Status and recent trends of Galveston Bay's colonial water birds with management implications

dc.acquisition-srcGBEPen_US 541.5 .E8 G32 T-1 c. 1-5 GBAYen_US QH 541.5 .E8 G32 T-1 c. 1-3 GBAYen_US QH 541.5 .E8 G32 T-1 c.1-3 GBAYen_US 541.5 .E8 G32 T-1en_US
dc.contributor.authorGlass, Phil, and Will Roachen_US
dc.contributor.otherProceedings: The State of the Bay Symposium, III. January 10-11, 1997en_US
dc.descriptionpgs. 49-60en_US
dc.description.abstractApproximately 66 species belonging to the group popularly called water birds are known to regularly occur in Galveston Bay and its adjacent wetlands. These are the migrant waterfowl (approximately 31 species), regularly nesting waterfowl (2 species), migrant fish-eating birds (10 species), and colonial water birds (23 species). These numbers do not include vagrants or accidentals which irregularly occur along the upper Texas coast, the group (37 species) called shorebirds belonging to the plover and sandpiper families, or about 11 species of rails, cranes, the wood stork, and smaller wading birds generally considered aquatic but which do not fit into the above categories. Nor do they include wide-ranging pelagic birds which do not regularly breed on the Texas coast. The 23-species subgroup called colonial water birds is composed of gulls, terns, skimmers, herons, egrets, cormorants, and pelicans. This subgroup lends itself to regular censusing because its members annually aggregate during the breeding season in large, well-defined, and easily censused colony sites. Primarily fish and aquatic invertebrate-eating birds, these birds are ideal to serve as monitors because they are resident and widespread over most of the bay for most of the year and they occupy higher levels of the food chain. also they are susceptible to many of the factors affecting the bay ecosystem, such as fluctuations in populations of forage species, invasions of exotic pest species, human disturbance, erosion of intertidal and shoreline habitat, chemical contamination, and extreme climatic conditions. We believe that accurate and long-term counts of colonial water birds can be a sensitive tool to detect important biological changes to the estuary.en_US
dc.geo-codeTexas Coasten_US
dc.geo-codeGalveston Bayen_US
dc.history11/8/04 eas; 10/25/04 easen_US
dc.locationGBIC Circulating Collection; GBIC Reference Collection; GBIC Archival Collection; TAMUG Circulating Collectionen_US
dc.notesThe authors are representing U.S. Fish and Wildlife Serviceen_US
dc.placeAustin, TXen_US
dc.publisherTexas Natural Resource Conservation Commissionen_US
dc.subjectaquatic birdsen_US
dc.subjectmarine birdsen_US
dc.subjectdata collectionsen_US
dc.subjectpopulation characteristicsen_US
dc.titleStatus and recent trends of Galveston Bay's colonial water birds with management implicationsen_US