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Unformatted text preview: d’Ottawa / University of Ottawa 2012 M9.3 BIO 3115 Conservation Biology 2009-2010 Mechanisms of extirpation as a result
of habitat loss and fragmentation loss of habitat heterogeneity (some habitats lost)
reduced migration between fragments due to
colonization of fragments by new species (e.g.
exotics) that would otherwise be excluded,
resulting in increased competition, predation or
secondary extinctions; fragmentation may
disrupt important ecological relationships which
may lead to subsequent (secondary) extinctions M9.7
BIO 3115 Université d’Ottawa / University of Ottawa 2012 Fragmentation and island biogeography
theory I: Fragment size Since species
…if fragments are
should increase with
fragment size. 100 Number of species Hispaniola
Puerto Rico Cuba
0.1 10 1000 100000 Area (square miles)
BIO 3115 Université d’Ottawa / University of Ottawa 2012 M9.4 BIO 3115 Conservation Biology 20...
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This document was uploaded on 03/11/2014 for the course BIO 3115 at University of Ottawa.
- Winter '14
- Conservation Biology