BIOLOGY 2F03 Chapter Notes - Chapter 16: Diversity Index, Wiener Index, Log-Normal Distribution
20 Mar 2017
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Important information about relative abundance, dominance, and diversity of a species within a community against their rank in abundance. Structural complexity, the niche, and bird species diversity: macarthur warblers study suggests that the vertical structure of the vegetation may influence their distributions, measured relationship between volume of vegetation above 6m and the abundance of warblers. Si limited --> asterionella won: p limited --> cyclotella dominant. Supports niche theory: focusing on a single species can reveal patterns of community structure. Some species enhance the growth of others by reducing soil salinity or modifying the thermal environment. Larval caddisflies feeding rate was significantly higher in mixed species treatment relative to the single species treatment due to flow rate (single species meant rougher flow, slower movement: sampling effect. Species differ in their inherent rates of delivery of some ecological service. Some plant species are more productive than others and some microbes result in faster nitrogen cycling than others.
