BIOL 331 Lecture Notes - Marine Biology, Species Pool, Insular Biogeography

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Biome is a terrestrial environment defined by the growth forms of its plants. Species richness the number of species present in its communities. Temperate deciduous forest: found in eastern n. america, e. asia, and europe, temperatures fluctuate dramatically and precipitated is evenly distributed, deciduous trees dominate these forests, more trees live here than in boreal forests. Biogeography: the study of the patterns of distribution of populations, species, and ecological communities across earth. Biogeographic regions are based on the taxonomic composition of the organism living in them; boundaries are set where species compositions change dramatically over short distances. Species found only within a certain region is said to be endemic to that region. Remote islands typically have distinctive endemic biotas b/c water barriers greatly restrict immigration. Three scientific advances changed the field of biogeography. Three scientific advances changed biogeography into the field it is today: 1. Acceptance of the theory of continental drift, 2. the development of phylogenetic taxonomy, 3.

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