Theoretical studies on regime shifts in lake ecosystems

2008 Fiscal Year Final Research Report

• Project/Area Number: 18770017
• Research Category: Grant-in-Aid for Young Scientists (B)
• Allocation Type: Single-year Grants
• Research Field: Ecology/Environment
• Research Institution: Kyoto University (2007-2008); Ehime University (2006)
• Principal Investigator: KATO Motomi Kyoto University, 生態学センター, 研究員 (60403854)
• Project Period (FY): 2006 – 2008
• Keywords: 湖沼 / 富栄養化 / レジームシフト / 生態系 / 植物プランクトン / リン

Research Abstract

湖沼生態系において、突発的に起こる不連続な富栄養化には沿岸帯に生息する沈水性の沿岸帯植物が関与している。沿岸帯植物の不連続な富栄養化にたいする関与として、(1)湖底に根を張ることにより湖底から栄養塩であるリンの再循環を抑制して植物プランクトンの増殖を抑える効果と、(2)動物プランクトンに棲み場所を提供して植物プランクトンへの摂食圧を高める効果が知られている。本研究ではこれら二つの効果に関して、湖沼形態(面積・水深・湖盆の形状)を考慮した数理モデルを構築し、湖沼形態に応じた不連続な富栄養化の可能性を予測するモデルを構築した。

