PLSC 213 Lecture Notes - Lecture 17: Gamma Diversity, Alpha Diversity, Physiognomy

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15 Apr 2019
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Population of one or more plant species coexisting in space and time. Populations in a community are potentially (but not necessarily) interacting. Can be de ned based on the variety of scales, such as an individual plant neighbourhood, or local landscape scale. Early conceptions were rigid and based on problematic theory. Predictable and consistent grouping of species exist. Number of species in sample lot area. Rate of species change along environmental gradient. Number of species in a habitat. geographic area. Alpha diversity will never succeed gamma diversity. Shows if a site is dominant by one species with many minor species or id there are many co dominant species. The ecological function of a location if going to be di erent of one species is dominating the site or many species are co dominant. Diversity indicates: incorporates species richness and evenness into single value. It measures the vertical structure and complexity. Processes that produce these assemblages throned assembly rules.

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