Publications
Read publications and other informational products to learn more about USGS science occurring in the Mississippi Basin.
Filter Total Items: 5568
Metal bioavailability and toxicity to fish in low-alkalinity lakes: A critical review Metal bioavailability and toxicity to fish in low-alkalinity lakes: A critical review
Fish in low-alkalinity lakes having pH of 6·0–6·5 or less often have higher body or tissue burdens of mercury, cadmium, and lead than do fish in nearby lakes with higher pH. The greater bioaccumulation of these metals in such waters seems to result partly from the greater aqueous abundances of biologically available forms (CH3 Hg+, Cd2+, and Pb2+) at low pH. In addition, the low...
Authors
D.J. Spry, James G. Wiener
An intergeneric hybrid of a native minnow, the golden shiner, and an exotic minnow, the rudd An intergeneric hybrid of a native minnow, the golden shiner, and an exotic minnow, the rudd
The hybrid golden shiner Notemigonus crysoleucas × rudd Scardinius erythrophthalmus is the first known nonsalmonid, intergeneric hybrid of an exotic species and a North American native species. The cross is also the first valid record of a viable hybrid involving the native golden shiner. Meristic and mensural characters of 30 artificially produced hybrids of male golden shiners and...
Authors
N.M. Burkhead, J.D. Williams
Hydrologic data for the Big Spring basin, Clayton County, Iowa; water year 1989 Hydrologic data for the Big Spring basin, Clayton County, Iowa; water year 1989
Hydrologic data were collected in the Big Spring Basin located in Clayton County, Iowa, during the 1989 water year. The data were collected in cooperation with the Iowa Department of Natural Resources, Geological Survey Bureau, to provide information on variation and movement of agricultural chemicals in the hydrologic cycle in the Big Spring Basin. Precipitation, stream, and ground...
Authors
S. J. Kalkhoff, R.L. Kuzniar
Improved selenium recovery from tissue with modified sample decomposition Improved selenium recovery from tissue with modified sample decomposition
The present paper describes a simple modification of a recently reported decomposition method for determination of selenium in biological tissue by hydride generation atomic absorption. The modified method yielded slightly higher selenium recoveries (3-4%) for selected reference tissues and fish tissue spiked with selenomethionine. Radiotracer experiments indicated that the addition of a...
Authors
W. G. Brumbaugh, M.J. Walther
Computerized data base for exotic fishes: the western United States Computerized data base for exotic fishes: the western United States
Abstract not supplied at this time
Authors
J.D. Williams, Dawn P. Jennings
Fishes of the night. Part 1. The electric eel Fishes of the night. Part 1. The electric eel
Abstract not supplied at this time
Authors
L.G. Nico
Herbicides in surface waters of the midwestern United States: The effect of spring flush Herbicides in surface waters of the midwestern United States: The effect of spring flush
Approximately three-fourths of all preemergent herbicides used in the United States are applied to row crops over a 12-state area, called the "corn belt" (I). The application of these compounds may cause widespread degradation of water quality (2). Because herbicides are water soluble, there is the potential for leaching into groundwater and surface water (3, 4), as well as aerial...
Authors
E.M. Thurman, D. A. Goolsby, M. T. Meyer, D.W. Kolpin
Common and scientific names of fishes from the United States and Canada: Appendix 2, Exotic Fishes Common and scientific names of fishes from the United States and Canada: Appendix 2, Exotic Fishes
Abstract not supplied at this time
Authors
W.R. Courtenay, Dawn P. Jennings, J.D. Williams
Tumor frequencies in walleye (Stizostedion vitreum) and brown bullhead (Ictalurus nebulosus) and sediment contaminants in tributaries of the Laurentian Great Lakes Tumor frequencies in walleye (Stizostedion vitreum) and brown bullhead (Ictalurus nebulosus) and sediment contaminants in tributaries of the Laurentian Great Lakes
To better characterize neoplasm epizootics in the Great Lakes basin and their association with families of contaminants, we sampled five locations: the Fox and Menominee rivers, Lake Michigan; Munuscong Lake, St. Mary's River; and the Black and Cuyahoga rivers, Lake Erie. Frequencies of external and liver tumors were determined for brown bullhead (Ictalurus nebulosus) from all locations...
Authors
Paul C. Baumann, Michael J. Mac, Stephen B. Smith, John C. Harshbarger
Occurrence of a South American Armored Catfish in the Hillsborough River, Florida Occurrence of a South American Armored Catfish in the Hillsborough River, Florida
Abstract not supplied at this time
Authors
M.E. Ludlow, S. J. Walsh
Rivulus immaculatus, a new killifish from Venezuela (Cyprinodontiformes, Rivulidae) Rivulus immaculatus, a new killifish from Venezuela (Cyprinodontiformes, Rivulidae)
Abstract not supplied at this time
Authors
J.E. Thomerson, L.G. Nico, D.C. Taphorn