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The spatial ecology of Galapagos tortoises and New Mexico's reptiles


Please use this identifier to cite or link to this item: http://hdl.handle.net/1928/12077

The spatial ecology of Galapagos tortoises and New Mexico's reptiles

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dc.contributor.author Giermakowski, Jacek Tomasz
dc.date.accessioned 2011-02-08T23:12:04Z
dc.date.available 2011-02-08T23:12:04Z
dc.date.issued 2011-02-08
dc.date.submitted December 2010
dc.identifier.uri http://hdl.handle.net/1928/12077
dc.description.abstract The analysis of spatial processes and spatial heterogeneity is an important part of ecology because distribution of organisms in space partly defines ecology as a discipline. In addition, advances in analysis of DNA, geographical computing and the availability of vast amounts of environmental data obtained by satellites provide new opportunities for studying ecology at different spatial and phylogenetic scales. My research takes advantage of information gathered by satellites and adds modeling and data collected on the distribution of different reptiles to examine processes at various spatial and temporal scales. In Chapter 1 I describe how juvenile Galapagos tortoises change their patterns of distribution as they grow. These patterns relate to different levels of productivity of vegetation, but that relationship is only evident for older juveniles. In Chapter 2, I examine body sizes in different taxa of Galapagos tortoises from an evolutionary and ecological perspective. While body sizes of adults of different taxa of tortoises covary with primary productivity, I did not find any association between body size and phylogeny of these tortoise taxa. In Chapter 3 I develop and field-test a method for modeling the potential distribution of species. I focus on reptiles in New Mexico and describe a multivariate technique that allows comparison of the suitability of landscape for different species between different areas. Maps produced with this method can be used for planning inventory and monitoring of species at coarse spatial scales and can help in identifying conservation opportunities. en_US
dc.description.sponsorship University of New Mexico, New Mexico Department of Game and Fish, Charles Darwin Research Station, Galapagos National Park Service en_US
dc.language.iso en_US en_US
dc.subject distribution en_US
dc.subject modeling en_US
dc.subject body-size en_US
dc.subject productivity en_US
dc.subject movement en_US
dc.subject.lcsh Galapagos tortoise--Ecology.
dc.subject.lcsh Galapagos tortoise--Geographical distribution.
dc.subject.lcsh Reptiles--New Mexico--Geographical distribution--Mathematical models.
dc.title The spatial ecology of Galapagos tortoises and New Mexico's reptiles 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 Wolf, Blair O
dc.description.committee-member Turner, Thomas F
dc.description.committee-member Peterson, Charles R

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