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Dispersal Ecology and Evolution$
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Jean Clobert, Michel Baguette, Tim G. Benton, and James M. Bullock

Print publication date: 2012

Print ISBN-13: 9780199608898

Published to Oxford Scholarship Online: December 2013

DOI: 10.1093/acprof:oso/9780199608898.001.0001

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Demographic consequences of the selective forces controlling density-dependent dispersal

Demographic consequences of the selective forces controlling density-dependent dispersal

Chapter:
(p.266) Chapter 21 Demographic consequences of the selective forces controlling density-dependent dispersal
Source:
Dispersal Ecology and Evolution
Author(s):

François Rousset

Publisher:
Oxford University Press
DOI:10.1093/acprof:oso/9780199608898.003.0021

This chapter presents the example of departure decisions as conditional on current local population size. This appears to be the scenario most actively investigated, partly because of its perceived empirical relevance, although local population age since colonisation and information about potential destination populations is certainly of importance. The chapter summarizes the building blocks of the analysis: the force that makes dispersal evolve to reduce resource competition in the absence of a dispersal cost, the equalization of marginal gains in reproductive value in the presence of a dispersal cost, and the effects of kin competition. The chapter presents an examination of a metapopulation model where an analytical partition of the different forces, such as reproductive value imbalance and kin competition, is possible.

Keywords:   departure decisions, local population size, local population age, resource competition, dispersal cost

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