Publications
Read publications and other informational products to learn more about USGS science occurring in the Mississippi Basin.
Filter Total Items: 5584
The non-marine herpetofauna of Egmont Key, Hillsborough County, Florida The non-marine herpetofauna of Egmont Key, Hillsborough County, Florida
Abstract not supplied at this time
Authors
R. Franz, C.K. Dodd, A.M. Bard
American swallow-tail kite American swallow-tail kite
No abstract available
Authors
J. Allen, Wayne Norling
Use of semipermeable membrane devices for in situ monitoring of polycyclic aromatic hydrocarbons in aquatic environments Use of semipermeable membrane devices for in situ monitoring of polycyclic aromatic hydrocarbons in aquatic environments
A method is given for the recovery, cleanup, and analysis of polycyclic aromatic hydrocarbons (PAHs) that have been sequestered in SPMDs (semipermeable membrane devices). SPMDs are polymeric membranes enclosing lipids, and mimic the bioconcentration process of aquatic animals. SPMDs are used as passive, in situ monitors of contamination by organic pollutants of aquatic environments. The...
Authors
Jon A. Lebo, James L. Zajicek, James N. Huckins, Jimmie D. Petty, Paul H. Peterman
A sediment suspension system for bioassays with small aquatic organisms A sediment suspension system for bioassays with small aquatic organisms
Exposure of aquatic organisms to suspended sediments can impair growth and survival and increase bioaccumulation of sediment-associated contaminants. However, evaluation of the effects of suspended sediments and their associated contaminants on aquatic organisms has been hampered by the lack of a practical and inexpensive exposure system for conducting bioassays. We present a cost...
Authors
M. J. Schmidt-Dallmier, G.J. Atchison, M.T. Steingraeber, B.C. Knights
Herbicide transport in rivers: Importance of hydrology and geochemistry in nonpoint-source contamination Herbicide transport in rivers: Importance of hydrology and geochemistry in nonpoint-source contamination
Alachlor, atrazine, cyanazine, metolachlor, and metribuzin were measured at six sites during 1984 and 1985 in large subbasins within the Cedar River, IA. A computer model separated the Cedar River discharge hydrograph into groundwater and overland-flow components. The concentration of herbicides in the river when groundwater was the major flow component was less than 1.0 μg/L and...
Authors
P. J. Squillace, E.M. Thurman
Lake acidity and mercury content of fish in Darwin National Reserve, Russia Lake acidity and mercury content of fish in Darwin National Reserve, Russia
Darwin National Reserve is a protected natural area on the north-west shore of the Rybinsk Reservoir, 350 km north of Moscow. In June 1989, six lakes in the Reserve and the reservoir were surveyed to assess lake acidity and the mercury content of perch, Perca fluviatilis. Five were seepage lakes with no permanent inlets or outlets and one was a drainage lake with both an inlet and an...
Authors
Terry A. Haines, V. Komov, C. H. Jagoe
Sediment bioaccumulation testing with fish Sediment bioaccumulation testing with fish
In this chapter, we discuss methods for conducting bioaccumulation bioassays with fish; the advantages and disadvantages of using fish rather than invertebrates; and problems associated with bioaccumulation testing, with a special emphasis on statistical treatment.
Authors
Michael J. Mac, Christopher J. Schmitt
Histopathologic biomarkers Histopathologic biomarkers
No abstract available.
Authors
D.E. Hinton, P. C. Baumann, G. R. Gardner, W. E. Hawkins, J. D. Hendricks, R. A. Murchelano, M.S. Okihiro
Water resources data, Iowa, water year 1992 Water resources data, Iowa, water year 1992
No abstract available.
Authors
J.G. Gorman, C.J. Anderson, R.B. Lambert, D. Sneck-Fahrer, W. Wang
Management systems evaluation area; Iowa, Walnut Creek watershed Management systems evaluation area; Iowa, Walnut Creek watershed
No abstract available.
Authors
P. J. Soenksen, J.L. Hatfield, J. L. Baker
Water resources data, Iowa, water year 1991 Water resources data, Iowa, water year 1991
Water resources data for the 1991 water year for Iowa consist of records of stage discharge,and water quality of streams; stage, contents, and water quality of lakes and reservoirs; ground water levels and water quality of ground-water wells. This report contains records of water discharge for 118 stream-gaging stations; stage or contents for 9 lakes and reservoirs; water quality for 6...
Authors
D. J. O’Connell, R.B. Lambert, W.J. Matthes, D. Sneck-Fahrer
A summary of water-resources activities of the U.S. Geological Survey in Iowa, fiscal year 1992 A summary of water-resources activities of the U.S. Geological Survey in Iowa, fiscal year 1992
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 studies; and (3) statewide or regional investigations. These projects are funded through cooperative joint...