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A guide to central place effects in foraging.

Olsson, Ola LU ; Brown, Joel S and Helf, Kurt L (2008) In Theoretical Population Biology 74(1). p.22-33
Abstract
We develop a general patch-use model of central place foraging, which subsumes and extends several previous models. The model produces a catalog of central place effects predicting how distance from a central place influences the costs and benefits of foraging, load-size, quitting harvest rates, and giving-up densities. In the model, we separate between costs that are load-size dependent, i.e. a direct effect of the size of the load, and load-size independent effects, such as correlations between distance and patch qualities. We also distinguish between predictions of between- and within-environment comparisons. Foraging costs, giving-up densities and quitting harvest rates should almost always increase with distance with these effects... (More)
We develop a general patch-use model of central place foraging, which subsumes and extends several previous models. The model produces a catalog of central place effects predicting how distance from a central place influences the costs and benefits of foraging, load-size, quitting harvest rates, and giving-up densities. In the model, we separate between costs that are load-size dependent, i.e. a direct effect of the size of the load, and load-size independent effects, such as correlations between distance and patch qualities. We also distinguish between predictions of between- and within-environment comparisons. Foraging costs, giving-up densities and quitting harvest rates should almost always increase with distance with these effects amplified by increases in metabolic costs, predation risk and load-costs. With respect to load-size: when comparing foraging in patches within an environment, we should often expect smaller loads to be taken from distant patches (negative distance-load correlation). However, when comparing between environments, there should be a positive correlation between average distance and load-size. (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
Patch use, Foraging theory, Habitat selection, Predation cost of foraging, Central place foraging, Optimality, GUD
in
Theoretical Population Biology
volume
74
issue
1
pages
22 - 33
publisher
Academic Press
external identifiers
  • wos:000257912400004
  • scopus:46449113774
ISSN
1096-0325
DOI
10.1016/j.tpb.2008.04.005
language
English
LU publication?
yes
id
2a1fecdb-5450-4fdf-928c-e5223b9f7179 (old id 1168873)
date added to LUP
2008-11-27 12:55:49
date last changed
2017-07-23 04:10:43
@article{2a1fecdb-5450-4fdf-928c-e5223b9f7179,
  abstract     = {We develop a general patch-use model of central place foraging, which subsumes and extends several previous models. The model produces a catalog of central place effects predicting how distance from a central place influences the costs and benefits of foraging, load-size, quitting harvest rates, and giving-up densities. In the model, we separate between costs that are load-size dependent, i.e. a direct effect of the size of the load, and load-size independent effects, such as correlations between distance and patch qualities. We also distinguish between predictions of between- and within-environment comparisons. Foraging costs, giving-up densities and quitting harvest rates should almost always increase with distance with these effects amplified by increases in metabolic costs, predation risk and load-costs. With respect to load-size: when comparing foraging in patches within an environment, we should often expect smaller loads to be taken from distant patches (negative distance-load correlation). However, when comparing between environments, there should be a positive correlation between average distance and load-size.},
  author       = {Olsson, Ola and Brown, Joel S and Helf, Kurt L},
  issn         = {1096-0325},
  keyword      = {Patch use,Foraging theory,Habitat selection,Predation cost of foraging,Central place foraging,Optimality,GUD},
  language     = {eng},
  number       = {1},
  pages        = {22--33},
  publisher    = {Academic Press},
  series       = {Theoretical Population Biology},
  title        = {A guide to central place effects in foraging.},
  url          = {http://dx.doi.org/10.1016/j.tpb.2008.04.005},
  volume       = {74},
  year         = {2008},
}