Publications
Publications from USGS science centers throughout the Southeast Region.
Filter Total Items: 9967
Current tank useful for observing small stream fishes
Abstract not supplied at this time
Authors
N.M. Burkhead, J.D. Williams
Research on the Okaloosa darter focuses on competition and habitat use
Abstract not supplied at this time
Authors
N.M. Burkhead, J.D. Williams
Toxicity of inorganic and organic selenium to Daphnia magna (cladocera) and Chironomus riparius (diptera)
Elevated concentrations of selenium (Se) have been previously measured in biota sampled from the Kesterson National Wildlife Refuge (KNWR) in the San Joaquin Valley of central California. We conducted acute and chronic toxicity tests with the cladoceran Daphnia magna and the midge Chironomus riparius to determine the toxicity or bioaccumulation of waterborne Se in a reconstituted water similar to
Authors
Christopher G. Ingersoll, F.J. Dwyer, T.W. May
Toxicity of organic selenium in the diet to chinook salmon
The toxicity of two organoselenium diets was evaluated in 90- to 120-d partial life cycle tests with two life stages of chinook salmon (Oncorhynchus tshawytscha Walbaum). One of the diets contained fish meal made from high-selenium mosquitofish (Gambusia affinis Baird and Girard) collected from the selenium-laden San Luis Drain, California (here termed SLD diet) and the other contained meal made f
Authors
Steven J. Hamilton, Kevin J. Buhl, Neil L. Faerber, Fern A. Bullard, Raymond H. Wiedmeyer
Field trip guide-American Water Resources Association
No abstract available.
Authors
Matthew C. Larsen
Hydrology of the Arbuckle Mountains area, south-central Oklahoma
Rocks that make up the Arbuckle-Simpson aquifer crop out over ~500 mi2 in the Arbuckle Mountains province in south-central Oklahoma. The aquifer consists of limestone, dolomite, and sandstone of the Arbuckle and Simpson Groups of Late Cambrian to Middle Ordovician age and is about 5,000-9,000 ft thick. The rocks were subjected to intensive folding and faulting associated with major uplift of the a
Authors
Roy W. Fairchild, Ronald L. Hanson, Robert E. Davis
Establishment of bottomland oak plantations on the Yazoo National Wildlife Refuge complex
Stocking, height and diameter growth, and invasion of both herbaceous and woody plant species are reported for 5 direct seeded and 5 planted seedling stands of bottomland oaks, all of which were between 4 and 8 years old. Stocking was generally higher in the planted seedling stands. Both height and diameter growth were substantially higher in the planted seedling stands. Low stocking and poor grow
Authors
J. A. Allen
Homestead tree planting in two rural Swazi communities
Tree planting practices were investigated on a total of 95 homesteads in two communities in rural Swaziland. Information was also collected on socioeconomic characteristics of the homesteads. In both the study areas, Sigombeni and Bhekinkosi, there was considerable variation amongst individual homesteads in size, relative wealth (as indicated by cattle and motor vehicle ownership), and amount and
Authors
James A. Allen
Partitioning and bioavailability of mercury in an experimentally acidified Wisconsin lake
We studied the partitioning of mercury (Hg) among air, water, sediments and fish at Little Rock Lake, a clear water seepage lake in north-central Wisconsin. The lake was divided with a sea curtain into two basins, one acidified with sulfuric acid to pH 5.6 for two years and the other an untreated reference site (mean pH 6.1), to document the effects of acidification. Trace-metal-free protocols wer
Authors
James G. Wiener, William F. Fitzgerald, Carl J. Watras, Ronald G. Rada
A summary of water-resources activities of the U.S. Geological Survey in Iowa; fiscal year 1990
Water resources activities of the U.S. Geological Survey in Iowa consist of collecting hydrologic data and conducting interpretive studies. Hydrologic investigations in Iowa are made through three basic types of projects: (1) hydrologic data-collection programs; (2) local or areal hydrologic studies; and (3) statewide or regional investigations. These projects are funded through cooperative joint-
Ground-water conditions in Georgia, 1989
No abstract available.
Authors
M.F. Peck, C. N. Joiner, J.S. Clarke, A.M. Creesler
Evaluation of site-selection criteria, well design, monitoring techniques, and cost analysis for a ground-water supply in Piedmont crystalline rocks, North Carolina
A statistical analysis of data from wells drilled into the crystalline rocks of the Piedmont and Blue Ridge provinces of North Carolina verified and refined previously proposed criteria for the siting of wells to obtain greater than average yields. An opportunity to test the criteria was provided by the expansion of the town of Cary's municipal ground-water system. Three criteria were used: type o
Authors
Charles C. Daniel