Publications
Read publications and other informational products to learn more about USGS science occurring in the Mississippi Basin.
Filter Total Items: 5568
Decomposition of saltmeadow cordgrass (Spartina patens) in Louisiana coastal marshes Decomposition of saltmeadow cordgrass (Spartina patens) in Louisiana coastal marshes
In Louisiana, plant production rates and associated decomposition rates may be important in offsetting high rates of land loss and subsidence in organic marsh soils. Decomposition of Spartina patens shoot and leaf material was studied by using litter bags in mesohaline marshes in the Barataria and Terrebonne basins of coastal Louisiana. Spartina patens decomposed very slowly with an...
Authors
A.L. Foote, K.A. Reynolds
Use of inexpensive pressure transducers for measuring water levels in wells Use of inexpensive pressure transducers for measuring water levels in wells
Frequent measurement of below ground water levels at multiple locations is an important component of many wetland ecosystem studies. These measurements, however, are usually time consuming, labor intensive, and expensive. This paper describes a water-level sensor that is inexpensive and easy to construct. The sensor is placed below the expected low water level in a shallow well and, when...
Authors
B. D. Keeland, J.F. Dowd, W.S. Hardegree
Investigation into avian mortality in the Playa Lakes region of southeastern New Mexico: Final Report - June 1997 Investigation into avian mortality in the Playa Lakes region of southeastern New Mexico: Final Report - June 1997
This Final Report is a review of work on a cooperative study undertaken by the USGS Biological Resources Division's National Wildlife Health Center (NWHC) and National Wetlands Research Center (NWRC; formerly the Southern Science Center) from 1994 through 1997. The study was initiated at the request of the Bureau of Land Management (BLM), through a request to the former National...
Authors
F. Joshua Dein, Laurie A. Baeten, Melody K. Moore, Michael D. Samuel, Paul D. Miller, Christopher Murphy, Steven Sissler, Clinton W. Jeske, Joseph R. Jehl, J. S. Yaeger, B. Bauer, Shiela A. Mahoney
Status and restoration of the Etowah River, an imperiled Southern Appalachian Ecosystem Status and restoration of the Etowah River, an imperiled Southern Appalachian Ecosystem
Abstract not supplied at this time
Authors
N.M. Burkhead, S. J. Walsh, B. J. Freeman, J.D. Williams
Acute toxicity of fire-retardant and foam-suppressant chemicals to yalella azteca (Saussure) Acute toxicity of fire-retardant and foam-suppressant chemicals to yalella azteca (Saussure)
Acute toxicity tests were conducted with Hyalella azteca Saussure (an amphipod) exposed in soft and hard waters to three fire retardants (Fire-Trol GTS-R, Fire-Trol LCG-R, and Phos-Chek D75-F) and two foam suppressants (Phos-Chek WD-881 and Silv-Ex). The chemicals were slightly to moderately toxic to amphipods. The most toxic chemical to amphipods in soft and hard water was Phos-Chek WD...
Authors
Susan F. McDonald, Steven J. Hamilton, Kevin J. Buhl, James F. Heisinger
Cutthroat trout avoidance of metals and conditions characteristic of a mining waste site: Coeur d'Alene River, Idaho Cutthroat trout avoidance of metals and conditions characteristic of a mining waste site: Coeur d'Alene River, Idaho
The South Fork basin of the Coeur d'Alene River, Idaho has been an area of heavy mining activity since the 1880s. The mining operations have resulted in elevated concentrations of metals in surface water, most notably cadmium, lead, zinc, and, to a lesser extent, copper. The metals affected surface water quality downstream in the Coeur d'Alene basin and are suspected to be one of the...
Authors
Daniel F. Woodward, Jack N. Goldstein, Aida M. Farag, William G. Brumbaugh
Seasonal distribution, movements and habitat associations of northern squawfish in two Lower Columbia River reservoirs Seasonal distribution, movements and habitat associations of northern squawfish in two Lower Columbia River reservoirs
We tracked 335 northern squawfish implanted with radio transmitters in the Columbia River in May–December 1993 and May–September 1994. Most fish were released near The Dalles and John Day dams, with the remaining fish released into reservoir areas away from dams. We used boats with mounted Yagi antennas, fixed site receiver stations near the dams and aerial surveys to track movements of...
Authors
Theresa L. Martinelli, Rip S. Shively
Coastal wetlands and climate change Coastal wetlands and climate change
Abstract has not been submitted
Authors
G.R. Guntenspergen, B.A. Vairin, V.R. Burkett, D. McGrath
Facing the challenges of invasive alien species in North America Facing the challenges of invasive alien species in North America
Abstract not supplied at this time
Authors
I.E. Effort, C. Macias Garcia, J.D. Williams
Natural history notes: Scinella lateralis. (Ground Skink). Predation Natural history notes: Scinella lateralis. (Ground Skink). Predation
Abstract not supplied at this time
Authors
C.K. Dodd, Marian L. Griffey
Effects of simulated ground-water pumping and recharge on ground-water flow in Cape Cod, Martha's Vineyard, and Nantucket Island basins, Massachusetts Effects of simulated ground-water pumping and recharge on ground-water flow in Cape Cod, Martha's Vineyard, and Nantucket Island basins, Massachusetts
Three-dimensional transient ground-water-flow models that simulate both freshwater and saltwater flow were developed for the flow cells of the Cape Cod Basin to determine the effects of long-term pumping and recharge, seasonal fluctuations in pumping and recharge, and prolonged reductions of natural recharge, on the position of the freshwater-saltwater interface, water-table and pond...
Authors
John P. Masterson, Paul M. Barlow