水環境ハンドブック

M.Nomura, O.Nishimura

朝倉書店　2006/10/30

ISBN: 4254261497
日本の水環境2 東北編

M.Nomura, O.Nishimura, R.Sudo

技報堂出版　2000/04/10

ISBN: 4765531643

Presentations 3

人為的負荷源のない流域におけるアオコ発生について

日本水処理生物学会第43回大会水道分野研究集会　2006/11/05
盤洲干潟周辺海域における水質観測と潮汐に伴う干潟直上水の栄養塩収支

小沼晋, 栗木秀治, 桑江朝比呂, 三好英一, 中村由行

第5回日本水環境学会シンポジウム　2002/09
盤洲干潟における潮汐に伴う直上水の水質変化

小沼晋, 栗木秀治, 桑江朝比呂, 三好英一, 中村由行

第4回日本水環境学会シンポジウム　2001/09

Research Projects 14

外来種サキグロタマツメタからアサリを保全するための対策技術の開発

野村宗弘

Offer Organization: 日本学術振興会

System: 科学研究費助成事業

Category: 基盤研究(C)

Institution: 東北大学

2024/04/01 - 2027/03/31
Monitoring ecological processes in inner bay systems under environmental changes based on analyses for biomolecular composition of particulate organic matter

SAKAMAKI TAKASHI

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: Tohoku University

2017/04/01 - 2021/03/31

More details Close

Field data collections and experiments were conducted to enhance understanding of spatiotemporal variations of physical environments and chemical compositions of particulate organic matter (POM) in Shizugawa Bay. Based on analyses of long-term high-resolution reanalysis datasets, some notable processes, such as long-term trends and stratifications, in the study bay were also found out. Our results support that the fatty acid composition of POM can be a useful indicator to capture responses of primary production, respiration, and oxygen consumption to environmental changes in inner bay systems.
Analyses of food web and biodiversity mechanism of Lake Taihu where the occurrence of water bloom is normalized

Nishimura Osamu, Okano Kunihiro, Maruo Chikako, Tanaka Nobuyuki

Offer Organization: Japan Society for the Promotion of Science

System: Grants-in-Aid for Scientific Research

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

Institution: Tohoku University

2016/04/01 - 2019/03/31

More details Close

In this study, it is to clarify how aquatic animals acquire essential fatty acids necessary for survival and reproduction while cyanobacteria predominately over other algae in Lake Taihu. As a result, it was suggested that cyanobacteria might not be an important food source for all aquatic animals appearing in Lake Taihu, but it was important for shrimp. In addition, it was revealed that fish such as Hypomesus nipponensis ingested carbon of cyanobacteria at Lake Hachiro during the occurrence of water bloom. Furthermore, it was revealed that the micrometazoan Aeolosoma can reproduce itself by synthesizing essential fatty acids such as eicosapentaenoic acid.
Development of quantification method of buried carbon derived from seaweed using fatty acid biomarker

NISHIMURA Osamu, MARUO Chikako

Offer Organization: Japan Society for the Promotion of Science

System: Grants-in-Aid for Scientific Research

Category: Grant-in-Aid for Challenging Exploratory Research

Institution: Tohoku University

2016/04/01 - 2018/03/31

More details Close

It is unclear how much marine plant-derived organic carbon remains in the actual waters after thousands of years. In this study, fatty acids in the core sample of sediments of Lake Ogawara was analyzed for the purpose of estimating the residual ratio of higher plant-derived organic carbon. LCFAs, biomarker fatty acids of plants, were detected in the sedimentary layer about 9000 years ago. In addition, carbon isotopic ratio of fatty acid C26:0 was used to separate organic carbon into marine and terrestrial origins. Here, the terrestrial and marine plants were represented by Manchurian wild rice and eelgrass, respectively. As a result, the estimated residual organic carbon content of the marine plant was close to the estimated residual rate of 40% in the previous study. This result suggests that carbon stable isotopic analysis of fatty acids in sediments can reveal buried carbon content from seaweed.
Development of rational eelgrass regeneration method to evaluate from outliers of HSI model

