9 - Habitat loss and fragmentation

13 bio 3115 universit dottawa university of ottawa

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Unformatted text preview: pulation dynamics of the Bay checkerspot butterfly Found in fragmented serpentine grasslands in San Francisco area. Populations persist only in small fragments close to the source (Morgan Hill) due to constant immigration. Morgan Hill Persistent populations 10 km M9.14 BIO 3115 Université d’Ottawa / University of Ottawa 2012 M9.7 BIO 3115 Conservation Biology 2009-2010 Centinela Ridge, Western Equador Consequences of habitat loss and fragmentation I: loss of endemics Almost 80 endemic plants species lost due to cutting of single forest ridge in early 1980s. Number of endemic plant species 1 km2 100 80 1975 60 40 20 1985 0 M9.15 BIO 3115 Université d’Ottawa / University of Ottawa 2012 Area-sensitive species Species which require relatively large areas of habitat for survival. Includes species with large home ranges, most notably large carnivores. Habitat loss and degradation through fragmentation has a potentially great impact on area-sensitive species M9.16 BIO 3115 Université d’Ottawa / University of Ottawa 2012 M9.8 BIO 3115 Conservati...
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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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