EVSC 1200 Lecture Notes - Lecture 1: Beetle, Species Richness, Extinction Event
18 Feb 2016
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Document Summary
Dominance: if a species is found to predominate (large proportion of the total number of individuals) in a community it is defined as a dominant species. Species richness number of different species found in a location or community. If there are 5 species in a community, then our species richness would be five. Species evenness relative abundance of individuals among the species. Relative dominance of a specific species relative proportion. The species richness can be consistent across several communities, but the proportion of these species may be different within each. The greatest number of species normally falls under the insects category (coleoptera, lepidoptera, hymenoptera) Current estimates of the total number of species on the planet run in the 10s of millions estimates are extrapolated. Most of these unknown species are going to be small things that we have not yet identified.
