BIOL 2600 Study Guide - Final Guide: Factor Analysis, Hypolimnion, Competitive Exclusion Principle
12 Dec 2015
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Document Summary
Whittaker"s principle of species individuality each species distributed according to physio needs most communities intergrade continuously and competition does not create distinct zones: diversity indices. Used to measure diversity through species richness and real abundance. Dominance indices mostly effected by most dominant species. Gini simpson and berger parker they range from 0 to 1 (most diverse when species have equal numb individuals (50. Information statistic indices mostly effected by more rare species. Shannon weiner / brillouin ranging diversity from 0 to lns (diff to compare assemblages: rank abundance curves. Used to measure and describe how species apportion resources. Dom pre emp model in which species have dissimilar competitive ability, the greatest abundance gets the first 50% (greatest proportion of resource) then the next takes 50% of what"s left etc. seen in stressed enviro. Broken stick species have similar competitive ability and breaking up of limited resource is random size of resource obtained is usually = to abundance.
