Publications
Read publications and other informational products to learn more about USGS science occurring in the Mississippi Basin.
Filter Total Items: 5654
The ground-water-level monitoring network in Iowa The ground-water-level monitoring network in Iowa
The ground-water-level monitoring network in Iowa consists of 202 wells completed in the principal bedrock and surficial aquifers that supply ground water to numerous users throughout the State. The bedrock aquifers include the Cambrian-Ordovician aquifer system, the Silurian-Devonian aquifer, the Mississippian aquifer, localized Pennsylvanian aquifers, and the Dakota aquifer. The...
Authors
R.B. Lambert
Okaloosa darter Etheostoma okaloosae Okaloosa darter Etheostoma okaloosae
Abstract not supplied at this time
Authors
N.M. Burkhead, J.D. Williams
Comparison of solid-phase and pore-water approaches for assessing the quality of marine and estuarine sediments Comparison of solid-phase and pore-water approaches for assessing the quality of marine and estuarine sediments
As part of our continuing evaluation of the pore-water approach for assessing sediment quality, we made a series of side-by-side comparisons between the standard 10-day amphipod whole sediment test with the corophiid Grandidierella japonica and a suite of tests using pore water extracted from the same sediments. the pore-water tests evaluated were the sea urchin (Arbacia punctulata)...
Authors
Robert Scott Carr, Duane Chapman
Assessment of sediment contamination at Great Lakes Areas of Concern: the ARCS Program Toxicity-Chemistry Work Group strategy Assessment of sediment contamination at Great Lakes Areas of Concern: the ARCS Program Toxicity-Chemistry Work Group strategy
In response to a mandate in Section 118(c)(3) of the Water Quality Act of 1987, a program called Assessment and Remediation of Contaminated Sediments (ARCS) was established. Four technical work groups were formed. This paper details the research strategy of the Toxicity-Chemistry Work Group. The Work Group's general objectives are to develop survey methods and to map the degree of...
Authors
P.E. Ross, G.A. Burton, E.A. Crecelius, J. C. Filkins, J. P. Giesy, C.G. Ingersoll, P.F. Landrum, M. J. Mac, T. J. Murphy, J. E. Rathbun, V. E. Smith, H. E. Tatem, R.W. Taylor
The Etowah: a river under siege The Etowah: a river under siege
Abstract not supplied at this time
Authors
N.M. Burkhead, J.D. Williams, B. J. Freeman
The status of loggerhead, Caretta caretta; Kemp's ridley, Lepidochelys kempi; and green, Chelonia mydas, sea turtles in U.S. waters: a reconsideration The status of loggerhead, Caretta caretta; Kemp's ridley, Lepidochelys kempi; and green, Chelonia mydas, sea turtles in U.S. waters: a reconsideration
Abstract not supplied at this time
Authors
C.K. Dodd, R.A. Byles
Food preferences of spring-migrating blue-winged teal in southwestern Louisiana Food preferences of spring-migrating blue-winged teal in southwestern Louisiana
We studied effects of pair status, molt intensity, and year on food selection by migrating male blue-winged teal (Anas discors) in southwestern Louisiana during springs 1990 and 1991. Diets consisted primarily of animal foods; but plant material, consisting mostly of seeds, comprised as much as 44%. There was no difference in animal food consumption by paired and unpaired males; however...
Authors
Scott W. Manley, W.L. Hohman, J.L. Moore, David Richard
Baseline levels of certain trace metals in sediment and biota Baseline levels of certain trace metals in sediment and biota
No abstract available.
Authors
A. J. Krynitsky, C.P. Rice, P.F. Roscigno
A summary of water-resources activities of the U.S. Geological Survey in Iowa, fiscal year 1992 A summary of water-resources activities of the U.S. Geological Survey in Iowa, fiscal year 1992
Water-resources activities of the U.S. Geological Survey in Iowa consist of collecting hydrologic data and conducting interpretive studies. Hydrologic investigations in Iowa are made through three basic types of projects: (1) hydrologic data-collection programs; (2) local or areal studies; and (3) statewide or regional investigations. These projects are funded through cooperative joint...
Communications: Blood chemistry of laboratory-reared Golden trout Communications: Blood chemistry of laboratory-reared Golden trout
Golden trout Oncorhynchus aguabonita obtained from a wild stock as fertilized eggs were reared in the laboratory for 21 months. The laboratory-reared golden trout in our study reached sexual maturity earlier and grew more rapidly than wild golden trout do (according to the scientific literature). Male fish averaged 35.6 cm in total length and 426 g in weight, and females averaged 36.2 cm...
Authors
Joseph B. Hunn, Ray H. Wiedmeyer, Ivan E. Greer, Andrew W. Grady
Toxicity of trace element and salinity mixtures to striped bass (Morone saxatilis) and Daphnia magna Toxicity of trace element and salinity mixtures to striped bass (Morone saxatilis) and Daphnia magna
Acute toxicity tests with reconstituted water were conducted to investigate the relationship between water hardness, salinity, and a mixture of trace elements found in irrigation drain waters entering Stillwater Wildlife Management Area (SWMA), near Fallon, Nevada. The SWMA has been the site of many fish kills in recent years, and previous toxicity studies indicated that one drain water...
Authors
F.J. Dwyer, S.A. Burch, C.G. Ingersoll, J. B. Hunn
Organochlorine contamination of sediments, fish, and invertebrates Organochlorine contamination of sediments, fish, and invertebrates
No abstract available.
Authors
C.P. Rice, A. J. Krynitsky, P.F. Roscigno