Publications
Publications from USGS science centers throughout the Southeast Region.
Filter Total Items: 10365
Diurnal time-activity budgets of wintering canvasbacks in Louisiana Diurnal time-activity budgets of wintering canvasbacks in Louisiana
We determined diurnal time-activity budgets of Canvasbacks (Aythya valisineria) at Catahoula Lake and at the Mississippi River Delta, Louisiana, from December 1987 to March 1988. Canvasback feeding, resting, locomotory, and comfort activities varied by month and location with a month-location interaction. Moreover, the percentage of time spent feeding varied by sex with a month-sex...
Authors
William L. Hohman, D.P. Rave
Wetland and wildlife management in the Gulf of Mexico region Wetland and wildlife management in the Gulf of Mexico region
No abstract available.
Authors
James B. Johnston
Identification of isopropylbiphenyl, alkyl diphenylmethanes, diisopropylnaphthalene, linear alkyl benzenes and other polychlorinated biphenyl replacement compounds in effluents, sediments and fish in the Fox River System, Wisconsin Identification of isopropylbiphenyl, alkyl diphenylmethanes, diisopropylnaphthalene, linear alkyl benzenes and other polychlorinated biphenyl replacement compounds in effluents, sediments and fish in the Fox River System, Wisconsin
Five polychlorinated biphenyl replacement dye solvents and a diluent present in carbonless copy paper were identified by gas chromatography/mass spectrometry in the following matrices: effluents from a de-inking–recycling paper mill and a municipal wastewater treatment plant receiving wastewaters from a carbonless copy paper manufacturing plant; sediments; and fish collected near both...
Authors
Paul H. Peterman, Joseph J. Delfino
Comparative toxicity of inorganic contaminants released by placer mining to early life stages of salmonids Comparative toxicity of inorganic contaminants released by placer mining to early life stages of salmonids
The acute toxicities of four trace inorganics associated with placer mining were determined, individually and in environmentally relevant mixtures, to early life stages of Arctic grayling (Thymallus arcticus) from Alaska and Montana, coho salmon (Oncorhynchus kitsutch) from Alaska and Washington, and rainbow trout (Oncorhynchus mykiss) from Montana. The descending rank order of toxicity...
Authors
Kevin J. Buhl, Steven J. Hamilton
Establishment of bottomland oak plantations on the Yazoo National Wildlife Refuge complex Establishment of bottomland oak plantations on the Yazoo National Wildlife Refuge complex
Stocking, height and diameter growth, and invasion of both herbaceous and woody plant species are reported for 5 direct seeded and 5 planted seedling stands of bottomland oaks, all of which were between 4 and 8 years old. Stocking was generally higher in the planted seedling stands. Both height and diameter growth were substantially higher in the planted seedling stands. Low stocking and...
Authors
J. A. Allen
Selected geographic analysis projects: U. S. Fish and Wildlife Service's National Wetlands Research Center Selected geographic analysis projects: U. S. Fish and Wildlife Service's National Wetlands Research Center
No abstract available.
Authors
Floyd O. Stayner, James D. Scurry, James B. Johnston, Mary C. Watzin, Pasquale F. Roscigno
Variations in suspended sediment and associated trace element concentrations in selected riverine cross sections Variations in suspended sediment and associated trace element concentrations in selected riverine cross sections
Detailed sampling and subsequent analyses of riverine suspended sediment obtained from six rivers in the United States indicate substantial differences in suspended sediment concentrations and possibly in some associated trace elements, depending on whether depth- and width-integrated, point, or pumping samples are used. In addition, the data from time-series, depth-integrated sampling...
Authors
Arthur J. Horowitz, Frank A. Rinella, Paul J. Lamothe, Timothy L. Miller, Thomas K. Edwards, Richard L. Roche, David A. Rickert
Selenium and other elements in juvenile striped bass from the San Joaquin Valley and San Francisco Estuary, California Selenium and other elements in juvenile striped bass from the San Joaquin Valley and San Francisco Estuary, California
Concentrations of selenium and other trace elements were determined in 55 whole body samples of juvenile anadromous striped bass (Morone saxatilis) from the San Joaquin Valley and San Francisco Estuary, California. The fish (≤1 yr old—the predominant life stage in the San Joaquin Valley) were collected in September–December 1986 from 19 sites in the Valley and 3 sites in the Estuary, and...
Authors
Michael K. Saiki, Donald U. Palawski
Field trip guide - American Water Resources Association Field trip guide - American Water Resources Association
No abstract available.
Authors
Matthew C. Larsen, Thalia D. Veve
Development of an aquifer management model AQMAN3D Development of an aquifer management model AQMAN3D
A computer code that enables the use of the USGS Modular groundwater flow model for aquifermanagement modeling has been developed. Aquifermanagement techniques integrate groundwater flow modeling with linear quadratic optimization methods for the solution of various aquifer management problems. The model AQMAN3D, is a modified version of a previously developed two-dimensional AQMAN model...
Authors
Juan Carlos Puig, L. I. Rolon-Collazo, Ishmael Pagan-Trinidad
Landslide processes in saprolitic soils of a tropical rain forest, Puerto Rico Landslide processes in saprolitic soils of a tropical rain forest, Puerto Rico
Shallow soil slips, earth and debris slides appear to be a primary mechanism of hillslope denudation in the rainforest of eastern Puerto Rico. Annual rainfall in excess of 4,000 mm, and thick sequences (up to 20 m) of residual soils (saprolite) combine to produce these landslides. Shear strength testing and observatons of tension cracks indicate that landslides may start as tensile...
Authors
Matthew C. Larsen, Andrew Simon