Sources and sinks in population biology
Identifieur interne : 00A126 ( Main/Curation ); précédent : 00A125; suivant : 00A127Sources and sinks in population biology
Auteurs : Paula C. Dias [France]Source :
- Trends in Ecology & Evolution [ 0169-5347 ] ; 1996.
Descripteurs français
- Wicri :
- topic : écologie, Habitat, Migration, Dynamique de la population.
English descriptors
- KwdEn :
- Adaptive, Adaptive evolution, Aquatic ecology, Asymmetric migration, Blue tits, Chapman hall, Death rates, Deciduous, Demographic deficit, Demographic parameters, Dispersal, Dynamics, Ecol, Ecological, Ecology, Empirical studies, Euol, Evergreen habitat, Evolutionary stability, Extinction, Ficedula hypoleuca, Food availability, Fresh water, Fundamental niche, Gene flow, Genetic variability, Habitat, Habitat quality, Habitat selection, Heterogeneous environments, Holt, Inversion, Local communities, Lowland, Maladaptation, Migration, Mike singer, Mike whitlock, Mosquito fish, Niche, Niche conservatism, Nova scotia, Oscar gaggiotti, Passive dispersal, Patchy environment, Phenotypic plasticity, Population counts, Population dynamics, Population size, Rain forest, Recent research, Regional processes, Small fragments, Small mammals, Source habitat, Source habitats, Source population, Southern france, Species diversity, Stable maladaptations, Tit, Total population size.
- Teeft :
- Adaptive, Adaptive evolution, Aquatic ecology, Asymmetric migration, Blue tits, Chapman hall, Death rates, Deciduous, Demographic deficit, Demographic parameters, Dispersal, Dynamics, Ecol, Ecological, Ecology, Empirical studies, Euol, Evergreen habitat, Evolutionary stability, Extinction, Ficedula hypoleuca, Food availability, Fresh water, Fundamental niche, Gene flow, Genetic variability, Habitat, Habitat quality, Habitat selection, Heterogeneous environments, Holt, Inversion, Local communities, Lowland, Maladaptation, Migration, Mike singer, Mike whitlock, Mosquito fish, Niche, Niche conservatism, Nova scotia, Oscar gaggiotti, Passive dispersal, Patchy environment, Phenotypic plasticity, Population counts, Population dynamics, Population size, Rain forest, Recent research, Regional processes, Small fragments, Small mammals, Source habitat, Source habitats, Source population, Southern france, Species diversity, Stable maladaptations, Tit, Total population size.
Abstract
Abstract: The various habitats inhabited by a given species are never of the same quality. When demographic models take into account this habitat heterogeneity, the source-sink concept naturally emerges: a local demographic surplus arises in good quality habitats (source), and a local demographic deficit occurs in habitats of poor quality (sink). Within a landscape, a permanent migration of propagules or individuals from source to sink habitats may lead to a stabilization of the overall demographic system. This simple situation, explored in the recent literature, has surprising properties. In particular, it requires a change in our view of classical concepts such as ecological niche and carrying capacity, it can explain the existence and persistence of local maladaptation and it can improve conservation practice.
