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- Title
LINKING DEMOGRAPHIC EFFECTS OF HABITAT FRAGMENTATION ACROSS LANDSCAPES TO CONTINENTAL SOURCE-SINK DYNAMICS.
- Authors
Lloyd, Penn; Martin, Thomas E.; Redmond, Roland L.; Langner, Ute; Hart, Melissa M.
- Abstract
This article discusses the links between demographic effects of habitat fragmentation across landscapes and continental source-sink dynamics. Deforestation and the conversion of forests to other land uses have paralleled the development of human societies throughout the world. Deforestation and related fragmentation of landscapes can impinge on ecological processes that influence the population growth potential of organisms, particularly birds. Broad assessment is particularly critical because the effects of fragmentation on parasitism and predation are hypothesized to operate within a spatial hierarchy that includes biogeographic, landscape, and patch-level effects. At the patch scale, brood parasitism and nest predation are expected to be greater closer to forest edges, as parasites and many generalist predators principally occupy agricultural habitats adjoining forest. Broad tests of such scale effects are lacking because of an absence of replicated landscape studies, due to the logistical difficulties of measuring nesting parameters in multiple landscapes.
- Subjects
FRAGMENTED landscapes; DEFORESTATION; ENVIRONMENTAL degradation; PARASITES; HABITATS; PREDATION; ECOLOGY
- Publication
Ecological Applications, 2005, Vol 15, Issue 5, p1504
- ISSN
1051-0761
- Publication type
Article
- DOI
10.1890/04-1243