9 - Habitat loss and fragmentation

3 bio 3115 universit dottawa university of ottawa

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Unformatted text preview: Ottawa / University of Ottawa Habitat loss and fragmentation Habitat loss involves the reduction in the area of a particular habitat over time. Habitat fragmentation involves the breaking up of formerly contiguous habitat into discrete fragments. Usually, the two go hand-in-hand! Habitat loss Habitat fragmentation M9.4 BIO 3115 Université d’Ottawa / University of Ottawa M9.2 BIO 3115 Conservation Biology 2009-2010 The habitat fragmentation process fragmentation begins with gap formation or “perforation” of the landscape. gaps become larger or more numerous, until... …the landscape matrix is dominated by modified habitat, with some original habitat fragments Gap formation Natural habitat Modified habitat M9.5 BIO 3115 Université d’Ottawa / University of Ottawa Effects of habitat fragmentation When a large amount of habitat remains in large fragments, few species are lost … … but as habitat area is reduced (fragments smaller), some species are extirpated as the habitat area and structure is reduced below that required for a viable population. M9.6 BIO 3115 Universit...
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This document was uploaded on 03/11/2014 for the course BIO 3115 at University of Ottawa.

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