Nomura Munehiro

Offer Organization: Japan Society for the Promotion of Science

System: Grants-in-Aid for Scientific Research

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

Institution: Tohoku University

2015/04/01 - 2018/03/31

More details Close

The environments inside and outside an actual seagrass bed were investigated to understand the differences between these environments and the role of the seagrass bed in such differences. This study revealed that the sediment particle size in the seagrass bed is larger than that outside the seagrass bed. Further, the environment is suitable for the growth of seagrass. In addition, sedimentation of suspended matter was observed inside the seagrass bed. On the other hand, outside the seagrass bed, turbidity tended to increase with low tides, and it was inferred that movement of suspended solids due to tidal current is restricted inside the seagrass bed. These results indicate that the seagrass creates a suitable environment that facilitates its own abundant growth.
Analysis of germination characteristics of Anabaena akinete in the bottom sediment for the blue-green algae inhibition

NOMURA MUNEHIRO

Offer Organization: Japan Society for the Promotion of Science

System: Grants-in-Aid for Scientific Research

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

Institution: Tohoku University

2012/04/01 - 2015/03/31

More details Close

The algal bloom causes deterioration of water qualities such as taste and odor. Cyanobacteria Anabaena is one of the main species which cause algal bloom and musty odor problem. Although Anabaena has a mechanism to make akinete (resting cell) to stand bad environment, the influence of akinete on algal bloom formation is still unclear. In this study, the condition of water bloom in Urushizawa Dam was investigated using the yearly data collections, field study and simulation analysis about akinete germination of Anabaena. As the results, it was suggested that germination of Anabaena is triggered by lowering the water level in June, and also suggested that the length of daylight in this time has correlation with biomass of Anabaena in the summer. And it was also suggested that keeping the water level high can inhibit germination of Anabaena.
Investigation of benthic environment for recovery of ecological function in Lake Taihu.

NISHIMURA Osamu, NOMURA Munehiro, FUJIBAYASHI Megumu

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: Tohoku University

2012/04/01 - 2015/03/31

More details Close

The origin of sedimentary organic carbon and assimilated food source of dominant benthic animals were investigated with fatty acid biomarker and stable carbon isotope in hyper-eutrophic shallow lake, Lake Taihu in China. While suspended matter in Lake Taihu contained much more cyanobacteria derived fatty acid biomarker than higher plants, higher-plant-derived fatty acid biomarker was dominant in sediments from whole of the lake in summer and winter. Fatty acid analysis revealed that dominant benthic animals mainly assimilated cyanobacteria not higher plants.The consumption of cyanobacteria by benthic animals may one of the possible explanation for accumulation of higher-plant-derived organic carbon in sediments from Taihu.
Development of constructed wetland to mitigate ecological risk by chemicals in run-off water

NAKANO Kazunori, NISHIMURA Osamu, NOMURA Munehiro

Offer Organization: Japan Society for the Promotion of Science

System: Grants-in-Aid for Scientific Research

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

2010 - 2012

More details Close

Ecological impact of aquatic ecosystem by chemicals in run-off water has been worried. Thus in this study, potential filter media for passive treatment of run-off were screened. As a consequence, hydrotalcite was selected. Then adsorption characteristics of Perfluorooctane sulfonate was evaluated. The effectiveness of passive treatment proposed in this study was demonstrated by full scale experiment conducted at first-flush treatment wetland which is actual passive treatment facility treating road run-off water in Kusatsu city of Shiga prefecture.
Effect of Benthic Microalgae on Microbial Loop in Intertidal Flat Ecosystem

NISHIMURA Osamu, NOMURA Munehiro

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: Tohoku University

2009 - 2011

More details Close

Laboratory incubation experiments were carried out to evaluate the effect of benthic microalgal photosynthesis on microbial loop in intertidal flat ecosystems. The results showed that the decomposition of long chain fatty acids, which are comparatively refractory components in sediment organic matter, was promoted resulting from benthic microalgal photosynthesis. Furthermore, the stable isotope ratios of not only bacterial fatty acid but also diatom fatty acid were decreased clearly. Therefore, it was considered that benthic microalgal photosynthesis enhanced detritus food chain.
Development of habitat suitability evaluation model for rationally promoting the adaptive management in nature restoration

NOMURA Munehiro

Offer Organization: Japan Society for the Promotion of Science

System: Grants-in-Aid for Scientific Research

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

Institution: Tohoku University

2009 - 2010

More details Close

Seagrasses contribute greatly to the biodiversity of coastal areas. However, there have been big concerns of global warming that may affect on marine organisms, especially the seagrasses. In this study, Zostera japonica which inhabits in intertidal and shallow subtidal zones was focused on, since the information on the impact of global warming on this seagrass is very limited. The photosynthetic and respiration rates in Z. japonica on the various water temperature and photon flux density were measured and modeled. By using developed model and the IPCC A1B scenario the effect of global warming on seagrasses was investigated, and it was estimated Z. japonica will be strongly influenced by the sea level rise than the water temperature increase in the future.
Research on bottom sediment environment necessary for living of demersal fishes and bivalves to purify water of the lakes and marshes