Url:
DOI: 10.1016/0169-5347(96)10037-9
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ISTEX:B6B814D445FB36F8F16FE1AC671CE348B2264E73Le document en format XML
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<term>Adaptive evolution</term>
<term>Aquatic ecology</term>
<term>Asymmetric migration</term>
<term>Blue tits</term>
<term>Chapman hall</term>
<term>Death rates</term>
<term>Deciduous</term>
<term>Demographic deficit</term>
<term>Demographic parameters</term>
<term>Dispersal</term>
<term>Dynamics</term>
<term>Ecol</term>
<term>Ecological</term>
<term>Ecology</term>
<term>Empirical studies</term>
<term>Euol</term>
<term>Evergreen habitat</term>
<term>Evolutionary stability</term>
<term>Extinction</term>
<term>Ficedula hypoleuca</term>
<term>Food availability</term>
<term>Fresh water</term>
<term>Fundamental niche</term>
<term>Gene flow</term>
<term>Genetic variability</term>
<term>Habitat</term>
<term>Habitat quality</term>
<term>Habitat selection</term>
<term>Heterogeneous environments</term>
<term>Holt</term>
<term>Inversion</term>
<term>Local communities</term>
<term>Lowland</term>
<term>Maladaptation</term>
<term>Migration</term>
<term>Mike singer</term>
<term>Mike whitlock</term>
<term>Mosquito fish</term>
<term>Niche</term>
<term>Niche conservatism</term>
<term>Nova scotia</term>
<term>Oscar gaggiotti</term>
<term>Passive dispersal</term>
<term>Patchy environment</term>
<term>Phenotypic plasticity</term>
<term>Population counts</term>
<term>Population dynamics</term>
<term>Population size</term>
<term>Rain forest</term>
<term>Recent research</term>
<term>Regional processes</term>
<term>Small fragments</term>
<term>Small mammals</term>
<term>Source habitat</term>
<term>Source habitats</term>
<term>Source population</term>
<term>Southern france</term>
<term>Species diversity</term>
<term>Stable maladaptations</term>
<term>Tit</term>
<term>Total population size</term>
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<term>Adaptive evolution</term>
<term>Aquatic ecology</term>
<term>Asymmetric migration</term>
<term>Blue tits</term>
<term>Chapman hall</term>
<term>Death rates</term>
<term>Deciduous</term>
<term>Demographic deficit</term>
<term>Demographic parameters</term>
<term>Dispersal</term>
<term>Dynamics</term>
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<term>Ecological</term>
<term>Ecology</term>
<term>Empirical studies</term>
<term>Euol</term>
<term>Evergreen habitat</term>
<term>Evolutionary stability</term>
<term>Extinction</term>
<term>Ficedula hypoleuca</term>
<term>Food availability</term>
<term>Fresh water</term>
<term>Fundamental niche</term>
<term>Gene flow</term>
<term>Genetic variability</term>
<term>Habitat</term>
<term>Habitat quality</term>
<term>Habitat selection</term>
<term>Heterogeneous environments</term>
<term>Holt</term>
<term>Inversion</term>
<term>Local communities</term>
<term>Lowland</term>
<term>Maladaptation</term>
<term>Migration</term>
<term>Mike singer</term>
<term>Mike whitlock</term>
<term>Mosquito fish</term>
<term>Niche</term>
<term>Niche conservatism</term>
<term>Nova scotia</term>
<term>Oscar gaggiotti</term>
<term>Passive dispersal</term>
<term>Patchy environment</term>
<term>Phenotypic plasticity</term>
<term>Population counts</term>
<term>Population dynamics</term>
<term>Population size</term>
<term>Rain forest</term>
<term>Recent research</term>
<term>Regional processes</term>
<term>Small fragments</term>
<term>Small mammals</term>
<term>Source habitat</term>
<term>Source habitats</term>
<term>Source population</term>
<term>Southern france</term>
<term>Species diversity</term>
<term>Stable maladaptations</term>
<term>Tit</term>
<term>Total population size</term>
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<front><div type="abstract" xml:lang="en">Abstract: The various habitats inhabited by a given species are never of the same quality. When demographic models take into account this habitat heterogeneity, the source-sink concept naturally emerges: a local demographic surplus arises in good quality habitats (source), and a local demographic deficit occurs in habitats of poor quality (sink). Within a landscape, a permanent migration of propagules or individuals from source to sink habitats may lead to a stabilization of the overall demographic system. This simple situation, explored in the recent literature, has surprising properties. In particular, it requires a change in our view of classical concepts such as ecological niche and carrying capacity, it can explain the existence and persistence of local maladaptation and it can improve conservation practice.</div>
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