BiogeographyBiogeography, Second Edition combines ecological and historical perspectives to show how contemporary environments, earth history, and evolutionary processes have shaped the distributions of species and the patterns of biodiversity. It illustrates general patterns and processes using examples from different groups of plants and animals from diverse habitats and geographic regions. Written primarily for use in undergraduate and graduate courses in plant and/or animal geography, the book serves as a general synthesis and reference as well. |
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Page 168
... Allopatric speciation . The simplest way to model speciation is to assume that genetic dif- ferentiation cannot lead to new species unless the populations are geographically isolated , so that gene flow between them is virtually cut off ...
... Allopatric speciation . The simplest way to model speciation is to assume that genetic dif- ferentiation cannot lead to new species unless the populations are geographically isolated , so that gene flow between them is virtually cut off ...
Page 169
... Speciation by geographic isolation . A once widespread species ( stage 1 ) becomes subdivided into two isolated populations by the formation of a geographic barrier ( stages 2 and ... Allopatric speciation by 6 Speciation and extinction 169.
... Speciation by geographic isolation . A once widespread species ( stage 1 ) becomes subdivided into two isolated populations by the formation of a geographic barrier ( stages 2 and ... Allopatric speciation by 6 Speciation and extinction 169.
Page 170
... Allopatric speciation by disjunct founders ( the founders principle ) may occur following colonization of isolated habitats , such as oceanic islands . A mainland version of allopatric speciation by the founder principle may be ...
... Allopatric speciation by disjunct founders ( the founders principle ) may occur following colonization of isolated habitats , such as oceanic islands . A mainland version of allopatric speciation by the founder principle may be ...
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Common terms and phrases
adapted adaptive radiation Africa angiosperms animals aquatic areas Australasia Australia barriers biogeographic biotas biotic Cenozoic changes Chapter cies cladistic cladogram climate colonization communities competition continental continental drift continents Cretaceous desert disjunctions distributions drift eastern ecological elevation endemic environment Eocene Eurasia evolution evolutionary example extinction families fauna Figure fishes forms fossil record freshwater genera geographic ranges geologic Gondwanaland groups Guinea habitats inhabiting insects insular interactions isolated lakes land bridge landmasses latitudes limited living long-distance dispersal MacArthur Madagascar mainland major mammals marine Mesozoic migration million years BP mountain Neotropics niches North Northern Hemisphere number of species occur oceanic islands organisms origin Pacific Paleocene patterns phylogenetic plants plate Pleistocene polyploidy populations predators present radiation rain forest reconstructions regions relationships relatively Simberloff similar soil South America southern speciation species richness taxa taxon taxonomic temperate temperature terrestrial tion tropical vegetation vicariance World zone