TANAKA Hitoshi, KIMOCHI Yuzuru, KANAZAWA Hikaru, NOMURA Munehiro

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: Center for Environmental Science in Saitama

2006 - 2008
Evaluation of eutrophication control function of shallow sea area

NISHIMURA Osamu, NAKANO Kazunori, NOMURA Munehiro

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: Tohoku University

2005 - 2007

More details Close

In order to improve the responsibility of inter-city transport facility plan to cancellation and delay risks, especially airports in non metropolitan area, where automobiles are mainly used for access measure, the following researches were conducted in these three years. 1. Measuring automobile traffic flows on routes entering airport: To grasp the behavior of airport users in time dimension, automobile traffic flows around Oita, Sendai and Hiroshima Airports were measured by portable traffic counters, covering also the case of cancellation or delays of flights. 2. Analysis of behavioral changes by cancellation or delay: Independent Component Analysis method was applied to the above measured traffic data and grasp some typical change of behavior due to cancellation and delays at Hiroshima. 3. pre-information of the flight cancellation and delay: Average arrival time to the airport calculated through the traffic flow data, and geographical distribution of trip origins are considered to estimate the required timing fpre-information of flight cancellation and delay. 4. Conflicts among the stakeholders of terminal facility planning: In order to avoid the delay of planning process due to the conflicts among the stakeholders, a typical facility planning process is divided into sub-planning process based on the pre-determined unique quantity of traffic, based on non-delay, non-cancellation basis. 5. Improvement of planning process aiming to be risk-responsive: We proposed a new process of planning by adding performance check process in case of cancellation or severe delays. Inddependent Component Analysis method was applied to historical flight time data, in order to pick up several typical delay patterns.
浅海生態系再生のための干潟・藻場のネットワーク解析

野村宗弘

Offer Organization: 日本学術振興会

System: 科学研究費助成事業

Category: 若手研究(B)

Institution: 東北大学

2005 - 2006

More details Close

コアマモは潮間帯にパッチ状に生育する特徴を持った海草であり,コアマモ藻場が干潟と藻場の機能を融合する空間と捉えられることから研究対象として選定した.コアマモの生育状況および環境条件を明らかにするとともにコアマモ群落が底生動物相を豊富化する機構について検討を行った. コアマモの生育状況及び環境条件潮間帯の中でも冠水時間の長い低潮帯においてバイオマス量が多いことが示され,地上部は初夏に繁茂し,冬季に減少するが,地下部は年間を通じて変動が少ないことがわかった.また,これまでの研究において中央粒径0.005mm(シルト・粘土含有率が4%以上)の砂泥質で生育すると報告されていたが,本研究から中央粒径0.18mm(シルト・粘土含有率0.001%)の砂質でも生育可能であることが明らかとなった. コアマモ群落と底生動物の関係多毛類の個体数と種類数は裸地よりも藻場の方で多く,地下部バイオマスと有意な正の相関を示した.また,底生動物の生息個体数は同じ底質の有機物量であっても藻場の方で多いことがわかった.これは有機物の増加が直接的に底生動物相の豊富化を招いているのではなく,コアマモの存在に依存している可能性が示され,コアマモによる干潟堆積物への有機物供給が餌料の面で多毛類の生育環境を改善していると考えられた. さらに甲殻類の個体数と種類数は,裸地よりも藻場の方で多く,株数密度と有意な正の相関を示すことから,その要因は林冠構造による生息環境改善効果によるものと推測された. また,二枚貝稚貝の付着基盤として,コアマモの重要性が示された.
栄養塩吸収特性が異なる植物種の組み合わせによる植生浄化技術の高度化

