Publications
Read publications and other informational products to learn more about USGS science occurring in the Mississippi Basin.
Filter Total Items: 5656
Microcontaminants and reproductive impairment of the Forster's tern on Green Bay, Lake Michigan,1983 Microcontaminants and reproductive impairment of the Forster's tern on Green Bay, Lake Michigan,1983
For the 1983 nesting season, Forster's tern (Sterna forsteri) reproductive success was significantly impaired on organochlorine contaminated Green Bay, Lake Michigan compared to a relatively uncontaminated inland location at Lake Poygan, Wisconsin. Compared with tern eggs from Lake Poygan, eggs from Green Bay had significantly higher median concentrations of 2,3,7,8-tetrachlorodibenzo-p...
Authors
T.J. Kubiak, H.J. Harris, L.M. Smith, T.R. Schwartz, D.L. Stalling, J.A. Trick, L. Sileo, D. E. Docherty, T.C. Erdman
Use of experimental ecosystems in regulatory decision making Use of experimental ecosystems in regulatory decision making
Tiered testing for the effects of chemicals on aquatic ecosystems has begun to include tests at the ecosystem level as a component in pesticide regristration. Because such tests are expensive, regulators and industry need to know what additional information they can gain from such tests relative to the costs of the simpler single-species toxicity bioassays. Requirements for ecosystem...
Authors
Thomas W. La Point, James A. Perry
Chronic no-observed-effect concentrations of aluminum for brook trout exposed in low-calcium, dilute acidic water Chronic no-observed-effect concentrations of aluminum for brook trout exposed in low-calcium, dilute acidic water
No abstract available.
Authors
L. Cleveland, E. E. Little, Ray H. Wiedmeyer, D.R. Buckler
Alluvial stratigraphy of the Potomac River valley bottom near Petersburg and Moorefield, West Virginia Alluvial stratigraphy of the Potomac River valley bottom near Petersburg and Moorefield, West Virginia
No abstract available.
Authors
R. B. Jacobson, R. C. Linton, Meyer Rubin
Acute toxicity of selected herbicides and surfactants to larvae of the midge Chironomus riparius Acute toxicity of selected herbicides and surfactants to larvae of the midge Chironomus riparius
The acute toxicities of eight commercial herbicides and two surfactants to early fourth instar larvae of the midgeChironomus riparius were determined under static conditions. The formulated herbicides tested were Eradicane® (EPTC), Fargo® (triallate), Lasso® (alachlor), ME4 Brominal® (bromoxynil), Ramrod® (propachlor), Rodeo® (glyphosate), Sencor®(metribuzin), and Sutan (+)® (butylate)...
Authors
Kevin J. Buhl, Neil L. Faerber
Ground-water-quality-monitoring program in Iowa: Nitrate and pesticides in shallow aquifers Ground-water-quality-monitoring program in Iowa: Nitrate and pesticides in shallow aquifers
Concern exists about the occurrence of agricultural chemicals, primarily nitrate and pesticides, in shallow ground water. In response to this concern, the focus of the Iowa ground-water-quality-monitoring program has shifted to emphasize nonpoint contaminants. The program, which began in 1982, is operated by the U.S. Geological Survey in cooperation with the University of Iowa Hygienic...
Authors
M.G. Detroy, P.K. Hunt, M.A. Holub
A multiple testing approach for hazard evaluation of complex mixtures in the aquatic environment: the use of diesel oil as a model A multiple testing approach for hazard evaluation of complex mixtures in the aquatic environment: the use of diesel oil as a model
Traditional single species toxicity tests and multiple component laboratory-scaled microcosm assays were combined to assess the toxicological hazard of diesel oil, a model complex mixture, to a model aquatic environment. The immediate impact of diesel oil dosed on a freshwater community was studied in a model pond microcosm over 14 days: a 7-day dosage and a 7-day recovery period. A...
Authors
B. Thomas Johnson
Accretion and canal impacts in a rapidly subsiding wetland II: Feldspar marker horizon technique Accretion and canal impacts in a rapidly subsiding wetland II: Feldspar marker horizon technique
Recent (6–12 month) marsh sediment accretion and accumulation rates were measured with feldspar marker horizons in the vicinity of natural waterways and man-made canals with spoil banks in the rapidly subsiding environment of coastal Louisiana. Annual accretion rates in aSpartina alterniflora salt marsh in the Mississippi deltaic plain averaged 6 mm in marsh adjacent to canals compared...
Authors
Donald R. Cahoon, R.E. Turner
Bone characteristics and metal concentrations in white suckers (Catostomus commersoni) from one neutral and three acidified lakes in Maine Bone characteristics and metal concentrations in white suckers (Catostomus commersoni) from one neutral and three acidified lakes in Maine
The bone characteristics of white suckers, Catostomus commersoni, from four lakes in Maine were studied in relation to lake water quality and metal concentrations in fish. Green Lake had a neutral pH, high buffering capacity, and low aluminum concentrations, whereas the other three lakes had low pH, low buffering capacity, and elevated aluminum concentrations. The concentrations of...
Authors
Steven J. Hamilton, Terry A. Haines
Pattern and process in arid-region salt marshes - Southern California Pattern and process in arid-region salt marshes - Southern California
No abstract available.
Authors
Christopher P. Onuf, Joy B. Zedler
Annual body weight change in ring-neck ducks (Aythya collaris) Annual body weight change in ring-neck ducks (Aythya collaris)
No abstract available.
Authors
William L. Hohman, T. Scott Taylor, Milton W. Weller
Field validation of a habitat suitability index model for the American oyster Field validation of a habitat suitability index model for the American oyster
A habitat suitability index (HSI) model, developed for the American oyster,Crassostrea virginica, along the Gulf of Mexico, was field tested on 38 0.1-ha reef and nonreef sites in Galveston Bay, Texas. The HSI depends upon six (HSI1) or, optionally, eight (HSI2) variables. The six variables are percent of bottom covered with suitable cultch (V1), mean summer water salinity (V2), mean...
Authors
Thomas M. Soniat, Michael S. Brody