lecture 10 2009

lecture 10 2009 - Zoogeography (study of the distribution...

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Zoogeography (study of the distribution of animals)
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Definitions Biogeography - study of the distribution patterns of living organisms Zoogeography - study of animal distribution (and richness) patterns Phytogeography - study of plant distribution patterns Richness = total number of species Abundance = number of individuals
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Questions zoogeographers ask 1) Are there patterns to species distributions? 2) What determines the extent of a species range? 3) How are population dynamics and the extent of the range related? 4) Are there patterns to species richness?
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General patterns of distribution 1) Most species occur on only one continent 2) Distribution differs across taxonomic groups 3) Matches between patterns of species occurrence and geographical barriers suggest the world can be divided into Zoogeographic realms
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Terminology to describe species ranges 1) Endemic species: native and confined to a defined area 2) Indigenous species: native to a defined area but may also be found elsewhere 3) Exotic species:
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lecture 10 2009 - Zoogeography (study of the distribution...

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