Publications
Publications from USGS science centers throughout the Southeast Region.
Filter Total Items: 9969
Population structure, body mass, activity, and orientation of an aquatic snake (Seminatrix pygaea) during a drought
The snout – vent length, tail length, weight, sex, activity, and orientation of a population of swamp snakes (Seminatrix pygaea) in north – central Florida were recorded from 1985 through 1990. A small temporary pond was monitored for 1343 days, using a drift fence – pitfall trap sampling regime. I captured 123 different snakes, plus 45 recaptures. Juveniles comprised 89% of the snakes at the pond
Authors
C. K. Dodd
Bluegreen and red algae identified from Florida loggerhead turtle
Abstract not supplied at this time
Authors
C. K. Dodd, C.J. Dawes
Serum estradiol and progesterone levels during the ovulatory cycle and pregnancy in banteng (Bos javanicus)
Abstract not supplied at this time
Authors
C.S. Asa, B. Read, E.W. Houston, T. S. Gross, J. Parfet, W.J. Boever
Boron, molybdenum, and selenium in aquatic food chains from the lower San Joaquin River and its tributaries, California
Boron (B), molybdenum (Mo), and selenium (Se) were measured in water, sediment, particulate organic detritus, and in various biota—filamentous algae, net plankton, macroinvertebrates, and fishes—to determine if concentrations were elevated from exposure to agricultural subsurface (tile) drainage during the spring and fall 1987, in the San Joaquin River, California. Concentrations of B and Se, but
Authors
Michael K. Saiki, Mark R. Jennings, William G. Brumbaugh
The use of geographic information system technology to compare the environmental impacts of human development on Mobile Bay, Alabama and Galveston Bay, Texas
No abstract available
Authors
Pasquale F. Roscigno, Marcia McNiff, Mary C. Watzin, Wei Ji
Using gis and image processing technology to assist wetland planning, protection, and restoration in coastal Louisiana
No abstract available.
Authors
John Barras, James B. Johnston, Craig Johnson
The effects of habitat productivity on competition intensity
No abstract available.
Authors
James B. Grace
Toxicity of contaminated sediments in dilution series with control sediments
The use of dilutions has been the foundation of our approach for assessing contaminated water, and accordingly, it may be important to establish similar or parallel approaches for sediment dilutions. Test organism responses to dilution gradients can identify the degree of necessary sediment alteration to reduce the toxicity. Using whole sediment dilutions to represent the complex interactions of i
Authors
M.K. Nelson, P.F. Landrum, G.A. Burton, S.J. Klaine, E.A. Crecelius, T.D. Byl, Duane C. Gossiaux, V.N. Tsymbal, L. Cleveland, Christopher G. Ingersoll, G. Sasson-Brickson
Uptake of planar polychlorinated biphenyls and 2,3,7,8-substituted polychlorinated dibenzofurans and dibenzo-p-dioxins by birds nesting in the lower Fox River and Green Bay, Wisconsin, USA
The uptake of persistent polychlorinated hydrocarbons (PCHs) by four avian species was investigated at upper trophic levels of two aquatic food chains of the lower Fox River and Green Bay, Wisconsin. Accumulation of total and specific planar polychlorinated biphenyls (PCBs), polychlorinated dibenzofurans (PCDFs), polychlorinated dibenzo-p-dioxin (PCDDs), and H411E rat hepatoma cell bioassay-derive
Authors
Gerald T. Ankley, Gerald J. Niemi, Keith B. Lodge, Hallett J. Harris, Donald L. Beaver, Donald E. Tillitt, Ted R. Schwartz, John P. Giesy, Paul D. Jones, Cynthia Hagley
Use of mesocosm data to predict effects in aquatic ecosystems: Limits to interpretation: Chapter 16
Aquatic mesocosm studies are being used to refute a presumption of risk derived from laboratory toxicity tests conducted under the Federal Insecticide, Fungicide, and Rodenticide Act (FIFRA). Mesocosm studies incorporate many biological, chemical and physical characteristics of natural ecosystems. Hence, they serve as realistic surrogates of natural ecosystems and allow tests of pesticide effect a
Authors
Thomas W. La Point, James F. Fairchild
Research and education to improve surface and ground-water quality of a claypan soil--Proceedings of agricultural research to protect water quality
No abstract available.
Authors
E.E. Alberts, D. W. Blevins, N. K. Kitchen, Tony Prato