Publications
Publications from USGS science centers throughout the Southeast Region.
Filter Total Items: 10392
Direct assessment of groundwater vulnerability from single observations of multiple contaminants Direct assessment of groundwater vulnerability from single observations of multiple contaminants
Groundwater vulnerability is a central concept in pollution risk assessment, yet its estimation has been largely a matter of expert judgment. This work applies a method for the direct calculation of vulnerability from monitoring well observations of pesticide concentrations. The method has two major advantages: it is independent of the compounds being examined, and it has a direct...
Authors
Fred Worrall, Dana W. Kolpin
Approaches to developing sediment quality guidelines for PAHs: Chapter 17 Approaches to developing sediment quality guidelines for PAHs: Chapter 17
No abstract available.
Authors
David R. Mount, Christopher G. Ingersoll, Joy A. McGrath
In praise of mechanistically-rich models In praise of mechanistically-rich models
Quantitative models are crucial to almost every area of ecosystem science. They provide a logical structure that guides and informs empirical observations of ecosystem processes. They play a particularly crucial role in synthesizing and integrating our understanding of the immense diversity of ecosystem structure and function. Increasingly, models are being called on to predict the...
Authors
Donald L. DeAngelis, Wolf M. Mooij
A comparison of measures of riverbed form for evaluating distributions of benthic fishes A comparison of measures of riverbed form for evaluating distributions of benthic fishes
A method to quantitatively characterize the bed forms of a large river and a preliminary test of the relationship between bed-form characteristics and catch per unit area of benthic fishes is presented. We used analog paper recordings of bathymetric data from the Missouri River and fish data collected from 1996 to 1998 at both the segment (???101-102-km) and macrohabitat (???10-1-100-km)...
Authors
Mark L. Wildhaber, Peter J. Lamberson, David L. Galat
Wildlife mortality on Highway U.S. 441 across Paynes Prairie, Alachua County, Florida Wildlife mortality on Highway U.S. 441 across Paynes Prairie, Alachua County, Florida
Abstract not supplied at this time
Authors
L. L. Smith, C.K. Dodd
Leaf litterbags: factors affecting capture of stream-dwelling salamanders Leaf litterbags: factors affecting capture of stream-dwelling salamanders
No abstract available.
Authors
J. L. Waldron, C. Kenneth Dodd, Jeffrey D. Corser
Water resources data, North Carolina, water year 2002. Volume 1A: Surface-water records Water resources data, North Carolina, water year 2002. Volume 1A: Surface-water records
Water-resources data for the 2002 water year for North Carolina consist of records of stage, discharge, water quality for streams; stage and contents for lakes and reservoirs; precipitation; and ground-water levels and water quality of ground water. Volume 1 contains discharge records for 211 gaging stations; stage and contents for 62 lakes and reservoirs; stage for 20 gaging stations...
Authors
B.C. Ragland, D. A. Walters, G.D. Cartano, J.E. Taylor
Geographic Information System Tools for Conservation Planning: User's Manual Geographic Information System Tools for Conservation Planning: User's Manual
Public and private land managers desire better ways to incorporate landscape, species, and habitat relations into their conservation planning processes. We present three tools, developed for the Environmental Systems Research Institute?s ArcView 3.x platform, applicable to many types of wildlife conservation management and planning efforts. These tools provide managers and planners with...
Authors
Timothy J. Fox, Jason J. Rohweder, K.P. Kenow, C. E. Korschgen, H.C. DeHaan
Occurrence, trends, and sources in particle-associated contaminants in selected streams and lakes in Fort Worth, Texas Occurrence, trends, and sources in particle-associated contaminants in selected streams and lakes in Fort Worth, Texas
Several lakes and stream segments in Fort Worth, Texas, have fish consumption bans because of elevated levels of chlordane, dieldrin, DDE, and polychlorinated biphenyls (PCBs). This study was undertaken to evaluate current loading, trends, and sources in these long-banned contaminants and other particle-associated contaminants commonly found in urban areas. Sampling included suspended...
Authors
Peter C. Van Metre, Jennifer T. Wilson, Glenn R. Harwell, Marcus O. Gary, Franklin T. Heitmuller, Barbara Mahler
Bathymetric mapping, sediment quality, and water quality of Lake Delhi, Iowa, 2001-02 Bathymetric mapping, sediment quality, and water quality of Lake Delhi, Iowa, 2001-02
Lake Delhi was formed in 1929 when the Interstate Power Company dammed the Maquoketa River near Delhi, Iowa, for generation of hydroelectric power. The resulting 450-acre lake became a popular area in eastern Iowa for boating, swimming, and fishing. Hydroelectric power generation ended in 1973, and lakeside residents purchased the dam to maintain the recreational opportunities of the...
Authors
Douglas J. Schnoebelen, Jason C. McVay, Kimberlee K. Barnes, Kent Becher
Interactions of an insecticide, herbicide, and natural stressors in amphibian community mesocosms Interactions of an insecticide, herbicide, and natural stressors in amphibian community mesocosms
Amphibians developing in wetlands embedded within or near agricultural lands may frequently encounter chemical mixtures. The objectives of our study were to determine the effects that post-application concentrations of an insecticide (carbaryl) and an herbicide (atrazine) have on body mass, development, and survival of two anuran species (southern leopard frog, Rana sphenocephala...
Authors
M.D. Boone, S.M. James
Using strip-transect aerial surveys to estimate manatee abundance and population trend in the Ten Thousand Islands Region of southwest Florida Using strip-transect aerial surveys to estimate manatee abundance and population trend in the Ten Thousand Islands Region of southwest Florida
No abstract available.
Authors
Dean E. Easton, Lynn W. Lefebvre, T.J. Doyle