Research Products

• [Journal Article] On the coexistence of three predatory stonefly species in a central Japanese stream (2009)
  • Author(s): Genkai-Kato M. & Miyasaka H
  • Journal Title: Ecological Reseach (in press)
  • Peer Reviewed
• [Journal Article] Seasonal change in the gut clearance rate of three stonefly species in a Japanese stream (2009)
  • Author(s): Miyasaka H & Genkai-Kato M
  • Journal Title: Ecological Reseach 24 Pages: 231-234
  • Peer Reviewed
• [Journal Article] Shift between carnivory and omnivory in stream stonefly predators (2009)
  • Author(s): Miyasaka H & Genkai-Kato M
  • Journal Title: Ecological Reseach 24 Pages: 11-19
  • Peer Reviewed
• [Journal Article] Photosynthetic property and primary production of phytoplankton in sublittoral sand bank area in the Seto Inland Sea, Japan (2009)
  • Author(s): Genkai-Kato M., Onishi M., Doi H., Nozaki K., Yoshino K., Miyasaka H. & Omori K
  • Journal Title: Ecological Reseach 23 Pages: 1025-1032
  • Peer Reviewed
• [Journal Article] Length-weight relationships in six amphibian species of Japan (2008)
  • Author(s): Takahara T., Miyasaka H., Genkai-Kato M. & Kohmatu Y
  • Journal Title: Current Herpetology 27 Pages: 43-45
  • Peer Reviewed
• [Journal Article] Bivalve tissue as a carbon and nitrogen isotope baseline indicator in coastal ecosystems (2008)
  • Author(s): Fukumori K., Oi M., Doi H., Takahashi D., Okuda N., Miller T.W., Kuwae M., Miyasaka H., Genkai-Kato M., Koizumi Y., Omori K & Takeoka H
  • Journal Title: Estarine, Coastal and Shelf Science 79 Pages: 45-50
  • Peer Reviewed
• [Journal Article] Relationships between length and weight of freshwater macroinvertebrates in Japan (2008)
  • Author(s): Miyasaka H., Genkai-Kato M., Miyake Y., Kishi D., Katano I., Doi H., Ohba S. & Kuhara N
  • Journal Title: Limnology 9 Pages: 75-80
  • Peer Reviewed
• [Journal Article] Role of phytoplankton community struvture between Lake Baikal and Lake Biwa (2007)
  • Author(s): Sekino T., Genkai-Kato M., Kawabata Z., Melnik N.G., Logacheval N.P., Belykh O. I., Obolkina L.A., Bondarenko N.A., Khodzher T.V., Gorbunova L.A., Tanichev A.I., Yoshida T., Kagami M., Gurung T.B., Urabe J., Higashi M. & Nakanishi M.
  • Journal Title: Limnology 8 Pages: 227-232
  • Peer Reviewed
• [Journal Article] Seasonal change in the gastric evacuation rate of rainbow trout feeding on natural prey (2007)
  • Author(s): Kawaguchi Y., Miyasaka H., Genkai-Kato M., Taniguchi Y. & Nakano S
  • Journal Title: Journal of Fish Biology 71 Pages: 1873-1878
  • Peer Reviewed
• [Journal Article] Regime shifts in ecosystems (2007)
  • Author(s): Genkai-Kato M.
  • Journal Title: Kasen 63(5) Pages: 63-65
• [Journal Article] Length-weight relationships of four predatory stonefly species in Japan (2007)
  • Author(s): Genkai-Kato M. & Miyashita H
  • Journal Title: Lomnology 8 Pages: 171-174
  • Peer Reviewed
• [Journal Article] Length-weigth relationships of two varunid crab species, Helice tridence and Chasmagnathus convexus, in Japan (2007)
  • Author(s): Miyasaka H., Genkai-Kato M., Goda Y., & Omori K.
  • Journal Title: Lomnoligy 8 Pages: 81-83
  • Peer Reviewed
• [Journal Article] Spatial distribution of organic and sulfur geochemical parameters of oxic anoxic surface sediment in Beppu Bay in southwest Japan (2007)
  • Author(s): Kuwae M., Yamaguchi H., Tsugeki N.K., Miyasaka H., Fukumori K., Ikehara M., Genkai-Kato M., Omori K., Sugimoto T., Ishida S. & Takeoka H
  • Journal Title: Estuarine, Coastal and Shelf Science 72 Pages: 348-358
  • Peer Reviewed
• [Journal Article] Regime shifts : catastrophic responses of ecosystem to human impacts (2007)
  • Author(s): Genkai-Kato M.
  • Journal Title: Ecological Research 22 Pages: 214-219
  • Peer Reviewed
• [Journal Article] Macrophyte refuges, prey behaviour and trophic interactions : consequences for lake water clarity (2007)
  • Author(s): Genkai-Kato M
  • Journal Title: Ecology Letters 10 Pages: 105-114
  • Peer Reviewed
• [Journal Article] Feeding ecology of two planktonic sculpins, Comephorus baicalensis and Comephorus dybowskii(Comephoridae), in Lake Baikal (2006)
  • Author(s): Miyasaka H., Dzyuba Y.V., Genkai-Kato M., Ito S., Kohzu A., Anoshko P.N., Khanayev I.V., Shubenkov S.G., Melnik N.G., Timoshkin O.A. & Wada E
  • Journal Title: Ichthyological Research 53 Pages: 419-422
  • Peer Reviewed
• [Journal Article] Sand banks contribute to the production of coastal waters by making a habitat for benthic microalgae in the sublittoral zone : food web analyses in Aki-Nada using stable isotopes (2006)
  • Author(s): Yoshino K., Miyasaka H., Kawamura Y., Genkai-Kato M., Okuda N., Hayami Y., Ito S/. Fukumori K., Sekiguchi T., Ohnishi H., Ohmori K. & Takeoka H
  • Journal Title: Plankton and Benthos Research 1(3) Pages: 155-163
  • Peer Reviewed
• [Presentation] 沿岸域にある好漁港における植物プランクトンの光合成特性と一次生産 (2009)
  • Author(s): 加藤元海
  • Organizer: 日本生態学会
  • Place of Presentation: 岩手県立大学
  • Year and Date: 20090300
• [Presentation] Macrophyte refges, prey behavior, and trophic interactions : Consequences for lake water clarity (2008)
  • Author(s): Genkai-Kato M
  • Organizer: アメリカ生態学会(ESA)
  • Place of Presentation: ミルウォーキー(米国ウィスコン州)
  • Year and Date: 20080800
• [Presentation] 湖沼の規模、植物網構造、動物の適応行動とレジームシフト (2008)
  • Author(s): 加藤元海
  • Organizer: 日本生態学会
  • Place of Presentation: 福岡国際会議場
  • Year and Date: 20080300
• [Presentation] Eutrophication of lakes in relation to lake morphometry water temperature, and macrophytes (2007)
  • Author(s): Genkai-Kato M
  • Organizer: 日米合同数理生物学大会
  • Place of Presentation: サンノゼ(アメリカ合衆国)
  • Year and Date: 20070700
• [Presentation] 湖沼形態・水温・沿岸帯植物を考慮した不連続な富栄養化の予測 (2006)
  • Author(s): 加藤元海
  • Organizer: 日本陸水学会
  • Place of Presentation: 愛媛大学
  • Year and Date: 20060900
• [Book] 川の百科事典, (用語を分担執筆) (2009)
  • Author(s): 高橋裕, (編集)
  • Publisher: 丸善
• [Book] 流域環境学 : 流域ガバナンスの理論と実践, (分担執筆、第2部2章4節、マクロスケール : 琵琶湖のレジームシフトの可能性) (2009)
  • Author(s): 和田英太郎, (監修), 谷内茂雄・脇田健一・原雄一・中野孝教・陀安一郎・田中拓弥編集)
  • Total Pages: 92-98
  • Publisher: 京都大学出版会
• [Book] Chemical Pollution and Enviromental Changes, (Vital statistics of three omnivorous stonefy species in a central Japanese stream. In Tanabe S., Takeo H., Isobe T. & Nishibe Y.(Eds.)) (2007)
  • Author(s): Genkai-Kato M. & Miyasaka H
  • Total Pages: 339-341
  • Publisher: Universal Academy Press, Tokyo
• [Book] Chemical Pollution and Enviromental Changes, (Prey preference of three predatory stonefly species under a low-activity condition. In Tanabe S., Takeoka H., Isobe T. & Nishibe Y.(Eds.)) (2007)
  • Author(s): Miyasaki H. & Genkai-Kato M
  • Total Pages: 331-333
  • Publisher: Universal Academy Press, Tokyo
• [Book] Chemical Pollution and Enviromental Changes, (Accuuracy assessment fpr chlorphyll a measurements in the gut of stream stonefly nymphs. In Tanabe S., Takeoka H., Isobe T. & Nishibe Y.(Eds.)) (2007)
  • Author(s): Miyasaka H. & Genkai-Kato M
  • Total Pages: 335-337
  • Publisher: Universal Academy Press, Tokyo
• [Book] Chemical Pollution and Enviromental Changes, (Food web abalyses in Aki-Nada using stable isotopes : ecological significance of sand banks in coastal waters. In Tanabe S., Takeoka H., Isobe T. & Nishibe Y. (Eds.)) (2007)
  • Author(s): Yoshino K., Miyasaka H., Kawamura Y., Genkai-Kato M., Ohmori K. & Takeoka H
  • Total Pages: 421-424
  • Publisher: Universal Academy Press, Tokyo