Geology topics
Virginia Burkett
Publications and source records attributed to Virginia Burkett.
Climate change in the United States: Implications for fish and wildlife management
No abstract available.
Potential consequences of climate variability and change for the Southeastern United States
No abstract available.
Potential consequences of climate variability and change on coastal areas and marine resources
No abstract available.
Wetlands and climate change - Scientific approaches and management options
No abstract available
Impacts of hazards and disasters on coastal ecosystems: The hidden costs to society
No abstract available.
Characterization of an old-growth bottomland hardwood wetland forest in Northeast Texas: Harrison Bayou
Most wetland losses in the southern region over the past 200 years have occurred in bottomland hardwood forests. By 1980 the original extent of palustrine bottomland in Texas had been reduced by 63%, from roughly 16 to 6 million acres. Additional losses have occurred during more recent years as a result of conversion to agriculture and timber harvests; these factors and the need to supply new hardwood chip mills in the region pose a potential threat to the remaining hardwood resource. The Harrison Bayou watershed in northeast Texas contains one of the few relatively undisturbed bottomland hardwood wetland forests in the State. Harrison Bayou is part of the Caddo Lake wetlands complex, most of which was designated a Wetland of International Importance under the Ramsar Treaty in October of 1993. Caddo Lake State Park is one of fifteen "Ramsar" wetlands in the United States; it is the only wetland with this designation in the State of Texas. Harrison Bayou is an important component of the Caddo Lake watershed; it represents a model bottomland hardwood wetland in both structure and ecological function. Three major forest cover types illustrate the diversity of the 600-hectare bottomland hardwood/baldcypress forest at Harrison Bayou. Comparison of wetland forest extent and species composition in 1977 with 1993 revealed very little change in wetland forest community structure.
Effects of flooding regime, mycorrhizal inoculation and seedling treatment type on first-year survival of Nuttal Oak (Quercus nuttallii Palmer)
Three different types of Nuttall oak ( Quercus nuttallii Palmer) seedlings were planted on floodprone, former cropland in Mississippi, Louisiana, and Texas. The three types of 1+0 seedlings planted at each site in January and February of 1995 were bareroot seedlings, seedlings grown in 164 square centimeters plastic containers, and container grown seedlings inoculated with vegetative mycelia of Pisolithus tinctorious (Pers.) Coker and Couch. Seedlings at the Mississippi site were planted in a split-plot design at three different elevations, which provided three different natural flooding treatments. Seedlings at the other two sites were planted in a Latin square design at a single elevation. Significant differences in the survival and condition of the seedlings during the first growing season were observed at the Louisiana site, favoring the inoculated container-grown seedlings over the other two stock types. First-year seedling survival at the site in Texas, which had the best drainage of the three sites, was not significantly different between treatments. Small mammals clipped 98 percent of the container-grown seedlings at the Mississippi site.
Southern region: Forest research reort
No abstract available.