ENSC 320 Lecture Notes - Lecture 7: E. O. Wilson, Microclimate, Canadian Shield
21 Apr 2017
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Document Summary
The resources and conditions present in an area that result in occupancy by a species. Typically thought of as natural vegetation, but also resources - including food, cover, water and other factors required by a species for survival and reproduction reproduction. Process by which natural habitat is rendered ineffective in supporting the community of species once found there. The single factor most responsible for the current high rates of biodiversity loss and wildlife population declines over the last century. Without habitat, populations decline and eventually species go extinct. 50% of recent continental bird extinctions and most plant extinctions. >80% of all endangered bird species threatened due to habitat loss. In eastern and midwestern us, less than 25% of native ecosystems remained. Since beginning of the 19th century, 75% of original ontario wetlands south of. Precambrian shield have been lost and less than 20% of total landscape remains in upland forest. Many southwestern ontario countries have experienced >90% deforestation.
