Publications
Read publications and other informational products to learn more about USGS science occurring in the Mississippi Basin.
Filter Total Items: 5568
Survival of female northern pintails wintering in southwestern Louisiana Survival of female northern pintails wintering in southwestern Louisiana
The North American breeding population of northern pintails (Anas acuta) has reached previously unprecedented low numbers 4 times since 1983. Because pintails show high fidelity to wintering areas, regional survival estimates and identification of factors influencing survival are needed to guide management of wintering pintails. We used radiotelemetry to estimate survival rates of female...
Authors
Robert R. Cox, Alan D. Afton, Richard M. Pace
Water-quality data and methods of analysis for samples collected near a plume of sewage-contaminated ground water, Ashumet Valley, Cape Cod, Massachusetts, 1993-94 Water-quality data and methods of analysis for samples collected near a plume of sewage-contaminated ground water, Ashumet Valley, Cape Cod, Massachusetts, 1993-94
No abstract available.
Authors
Jennifer G. Savoie, Denis R. LeBlanc
Factors influencing cattail abundance in the northern Everglades Factors influencing cattail abundance in the northern Everglades
Since the early 1900s, the Everglades have been influenced by anthropogenic actions including altered hydrology and increased nutrient loading. In the northern Everglades an apparent effect of these disturbances has been the development and proliferation of dense cattail (Typha spp. ) stands in areas previously dominated by sawgrass (Cladium jamaicense Crantz) and sloughs. Cattail cover...
Authors
S. Newman, J. Schuette, James B. Grace, K. Rutchey, T. Fontaine, K.R. Reddy, M. Pietrucha
Hydrogeology and water quality in the Cedar Rapids area, Iowa, 1992-96 Hydrogeology and water quality in the Cedar Rapids area, Iowa, 1992-96
The U.S. Geological Survey (USGS) and the city of Cedar Rapids conducted a cooperative study from 1992 to 1996 to assess the hydrogeology and water quality in the Cedar River, Cedar River alluvial aquifer, Devonian aquifer, and Silurian aquifer in a 231-square-mile area of Benton and Linn Counties near Cedar Rapids, Iowa. The city of Cedar Rapids withdrew an average of 34 million gallons...
Authors
P.M. Schulmeyer, D.J. Schnoebelen
On the use of path analysis and related procedures for the investigation of ecological problems On the use of path analysis and related procedures for the investigation of ecological problems
No abstract available.
Authors
James B. Grace, Bruce H. Pugesek
Resource management of forested wetlands: Hurricane impact and recovery mapped by combining Landsat TM and NOAA AVHRR data Resource management of forested wetlands: Hurricane impact and recovery mapped by combining Landsat TM and NOAA AVHRR data
A temporal suite of NOAA Advanced Very High Resolution Radiometer (AVHRR) images, transformed into a vegetation biomass indicator, was combined with a single-date classification of Landsat Thematic Mapper (TM) to map the association between forest type and hurricane effects. Hurricane effects to the forested wetland included an abrupt decrease and subsequent increase in biomass. The...
Authors
Elijah Ramsey III, D.K. Chappell, Dennis M. Jacobs, Sijan Sapkota, D.G. Baldwin
Overview of a workshop on screening methods for detecting potential (anti-) estrogenic/androgenic chemicals in wildlife Overview of a workshop on screening methods for detecting potential (anti-) estrogenic/androgenic chemicals in wildlife
The U.S. Congress has passed legislation requiring the U.S. Environmental Protection Agency (U.S. EPA) to develop, validate, and implement screening tests for identifying potential endocrine-disrupting chemicals within 3 years. To aid in the identification of methods suitable for this purpose, the U.S. EPA, the Chemical Manufacturers Association, and the World Wildlife Fund sponsored...
Authors
Gerald T. Ankley, Ellen Mihaich, Ralph G. Stahl, Donald E. Tillitt, Theo Colborn, Suzzanne McMaster, Ron Miller, John Bantle, Pamela Campbell, Nancy Denslow, Richard L. Dickerson, Leroy C. Folmar, Michael Fry, John P. Giesy, L. Earl Gray, Patrick Guiney, Thomas Hutchinson, Sean W. Kennedy, Vincent Kramer, Gerald A. LeBlanc, Monte Mayes, Alison Nimrod, Reynaldo Patino, Richard Peterson, Richard Purdy, Robert Ringer, Peter C. Thomas, Les Touart, Glen Van Der Kraak, Tim Zacharewski
Quality of ground water used for selected municipal water supplies in Iowa, 1982-96 water years Quality of ground water used for selected municipal water supplies in Iowa, 1982-96 water years
The Iowa ground-water-quality monitoring program has been conducted cooperatively since 1982 by the Iowa Department of Natural Resources, Geological Survey Bureau; the University of Iowa Hygienic Laboratory, and the U.S. Geological Survey. The original objectives of the program were to provide baseline ground-waterquality data throughout the State for the major aquifers and to address...
Authors
B.D. Schaap, S. M. Linhart
Environmental toxicology and risk assessment: Seventh volume Environmental toxicology and risk assessment: Seventh volume
This publication, Environmental Toxicology and Risk Assessment: Seventh Volume, contains papers presented at the Seventh Symposium on Toxicology and Risk Assessment: Ultraviolet Radiation and the Environment, held 7-9 April, 1997 in St. Louis, MO. The symposium, the 24th in a series on environmental toxicology, was sponsored by Committee E-47. Edward E. Little, of the U.S. Geological...
Shot prevalences and diets of diving ducks five years after ban on use of lead shotshells at Catahoula Lake, Louisiana Shot prevalences and diets of diving ducks five years after ban on use of lead shotshells at Catahoula Lake, Louisiana
Catahoula Lake, central Louisiana, is a RAMSAR Convention Wetland of International Importance and among the most important wintering and staging areas for waterfowl in North America. To evaluate exposure rates in Catahoula Lake waterfowl 5 years after a ban on use of lead shot, we determined the prevalence of ingested shot and diets of canvasbacks (Aythya valisineria) and lesser scaup (A...
Authors
Joseph L. Moore, William L. Hohman, Timothy M. Stark, Gary A. Weisbrich
Water use and quality of fresh surface-water resources in the Barataria-Terrebonne Basins, Louisiana Water use and quality of fresh surface-water resources in the Barataria-Terrebonne Basins, Louisiana
Approximately 170 Mgal/d (million gallons per day) of ground- and surface-water was withdrawn from the Barataria-Terrebonne Basins in 1995. Of this amount, surface water accounted for 64 percent ( 110 MgaVd) of the total withdrawal rates in the basins. The largest surface-water withdrawal rates were from Bayou Lafourche ( 40 Mgal/d), Bayou Boeuf ( 14 MgaVd), and the Gulf Intracoastal...
Authors
Penny M. Johnson-Thibaut, Dennis K. Demcheck, Christopher M. Swarzenski, Paul A. Ensminger