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:
https://lup.lub.lu.se/record/1168873
- author
- Olsson, Ola
LU
; Brown, Joel S
and Helf, Kurt L
- organization
- publishing date
- 2008
- 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
- pmid:18550139
- 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
- 2016-04-01 13:42:46
- date last changed
- 2024-04-10 09:36:09
@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}},
keywords = {{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}},
doi = {{10.1016/j.tpb.2008.04.005}},
volume = {{74}},
year = {{2008}},
}