Publications
Read publications and other informational products to learn more about USGS science occurring in the Mississippi Basin.
Filter Total Items: 5584
Effects of land use and hydrogeology on the water quality of alluvial aquifers in eastern Iowa and southern Minnesota, 1997 Effects of land use and hydrogeology on the water quality of alluvial aquifers in eastern Iowa and southern Minnesota, 1997
Ground-water samples were collected from monitoring wells at 31 agricultural and 30 urban sites in the Eastern Iowa Basins study unit during June–August 1997 to evaluate the effects of land use and hydrogeology on the water quality of alluvial aquifers. Ground-water samples were analyzed for common ions, nutrients, dissolved organic carbon, tritium, radon-222, pesticides and pesticide...
Authors
Mark E. Savoca, Eric M. Sadorf, S. Mike Linhart, Kim K.B. Akers
Effects of land use on recharge potential of surficial and shallow bedrock aquifers in the upper Illinois River basin Effects of land use on recharge potential of surficial and shallow bedrock aquifers in the upper Illinois River basin
The upper Illinois River Basin (UIRB) is the 10,949-square-mile drainage area upstream from Ottawa, Illinois on the Illinois River and is one of the U.S. Geological Survey's National Water-Quality Assessment (NAWQA) program study units. To assist in the interpretation of groundwater data that will be collected during the course of the UIRB study, the study-unit team designed a spatial...
Authors
Terri Arnold, Michael J. Friedel
Distribution of metals during digestion by cutthroat trout fed benthic invertebrates contaminated in the Clark Fork River, Montana and the Coeur d'Alene River, Idaho, U.S.A., and fed artificially contaminated Artemia Distribution of metals during digestion by cutthroat trout fed benthic invertebrates contaminated in the Clark Fork River, Montana and the Coeur d'Alene River, Idaho, U.S.A., and fed artificially contaminated Artemia
The concentrations of essential amino acids in three, undigested invertebrate diets collected from the Clark Fork River (CFR) for cutthroat trout were similar to each other, but were c. 25–75% less than Artemia that were exposed to a mixture of arsenic, copper, cadmium, lead and zinc in the laboratory. The Artemia diet appeared less palatable and the texture, quantity and appearance of...
Authors
A.M. Farag, M.J. Suedkamp, J.S. Meyer, R. Barrows, D. F. Woodward
Quantifying solar spectral irradiance in aquatic habitats for the assessment of photoenhanced toxicity Quantifying solar spectral irradiance in aquatic habitats for the assessment of photoenhanced toxicity
The spectra and intensity of solar radiation (solar spectral irradiance [SSI]) was quantified in selected aquatic habitats in the vicinity of an oil field on the California coast. Solar spectral irradiance measurements consisted of spectral scans (280–700 nm) and radiometric measurements of ultraviolet (UV): UVB (280–320 nm) and UVA (320–400 nm). Solar spectral irradiance measurements...
Authors
M.G. Barron, E. E. Little, R. Calfee, S. Diamond
Pattern and process of land loss in the Mississippi Delta: A spatial and temporal analysis of wetland habitat change Pattern and process of land loss in the Mississippi Delta: A spatial and temporal analysis of wetland habitat change
An earlier investigation (Turner 1997) concluded that most of the coastal wetland loss in Louisiana was caused by the effects of canal dredging, that loss was near zero in the absence of canals, and that land loss had decreased to near zero by the late 1990s. This analysis was based on a 15-min quadrangle (approximately 68,000 ha) scale that is too large to isolate processes responsible...
Authors
John W. Day, Gary P. Shaffer, Louis D. Britsch, Denise J. Reed, Suzanne Hawes, Donald R. Cahoon
The integration of gis and image processing technology for monitoring wetland restoration projects The integration of gis and image processing technology for monitoring wetland restoration projects
No abstract available.
Authors
James B. Johnston, J. Barras, S. Hartley, D. A. Fuller, Gregory D. Steyer
The ecological condition of estuaries in the Gulf of Mexico The ecological condition of estuaries in the Gulf of Mexico
The Gulf of Mexico is a vast natural resource encompassing the coastal areas of western Florida, Alabama, Mississippi, Louisiana, and Texas, as well as a portion of Mexico. Many estuaries flow into the Gulf of Mexico and serve as nursery grounds for fish, habitat for a wide variety of wildlife, shipping routes, and a source of recreation. Estuarine-dependent species constitute more than...
Impacts of hazards and disasters on coastal ecosystems: The hidden costs to society Impacts of hazards and disasters on coastal ecosystems: The hidden costs to society
No abstract available.
Authors
James W. Good, Virginia Burkett
Sedimentation, consolidation and surface elevation change in two salt marshes of the Mississippi River Deltaic Plan: Geotechnical aspects of wetland loss Sedimentation, consolidation and surface elevation change in two salt marshes of the Mississippi River Deltaic Plan: Geotechnical aspects of wetland loss
No abstract available
Authors
G. Paul Kemp, J.W. Day, Denise J. Reed, Donald R. Cahoon, Menglou Wang
Whole system material fluxes within meadows of Vallisneria americana from Lake Pontchartrain, LA: Effects of light and nutrient manipulations Whole system material fluxes within meadows of Vallisneria americana from Lake Pontchartrain, LA: Effects of light and nutrient manipulations
No abstract available
Authors
Ronald G. Boustany, William M. Rizzo
Salt marsh plant colonization, growth, and dominance on large mudflats created using dredged sediments Salt marsh plant colonization, growth, and dominance on large mudflats created using dredged sediments
No abstract available
Authors
C. Edward Proffitt, Jennifer Young
Pattern and process of land loss in the Louisiana coastal zone: An analysis of spatial and temporal patterns of wetland habitat change Pattern and process of land loss in the Louisiana coastal zone: An analysis of spatial and temporal patterns of wetland habitat change
No abstract available.
Authors
John W. Day, Gary P. Shaffer, Louis D. Britsch, Denise J. Reed, Suzanne Hawes, Donald R. Cahoon