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dc.contributor.authorFrisch, John Robert
dc.date.accessioned2014-03-04T21:12:18Z
dc.date.available2014-03-04T21:12:18Z
dc.date.issued2013-08
dc.identifier.otherfrisch_john_r_201308_ms
dc.identifier.urihttp://purl.galileo.usg.edu/uga_etd/frisch_john_r_201308_ms
dc.identifier.urihttp://hdl.handle.net/10724/29040
dc.description.abstractOccupancy models were used to identify environmental parameters that best predicted the prevalence of four functionally important focal stream taxa: Tallaperla spp. (stonefly), Cambarus spp. (crayfish), Pleurocera proxima (snail), and Cottus bairidi (mottled sculpin). The study was conducted on a landscape scale within the Upper Little Tennessee River Basin (in thirty-seven streams reaches draining catchments between 18-1670 ha, within a 1,130 km2 area). The estimated proportion of patches occupied within a reach was used as a measure of focal taxon prevalence and thirty-four models were used to examine the relative association of environmental parameters with taxon occupancy. The prevalence of all four taxa was associated with land cover, and Tallaperla was largely absent below a threshold of 85-90% forest cover in the watershed. Occupancy modeling has expanded our understanding of how functionally important stream consumers are influenced by environmental parameters operating at both local and regional watershed extents.
dc.languageeng
dc.publisheruga
dc.rightspublic
dc.subjectAkaike Information Criterion
dc.subjectCambarus
dc.subjectConsumers
dc.subjectCottus bairdi
dc.subjectDetection
dc.subjectForest Loss
dc.subjectHabitat
dc.subjectLand-use
dc.subjectLittle Tennessee River Basin
dc.subjectOccupancy
dc.subjectPleurocera proxima
dc.subjectSouthern Appalachians
dc.subjectStream Chemistry
dc.subjectTallaperla
dc.titleUse of occupancy models to examine stream consumer prevalence across a land cover gradient in the southern Appalachians, USA
dc.typeThesis
dc.description.degreeMS
dc.description.departmentInstitute of Ecology
dc.description.majorEcology
dc.description.advisorCatherine Pringle
dc.description.committeeCatherine Pringle
dc.description.committeeAmy Rosemond
dc.description.committeeJohn Maerz


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