Most protected areas are small and isolated patches

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Unformatted text preview: tedness of habitat patches The smaller the area of the patch, the smaller the popula6ons it can sustain, making it more likely for a species to go locally ex6nct When species go locally ex6nct in a very isolated habitat patch, recoloniza6on from a different, distant patch gets increasingly unlikely, causing progressive loss of species from the patch To date, only few of the Biodiversity Hotspot regions are protected. Most protected areas are small, and isolated patches. America's na6onal parks are at risk of disappearing or being fundamentally changed as seas rise, glaciers melt, trees die and changes in the ranges of animals and plants as a result of climate change. hHp:// climate- change- threatens.html#ixzz1frdafAt0 Combating Habitat Fragmentation Today human- induced habitat loss and fragmenta6on are seen to be major threats to biodiversity conserva6on. One way of mi6ga6ng the nega6ve effects of fragmenta6on is to improve habitat connec6vity. Biodiversity corridors can be con6nuous strips of land or 'stepping stones' that are patches of suitable habitat used to improve ecological coherence and for comba6ng fragmenta6on. They provide...
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This note was uploaded on 01/30/2014 for the course IB 105 taught by Professor Caceres during the Fall '08 term at University of Illinois, Urbana Champaign.

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