9 - Habitat loss and fragmentation

25 bio 3115 universit dottawa university of ottawa

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Unformatted text preview: agment 100 m M9.26 BIO 3115 Université d’Ottawa / University of Ottawa 2012 M9.13 BIO 3115 Conservation Biology 2009-2010 Bird species richness in isolated and undisturbed tropical moist forest richness is reduced both in the fragment and at the forest edge. 60 Number of species 50 m 50 40 10 m 30 20 10 0 Intact forest Forest edge Forest fragment M9.27 BIO 3115 Université d’Ottawa / University of Ottawa 2012 Bird population densities in isolated and undisturbed tropical moist forest population densities are also depressed in forest edges and forest fragments. 180 160 Number of individuals 140 50 m 120 100 10 m 80 60 40 20 0 Intact forest Forest edge Forest fragment M9.28 BIO 3115 Université d’Ottawa / University of Ottawa 2012 M9.14 BIO 3115 Conservation Biology 2009-2010 Reduction in habitat area through fragmentation and edge effects edge effects extend 100 m. bisection by roads reduces interior habitat by half, even though little area is used by roads. Edge habitat 64 ha Interior...
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