Publications
Read publications and other informational products to learn more about USGS science occurring in the Mississippi Basin.
Filter Total Items: 5654
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
Strategies for snake conservation Strategies for snake conservation
Abstract not supplied at this time
Authors
C.K. Dodd
Using gis and image processing technology to assist wetland planning, protection, and restoration in coastal Louisiana 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
Sediment toxicity testing: Comparison of methods and evaluation of influencing factors Sediment toxicity testing: Comparison of methods and evaluation of influencing factors
No abstract available.
Authors
P. V. Winger, P. J. Lasier
Selected papers on agricultural chemicals in water resources of the Midcontinental United States Selected papers on agricultural chemicals in water resources of the Midcontinental United States
No abstract available.
Authors
D. A. Goolsby, L.L. Boyer, G. E. Mallard
2,3,7,8-Tetrachlorodibenzo-p-dioxin equivalents in tissues of birds at Green Bay, Wisconsin, USA 2,3,7,8-Tetrachlorodibenzo-p-dioxin equivalents in tissues of birds at Green Bay, Wisconsin, USA
The environment has become contaminated with complex mixtures of planar, chlorinated hydrocarbons (PCHs) such as polychlorinated biphenyls (PCBs), polychlorinated dibenzo-p-dioxins (PCDDs), polychlorinated dibenzofurans (PCDFs) and structurally similar compounds. Because the potencies of individual congeners to cause the same adverse effects vary greatly and the relative as well as...
Authors
Paul D. Jones, John P. Giesy, John L. Newsted, David A. Verbrugge, Donald L. Beaver, Gerald T. Ankley, Donald E. Tillitt, Keith B. Lodge, Gerald J. Niemi
Acute toxicity of the herbicide bromoxynil to Daphnia magna Acute toxicity of the herbicide bromoxynil to Daphnia magna
The acute toxicities of technical-grade bromoxynil octanoate (BO) and two commercial formulations, Buctril® and Bronate®, to 24-h-old neonate Daphnia magna (Straus) were determined in soft, hard, and oligosaline water. In addition, effects of life stage, feeding, aging the herbicide, and exposure duration on BO toxicity to daphnids were investigated. Regardless of formulation, life...
Authors
Kevin J. Buhl, Steven J. Hamilton, James C. Schmulbach
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
Multiple temporal and spatial remote sensing data as inputs into a landcover resource geographic information system Multiple temporal and spatial remote sensing data as inputs into a landcover resource geographic information system
No abstract available.
Authors
Elijah Ramsey III, Craig A. Johnson
Preliminary analysis of spectral data collected for the purpose of wetland discrimination Preliminary analysis of spectral data collected for the purpose of wetland discrimination
No abstract available.
Authors
Elijah Ramsey III, R. Spell, James B. Johnston
Knowledge-based gis approaches: A prototype expert system for wetland resource management Knowledge-based gis approaches: A prototype expert system for wetland resource management
No abstract available.
Authors
Wei Ji, James B. Johnston, Marcia McNiff, Loyd C. Mitchell