2012 Fiscal Year Final Research Report
Mitigation of stoichiometry effects on biological interactions by biodiversity.
| Project/Area Number |
22370007
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| Research Category |
Grant-in-Aid for Scientific Research (B)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Ecology/Environment
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| Research Institution | Tohoku University |
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Principal Investigator |
URABE Jotaro 東北大学, 大学院・生命科学研究科, 教授 (50250163)
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| Co-Investigator(Renkei-kenkyūsha) |
MMAKINO Wataru 東北大学, 大学院・生命科学研究科, 助教 (90372309)
ISHIDA Seiji 東北大学, 大学院・生命科学研究科, GCOE助教 (80547331)
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| Project Period (FY) |
2010 – 2012
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| Keywords | 動物プランクトン / 生物多様性 / 栄養動態 / 個体群動態 / 生態化学量論 / ミジン コ / 藻類 / 資源獲得競争 |
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| Research Abstract |
This study was performed to clarify experimentally how stoichiometric impacts by putative environmental changes on prey (algae) - consumer (Daphnia) interactions are altered depending on genetic and species identities of consumers. Theoretical and experimental analyses showed that optimal feeding rates of the consumers change depending not only on abundance but also stoichiometry of algal food, that threshold food levels of the consumers change even within species according to the genotypes, and that outcomes of competitive interactions change depending on species identities of the consumers. These results support an idea that stoichiometric impacts on ecosystem processes are different among communities with different genetic and species identities.
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