Publications
Read publications and other informational products to learn more about USGS science occurring in the Mississippi Basin.
Filter Total Items: 5584
Analysis of the ovarian cycle in black-footed ferrets (Mustela nigripes) by vaginal cytology and fecal hormone measurement Analysis of the ovarian cycle in black-footed ferrets (Mustela nigripes) by vaginal cytology and fecal hormone measurement
Abstract not supplied at this time
Authors
T. S. Gross, C. Wieser, M. Patton
Biomonitoring of lead-contaminated Missouri streams with an assay for erythrocyte δ-aminolevulinic acid dehydratase activity in fish blood Biomonitoring of lead-contaminated Missouri streams with an assay for erythrocyte δ-aminolevulinic acid dehydratase activity in fish blood
The activity of the enzyme δ-aminolevulinic acid dehydratase (ALA-D) in erythrocytes has long been used as a biomarker of lead exposure in humans and waterfowl and, more recently, in fishes. The assay was tested for ALA-D activity in fishes from streams affected by lead in combination with other metals from lead-zinc mining and related activities. Fishes (mostly catostomids) were...
Authors
C.J. Schmitt, M. L. Wildhaber, J. B. Hunn, T. Nash, M. N. Tieger, B. L. Steadman
Caspian tern reproduction in the Saginaw Bay ecosystem following a 100-year flood event Caspian tern reproduction in the Saginaw Bay ecosystem following a 100-year flood event
In the 2 years that followed the 100-year flood incident of September 1986 in the Saginaw River/Bay ecosystem, the reproduction of Caspian terns collapsed and then slowly recovered. Egg viability and fledging rates of hatched chicks were drastically depressed in 1987 and 1988. Eggs from clutches laid later in the year were less viable and chicks hatched from these eggs displayed wasting...
Authors
James P. Ludwig, Heidi J. Auman, Hiroko Kurita, Matthew E. Ludwig, Loraine M. Campbell, John P. Giesy, Donald E. Tillitt, Paul Jones, Nobu Yamashita, Shinsuke Tanabe, Ryo Tatsukawa
Polychlorinated biphenyls in Great Lakes lake trout and their eggs: relations to survival and congener composition 1979-1988 Polychlorinated biphenyls in Great Lakes lake trout and their eggs: relations to survival and congener composition 1979-1988
Eggs taken from lake trout (Salvelinus namaycush) captured from various Great Lakes between 1979 and 1988 were analyzed for individual polychlorinated biphenyl (PCB) congeners. Eggs from the same fish had been previously reared through hatching and early fry development to ascertain egg quality. Tissues from a subsample of the adult females that provided eggs were similarly analyzed...
Authors
Michael J. Mac, Ted R. Schwartz, Carol C. Edsall, Anthony M. Frank
The use of geographic information system technology to compare the environmental impacts of human development on Mobile Bay, Alabama and Galveston Bay, Texas 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
Habitat suitability index model for brook trout in streams of the Southern Blue Ridge Province: Surrogate variables, model evaluation, and suggested improvements Habitat suitability index model for brook trout in streams of the Southern Blue Ridge Province: Surrogate variables, model evaluation, and suggested improvements
Data from several sources were collated and analyzed by correlation, regression, and principal components analysis to define surrrogate variables for use in the brook trout (Salvelinus fontinalis) habitat suitability index (HSI) model, and to evaluate the applicability of the model for assessing habitat in high elevation streams of the southern Blue Ridge Province (SBRP). In all data...
Authors
C. J. Schmitt, A.D. Lemly, P. V. Winger
Behavioral methods for assessing impacts of contaminants on early life stage fishes Behavioral methods for assessing impacts of contaminants on early life stage fishes
No abstract available.
Authors
E. E. Little, J.F. Fairchild, A. J. DeLonay
First collection of rudd, Scardinius erythrophthalmus (Cyprinidae), in the New River, West Virginia First collection of rudd, Scardinius erythrophthalmus (Cyprinidae), in the New River, West Virginia
We collected the first rudd, Scardinius erythrophthalmus (Cyprinidae), from the New (Kanawha) River drainage, West Virginia. The rudd has now been reported from 12 states (Arkansas, Kansas, Illinois, Massachusetts, Maine, Missouri, New York, Oklahoma, Virginia, Wisconsin, and West Virginia) and several major river systems. The rapid spread of the rudd has apparently been facilitated by...
Authors
R.S. Easton, D.J. Orth, N.M. Burkhead
Toxicity and bioaccumulation of waterborne and dietary selenium in juvenile bluegill (Lepomis macrochirus) Toxicity and bioaccumulation of waterborne and dietary selenium in juvenile bluegill (Lepomis macrochirus)
Juvenile bluegill (Lepomis macrochirus) were exposed to waterborne selenium as a 6:1 mixture of selenate to selenite (as Se) for 60 d and to dietary seleno-l-methionine for 90 d. Measured concentrations of total selenium in the waterborne exposure ranged from 0.16 to 2.8 mg/l, and concentrations of seleno-l-methionine in the test diet ranged from 2.3 to 25.0 mg/kg wet weight. Mortality...
Authors
Laverne Cleveland, Edward E. Little, Denny R. Buckler, Raymond H. Wiedmeyer
Agricultural chemical interchange between ground water and surface water, Cedar River basin, Iowa and Minnesota: A study description Agricultural chemical interchange between ground water and surface water, Cedar River basin, Iowa and Minnesota: A study description
A review of the data collected in the Cedar River basin, Iowa and Minnesota, indicates that atrazine is consistently detected in the main-stem river at concentrations greater than 0.10 microgram per liter even during periods of extended base flow. The primary source of atrazine in the river during these periods of base flow is not known. This study is designed to determine how atrazine...
Authors
P. J. Squillace, M. J. Liszewski, E.M. Thurman
Using GIS to determine the effects of contaminated sediments on natural resources in an estuary Using GIS to determine the effects of contaminated sediments on natural resources in an estuary
No abstract available.
Authors
P.F. Roscigno, G. M. Martin, J. B. Johnston, Mary C. Watzin
A geographic information systems technique for monitoring contaminants in Galveston Bay, Texas A geographic information systems technique for monitoring contaminants in Galveston Bay, Texas
A geographic information system (GIS) was used to compile a series of databases containing details concerning metal contamination and pollution sources to study their impacts on the Galveston Bay (TX) ecosystem. Using these databases, a series of maps with various overlays was created with ARC/INFO software. These maps allowed patterns of spatial distribution of numerous variables to be...
Authors
Marcia McNiff, P.F. Roscigno, W. Ji