Dispersal mode mediates the effect of patch size and patch connectivity on metacommunity diversity
نویسندگان
چکیده
منابع مشابه
Evolution of density- and patch-size-dependent dispersal rates.
Based on a marginal value approach, we derive a nonlinear expression for evolutionarily stable (ES) dispersal rates in a metapopulation with global dispersal. For the general case of density-dependent population growth, our analysis shows that individual dispersal rates should decrease with patch capacity and-beyond a certain threshold-increase with population density. We performed a number of ...
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Increased dispersal of individuals among discrete habitat patches should increase the average number of species present in each local habitat patch. However, experimental studies have found variable effects of dispersal on local species richness. Priority effects, predators, and habitat heterogeneity have been proposed as mechanisms that limit the effect of dispersal on species richness. Howeve...
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چکیده ندارد.
15 صفحه اولFragmented landscapes, road mortality and patch connectivity: modelling influences on the dispersal of Eurasian lynx
STEPHANIE KRAMER-SCHADT*†, ELOY REVILLA*‡, THORSTEN WIEGAND* and URS BREITENMOSER§ *Department of Ecological Modelling, UFZ Centre for Environmental Research, Permoser Str. 15, D-04318 Leipzig, Germany; †Department für Ökologie, Lehrstuhl für Landschaftsökologie, Technische Universität München, Am Hochanger 6, D-85350 Freising-Weihenstephan, Germany; ‡Department of Applied Biology, Estación Bio...
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One of the central questions of metacommunity theory is how dispersal of organisms affects species diversity. Here, we show that the diversity-dispersal relationship should not be studied in isolation of other abiotic and biotic flows in the metacommunity. We study a mechanistic metacommunity model in which consumer species compete for an abiotic or biotic resource. We consider both consumer sp...
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ژورنال
عنوان ژورنال: Journal of Ecology
سال: 2015
ISSN: 0022-0477
DOI: 10.1111/1365-2745.12405