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Biogeography of alien vertebrates in the Galapagos Islands : patterns, processes, and conservation implications


Please use this identifier to cite or link to this item: http://hdl.handle.net/1928/12104

Biogeography of alien vertebrates in the Galapagos Islands : patterns, processes, and conservation implications

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dc.contributor.author Phillips, Reese Brand
dc.date.accessioned 2011-02-09T20:00:24Z
dc.date.available 2011-02-09T20:00:24Z
dc.date.issued 2011-02-09
dc.date.submitted December 2010
dc.identifier.uri http://hdl.handle.net/1928/12104
dc.description.abstract Alien species are one of the principal threats to global biodiversity. Insular ecosystems have proven exceptionally susceptible to invasion by aliens and vulnerable to their negative effects. Some of the most destructive alien species are vertebrates, in part due to their having been introduced to islands worldwide. Rodents (Rattus spp. and Mus musculus) are among the most widespread and devastating invasive species for insular flora and fauna. In this research I investigate the biogeographic patterns and processes of alien vertebrates in the Galapagos Islands, focusing on the mechanisms that influence their dispersal and colonization within the archipelago. In the first study, I review and synthesize the available literature on alien vertebrates in the Galápagos. I investigate the impacts to the native flora and fauna from alien vertebrates and the spatial and temporal patterns of colonization in the archipelago. I summarize management efforts directed at alien vertebrates and assess the potential future impacts to the Galapagos from alien vertebrates. In the second study, I examine the distribution of the three alien rodents from a biogeographic perspective. Island area and isolation from a source population are examined to determine the influence of these landscape features on the incidence of a rodent species on an island. In the third study, I conduct a multivariate analysis of the biotic and abiotic factors influencing intra-archipelago dispersal and colonization of two alien rodents. Using this analysis the probability of an alien rodent occurring on an island is determined and the risk of invasion to other islands is estimated. en_US
dc.language.iso en_US en_US
dc.subject alien species en_US
dc.subject black rat en_US
dc.subject distribution en_US
dc.subject Galápagos Islands en_US
dc.subject house mouse en_US
dc.subject invasion en_US
dc.subject modeling en_US
dc.subject Norway rat en_US
dc.subject vertebrates en_US
dc.subject.lcsh Introduced vertebrates--Galapagos Islands--Geographical distribution.
dc.subject.lcsh Rodents--Galapagos Islands--Geographical distribution.
dc.title Biogeography of alien vertebrates in the Galapagos Islands : patterns, processes, and conservation implications en_US
dc.type Dissertation en_US
dc.description.degree Biology en_US
dc.description.level Doctoral en_US
dc.description.department University of New Mexico. Biology Dept. en_US
dc.description.advisor Snell, Howard L.
dc.description.committee-member Brown, James H.
dc.description.committee-member Milne, Bruce T.
dc.description.committee-member Dowler, Robert C.

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