Advanced

Information-Mediated Allee Effects in Breeding Habitat Selection

Schmidt, Kenneth A.; Johansson, Jacob LU and Betts, Matthew G. (2015) In American Naturalist 186(6). p.162-171
Abstract
Social information is used widely in breeding habitat selection and provides an efficient means for individuals to select habitat, but the population-level consequences of this process are not well explored. At low population densities, efficiencies may be reduced because there are insufficient information providers to cue high-quality habitat. This constitutes what we call an information-mediated Allee effect. We present the first general model for an information-mediated Allee effect applied to breeding habitat selection and unify personal and social information, Allee effects, and ecological traps into a common framework. In a second model, we consider an explicit mechanism of social information gathering through prospecting on... (More)
Social information is used widely in breeding habitat selection and provides an efficient means for individuals to select habitat, but the population-level consequences of this process are not well explored. At low population densities, efficiencies may be reduced because there are insufficient information providers to cue high-quality habitat. This constitutes what we call an information-mediated Allee effect. We present the first general model for an information-mediated Allee effect applied to breeding habitat selection and unify personal and social information, Allee effects, and ecological traps into a common framework. In a second model, we consider an explicit mechanism of social information gathering through prospecting on conspecific breeding performance. In each model, we independently vary personal and social information use to demonstrate how dependency on social information may result in either weak or strong Allee effects that, in turn, affect population extinction risk. Abrupt transitions between outcomes can occur through reduced information transfer or small changes in habitat composition. Overall, information-mediated Allee effects may produce positive feedbacks that amplify population declines in species that are already experiencing environmentally driven stressors, such as habitat loss and degradation. Alternatively, social information has the capacity to rescue populations from ecological traps. (Less)
Please use this url to cite or link to this publication:
author
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
Allee effect, Allee threshold, ecological trap, habitat selection, social information
in
American Naturalist
volume
186
issue
6
pages
162 - 171
publisher
University of Chicago Press
external identifiers
  • wos:000365307700002
  • scopus:84947566637
ISSN
0003-0147
DOI
10.1086/683659
language
English
LU publication?
yes
id
e8067bdf-688f-4ed5-be0e-e97d5d0adcf2 (old id 8532802)
date added to LUP
2016-01-20 13:49:40
date last changed
2017-08-20 03:22:05
@article{e8067bdf-688f-4ed5-be0e-e97d5d0adcf2,
  abstract     = {Social information is used widely in breeding habitat selection and provides an efficient means for individuals to select habitat, but the population-level consequences of this process are not well explored. At low population densities, efficiencies may be reduced because there are insufficient information providers to cue high-quality habitat. This constitutes what we call an information-mediated Allee effect. We present the first general model for an information-mediated Allee effect applied to breeding habitat selection and unify personal and social information, Allee effects, and ecological traps into a common framework. In a second model, we consider an explicit mechanism of social information gathering through prospecting on conspecific breeding performance. In each model, we independently vary personal and social information use to demonstrate how dependency on social information may result in either weak or strong Allee effects that, in turn, affect population extinction risk. Abrupt transitions between outcomes can occur through reduced information transfer or small changes in habitat composition. Overall, information-mediated Allee effects may produce positive feedbacks that amplify population declines in species that are already experiencing environmentally driven stressors, such as habitat loss and degradation. Alternatively, social information has the capacity to rescue populations from ecological traps.},
  author       = {Schmidt, Kenneth A. and Johansson, Jacob and Betts, Matthew G.},
  issn         = {0003-0147},
  keyword      = {Allee effect,Allee threshold,ecological trap,habitat selection,social information},
  language     = {eng},
  number       = {6},
  pages        = {162--171},
  publisher    = {University of Chicago Press},
  series       = {American Naturalist},
  title        = {Information-Mediated Allee Effects in Breeding Habitat Selection},
  url          = {http://dx.doi.org/10.1086/683659},
  volume       = {186},
  year         = {2015},
}