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Unformatted text preview: where conditions are less optimal, include the zone of physiological stress (where individuals are rare), and eventually the zone of intolerance (where individuals are not found). The environment is usually never uniform enough to support uniform distribution of a species. Species thus have a dispersion pattern. Three patterns found include uniform, clumped, and random. Geographic ranges of species are dynamic, over time they can contract or expand due to environmental change or human activity. Often a species will require another species' presence, for example Drosophila in Hawaii. Species ranges can also expand due to human actions: brown trout are now found worldwide because of the sprerad of trout fishing....
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This note was uploaded on 11/29/2011 for the course BIO BSC1010 taught by Professor Gwenhauner during the Fall '10 term at Broward College.
- Fall '10