Population Trends of Colonial Waterbirds in Galveston Bay

dc.acquisition-srcGBEPen_US
dc.call-noQH 541.5 .E8 G32 T-5 c.1-3 GBAYen_US
dc.call-noREF QH 541.5 .E8 G32 T-5 c.1-4 GBAYen_US
dc.call-noARCHIVE QH 541.5 .E8 G32 T-5 c.1-3 GBAYen_US
dc.contract-noGBEP T-5en_US
dc.contributor.authorMcFarlane, Robert W.en_US
dc.contributor.otherProceedings: The State of the Bay Symposium V. January 31 - February 2, 2001en_US
dc.date.accessioned2010-02-15T17:37:19Z
dc.date.available2010-02-15T17:37:19Z
dc.date.issued2001en_US
dc.degreeen_US
dc.descriptionpgs. 170-171en_US
dc.description-otheren_US
dc.description.abstractThe Texas Colonial Waterbird Census data for the 26 year period 1973 to 1998 were analyzed in search of population trends for the 22 species of colonial waterbirds nesting within the Galveston Bay ecosystem. The minimum, average, and maximum number of breeding pairs for each species is presented. The trends are graphed in the accompanying figures for each species. A trend line has been incorporated into each graph to aid interpretation but the reader is cautioned that colonial waterbird data seldom meet the inherent assumptions associated with linear regression trend analysis (independence, linearity, normal distribution, and homoscedasticity of variance). Trend lines near the horizontal indicate a stable, albeit fluctuating, population. Year-to-year variation is rather extreme for most species and breeding was absent in some years for some species. The total population for each species is double the pair number plus an unknown, but substantial, number of nonbreeding individuals. Ten species (45 percent) appear to have stable populations. Eight species (36 percent) appear to have increased in abundance to some extent. Only 4 species (18 percent) exhibit evidence of population decline.en_US
dc.description.urien_US
dc.geo-codeHoustonen_US
dc.geo-codeGalveston Bayen_US
dc.history10/25/04 easen_US
dc.identifier.urihttp://hdl.handle.net/1969.3/26210
dc.latitudeen_US
dc.locationGBIC Circulating Collection; GBIC Reference Collection; GBIC Archive Collectionen_US
dc.longitudeen_US
dc.notesThe author is representing McFarlane & Associatesen_US
dc.placeAustin, TXen_US
dc.publisherTexas Natural Resource Conservation Commissionen_US
dc.relation.ispartofseries9117.00en_US
dc.relation.urihttp://gbic.tamug.edu/gbeppubs/T5/gbnep-T5.htmlen_US
dc.scaleen_US
dc.seriesen_US
dc.titlePopulation Trends of Colonial Waterbirds in Galveston Bayen_US
dc.typeChapteren_US
dc.universityen_US
dc.vol-issueT-5en_US

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