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Download Sources, Sinks and Sustainability by Jianguo Liu, Vanessa Hull, Anita T. Morzillo, John A. Wiens PDF

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By Jianguo Liu, Vanessa Hull, Anita T. Morzillo, John A. Wiens

Source-sink theories supply an easy but robust framework for realizing how the styles, tactics and dynamics of ecological platforms range and have interaction over house and time. Integrating a number of learn fields, together with inhabitants biology and panorama ecology, this ebook provides the most recent advances in source-sink theories, tools and functions within the conservation and administration of typical assets and biodiversity. The interdisciplinary staff of authors makes use of certain case reports, cutting edge box experiments and modeling, and complete syntheses to include source-sink rules into study and administration, and explores how sustainability should be accomplished in trendy more and more fragile human-dominated ecosystems. supplying a entire photo of source-sink study in addition to tangible functions to genuine international conservation concerns, this publication is perfect for graduate scholars, researchers, natural-resource managers and coverage makers.

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Passive dispersal in a heterogeneous landscape is a potent mechanism for generating sink populations (Holt 1985). Sea rocket seeds passively waft on the wind. Given the persistent directionality of wind from the ocean, this physical transport process across the dunes is strongly asymmetric, and maintains sink populations. Other dispersal mechanisms can also produce sinks. , fledgling birds) out of high- into low-quality habitats. Pulliam’s assumption should hold for many birds and mammals that contend for territories and actively disperse from their natal habitats because of interference or resource limitation.

It is useful to consider first a limiting case, where we focus on evolution in the sink and ignore evolutionary dynamics outside it. If emigrants get mixed thinly into a very large and spatially widespread external population (what Levin 1976 calls a “bath”), we can assume to a first approximation that no individuals who leave will have descendants represented in the immigrant stream. , imagine passive dispersers living in a mountain stream, with periodic waterfalls along its course dividing it into discrete habitats), with immigrants arriving from “upstream” habitats, and emigrants leaving to enter “downstream” habitats, but with no backflow.

Wood (1998). Making mistakes when predicting shifts in species range in response to global warming. Nature 391(6669):€783–786. DeAngelis, D. L. and W. M. Mooij (2005). Individual-based modeling of ecological and evolutionary processes. Annual Review of Ecology, Evolution, and Systematics 36(1):€147–168. Dennehy, J. , N. A. Friedenberg, R. D. Holt and P. E. Turner (2006). Viral ecology and the maintenance of novel host use. American Naturalist 167(3):€429–439. Dias, P. C. (1996). Sources and sinks in population biology.

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