Cost-Distance Analysis of Connectivity for an Avian Migrant Inhabiting a Fragmented Network

dc.contributor.advisorGreen, M. Clayen_US
dc.contributor.authorSimper, William S.
dc.contributor.committeeMemberFarquhar, Craigen_US
dc.contributor.committeeMemberOtt, James R.en_US
dc.contributor.committeeMemberWeckerly, Floyd W.en_US
dc.date.accessioned2011-03-07T22:07:32Z
dc.date.available2011-03-07T22:07:32Z
dc.date.issued2010-12en_US
dc.description.abstractDispersal 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.departmentBiology
dc.formatText
dc.format.extent56 pages
dc.format.medium1 file (.pdf)
dc.identifier.citationSimper, 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 (Unpublished thesis).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.urihttps://hdl.handle.net/10877/2489
dc.language.isoen
dc.subjectBlack-capped vireoen_US
dc.subjectConnectivityen_US
dc.subjectDispersalen_US
dc.subjectMetapopulationen_US
dc.subjectBalcones Canyonlands Preserveen_US
dc.subjectCost-distanceen_US
dc.subjectFragmentationen_US
dc.titleCost-Distance Analysis of Connectivity for an Avian Migrant Inhabiting a Fragmented Networken_US
thesis.degree.departmentBiology
thesis.degree.disciplinePopulation and Conservation Biologyen_US
thesis.degree.grantorTexas State University-San Marcosen_US
thesis.degree.levelMasters
thesis.degree.nameMaster of Science
txstate.documenttypeThesis

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