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Habitat selection and population regulation in temporally fluctuating environments

Jonzén, Niclas LU ; Wilcox, C and Possingham, H P (2004) In American Naturalist 164(4). p.103-114
Abstract
Understanding and predicting the distribution of organisms in heterogeneous environments lies at the heart of ecology, and the theory of density-dependent habitat selection (DDHS) provides ecologists with an inferential framework linking evolution and population dynamics. Current theory does not allow for temporal variation in habitat quality, a serious limitation when confronted with real ecological systems. We develop both a stochastic equivalent of the ideal free distribution to study how spatial patterns of habitat use depend on the magnitude and spatial correlation of environmental stochasticity and also a stochastic habitat selection rule. The emerging patterns are confronted with deterministic predictions based on isodar analysis,... (More)
Understanding and predicting the distribution of organisms in heterogeneous environments lies at the heart of ecology, and the theory of density-dependent habitat selection (DDHS) provides ecologists with an inferential framework linking evolution and population dynamics. Current theory does not allow for temporal variation in habitat quality, a serious limitation when confronted with real ecological systems. We develop both a stochastic equivalent of the ideal free distribution to study how spatial patterns of habitat use depend on the magnitude and spatial correlation of environmental stochasticity and also a stochastic habitat selection rule. The emerging patterns are confronted with deterministic predictions based on isodar analysis, an established empirical approach to the analysis of habitat selection patterns. Our simulations highlight some consistent patterns of habitat use, indicating that it is possible to make inferences about the habitat selection process based on observed patterns of habitat use. However, isodar analysis gives results that are contingent on the magnitude and spatial correlation of environmental stochasticity. Hence, DDHS is better revealed by a measure of habitat selectivity than by empirical isodars. The detection of DDHS is but a small component of isodar theory, which remains an important conceptual framework for linking evolutionary strategies in behavior and population dynamics. (Less)
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author
organization
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Contribution to journal
publication status
published
subject
in
American Naturalist
volume
164
issue
4
pages
103 - 114
publisher
University of Chicago Press
external identifiers
  • wos:000224079900003
  • scopus:34548069352
ISSN
0003-0147
language
English
LU publication?
yes
id
8adb0cee-7269-482d-9c97-fa90725cff71 (old id 135394)
alternative location
http://lup.lub.lu.se/luur?func=downloadFile&fileOId=624541
date added to LUP
2007-07-03 12:53:53
date last changed
2017-08-20 03:47:42
@article{8adb0cee-7269-482d-9c97-fa90725cff71,
  abstract     = {Understanding and predicting the distribution of organisms in heterogeneous environments lies at the heart of ecology, and the theory of density-dependent habitat selection (DDHS) provides ecologists with an inferential framework linking evolution and population dynamics. Current theory does not allow for temporal variation in habitat quality, a serious limitation when confronted with real ecological systems. We develop both a stochastic equivalent of the ideal free distribution to study how spatial patterns of habitat use depend on the magnitude and spatial correlation of environmental stochasticity and also a stochastic habitat selection rule. The emerging patterns are confronted with deterministic predictions based on isodar analysis, an established empirical approach to the analysis of habitat selection patterns. Our simulations highlight some consistent patterns of habitat use, indicating that it is possible to make inferences about the habitat selection process based on observed patterns of habitat use. However, isodar analysis gives results that are contingent on the magnitude and spatial correlation of environmental stochasticity. Hence, DDHS is better revealed by a measure of habitat selectivity than by empirical isodars. The detection of DDHS is but a small component of isodar theory, which remains an important conceptual framework for linking evolutionary strategies in behavior and population dynamics.},
  author       = {Jonzén, Niclas and Wilcox, C and Possingham, H P},
  issn         = {0003-0147},
  language     = {eng},
  number       = {4},
  pages        = {103--114},
  publisher    = {University of Chicago Press},
  series       = {American Naturalist},
  title        = {Habitat selection and population regulation in temporally fluctuating environments},
  volume       = {164},
  year         = {2004},
}