BIOL 353 Study Guide - Midterm Guide: Niche Differentiation, Zoogeography, Insular Biogeography
11 Sep 2017
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Document Summary
Color differences depict the amount of regoins by combining data on the distributions and phylogenetic relatinoships of amphibians, birds and mammals 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. Explain the latitudinal gradient of species richness. Spatial and temporal niche partitioning in grassland ants. Measured patterns of spatial and temporal niche overlap of ants. On a seasonal (monthly) scale, niche overlap and pairwise species associations were random or aggregated, probably due to thermal constraints on ectotherms foraging in a seasonal environment. Within the warmer months of the year diurnal niche partitioning.
