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Construction of "Lake Biwa standard models" for the 21st century-Predict models on the basis of universal truth of physics, chemistry and biology-

Research Project

Project/Area Number 10308025
Research Category

Grant-in-Aid for Scientific Research (A).

Allocation TypeSingle-year Grants
Section一般
Research Field Environmental dynamic analysis
Research InstitutionKYOTO UNIVERSITY

Principal Investigator

NAKANISHI Masami  Kyoto University, Center for Ecological Research, Professor, 生態学研究センター, 教授 (60025434)

Co-Investigator(Kenkyū-buntansha) NAKAYAMA Ei-ichiro  University of Shiga Prefecture, School of Environmental Science, Professor, 環境科学部, 教授 (50108982)
WADA Eitaro  Kyoto University, Center for Ecological Research, Professor, 生態学研究センター, 教授 (40013578)
KAWABATA Zen-ichiro  Kyoto University, Center for Ecological Research, Professor, 生態学研究センター, 教授 (80108456)
URABE Jotaro  Kyoto University, Center for Ecological Research, Associate Professor, 生態学研究センター, 助教授 (50250163)
KIMOTO Takashi  Research Institute of Oceano-Chemistry, Senior Researcher, 研究主事
熊谷 道夫  滋賀県琵琶湖研究所, 専門研究員 (40234512)
山村 則男  京都大学, 生態学研究センター, 教授 (70124815)
東 正彦  京都大学, 生態学研究センター, 教授 (40183917)
Project Period (FY) 1998 – 2000
Project Status Completed (Fiscal Year 2000)
Budget Amount *help
¥35,800,000 (Direct Cost: ¥35,800,000)
Fiscal Year 2000: ¥4,700,000 (Direct Cost: ¥4,700,000)
Fiscal Year 1999: ¥8,100,000 (Direct Cost: ¥8,100,000)
Fiscal Year 1998: ¥23,000,000 (Direct Cost: ¥23,000,000)
KeywordsLake Biwa / ecosystem models / plankton communities / food webs / multi-diffusive convection model / vertical distribution / carbon, nitrogen and phosphorus / matter cycling / モデル / 環境変動 / 生態系 / 物理・化学・生物相互作用 / 生物・化学・物理相互作用 / 水温躍層 / 生物・化学・物理成分日内変動 / 溶存酸素極小層 / 琵琶湖予測モデル
Research Abstract

In physical years 1998 and 1999, to obtain basic data on plankton communities available for construction of "Standard Models of Lake Ecosystems", we had field observations of spatio-temporal changes in biomass and grazing rates of planktonic organisms-virus, bacteria, picoalgae, nanoalgae, microalgae, heterotrophic nanoflagellates and crustaceans-in Lake Biwa. Further, we detected vertical distribution patterns of pico, nano and micro planktonic algae intertwining with diffusive convection of water through surveys from May to December 1999 at one week intervals.
In a physical year 2000, five models of lake ecosystems were constructed on the basis of physico-chemical and biological data obtained.
1. "A multi-diffusive convection model of lake ecosystems"
It was shown that the double-diffusive convection consisting of heat drived by particle precipitation and suspended matter is a multi-diffusive convection system which many kinds of substances such as particles and dissolved matter circulate in lakes.
2. "A model of seasonal changes in vertical distribution of water temperature and nutrients in Lake Biwa" Seasonal changes in vertical distribution of water temperature and nutrients were reappeared by constructing a new model in conbination of momentum equation with heat transfer and turbulent diffusion equations.
3. "A model of matter cycle in lake ecosysterns" was built on the basis of behaviors of carbon, nitrogen and phosphorus through food webs in plankton communities.
The rest are "A model of vertical distribution of phytoplankton" inducing turbulent diffusion item into a light-nutrient model and "A coexistence model of phytoplankton and bacteria in microbial loop".

Report

(4 results)
  • 2000 Annual Research Report   Final Research Report Summary
  • 1999 Annual Research Report
  • 1998 Annual Research Report
  • Research Products

    (34 results)

All Other

All Publications (34 results)

