Browsing by Author "White, William A."
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Item Marsh Sedimentation, Colorado and Trinity River Deltas, Texas Gulf Coast, Field Studies(Bureau of Economic Geology, University of Texas at Austin, 1988-09) Calnan, Thomas R.; White, William A.A major objective of this field investigation is to document marsh aggradation rates using artificial marker horizons similar to those used in Louisiana (DeLaune and other, 1983; Baumann and others, 1984). Two deltaic areas were selected for the study: the Colorado River delta and the Trinity River delta. Both areas have significantly extended their deltas within historic times, and both are fed by rivers whose sediment loads have, more recently, been significantly reduced.Item Status and Trends of Wetland and Aquatic Habitats on Barrier Islands, Upper Texas Coast, Galveston and Christmas Bays(University of Texas at Austin, 2004-06) White, William A.; Tremblay, Thomas A.; Waldinger, Rachel L.; Calnan, Thomas R.Wetland and aquatic habitats are essential components of barrier islands along the Texas coast. These valuable resources are highly productive both biologically and chemically and are part of an ecosystem on which a variety of flora and fauna depend. Scientific investigations of wetland distribution and abundance through time are prerequisites to effective habitat management, thereby ensuring their protection and preservation and directly promoting long-term biological productivity and public use. This report presents results of an investigation to determine current status and historical trends of wetlands and associated aquatic habitats along the upper coast of Texas’ barrier island system from the northeastern corner of Galveston’s East Bay to the southwestern corner of Christmas Bay. The study area encompasses Bolivar Peninsula, Galveston Island, and Follet’s Island, an area that is located within Galveston and Brazoria Counties along the upper Texas coast (Fig. I). Galveston Island and Bolivar Peninsula are broad accretionary barriers with low fore-island dunes, extensive back-island estuarine marshes, and numerous relict beach ridges and intervening swales that are the sites of palustrine marshes in the central part of the island. Development is extensive on Galveston Island and Bolivar Peninsula. Follet’s Island, a much narrower barrier that is undergoing erosion along much of its length, is characterized by low fore-island dunes, productive backisland estuarine marshes, and in adjacent Christmas Bay, ecologically important seagrass beds.Item Status and Trends of Wetland and Aquatic Habitats on Texas Barrier Islands, Matagorda Bay to San Antonio Bay(University of Texas at Austin, 2002-09) White, William A.; Tremblay, Thomas A.; Waldinger, Rachel L.; Calnan, Thomas R.Wetland and aquatic habitats are essential components of barrier islands along the Texas coast. These valuable resources are highly productive biologically and chemically and are part of an ecosystem in which a variety of flora and fauna depend. Scientific investigations of wetland distribution and abundance through time are prerequisites to effective habitat management, thereby insuring their protection and preservation and directly promoting long-term biological productivity and public use. This report presents results of an investigation to determine current status and historical trends of wetlands and associated aquatic habitats along the central Texas barrier island and delta system from San Antonio Bay to East Matagorda Bay.