The strength of species interactions modifies population responses to environrnental variation in competitive communities
Ruokolainen, Lasse and Ripa, Jörgen LU
(2012)
In Journal of Theoretical Biology
310.
p.199-205
- Abstract
- The life-history parameters of most living organisms are modified by fluctuations in environmental conditions. The impact of environmental autocorrelation on population persistence is well understood in single species systems. However, in multi-species communities the impact of stochasticity is complicated by the possibility of different species having differing intrinsic responses to the environment (environmental correlation). Previous work has shown that whether increasing between-species environmental correlation stabilises population fluctuations or not, depends on an interaction between density-dependence and environmental autocorrelation. Here we derive analytical conditions for how this interaction in turn depends on the strength... (More)
- The life-history parameters of most living organisms are modified by fluctuations in environmental conditions. The impact of environmental autocorrelation on population persistence is well understood in single species systems. However, in multi-species communities the impact of stochasticity is complicated by the possibility of different species having differing intrinsic responses to the environment (environmental correlation). Previous work has shown that whether increasing between-species environmental correlation stabilises population fluctuations or not, depends on an interaction between density-dependence and environmental autocorrelation. Here we derive analytical conditions for how this interaction in turn depends on the strength of interspecific competition. Under relatively weak between-species interactions, increasing environmental autocorrelation always dampens population fluctuations, while increasing autocorrelation destabilises strongly interacting populations. In contrast, under intermediate interaction strengths, increasing autocorrelation destabilises (stabilises) population dynamics when populations respond independently (similarly) to environmental fluctuations. These results apply to a wide range of competitive communities and also have some relevance to consumer-resource systems. The results presented here help us better understand population responses to environmental fluctuations under different conditions. (c) 2012 Elsevier Ltd. All rights reserved. (Less)
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/3189675
- author
- Ruokolainen, Lasse
and Ripa, Jörgen
LU
- organization
- publishing date
- 2012
- type
- Contribution to journal
- publication status
- published
- subject
- keywords
- Autocorrelation, Competition, Density dependence, Environmental, correlation, Stability
- in
- Journal of Theoretical Biology
- volume
- 310
- pages
- 199 - 205
- publisher
- Academic Press
- external identifiers
-
- wos:000308447900021
- scopus:84864062863
- pmid:22781554
- ISSN
- 1095-8541
- DOI
- 10.1016/j.jtbi.2012.06.035
- language
- English
- LU publication?
- yes
- id
- e63944a4-a992-4f33-923a-0ea6dd8eb8a2 (old id 3189675)
- date added to LUP
- 2016-04-01 12:54:42
- date last changed
- 2022-01-27 08:18:09
@article{e63944a4-a992-4f33-923a-0ea6dd8eb8a2,
abstract = {{The life-history parameters of most living organisms are modified by fluctuations in environmental conditions. The impact of environmental autocorrelation on population persistence is well understood in single species systems. However, in multi-species communities the impact of stochasticity is complicated by the possibility of different species having differing intrinsic responses to the environment (environmental correlation). Previous work has shown that whether increasing between-species environmental correlation stabilises population fluctuations or not, depends on an interaction between density-dependence and environmental autocorrelation. Here we derive analytical conditions for how this interaction in turn depends on the strength of interspecific competition. Under relatively weak between-species interactions, increasing environmental autocorrelation always dampens population fluctuations, while increasing autocorrelation destabilises strongly interacting populations. In contrast, under intermediate interaction strengths, increasing autocorrelation destabilises (stabilises) population dynamics when populations respond independently (similarly) to environmental fluctuations. These results apply to a wide range of competitive communities and also have some relevance to consumer-resource systems. The results presented here help us better understand population responses to environmental fluctuations under different conditions. (c) 2012 Elsevier Ltd. All rights reserved.}},
author = {{Ruokolainen, Lasse and Ripa, Jörgen}},
issn = {{1095-8541}},
keywords = {{Autocorrelation; Competition; Density dependence; Environmental; correlation; Stability}},
language = {{eng}},
pages = {{199--205}},
publisher = {{Academic Press}},
series = {{Journal of Theoretical Biology}},
title = {{The strength of species interactions modifies population responses to environrnental variation in competitive communities}},
url = {{http://dx.doi.org/10.1016/j.jtbi.2012.06.035}},
doi = {{10.1016/j.jtbi.2012.06.035}},
volume = {{310}},
year = {{2012}},
}