Publications
Read publications and other informational products to learn more about USGS science occurring in the Mississippi Basin.
Filter Total Items: 5302
Reptiles and amphibians in the endangered longleaf pine ecosystem
The Coastal Plain of the southeastern United States contains a rich diversity of reptiles and amphibians (herpetofauna). Of the 290 species native to the Southeast, 170 (74 amphibians, 96 reptiles) are found within the range of the remnant longleaf pine (Pinus palustris) ecosystem (Fig. 1). Many of these species are not found elsewhere, particularly those amphibians that require temporary ponds fo
Authors
C. Kenneth Dodd
Amphibians
Amphibians are ecologically important in most freshwater and terrestrial habitats in the United States: they can be numerous, function as both predators and prey, and constitute great biomass. Amphibians have certain physiological (e.g., permeable skin) and ecological (e.g., complex life cycle) traits that could justify their use as bioindicators of environmental health. For example, local decline
Authors
R. Bruce Bury, P. Stephen Corn, C. Kenneth Dodd, Roy W. McDiarmid, Norman J. Scott
Nonindigenous fish
Abstract not supplied at this time
Authors
C.P. Boydstun, P.L. Fuller, J.D. Williams
Water resources data, Iowa, water year 1994
Water resources data for Iowa for the 1994 water year 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 discharge records for 115 gaging stations; stage or contents for 8 lakes and reservoirs; water quality for 6 stream-gaging stations; s
Authors
J.E. May, D. Sneck-Fahrer, J.G. Gorman, R.D. Goodrich, B.K. Nations, V.E. Miller
Reproduction and distribution of bald eagles in Voyageurs National Park, Minnesota, 1973-1993
The bald eagle (Haliaeetus leucocephalus) is classified as a threatened species in Minnesota. In 1973, the National Park Service began monitoring the distribution and reproduction of bald eagles in and immediately adjacent to Voyageurs National Park to obtain data that park management could use to protect bald eagles from the effects of use of the park by visitors and from the expansion of park fa
Authors
Leland H. Grim, Larry W. Kallemeyn
Dietary exposure of mink to carp from Saginaw Bay. 3. Characterization of dietary exposure to planar halogenated hydrocarbons, dioxin equivalents, and biomagnification
Mink are known to be very sensitive to the toxic effects of planar polychlorinated biphenyls (pPCBs), polychlorinated dibenzo-p-dioxins (PCDDs), and polychlorinated dibenzofurans (PCDFs), collectively known as planar halogenated hydrocarbons (PHHs). Previously, we reported the reproductive effects in mink fed a diet containing 10, 20, or 40% fish taken from Saginaw Bay, Lake Huron. The present stu
Authors
Donald E. Tillitt, Robert W. Gale, John C. Meadows, James L. Zajicek, Paul H. Peterman, Silvia N. Heaton, Paul D. Jones, Steven J. Bursian, Timothy J. Kubiak, John P. Giesy, Richard J. Aulerich
Determination of waterborne bioavailable organochlorine pesticide residues in the Lower Missouri River
No abstract available.
Authors
Jimmie D. Petty, James N. Huckins, Carl E. Orazio, Jon A. Lebo, Barry C. Poulton, Robert W. Gale, Collette S. Charbonneau, Edwin M. Kaiser
Comparison of methods for conducting marine and estuarine sediment porewater toxicity tests—extraction, storage, and handling techniques
A series of studies was conducted to compare different porewater extraction techniques and to evaluate the effects of sediment and porewater storage conditions on the toxicity of pore water, using assays with the sea urchin Arbacia punctulata. If care is taken in the selection of materials, several different porewater extraction techniques (pressurized squeezing, centrifugation, vacuum) yield samp
Authors
R.S. Carr, D.C. Chapman
Automated HPLC fractionation of PCDDs and PCDFs and planar and nonplanar PCBs on C18-dispersed PX-21 carbon
No abstract available.
Authors
Kevin P. Feltz, Donald E. Tillitt, Robert W. Gale, Paul H. Peterman
Acute toxicity of ammonia (NH3-N) in sewage effluent to Chironomus riparius: II. Using a generalized linear model
Toxicity of un-ionized ammonia (NH3-N) to the midge, Chironomus riparius was compared, using laboratory culture (well) water and sewage effluent (≈0.4 mg/L NH3-N) in two 96-h, static-renewal toxicity experiments. A generalized linear model was used for data analysis. For the first and second experiments, respectively, LC50 values were 9.4 mg/L (Test 1A) and 6.6 mg/L (Test 2A) for ammonia in well w
Authors
D.P. Monda, D.L. Galat, S.E. Finger, M.S. Kaiser
A survey of recent results in passive sampling of water and air by semipermeable membrane devices
A survey is presented of some recent results for passive sampling of water and air for trace organic contaminants using lipid-filled semipermeable membrane devices (SPMDs). Results of water sampling for trace organochlorine compounds using simultaneously exposed SPMDs and the most universally applied biomonitor (bivalves) are discussed. In general, the total amounts of accumulated analytes availab
Authors
Harry F. Prest, James N. Huckins, Jimmie D. Petty, Sirpa Herve, Jaakko Paasivirta, Pertti Heinonen