Browsing by Author "Calnan, Thomas R."
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Item The Brownwood Marsh restoration project: a successful effort to restore and create wetland habitat(Texas Natural Resource Conservation Commission, 1997) Calnan, Thomas R.; Proceedings: The State of the Bay Symposium, III. January 10-11, 1997The Brownwood Marsh Restoration Project is in the tidal segment of the San Jacintto River near Baytown, Texas. The Project provides for the replacement of natural resources injured, destroyed or lost as a result of releases of hazardous substances at or from the French Limited Superfund Site near Crosby, Texas.Item Coastal Wetlands Acquisition Plan for Texas - Project Report(Texas General Land Office, 1995) Calnan, Thomas R.;The Coastal Wetlands Acquisition Plan for Texas satisfies the State-owned Wetland Conservation Plan and the Coastal Wetland Acquisition Act by: (1) complementing existing wetland preservation programs; (2) creating the criteria and guidance for identifying and prioritizing coastal wetlands for state acquisition; (3) identifying and ranking general coastal wetland categories by region for acquisition; (4) identifying current and potential new funding sources for acquisition; and (5) helping satisfy the overall goal of no net loss of state-owned coastal wetlands.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.Item Texas Coastal Wetlands: Their Status, Legislation, and Regulation(Texas General Land Office, 1991) Calnan, Thomas R.; The Gulf Coast Wetlands Conference, June 11-12, 1991, Westin Canal Plan, New Orleans, LouisianaThe US Fish and Wildlife Service (USFWS) estimates that Texas lost approximately 8,400,000 acres of wetland (inland and coastal) between colonial times and the 1980's, next to Florida, the second highest total of any state. The Texas Parks and Wildlife Departmetn ( TPWD) estimates that approximately 35% of the state's coastal marshes (salt, brackish, and fresh) were lost between the mid-1950's and 1979.