Species abundance patterns and their origin in large-scale communities
| Project/Area Number |
24570099
|
|---|
| Research Category |
Grant-in-Aid for Scientific Research (C)
|
| Allocation Type | Multi-year Fund |
|---|
| Section | 一般 |
|---|
| Research Field |
Biodiversity/Systematics
|
|---|
| Research Institution | Nagoya University (2013-2015)
Osaka University (2012) |
|---|
Principal Investigator |
Kei Tokita 名古屋大学, 情報科学研究科, 教授 (00263195)
|
|---|
| Project Period (FY) |
2012-04-01 – 2016-03-31
|
| Project Status |
Completed (Fiscal Year 2015)
|
| Budget Amount *help |
¥5,720,000 (Direct Cost: ¥4,400,000、Indirect Cost: ¥1,320,000)
Fiscal Year 2014: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2013: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2012: ¥3,380,000 (Direct Cost: ¥2,600,000、Indirect Cost: ¥780,000)
|
|---|
| Keywords | 群集生態 / 相互作用 / 多様性 / 種の豊富さのパターン / 国際研究者交流（米国他） / 国際情報交換（米国他） / 国際研究者交流（米国） / 国際情報交換（米国） / 中立モデル / 国際研究者交流（米国，英国，台湾，韓国） / 国際情報交換（米国，英国，台湾，韓国） / 国際研究者交流（英国，韓国，台湾，米国） / 国際情報交換（英国，韓国，台湾，中国，米国） / 国際研究者交流（英国） / 国際情報交換（英国，台湾） |
|---|
| Outline of Final Research Achievements |
An ecological model with multiple species and the dependency of the species abundance patterns on various community parameters were theoretically analyzed. It has been clarified that the ratio of the intraspecifc/interspecies interactions, the symmetry of the interaction matrix, sparceness of the interaction matrix and the density ratio of mutualistic/competitive interactions respectively, respectively, plays an important role for the species abundance patterns. In special, for a community with sparse interaction matrix, a solution of all species coexistence and a multiple peaked species abundance distribution has been newly discovered. In the research period 2013-2015, four peer-reviewed journal papers were published and eight (incl. two invited and two symposium chair) international conference talk were given. In addition, two peer-reviewed journal papers will be published during this fiscal year.
|
Report
(5 results)
Research Products
(33 results)
-
-
-
-
-
-
-
-
-
-
-
-
[Presentation] Degree of interactions essentially changes relative species abundance2015
Author(s)
Tomoyuki Obuchi, Yoshiyuki Kabashima and Kei Tokita
Organizer
Joint Conference of 2015 Annual Meeting of Japanese Society for Mathematical Biology and 2015 5th China-Japan-Korea International Conference on Mathematical Biology (CJKICMB2012)
Place of Presentation
Doshisha University, Kyoto, Japan
Year and Date
2015-08-26
Related Report
Int'l Joint Research
-
[Presentation] Biological and social communications2015
Author(s)
Kei Tokita
Organizer
Joint Conference of 2015 Annual Meeting of Japanese Society for Mathematical Biology and 2015 5th China-Japan-Korea International Conference on Mathematical Biology (CJKICMB2012)
Place of Presentation
Doshisha University, Kyoto, Japan
Year and Date
2015-08-26
Related Report
Int'l Joint Research / Invited
-
-
[Presentation] Statistical mechanics of a random community model2015
Author(s)
Kei Tokita
Organizer
Joint Workshop of International Institute for Applied Systems Analysis (IIASA) & Research Institute for Humanity and Nature (RIHN: 総合地球環境学研究所) at IIASA
Place of Presentation
Institute for Applied Systems Analysis (IIASA), Laxenberg, Austria
Year and Date
2015-03-27
Related Report
Invited
-
-
-
[Presentation] Spatially Explicit Neutral Model2014
Author(s)
Kei Tokita and Takeshi Oura
Organizer
Joint Annual Meeting of the Japanese Society for Mathematical Biology and the Society for Mathematical Biology (JSMB/SMB2014)
Place of Presentation
Osaka International Convention Center (Grand Cube Osaka), Osaka
Year and Date
2014-07-28 – 2014-08-01
Related Report
Invited
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
