Research field (4)：
Environmental impact assessment
, Environmental dynamics
, Space and planetary science
, Ecology and environmental science
Research theme for competitive and other funds (40)：
2021 - 2024 Vulnerability of bacterial community to antibiotics in aquatic environments and its effect on biogeochemical processes
2020 - 2023 海洋細菌による膜小胞を介した微生物炭素ポンプの炭素フローの解明
2019 - 2021 The effect of antibiotics on the bacterial community composition and the related biogeochemical cycle
2017 - 2019 Examination on the microbial carbon pump process in soil ecosystem - a key process of long-term carbon isolation
2016 - 2019 Effect of ocean acidification on the marine bacterial microbial carbon pump
2015 - 2017 Photochemical reaction and stability of marine fluorescent dissolved organic matter - a key process of bacterial long-term isolation of carbon
2012 - 2016 Characteristic feature of ocean acidification in coastal area and its effect on microalgae
2008 - 2011 Effects of Ocean Acidification on marine ecosystem
2008 - 2011 海洋酸性化の実態把握と微生物構造・機能への影響評価に関する研究
2010 - 2011 Contribution of chlorophyll derivatives in ocean organic matter pool-evaluation by comprehensive method
2007 - 2009 Dynamics of marine humic-like substances and their roles in marine carbon cycle
2003 - 2004 Production process of refractory marine dissolved organic matter by marine bacteria ; Experimental analyses using bacteria-specific D-amino acids.
2002 - 2004 Identification of semi-refractory marine dissolved organic matter with life span from a half to one year.
2003 - 2003 大型海藻による溶存態有機物の生成と沿岸物質循環に対する影響
2001 - 2002 海洋基礎生産と富栄養化におよぼす大気降下物の影響評価
2000 - 2001 河畔湿地地下水でみられる低硝酸性窒素濃度形成機構
2001 - Effect of the Atmospheric Precipitation on the Marine Primary Production
1999 - 2000 Study on the relationship between light intensities in water and photo-degradation of dissolved organic matter.
1999 - 2000 FACTORS CONTRORING THE EFFICIENCY OF THE BIOLOGICAL PUMP IN THE COASTAL EUPHOTIC ZONE-ANALYSIS FROM BIOLOGICAL, ELEMENTAL AND ORGANIC MOLECULES-
1999 - 2000 Efficiency of Biological Pump in Coastal Region
2000 - Production of Refractory Dissolved Organic Matter
1997 - 1999 Bio phile element composition and species composition of marine phytoplaskton
1996 - 1997 Highly sensitive analysis of geochemical cycles of nitrous oxide and methane through isotope tracers
1996 - 1996 海洋有光層に存在する懸濁態・溶存態非生物性有機物の組成とその安定性
1994 - 1995 The role of dissolved organic matter in marine carbon cycle elucidation by production and turnover rates
1994 - 1994 海洋における環境指標性有機化合物の開発に関する研究
1993 - 1994 Experimental Studies on Marine Green House Effect Gases
1991 - 1993 CHEMICAL AND GEOCHEMICAL STUDIES ON ORGANIC MATTER IN THE OCEAN
1991 - 1992 Flux of organic matter from phytoplankton to bacteria
1991 - 1991 海洋表層で生産される有機物の組成に関する地球化学的研究
1988 - 1989 水圏基礎生産者の増殖と代謝
1988 - 1989 海洋における沈降粒子の動態とその物質循環における役割に関する研究
1988 - 1988 海洋における沈降粒子の動態とその物質循環における役割に関する研究
1987 - 1987 海洋における沈降粒子の動態とその物質循環における役割に関する研究
1985 - 1986 Analysis of production processes of lower trophic levels in upwelling ecosystem
Production and transport of organic material in coastal area.
Composition and Production of Dissolved Organic Matter in the Sea.
Eutrophication of Lake and Biological Productivity
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Papers (88)：
Shigeki Wada, Yuhi Satoh, Takeo Hama. Massive loss and microbial decomposition in reproductive biomass of Zostera marina. Estuarine, Coastal and Shelf Science. 2022. 107986-107986
Inoue Tomoki, Suzuki Risa, Kashiwazaki Hiroto, Wada Shigeki, Midorikawa Takashi, Ishii Masao, Sasano Daisuke, Kosugi Naohiro, hama Takeo. Effect of Ocean Acidification on Microbial Population and Function -Phytoplankton Composition-. Abstracts of Annual Meeting of the Geochemical Society of Japan. 2012. 59. 0
Kashiwazaki Hiroto, Suzuki Risa, Inoue Tomoki, Midorikawa Takashi, Ishii Masao, Sasano Daisuke, Kosugi Naohiro, Hama Takeo, Wada Shigeki. Effect of Ocean Acidification on Microbial Population and Function - 3.Production of FDOM. Abstracts of Annual Meeting of the Geochemical Society of Japan. 2012. 59. 0
Suzuki Risa, Kashiwazaki Hiroto, Inoue Tomoki, Wada Shigeki, Midorikawa Takashi, Ishii Masao, Sasano Daisuke, Kosugi Naohiro, Hama Takeo. Effect of Ocean Acidification on Microbial Population and Function 1. Primary Production Processes. Abstracts of Annual Meeting of the Geochemical Society of Japan. 2012. 59. 0
Wada Shigeki, Komori Marina, Hama Takeo. Release of bottom-drifting algae and its role as organic carbon source to benthic ecosystem in coastal environment. Abstracts of Annual Meeting of the Geochemical Society of Japan. 2012. 59. 0
Effects of ocean acidification on phytoplankton community and biogeochemical processes
(JAMBIO International Symposium 2016)
溶存態有機物の代謝と安定性
(日本地球化学会年会 2016)
Education (3)：
1978 - 1981 Nagoya University Graduate School, Division of Natural Science Geochemistry
1976 - 1978 Nagoya University
1972 - 1976 東京教育大学 理学部 生物学科植物学専攻
Professional career (1)：
理学博士 (名古屋大学)
Work history (3)：
2006/04 - University of Tsukuba Faculty of Life and Environmental Sciences
1998/03 - 2006/03 University of Tsukuba Institute of Biological Sciences
1982/10 - 1998/02 Nagoya University Research Associate
Committee career (1)：
日本アイソトープ協会 安定同位元素専門委員会委員
Awards (1)：
1997 - 生態学琵琶湖賞
Association Membership(s) (6)：
The Japanese Society of Limnology
, GEOCHEMICAL SOCIETY OF JAPAN
, THE OCEANOGRAPHIC SOCIETY OF JAPAN
, JAPAN RADIOISOTOPE ASSOCIATION
, International Society of Limnology
, Association for the Sciences of Limnology and Oceanography
