BIOLOGY 2F03 Chapter Notes - Chapter 16: Log-Normal Distribution, Species Evenness, Ecological Niche
22 Sep 2016
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Community an association of potentially interacting species inhabiting some defined area, at some particular scale, over some particular span of time. Community structure attributes such as the number of species, the relative abundance of species and the kinds of species comprising a community. Combination of the number of species and their relative abundance. Relative abundance of the different species within a community. Measuring diversity of the entire region (grassland, wetland, forest, etc. ) Differences between communities within the region of landscape. Group of organisms making their living in a similar way. So the first picture and the second have the same species richness. H = value of the diversity index. S = the number of species in the community. The minimum value of h is 0, which is the value of h for a community with a single species, and increases as species richness and species evenness increase: pielou"s measure of evenness (j)
