Abstract
The dynamics of two competing species in a finite size community is one of the most studied problems in population genetics and community ecology. Stochastic fluctuations lead, inevitably, to the extinction of one of the species, but the relevant timescale depends on the underlying dynamics. The persistence time of the community has been calculated both for neutral models, where the only driving force of the system is drift (demographic stochasticity), and for models with strong selection. Following recent analyses that stress the importance of environmental stochasticity in empirical systems, we present here a general theory of the persistence time of a two-species community where drift, environmental variations and time independent selective advantage are all taken into account.
| Original language | English |
|---|---|
| Pages (from-to) | 57-71 |
| Number of pages | 15 |
| Journal | Theoretical Population Biology |
| Volume | 119 |
| DOIs | |
| State | Published - Feb 2018 |
Bibliographical note
Publisher Copyright:© 2017 Elsevier Inc.
Funding
N.M.S. acknowledge the support of the Israel Science Foundation, grant no. 1427/15. D.A.K. acknowledge the support of BSF grant no. 2015619. N.M.S. acknowledge the support of the Israel Science Foundation , grant no. 1427/15 . D.A.K. acknowledge the support of BSF grant no. 2015619 . Appendix A
| Funders | Funder number |
|---|---|
| N.M.S. | |
| Barth Syndrome Foundation | |
| United States-Israel Binational Science Foundation | 2015619 |
| Israel Science Foundation | 1427/15 |
Keywords
- Community dynamics
- Demographic stochasticity
- Environmental stochasticity
- Neutral theory
- Selection
- Storage effect