  • [Publications] Nakanishi,M.,Sekino,T.,Kimoto,T.,Tsuda,R.,& Kumagai,M.: "A hypothesis on formation of the subsurface chlorophyll maximum observed in Lake Biwa in summer of 1994."Jpn.J.Limnol.. 60. 125-137 (1999)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] Gurung,T.B.,Urabe,J.& Nakanishi,M.: "Regulation of the relationship between phytoplankton Scenedesmus acutus and heterotrophic bacteria by balance of light and nutrients."Aquat.Microb.Ecol.. 17. 27-35 (1999)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] Urabe,J.,Sekino,T.,Nozaki,K.,Tsuji,A.,Yoshimizu,C.,Kagami,M.,Koitabashi,T.,Miyazaki,T.& Nakanishi,M.: "Light, nutrients and primary productivity in Lake Biwa : an evaluation of the current ecosystem situation."Ecological Research. 14. 233-242 (1999)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] Genkai-Kato,M.,Nozaki,K.,Mitsuhashi,H.,Kohmatsu,Y.,Miyasaka,H.and Nakanishi,M.: "Push-up response of stonefly larvae in low-oxygen conditions."Ecological Research. 15. 175-179 (2000)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] Urabe,J.,Gurung,T.B.,Yoshida,T.,Sekino,T.,Nakanishi,M.,Maruo,M.and Nakayama,E.: "Diel changes in phagotrophy by Cryptomanas in Lake Biwa."Limnol.Oceanogr.. 45. 1558-1563 (2000)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] Gurung,T.B.,Nakanishi,M.and Urabe,J.: "Seasonal and vertical difference in negative and positive effects of grazers on heterotrophic bacteria in Lake Biwa."Limnol.Oceanogr.. 45. 1689-1696 (2000)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] 中西正己: "地球環境学4「水・物質循環系の変化」(pp.229-265地域開発・都市化と水・物質循環の変化)"岩波書店. 343 (1999)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] Nakanishi, M., Sekino, T., Kimoto, T., Tsuda, R., & Kumagai, M.: "A hypothesis on formation of the subsurface chlorophyll maximum observed in Lake Biwa in summer of 1994."Jpn. J.Limnol.. 60. 125-137 (1999)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] Gurung, T.B., Urabe, J.& Nakanishi, M.: "Regulation of the relationship between phytoplankton Scenedesmus acutus and heterotrophic bacteria by balance of light and nutrients."Aquat. Microb. Ecol.. 17. 27-35 (1999)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] Urabe, J., Sekino, T., Nozaki, K., Tsuji, A., Yoshimizu, C., Kagami, M., Koitabashi, T., Miyazaki, T.& Nakanishi, M.: "Light, nutrients and primary productivity in Lake Biwa : an evaluation of the current ecosystem situation."Ecological Research. 14. 233-242 (1999)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] Genki-Kato, M., Nozaki, K., Mitsuhashi, H., Kohmatsu, Y., Miyasaka, H.and Nakanishi, M.: "Push-up response of stonefly larvae in low-oxygen conditions."Ecological Research. 15. 75-179 (2000)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] Urabe, J., Gurung, T.B., Yoshida, T., Sekino, T., Nakanishi, M., Maruo, M.and Nakayama, E.: "Diel changes in phagotrophy by Cryptomanas in Lake Biwa."Limnol. Oceanogr.. 45. 1558-1563 (2000)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] Gurung, T.B., Nakanishi, M.and Urabe, J.: "Seasonal and vertical difference in negative and positive effects of grazers on heterotrophic bacteria in Lake Biwa."Limnol. Oceanogr.. 45. 1689-1696 (2000)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] Nakanishi, M.: "Matter cycle under community development and urbanization. In : Changes in matter cycle systems (eds. by E.Wada and T.Yasunari)."Chikyu-Kankyogaku. Iwanami.. 4. 229-265 (1999)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] Nakanishi,M.,Sekino,T.,Kimoto,T.,Tsuda,R.,& Kumagai,M.: "A hypothesis on formation of the subsurface chlorophyll maximum observed in Lake Biwa in summer of 1994."Jpn.J.Limnol.. 60. 125-137 (1999)

    • Related Report
      2000 Annual Research Report
  • [Publications] Gurung,T.B.,Urabe,J.& Nakanishi,M.: "Regulation of the relationship between phytoplankton Scenedesmus acutus and heterotrophic bacteria by balance of light and nutrients."Aquat.Microb.Ecol.. 17. 27-35 (1999)

    • Related Report
      2000 Annual Research Report
  • [Publications] Urabe,J.,Sekino,T.,Nozaki,K.,Tsuji,A.,Yoshimizu,C.,Kagami,M.,Koitabashi,T.,Miyazaki,T.& Nakanishi,M.: "Light, nutrients and primary productivity in Lake Biwa : an evaluation of the current ecosystem situation."Ecological Research. 14. 233-242 (1999)

    • Related Report
      2000 Annual Research Report
  • [Publications] Genkai-Kato,M.,Nozaki,K.,Mitsuhashi,H.,Kohmatsu,Y.,Miyasaka,H.and Nakanishi,M.: "Push-up response of stonefly larvae in low-oxygen conditions."Ecological Research. 15. 175-179 (2000)

