Danino, M, Shnerb, NM, Azaele, S orcid.org/0000-0002-5153-4833 et al. (2 more authors) (2016) The effect of environmental stochasticity on species richness in neutral communities. Journal of Theoretical Biology, 409. pp. 155-164. ISSN 0022-5193
Abstract
Environmental stochasticity is known to be a destabilizing factor, increasing abundance fluctuations and extinction rates of populations. However, the stability of a community may benefit from the differential response of species to environmental variations due to the storage effect. This paper provides a systematic and comprehensive discussion of these two contradicting tendencies, using the metacommunity version of the recently proposed time-average neutral model of biodiversity which incorporates environmental stochasticity and demographic noise and allows for extinction and speciation. We show that the incorporation of demographic noise into the model is essential to its applicability, yielding realistic behavior of the system when fitness variations are relatively weak. The dependence of species richness on the strength of environmental stochasticity changes sign when the correlation time of the environmental variations increases. This transition marks the point at which the storage effect no longer succeeds in stabilizing the community.
Metadata
Item Type: | Article |
---|---|
Authors/Creators: |
|
Copyright, Publisher and Additional Information: | © 2016, Elsevier. Ltd. All rights reserved. This is an author produced version of a paper published in Journal of Theoretical Biology. Uploaded in accordance with the publisher's self-archiving policy. |
Keywords: | Community dynamics; Environmental stochasticity; Storage effect; Neutral theory. |
Dates: |
|
Institution: | The University of Leeds |
Academic Units: | The University of Leeds > Faculty of Biological Sciences (Leeds) > School of Biology (Leeds) The University of Leeds > Faculty of Engineering & Physical Sciences (Leeds) > School of Mathematics (Leeds) > Applied Mathematics (Leeds) |
Depositing User: | Symplectic Publications |
Date Deposited: | 31 Aug 2016 10:31 |
Last Modified: | 24 Aug 2017 00:38 |
Published Version: | http://dx.doi.org/10.1016/j.jtbi.2016.08.029 |
Status: | Published |
Publisher: | Elsevier |
Identification Number: | 10.1016/j.jtbi.2016.08.029 |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:104004 |