Habitat fragmentation is a process of environmental change important in evolution and conservation biology. As the name implies, it describes the emergence of discontinuities (fragmentation) in an organism's preferred environment (habitat). Habitat fragmentation can be caused by geological processes that slowly alter the layout of the physical environment or by human activity which can alter the environment on a much, much faster time scale. The former is suspected of being one of the major causes of speciation. The latter has been implicated in the extinction of many species.
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Example Usage of fragmentation
soulhuntre: Considering an internet biz blog. Marketing and social media. But I can roll it into my clod blog? When is a niche just fragmentation?
802dotchris: @biz_mobility not following WinMo comparison; Android fragmentation may stymie planned IT support for incoming holiday crop of 'droid phones
biz_mobility: can Google head off the fragmentation rampant in Android? Not so sure. what do you think? (via @dkerrsa) Nope. It will be the new WinMo