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Publications

Publications from USGS science centers throughout the Southeast Region.

Filter Total Items: 10384

Southern region: Forest research reort Southern region: Forest research reort

No abstract available.
Authors
Virginia Burkett, Scott Beasley, Peter Roussopoulos, James P. Barnett

The potential impact of herbivores on the susceptibility of the marsh plant Sagittaria lancifolia to saltwater intrusion in coastal wetlands The potential impact of herbivores on the susceptibility of the marsh plant Sagittaria lancifolia to saltwater intrusion in coastal wetlands

The objective of this study was to experimentally evaluate the effects of simulated herbivory on the ability of a freshwater marsh plant to recover from temporary saltwater intrusion such as can be caused by tropical storms. Sods containing Sagittaria lancifolia, a dominant plant in interior coastal marshes, were manipulated in the field so as to subject plants to a pulse of 15‰ salt...
Authors
James B. Grace, Mark Ford

Small watershed studies: Analytical approaches for understanding ecosystem response to environmental change Small watershed studies: Analytical approaches for understanding ecosystem response to environmental change

Biogeochemical studies in small watersheds provide an analytical approach to understand how ecosystems respond to natural climatic variations and human-induced environmental change. Small watersheds, usually less than 5 km2, are small enough to permit characterization and understanding of ecosystem processes within relatively simple, homogeneous biological and physical settings; yet they...
Authors
Thomas G. Huntington, R. P. Hooper, Peter S. Murdoch

An examination of organic/carbonate-bound metals in bottom sediments of Bayou Trepagnier, Louisiana An examination of organic/carbonate-bound metals in bottom sediments of Bayou Trepagnier, Louisiana

To assess potential impact of metals on the biosphere in bottom sediments, forms were determined for selected metals in a southeastern Louisiana bayou, Bayou (B.) Trepagnier, which has been impacted by industrial activity at its head by a manufacturing complex (MC). Ten pairs of cores along the length of the bayou allowed variation with distance to be studied. Sequential extractions...
Authors
Timothy J. Dore, Alan M. Bailey, John W. McCoy, Glenn W. Johnson

Initial comparison of bird communities of three southern forested wetlands Initial comparison of bird communities of three southern forested wetlands

No abstract available.
Authors
P.B. Hamel, Wylie C. Barrow, Richard A. Fischer, Michael P. Guilfoyle, Terry J. Spengler, James S. Wakely

Floods in Central Texas, December 1991 Floods in Central Texas, December 1991

Record-breaking peak discharges were recorded at eight U.S. Geological Survey (USGS) streamflow-gaging stations in central Texas during December 1991 (fig. 1), and substantial peak discharges also occurred at numerous other stations. Large peak discharges during December are unusual in central Texas. The rainfall causing the flooding began on December 18, with 6-day totals exceeding 10...
Authors
H. R. Hejl, Raymond M. Slade, Marshall E. Jennings

Effects of spatial and temporal variation of acid-volatile sulfide on the bioavailability of copper and zinc in freshwater sediments Effects of spatial and temporal variation of acid-volatile sulfide on the bioavailability of copper and zinc in freshwater sediments

Variation in concentrations of acid-volatile sulfide (AVS) in sediments from the upper Clark Fork River of Montana, USA, was associated with differences in bioaccumulation of Cu and Zn and growth of larvae of the midge, Chironomus tentans. Growth of midge larvae was significantly greater and bioaccumulation of Cu was significantly less in surface sections (0–3 cm depth) of sediment cores...
Authors
John M. Besser, Christopher G. Ingersoll, John P. Giesty
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