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| Cycles and Diversity in Ecology |
| 2016-04-20
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Institute of Theoretical Physics |
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Key Laboratory of Theoretical Physics |
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Chinese Academy of Sciences |
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Seminar |
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Title
题目 |
Cycles and Diversity in Ecology |
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Speaker
报告人 |
Prof. Kim Sneppen |
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Affiliation
所在单位 |
Niels Bohr Institute, Danmark |
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Date
日期 |
10:30--11:30,Wednesday, April 20 2016 |
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Venue
地点 |
Conference Hall 322, ITP/理论物理所322报告厅 |
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Abstract
摘要 |
The talk presents two one parameter models of competing species. In the first the focus is on sessile species growing on a 2 dimensional surface. The focus is on self organized spatial segregation and emergence of diversity.As function of invasion probability we find a first order transition to a high diversity state, that rely on transient short lived cycles of length four to six. The second model suggest a new view on exponential growth and population collapses in a well mixed system. The emphasis is here on non-stationary aspects of ecosystem dynamics, including a new perspective on causes of oscillations in population sizes.
References:
1) Emergence of diversity in a model ecosystem
N Mitarai, J Mathiesen, K Sneppen PRE 86, 011929 (2012)
2) Diversity waves in collapse-driven population dynamics
S Maslov, K Sneppen arXiv:1503.00529 (2015) |
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Contact Person
所内合作者 |
Hai-Jun Zhou |
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