Habitat suitability and source-sink dynamics of beavers
نویسندگان
چکیده
منابع مشابه
Source and sink dynamics in meta-ecosystems.
We present a theory extending the source-sink concept with an ecosystem perspective. We analyze a model for meta-ecosystem dynamics in a heterogeneous environment to study how the spatial flows of materials such as inorganic nutrients and nutrients sequestered into producers, herbivores, and detritus affect the community dynamics. We show that spatial flows of an inorganic nutrient (direct nutr...
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Forest fragmentation may cause increased brood parasitism and nest predation of breeding birds. In North America, nest parasitism and predation are expected to increase closer to forest edges because the brood-parasitic Brown-headed Cowbird (Molothrus ater) and generalist nest predators often enter the forest from adjoining developed (largely agricultural) habitats. Yet the abundance of brood p...
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Investigation of ecological, hydrological status and habitat Suitability of river is one of the key elements in river ecosystem management. In this regard, in the present study, in order to evaluate the ecological sustainable conditions in Zarrin-Gol River of Golestan Province, during stepwise calculations, echo-hydraulic and hydromorphocological analysis of the habitat of Capoeta gracilis (Ke...
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متن کاملAn empirical test of source–sink dynamics induced by hunting
1. Under the source–sink model, persistence of populations in habitat sinks, where deaths outnumber births, depends on dispersal from high-quality habitat sources, where births outnumber deaths. The persistence of the regional population depends on the proportion of sink relative to source habitat. 2. Hunting that occurs in some parts of the landscape and not in others can create patches where ...
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ژورنال
عنوان ژورنال: Journal of Animal Ecology
سال: 2001
ISSN: 0021-8790
DOI: 10.1111/j.1365-2656.2001.00492.x