Publications
Publications from USGS science centers throughout the Southeast Region.
Filter Total Items: 10392
Work plan for determining the occurrence of glyphosate, its transformation product AMPA, other herbicide compounds, and antibiotics in midwestern United States streams, 2002 Work plan for determining the occurrence of glyphosate, its transformation product AMPA, other herbicide compounds, and antibiotics in midwestern United States streams, 2002
Changes in herbicide use in the Midwestern United States have been substantial over the last 5 years. Most significant is a tripling in the use of glyphosate (N-[phosphonomethyl]glycin). Over this same time period (19972001), atrazine use increased by 20 percent and acetochlor use increased by 10 percent, while cyanazine use decreased by 99 percent, alachlor use decreased by 70 percent...
Authors
W.A. Battaglin, E.M. Thurman, D.W. Kolpin, E.A. Scribner, Mark W. Sandstrom, K.M. Kuivila
The effect of polychlorinated naphthalenes and tributyltin on the occurrence of aberrant nuclei in erythroid cells of medaka The effect of polychlorinated naphthalenes and tributyltin on the occurrence of aberrant nuclei in erythroid cells of medaka
The micronucleus test using erythrocytes of the peripheral blood of fish is often conducted to evaluate the genotoxic effects of pollutants under experimental and natural conditions. This report presents information on the production of micronuclei and other nuclear anomalies in erythrocytes of medaka (Oryzias latipes) exposed to three polychlorinated naphthalene (PCN) formulations...
Authors
Melaniya G. Talykina, Diana M. Papoulias, J. Alan Allert, Y.U. Izyuov, Sergio A. Villalobos, John P. Giesy, Donald E. Tillitt
Modeling mangrove forest migration along the southwest coast of Florida under climate change Modeling mangrove forest migration along the southwest coast of Florida under climate change
Mangrove forests dominate in the intertidal zones of the tropical extent of the coast about the Gulf of Mexico, USA. Global climate change forecasts suggest that these coastal forests will be among those ecosystems most immediately threatened by projected increases in sea level and hurricanes. The interactive effects of environmental conditions that prevail in these forests and the...
Authors
Thomas W. Doyle, Garrett F. Girod, Mark A. Books
Predicting coastal retreat in the Florida Big Bend region of the Gulf Coast under climate change induced sea-level rise Predicting coastal retreat in the Florida Big Bend region of the Gulf Coast under climate change induced sea-level rise
Many wildlife preserves and refuges in coastal areas of our nation are slowly being inundated by rising sea-level. Land elevation and tidal flooding are key factors controlling the extent and zonation of coastal habitats. Warming of our global environment threatens to speed the rate of sea-level rise and perhaps further amplify the detrimental effects of tropical storms, droughts, and...
Authors
Thomas W. Doyle, Richard H. Day, Janelda M. Biagas
Geologic framework and hydrogeologic features of the Glen Rose Limestone, Camp Bullis Training Site, Bexar County, Texas Geologic framework and hydrogeologic features of the Glen Rose Limestone, Camp Bullis Training Site, Bexar County, Texas
The Glen Rose Limestone crops out over most of the Camp Bullis Training Site in northern Bexar County, Texas, where it consists of upper and lower members and composes the upper zone and the upper part of the middle zone of the Trinity aquifer. Uncharacteristically permeable in northern Bexar County, the Glen Rose Limestone can provide avenues for recharge to and potential contamination...
Authors
Allan K. Clark
Uncertainty in spatially explicit animal dispersal models Uncertainty in spatially explicit animal dispersal models
Uncertainty in estimates of survival of dispersing animals is a vexing difficulty in conservation biology. The current notion is that this uncertainty decreases the usefulness of spatially explicit population models in particular. We examined this problem by comparing dispersal models of three levels of complexity: (1) an event-based binomial model that considers only the occurrence of...
Authors
Wolf M. Mooij, Donald L. DeAngelis
A longitudinal assessment of the aquatic macroinvertebrate community in the channelized lower Missouri River A longitudinal assessment of the aquatic macroinvertebrate community in the channelized lower Missouri River
We conducted an aquatic macroinvertebrate assessment in the channelized reach of the lower Missouri River, and used statistical analysis of individual metrics and multimetric scores to identify community response patterns and evaluate relative biological condition. We examined longitudinal site differences that are potentially associated with water qualityrelated factors originating from...
Authors
Barry C. Poulton, Mark L. Wildhaber, Collette S. Charbonneau, James F. Fairchild, Brad G. Mueller, Christopher J. Schmitt
Selected hydrogeologic datasets for the Antlers Aquifer, Texas Selected hydrogeologic datasets for the Antlers Aquifer, Texas
No abstract available.
Authors
Natalie A. Houston, C. Amanda Garcia, Eric W. Strom
Selected hydrogeologic datasets for the Glen Rose Aquifer, Texas Selected hydrogeologic datasets for the Glen Rose Aquifer, Texas
No abstract available.
Authors
Natalie A. Houston, C. Amanda Garcia, Eric W. Strom
Selected hydrogeologic datasets for the Woodbine Aquifer, Texas Selected hydrogeologic datasets for the Woodbine Aquifer, Texas
No abstract available.
Authors
Natalie A. Houston, C. Amanda Garcia, Eric W. Strom
Long-term hydrologic monitoring protocol for coastal ecosystems Long-term hydrologic monitoring protocol for coastal ecosystems
No abstract available.
Authors
Timothy D. McCobb, Peter K. Weiskel