Publications
Read publications and other informational products to learn more about USGS science occurring in the Mississippi Basin.
Filter Total Items: 5583
Wetland vegetation Wetland vegetation
No abstract available.
Authors
Glenn R. Guntenspergen, F. Stearns, J.A. Kadlec
Modeling coastal Louisiana's vulnerability to oil and toxic chemical spills Modeling coastal Louisiana's vulnerability to oil and toxic chemical spills
No abstract available.
Authors
Floyd O. Stayner, James B. Johnston, James D. Scurry
Streamside habitats in southern forested wetlands: Their role and implications for management Streamside habitats in southern forested wetlands: Their role and implications for management
The value of streamside forests to fish and wildlife and the influence of forest management on their value have been recognized in a general sense for decades. However, in today’s climate of increasing environmental regulation and intensive forest management, there is need for more detailed understanding of the value of streamside forests to fish and wildlife. Dickson and Huntley (1987...
Authors
Rebecca J. Howard, James A. Allen
Modeling bottomland forest and wildlife habitat changes in Louisiana's Atchafalaya Basin Modeling bottomland forest and wildlife habitat changes in Louisiana's Atchafalaya Basin
No abstract available.
Authors
Michael S. Brody, William H. Conner, L. Pearlstine, Wiley M. Kitchens
Sensitivity of endemic Snake River cutthroat trout to acidity and elevated aluminum Sensitivity of endemic Snake River cutthroat trout to acidity and elevated aluminum
Acidic episodes in waters of the western USA, do not last as long and are not as intense as those in the eastern USA, but we found that the native western cutthroat trout Oncorhynchus clarki is sensitive to even brief reductions in pH. In laboratory studies, fish were exposed to acidity (pH 4.5–6.5) alone or in the presence of aluminum during the first 7 d of the freshly fertilized egg...
Authors
D. F. Woodward, Aida M. Farag, M.E. Mueller, E. E. Little, F. A. Vertucci
Analysis of fish bile with HPLC — fluorescence to determine environmental exposure to benzo(a)pyrene Analysis of fish bile with HPLC — fluorescence to determine environmental exposure to benzo(a)pyrene
Brown bullhead from the Black River, Ohio, have a high incidence of liver neoplasia which is associated with elevated concentrations of polynuclear aromatic hydrocarbons (PAHs) in the sediment. We evaluated the use of biliary concentrations of benzo(a)pyrene [B(a)P] equivalents as a means for determining PAH exposure. Bile was collected from 16 brown bullheads and 8 common carp taken...
Authors
Eric P. Johnston, Paul C. Baumann
Trends in wintering canvasback populations at Catahoula Lake, Louisiana Trends in wintering canvasback populations at Catahoula Lake, Louisiana
Aerial survey data (1968-1989) and water gauge readings (1958-1989) were examined to detennine trends in and relationships between canvasback (Aythya valisineria) populations and water levels at Catahoula Lake, Louisiana. Wintering canvasback populations at Catahoula Lake have increased over the past 21 years. A peak population estimate of 78,000 canvasbacks was recorded in January 1988...
Authors
Dennis W. Woolington, James W. Emfinger
Water resources of northeast Iowa Water resources of northeast Iowa
In 1965 a cooperative investigation with the U.S. Geological Survey produced Water Atlas No. 1 (Twenter and Coble, 1965). It presented information on the occurrence, availability, use, quality, and future demand of water in 10 counties in the central part of the state. Subsequent investigations produced Water Atlases No. 4 (Coble and Roberts, 1971) for southeast Iowa, No. 5 (Cagle and...
Authors
P. J. Horick, P. J. Soenksen
IGC Field Trip T218: Geomorphology, neotectonics, and process studies in the Rappahannock River basin, Virginia IGC Field Trip T218: Geomorphology, neotectonics, and process studies in the Rappahannock River basin, Virginia
No abstract available.
Authors
Milan J. Pavich, Robert B. Jacobson, Wayne L. Newell
Slope movements triggered by heavy rainfall, November 3–5, 1985, in Virginia and West Virginia, U.S.A. Slope movements triggered by heavy rainfall, November 3–5, 1985, in Virginia and West Virginia, U.S.A.
Study of slope movements triggered by the storm of November 3–5, 1985, in the central Appalachian Mountains, U.S.A., has helped to define the meteorologic conditions leading to slope movements and the relative importance of land cover, bedrock, surficial geology, and geomorphology in slope movement location. This long-duration rainfall at moderate intensities triggered more than 1,000...
Authors
Robert B. Jacobson, Elizabeth D. Cron, John P. McGeehin
Hydrological, morphometrical, and biological characteristics of the connecting rivers of the International Great Lakes: a review Hydrological, morphometrical, and biological characteristics of the connecting rivers of the International Great Lakes: a review
The connecting channels of the Great Lakes are large rivers (1, 200-9, 900 m3 • s-1) with limited tributary drainage systems and relatively stable hydrology (about 2:1 ration of maximum to minimum flow). The rivers, from headwaters to outlet, are the St. Marys, St. Clair, Detroit, Niagara, and St. Lawrence. They share several characteristics with certain other large rivers: the fish...
Authors
Clayton J. Edwards, Patrick L. Hudson, Walter G. Duffy, Stephen J. Nepszy, Clarence D. McNabb, Robert C. Haas, Charles R. Liston, Bruce Manny, Wolf-Dieter N. Busch
Coastal barrier resources system mapping process Coastal barrier resources system mapping process
The Coastal Barrier Resources Act of 1982 (P.L. 97-348) established the Coastal Barrier Resources System (system), a 452,834 acre system of undeveloped, unprotected coastal barriers along 666 shoreline miles of the Atlantic Ocean and Gulf of Mexico coasts. Within the 186 unites of the Coastal Barrier Resources System, most Federal expenditures that encourage development are prohibited...
Authors
Mary C. Watzin