The relationship between black-capped vireo (Vireo atricapillus) territory density and prescribed burn and environmental variables at the Kerr Wildlife Management Area, Kerr County, Texas

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dc.contributor.advisorBaccus, John T.
dc.contributor.authorNelka, Jane
dc.contributor.committeeMemberSimpson, Randy
dc.contributor.committeeMemberMacey, Susan
dc.contributor.committeeMemberLemke, David
dc.date.accessioned2022-02-21T14:17:46Z
dc.date.available2022-02-21T14:17:46Z
dc.date.issued1999-05
dc.description.abstractVireo territory density may be impacted not only by prescribed burn related factors (such as intensity and time since burn), but also by other environmental variables, including vegetation, rainfall, and soil types. In this study, pastures were burned at different intensities and studied for different post burn periods. Both one day counts and territory mapping were used in collecting data to determine vireo territory density. There was little relationship between data obtained with the two methods (r Pearson= 0.32, P = 0.15). Suggestions were made regarding how to evaluate and, either choose between the data collection techniques, or improve the correlation of data collected via the two methods. In general, vireo territory densities were increasing throughout the study. However, whether this was due to the effects of fire or part of the natural cycle of density change was not clear. Vireo densities were higher o-3 years after a burn than 7-11 years after a burn. In the best general linear model (r<sup>2</sup> = 0.82, P = 0.0001 ), only year in study (P = 0.0001) and the dummy variable pasture identification (P = 0.0001) were significant in predicting vireo territory density. However, in one model there was also the suggestion that time post burn might also contribute (P = 0.10). The best model may be generalizable by substituting soil types for pasture identification. Suggestions regarding other data needed were made as well as how to use modeling along with a geographic information system (G IS) to better understand factors affecting Black-capped Vireo territory density.
dc.description.departmentBiology
dc.formatText
dc.format.extent95 pages
dc.format.medium1 file (.pdf)
dc.identifier.citationNelka, J. F. (1999). The relationship between black-capped vireo (Vireo atricapillus) territory density and prescribed burn and environmental variables at the Kerr Wildlife Management Area, Kerr County, Texas (Unpublished thesis). Southwest Texas State University, San Marcos, Texas.
dc.identifier.urihttps://hdl.handle.net/10877/15376
dc.language.isoen
dc.subjectblack-capped vireo
dc.subjectprescribed burning
dc.subjectbird populations
dc.subjectvireo atricapillus
dc.subjectwildlife management
dc.titleThe relationship between black-capped vireo (Vireo atricapillus) territory density and prescribed burn and environmental variables at the Kerr Wildlife Management Area, Kerr County, Texas
dc.typeThesis
thesis.degree.departmentBiology
thesis.degree.grantorSouthwest Texas State University
thesis.degree.levelMasters
thesis.degree.nameMaster of Science

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