2011 Fiscal Year Final Research Report
Development of methods to evaluate relative contribution of stabilizing and equalizing mechanisms in community dynamics.
| Project/Area Number |
20570012
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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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 | Hokkaido University |
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Principal Investigator |
NODA Takashi 北海道大学, 大学院・地球環境科学研究院, 准教授 (90240639)
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| Co-Investigator(Renkei-kenkyūsha) |
TAKADA Takenori 北海道大学, 大学院・地球環境科学研究院, 教授 (80206755)
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| Project Period (FY) |
2008 – 2011
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| Keywords | 多種共存機構 / 種内競争 / 種間競争 / 固着生物群集 / 侵入可能性 / 岩礁潮間帯 / 安定化メカニズム / 等質化メカニズム |
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| Research Abstract |
In general, communities contain large number of rare species. The core and occasional species hypothesis, a major explanation of such excess of rare species, is not yet rigorously tested empirically. I tested five predictions arising from the hypothesis for mid-intertidal sessile assemblages locating on steep rock slopes by partitioning all species into core species and occasional species basing on their response to tidal height and seasons. The results support all of the hypothesis predictions, emphasizing that the niche concept is the central in understanding the spatiotemporal patterns in species occurrence in the assemblages.
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