Cost-Distance Analysis of Connectivity for an Avian Migrant Inhabiting a Fragmented Network
dc.contributor.advisor | Green, M. Clay | en_US |
dc.contributor.author | Simper, William S. | |
dc.contributor.committeeMember | Farquhar, Craig | en_US |
dc.contributor.committeeMember | Ott, James R. | en_US |
dc.contributor.committeeMember | Weckerly, Floyd W. | en_US |
dc.date.accessioned | 2011-03-07T22:07:32Z | |
dc.date.available | 2011-03-07T22:07:32Z | |
dc.date.issued | 2010-12 | en_US |
dc.description.abstract | Dispersal is key to the persistence of metapopulations and local populations. The Black-capped Vireo (Vireo atricapilla, hereafter BCVI) is an endangered Neotropical migrant that breeds in discrete patches of shrubland. On the Edwards Plateau a patchwork of this habitat is maintained through periodic disturbance. I applied a cost-distance scenario based on the amount of woody cover, level of human presence, and local topography, to a series of classified landcover maps of the Balcones Canyonlands region of central Texas to determine whether a cost distance model fit observed levels of dispersal of BCVI better than simple geographic (Euclidean) distance. Pair-wise connectivity values for a set of habitat patches on the Balcones Canyonlands Preserve (BCP) and Balcones National Wildlife Refuge (BCNWR) were evaluated for the 2008-2009 breeding seasons via a program of color-banding and resighting. Interpatch exchange rates were converted to measures of dissimilarity, entered into a pattern matrix, and confronted to model matrices containing effective distance values generated by cost-distance analysis, using simple and partial Mantel tests. Although statistical power was limited because of small sample size (n = 4), results provide weak support for the continued use of geographic distance as a metric for interpatch connectivity. | en_US |
dc.description.department | Biology | |
dc.format | Text | |
dc.format.extent | 56 pages | |
dc.format.medium | 1 file (.pdf) | |
dc.identifier.citation | Simper, W. S. (2010). <i>Cost-distance analysis of connectivity for an avian migrant inhabiting a fragmented network</i> (Unpublished thesis). Texas State University-San Marcos, San Marcos, Texas. | |
dc.identifier.uri | https://hdl.handle.net/10877/2489 | |
dc.language.iso | en | |
dc.subject | Black-capped vireo | en_US |
dc.subject | Connectivity | en_US |
dc.subject | Dispersal | en_US |
dc.subject | Metapopulation | en_US |
dc.subject | Balcones Canyonlands Preserve | en_US |
dc.subject | Cost-distance | en_US |
dc.subject | Fragmentation | en_US |
dc.title | Cost-Distance Analysis of Connectivity for an Avian Migrant Inhabiting a Fragmented Network | en_US |
dc.type | Thesis | |
thesis.degree.department | Biology | |
thesis.degree.discipline | Population and Conservation Biology | en_US |
thesis.degree.grantor | Texas State University-San Marcos | en_US |
thesis.degree.level | Masters | |
thesis.degree.name | Master of Science |
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