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Community ecology homework shortest answer if possible

Environmental Science
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5.      What does the theory of island biogeography tell us about the number of species on- small versus large islands and those near versus far from the mainland or one far from it? 

 

Apr 14th, 2015

Island biogeography is the study of the species composition and species richness on islands. The equilibrium value (equilibrium diversity value) of an island based on the area of the island- the larger the area the more resources there are on the island. Smaller islands support smaller populations, and smaller populations are more expected to turn into wiped out. Here is where theTarget Effect comes in play. The Target Effect says that larger islands have higher migration rates as they are a larger target. Islands have less varied populations than large continents, particularly those far from mainland. Such islands have less opportunity for colonization.

http://en.wikibooks.org/wiki/Ecology/Island_biogeography


Apr 14th, 2015

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