    • Related Report
      2000 Annual Research Report
  • [Publications] Urabe,J.,Gurung,T.B.,Yoshida,T.,Sekino,T.,Nakanishi,M.,Maruo,M.and Nakayama,E.: "Diel changes in phagotrophy by Cryptomanas in Lake Biwa."Limnol.Oceanogr.. 45. 1558-1563 (2000)

    • Related Report
      2000 Annual Research Report
  • [Publications] Gurung,T.B.,Nakanishi,M.and Urabe,J.: "Seasonal and vertical difference in negative and positive effects of grazers on heterotrophic bacteria in Lake Biwa."Limnol.Oceanogr.. 45. 1689-1696 (2000)

    • Related Report
      2000 Annual Research Report
  • [Publications] 中西正己: "地球環境学4「水・物質循環系の変化」(pp.229-265地域開発・都市化と水・物質循環の変化)"岩波書店. 343 (1999)

    • Related Report
      2000 Annual Research Report
  • [Publications] NAKANISHI, Masami: "A Hypothesis on formation of the subsurface chlorophy ll maximum observed in Lake Biwa in summer of 1994"Japanese Journal of Limnology. 60・2. 125-137 (1999)

    • Related Report
      1999 Annual Research Report
  • [Publications] GURUNG, T. Bahadul: "Regulation of the relationship between phytoplankton scenedesmus acutas and heterotrophic bacteria by balance of light and nutrients"Aquatic Microbial Ecology. 17. 27-35 (1999)

    • Related Report
      1999 Annual Research Report
  • [Publications] URABE, Jotaro: "Light, nutrients and primary productivity in Lake Biwa : An evaluation of the current ecosystem situation"Ecologial Research. 14. 233-242 (1999)

    • Related Report
      1999 Annual Research Report
  • [Publications] TANAKA, Yuji: "Quantum yield of photosynthesis and spectral absorption of phytoplankton during the stratified periods at the north basin of Lake Biwa"Japanese Journal of Limnology. 60・4. 507-529 (1999)

    • Related Report
      1999 Annual Research Report
  • [Publications] MITAMURA, Osamu: "Seasonal change in photosynthetic activity of photoautotrophic picoplankton in Lake Biwa"Japanese Journal of Limnology. 60・4. 453-467 (1999)

    • Related Report
      1999 Annual Research Report
  • [Publications] 山田佳裕・中西正己: "地球環境科学4「水・物資循環系の変化」"岩波書店. 348 (1999)

    • Related Report
      1999 Annual Research Report
  • [Publications] NAKANISHI,M., SEKINO,T., KIMOTO,T.: "A Hypothesis on Formation of the Subsurface Chlorophyll Maximum Observed in Lake Biwa in Summer of 1994.(in press)" Jpn.J.Limnol.(1999)

    • Related Report
      1998 Annual Research Report
  • [Publications] URABE,J., GRUNG,T.B.& YOSHIDA,T.: "Effect of Phosphorus Supply on Phagotrophy by the Mixotrophic Alga, Uroglena americana (Chrysophyceae)(in press)" Aquat.Microb.Ecol.(1999)

    • Related Report
      1998 Annual Research Report
  • [Publications] 杉山雅人: "共同沈殿法と海洋化学研究" 海洋化学研究. 11. 71-93 (1998)

    • Related Report
      1998 Annual Research Report
  • [Publications] URABE,J.,...,MIYAZAKI,T.& NAKANISHI,M.: "Light, Nutrients and Primary Productivity in Lake Biwa: an Evaluation of the Current Ecosystem Situation.(in press)" Ecol.Res.(1999)

    • Related Report
      1998 Annual Research Report
  • [Publications] OKAMOTO,K.,...,NAKAYAMA,E.: "Selective and Sensitive Determination of Trace Manganse in Sea Water by Flow through Technique using Luminol-Hydrogen Peroxide Chemiluminescence Detection." Anal.Chim.Acta. 377. 125-131 (1998)

    • Related Report
      1998 Annual Research Report
  • [Publications] OZEKI,T.,...,& KIMOTO,T.: "Study of Errors in Determination of Hydrogen Ion Concentrations in Rainwaster Samples using Glass Electrode Method." Anal.Sci.14. 749-756 (1998)

    • Related Report
      1998 Annual Research Report
  • [Publications] 山田佳裕・中西正己(分担執筆): "地球環境科学4.水・物質循環系の変化" 岩波書店, 348 (1999)

    • Related Report
      1998 Annual Research Report

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Published: 1998-04-01   Modified: 2016-04-21  

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