9 - Habitat loss and fragmentation

18 bio 3115 conservation biology 2009 2010

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Unformatted text preview: iversité d’Ottawa / University of Ottawa 2012 Loss of non-forested habitat Country or region North America Sri Lanka United Kingdom Nigeria Paraguay South Africa Habitat type Original extent (km2) Tallgrass 1,430,000 prairie Thorn scrub 19,800 Heathland 1,432 Mangrove 24,440 Chaco 320,000 Fynbos 75,000 % remaining 1 25 27 50 57 67 M9.38 BIO 3115 Université d’Ottawa / University of Ottawa 2012 M9.19 BIO 3115 Conservation Biology 2009-2010 Loss of wetlands in selected states of the U.S.A. % wetland remaining: 1-5 5-12 12-25 25-50 50-55 M9.39 BIO 3115 Université d’Ottawa / University of Ottawa 2012 Historical trends in wetland loss in the U.S.A. State California Ohio Iowa Illinois South Carolina West Virginia Maine Alaska Wetland in Wetland in 1780’s (km2) 1980s (km2) % loss 20,000 20,000 16,200 33,000 25,960 1,837 1954 1707 5077 18,855 91 90 89 85 27 540 413 24 26,140 688,790 21,041 687,980 20 .1 M9.40 BIO 3115 Université d’Ottawa / University of Ottawa 2012 M9.20 BIO 3115 Conservation Biology 2009-2010 Anthropogenic causes of wetland loss and...
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