Publications
Read publications and other informational products to learn more about USGS science occurring in the Mississippi Basin.
Filter Total Items: 5567
Rising water levels and the future of southeastern Louisiana swamp forests Rising water levels and the future of southeastern Louisiana swamp forests
An important factor contributing to the deterioration of wetland forests in Louisiana is increasing water levels resulting from eustatic sea-level rise and subsidence. Analyses of long-term water level records from the Barataria and Verret watersheds in southeastern Louisiana indicate an apparent sea level rise of about 1-m per century, mainly the result of subsidence. Permanent study...
Authors
W.H. Conner, M. Brody
Water resources data, Iowa, water year 1989 Water resources data, Iowa, water year 1989
Water resources data for the 1989 water year for Iowa consist of records of stage, discharge, and water quality of streams; stage, contents, and water quality of lakes and reservoirs; ground water levels and water quality of ground-water wells. This report contains records of water discharge for 117 stream-gaging stations; stage or contents for 8 lakes and reservoirs; water quality for 6...
Authors
D. J. O’Connell, M. J. Liszewski, R.B. Lambert, W.J. Matthes
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
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
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
Workshop summary: Habitat loss and its effect on waterfowl Workshop summary: Habitat loss and its effect on waterfowl
No abstract available.
Authors
Robert E. Stewart, Gary Krapu, Bruce Conant, H. Franklin Percival, David L. Hall
Habitat relationships of island nesting seabirds along Coastal Louisiana Habitat relationships of island nesting seabirds along Coastal Louisiana
Seabirds in the saline marsh of coastal Louisiana nest on the islands that are more isolated, smaller, have lower percentages of woody vegetation, and higher percentages of herbaceous vegetation and beach habitat. Only moderate variation in these habitat features was demonstrated among years of colonization. The factors causing these preferences appear to be protection from mammalian...
Authors
Richard D. Greer, Carroll L. Cordes, Stanley H. Anderson
Yellow-headed Blackbird nesting in Iowa: A twenty year follow-up Yellow-headed Blackbird nesting in Iowa: A twenty year follow-up
No abstract available
Authors
Mike Brown
Evaluation of greentree reservoir nanagement options in Arkansas, Evaluation of greentree reservoir nanagement options in Arkansas,
No abstract available
Authors
James A. Allen, James T. Teaford, Edward Pendleton, M. Brody