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A Statistical Analysis of Marine Mammal Dispersal Routes Across Major Ocean Regions Using Beta Diversity at the Generic Level

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dc.contributor.advisor Uhen, Mark D.
dc.contributor.author Peredo, Carlos Mauricio
dc.creator Peredo, Carlos Mauricio
dc.date 2015-04-22
dc.date.accessioned 2015-08-19T12:44:47Z
dc.date.available 2015-08-19T12:44:47Z
dc.date.issued 2015-08-19
dc.identifier.uri https://hdl.handle.net/1920/9763
dc.description.abstract Using the Paleobiology Database, the distribution of marine mammal genera was analyzed across geologic time in an effort to isolate dispersal routes. Measurements of beta diversity were used to quantify the overlap between different ocean basins at different points in time. A recently introduced measurement of overlap was analyzed and found to be highly correlated with traditional methods, although conditions causing a deviation from this correlation are presented. Overlap is used to test existing marine mammal dispersal hypotheses. The Strait of Gibraltar was found to play a significant role in the dispersal of cetaceans and sirenians. Conversely, the Central American Seaway was found to play only a minor role in the high overlap values between the Atlantic and Pacific oceans seen in extant taxa. Instead, it is asserted that this overlap is largely the result of Arctic dispersal pathways in the Quaternary.
dc.language.iso en en_US
dc.subject biogeography en_US
dc.subject marine mammals en_US
dc.subject dispersal en_US
dc.subject paleontology en_US
dc.subject paleoecology en_US
dc.title A Statistical Analysis of Marine Mammal Dispersal Routes Across Major Ocean Regions Using Beta Diversity at the Generic Level en_US
dc.type Thesis en
thesis.degree.name Master of Science in Environmental Science and Policy en_US
thesis.degree.level Master's en
thesis.degree.discipline Environmental Science and Policy en
thesis.degree.grantor George Mason University en


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