2010 Fiscal Year Final Research Report
Indirect interaction webs : a new approach exploring networks of interacting species
| Project/Area Number |
20370010
|
|---|
| Research Category |
Grant-in-Aid for Scientific Research (B)
|
| Allocation Type | Single-year Grants |
|---|
| Section | 一般 |
|---|
| Research Field |
Ecology/Environment
|
|---|
| Research Institution | Kyoto University |
|---|
Principal Investigator |
OHGUSHI Takayuki Kyoto University, 生態学研究センター, 教授 (10203746)
|
|---|
| Co-Investigator(Kenkyū-buntansha) |
TAKABAYASHI Junji 京都大学, 生態学研究センター, 教授 (10197197)
YAMAUCHI Atsushi 京都大学, 生態学研究センター, 教授 (40270904)
|
|---|
| Project Period (FY) |
2008 – 2010
|
| Keywords | 生態学 / 生物群集 / 間接相互作用 |
|---|
| Research Abstract |
Using field experiments, we investigated how trait-mediated indirect effects of plants influence diversity, abundance, and structure of arthropod communities, and how these effects in turn promote the trait evolution of community members. We obtained following important findings in terms of evolution-community feedbacks : (1) changes in plant traits due to herbivore attack greatly altered species diversity, relative abundance, and community composition of herbivores and predators, (2) herbivore-induced trait change initiated bottom-up trophic cascades in a temporally-separated community, (3) the preference of willow leaf beetle to new leaves largely depends on the strength of secondary growth following herbivory, and this new leaf preference suggests rapid trait evolution.
|
