BIOL 353 Study Guide - Midterm Guide: Introduced Species, Omnivore, Arthropod
6 Mar 2018
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Document Summary
Generated a global map of zoogeographic regions by combining data on the distributions and. L3 holt et al phylogenetic relationships of amphibians, birds and mammals. Color differences depict the amount of phylogenetic turnover among realms. Define ecoregions as relatively large units of land containing a distinct assemblage of natural communities and species, with boundaries that approximate the original extend of natural communities prior to major land-use change. Ecoregions, representing distinct biotas, are nested within biomes and realms and, together, these provide a framework for comparisons among units and identification of representative habitats and species assemblages. Divides world into 14 biomes and 8 biogeographic realms. Tool for conservation: highlight those areas of the world that are most distinctive or have high representation value and are therefore worthy of greater attention. Ecoregions were ranked by the distinctiveness of their biodiversity features species endemism, the rarity of higher taxa, species richness, unusual ecological or evolutionary phenomena, and global rarity of their habitat type.
