EdenteV2, Main, Exploration, bibRecord, 00B191

Juvenile dispersal, limited breeding sites, and the dynamics of metapopulations

Identifieur interne : 00B191 ( Main/Exploration ); précédent : 00B190; suivant : 00B192

Juvenile dispersal, limited breeding sites, and the dynamics of metapopulations

Auteurs : Gregory J. Davis [États-Unis] ; Robert W. Howe [États-Unis]

Source :

Theoretical Population Biology [ 0040-5809 ] ; 1992.

RBID : ISTEX:29EA71C1BCF003EF5C7C46611FC282DC69F71C9C

Descripteurs français

Wicri :
- topic : Habitat, Dynamique de la population.

English descriptors

Abstract

Abstract: Demographic models of metapopulations show a wide range of outcomes depending upon life history and dispersal parameters. In this paper we analyze metapopulations consisting of demographically viable (source) and demographically non-viable (sink) subpopulations. Our analysis identifies conditions under which intrinsic dispersal may have positive, negative, or no effect on metapopulation size. While genetically based dispersal behavior might have selective advantages at the level of the individual, it may become a liability when habitat quality deteriorates. We describe the effects of limited breeding opportunities in source and sink populations. Under a wide range of conditions, sink populations may have a positive influence on metapopulation size, but a point is reached where the metapopulation is limited solely by production in the source habitats. The complexity of these dynamics suggests that habitat-specific or patch-specific demographic variables are needed in order to understand population dynamics in heterogeneous landscapes.

Url:

https://api.istex.fr/document/29EA71C1BCF003EF5C7C46611FC282DC69F71C9C/fulltext/pdf

DOI: 10.1016/0040-5809(92)90043-S

Affiliations:

Links toward previous steps (curation, corpus...)

to stream Istex, to step Corpus: 001435
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to stream Istex, to step Checkpoint: 005310
to stream Main, to step Merge: 00B878
to stream Main, to step Curation: 00B191

Le document en format XML

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<term>Cambridge univ</term>
<term>Chicago press</term>
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<term>Maximum number</term>
<term>Metapopulation</term>
<term>Metapopulation dynamics</term>
<term>Metapopulation size</term>
<term>Metapopulations</term>
<term>More individuals</term>
<term>National parks</term>
<term>Natural selection</term>
<term>Nonzero</term>
<term>Other hand</term>
<term>Plant populations</term>
<term>Population dynamics</term>
<term>Population ecology</term>
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<term>Cambridge univ</term>
<term>Chicago press</term>
<term>Constant environments</term>
<term>Critical thresholds</term>
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<term>Dispersal behavior</term>
<term>Dispersal term</term>
<term>Dynamics</term>
<term>Equilibrium</term>
<term>Equilibrium configuration</term>
<term>Equilibrium point</term>
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<term>Habitat pair</term>
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<term>Metapopulation dynamics</term>
<term>Metapopulation size</term>
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<term>Previous section</term>
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<front><div type="abstract" xml:lang="en">Abstract: Demographic models of metapopulations show a wide range of outcomes depending upon life history and dispersal parameters. In this paper we analyze metapopulations consisting of demographically viable (source) and demographically non-viable (sink) subpopulations. Our analysis identifies conditions under which intrinsic dispersal may have positive, negative, or no effect on metapopulation size. While genetically based dispersal behavior might have selective advantages at the level of the individual, it may become a liability when habitat quality deteriorates. We describe the effects of limited breeding opportunities in source and sink populations. Under a wide range of conditions, sink populations may have a positive influence on metapopulation size, but a point is reached where the metapopulation is limited solely by production in the source habitats. The complexity of these dynamics suggests that habitat-specific or patch-specific demographic variables are needed in order to understand population dynamics in heterogeneous landscapes.</div>
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Juvenile dispersal, limited breeding sites, and the dynamics of metapopulations

Juvenile dispersal, limited breeding sites, and the dynamics of metapopulations

Source :

Descripteurs français

English descriptors

Abstract

Links toward previous steps (curation, corpus...)

Le document en format XML

Pour manipuler ce document sous Unix (Dilib)

Pour mettre un lien sur cette page dans le réseau Wicri