中野和典, 西村修, 野村宗弘

Offer Organization: 日本学術振興会

System: 科学研究費助成事業

Category: 萌芽研究

Institution: 東北大学

2004 - 2005

More details Close

本研究は、これまで見落とされてきた糸状藻類Spirogyra sp.の有効性を発掘し、植生浄化水路において異なる栄養塩吸収特性を持つ植物種を組み合わせることの有用性および栄養塩吸収特性に基づいて植物の配置場所を最適化することの有用性を明らかにすることを目的とした.本年度における研究成果を以下にまとめた. 1.糸状藻類や雑草の影響がない高等植物(ヘチマ)単独での浄化性能を実証するために,水面を遮光した植栽浄化水路を休耕田に設置し,遮光しなかった場合との比較を行った.その結果,雑草等まで含めた植物バイオマスの生成量にはあまり差がないにもかかわらず,水質浄化性能は遮光した方が明らかに上回る結果となった.これはSSおよびリンの沈殿が遮光系においてより促進された結果であることが分かった. 2.水路に発生した植物根の全長測定により,遮光により根長が7倍増加しており,これが沈殿を促進し水質浄化性能に貢献していることが明らかとなった. 3.本年度に設置した植生浄化水路には,遮光の有無に関わらず想定していた糸状藻類が発生しなかった.その原因は,遮光系で得られた高い水質浄化性能に合わせて水面積負荷を増加させたことにあると考えられ,糸状藻類の発生の限界となる流速が存在することが示唆された. 4.植生浄化水路における糸状藻類の水質浄化性能の確認が行えなかったため,初年度の実験室でのベンチスケール実験で得た浄化速度式を利用して,水面を遮光した植栽浄化水路の下流部に糸状藻類植栽区を設けた場合に期待できる水質浄化性能のシミュレーションプログラムを作成した.本シミュレーションプログラムにより,糸状藻類や高等植物を単独で利用するケースとこれらを組み合わせたケースそれぞれが,どのような条件(流入負荷条件,目標水質,植生面積)に適しているのかを明らかにすることができた.

Show all Show first 5

Social Activities 1

海環境と生物および沿岸環境修復技術に関するシンポジウム

2005/04 - Present

More details Close

委員

Other 4

浅い閉鎖性水域の底質環境形成機構の解析と底質制御技術の開発

More details Close

本研究の目的は，浅い閉鎖性水域の底質制御技術の確立にある．このため，砂地，泥地など底質環境特性の異なる場を選定し，流動と水質・底質・底生生物のモニタリングを行い，それらの関係を解析して統計モデルを構築する．また，流動場を三次元で計算し，乱流パラメーターと底質の有機物含有率の関係を定式化し，底質の有機物含有率の予測可能なモデルを構築する．そして，導水などによる流動の変化がもたらす底質改善効果を予測し，実験的に検証する．
起源の異なる有機物供給に対する河口干潟の堆積物有機物動態及び生態系応答に関する研究

More details Close

汽水域に存在する河口干潟は多種多様な生物の生息空間であり，様々な機能が成立している生態学的に重要な場所である．また，干潟堆積物中の有機物量は底生生物相に影響を与えることから底生生態系を評価するうえで重要な指標とされる．ここで干潟堆積有機物の質(起源)によって，堆積物の生物分解性に差が生じて底質環境や食物網の違いから底生生物相への影響が考えられることから，干潟堆積物形成に関わる有機物動態を評価していくうえで質を考慮する必要がある．これまで堆積有機物の量のみならず質に着目して有機物動態や生態系応答を評価した研究例は少ない．そこで本研究では，起源の異なる有機物供給に対する干潟堆積有機物の動態解析や干潟生態系応答に関する評価を行うことを目的とする．
海草コアマモ場造成のための環境評価手法の開発

More details Close

人工干潟の生息生物の種類数，個体数が少ないといった問題に対してコアマモ場の創出が有効であると考えられているが，コアマモの生育環境に関する知見は乏しい．本研究では，異なる干出時間，底質粒径の条件下でコアマモの室内育成実験を行い，生育の違いを比較した．その結果，コアマモは非干出域で生長がよいことがわかった．また，底質粒径はコアマモの生育に直接的な影響を与えないことが示唆された．
閉鎖性湾域における外的環境変動が内湾環境に及ぼす影響と応答機構の解明に関する研究

More details Close

沿岸域開発に対する環境アセスメントが義務づけられ、今後、技術開発に対する有効な判断をするためには、実現象を正しく把握しておく必要がある。本研究では内湾域を対象とした水質の長期連続観測を実施するとともに、短波海洋レーダおよび超音波流速計等を用いて広範囲な流れ場の把握を行う。さらに湾域の物質輸送が評価できるモデルを通じて、浅海域による水質改善効果の評価ならびに人工干潟・藻場の適切な配置問題への提言を目指す。