Publications
Read publications and other informational products to learn more about USGS science occurring in the Mississippi Basin.
Filter Total Items: 5568
The rare newt of Trail Ridge The rare newt of Trail Ridge
Abstract not supplied at this time
Authors
C.K. Dodd
Nonindigenous fish Nonindigenous fish
Abstract not supplied at this time
Authors
C.P. Boydstun, P.L. Fuller, J.D. Williams
Freshwater mussels: a neglected and declining aquatic resource Freshwater mussels: a neglected and declining aquatic resource
Abstract not supplied at this time
Authors
J.D. Williams, R. J. Neves
Automated HPLC fractionation of PCDDs and PCDFs and planar and nonplanar PCBs on C18-dispersed PX-21 carbon 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
Biogeography and status of the striped newt (Notophthalmus perstriatus) in Georgia, USA Biogeography and status of the striped newt (Notophthalmus perstriatus) in Georgia, USA
Abstract not supplied at this time
Authors
C.K. Dodd, L.V. LaClaire
Size-dependent, sex-dependent and seasonal changes in insulin-lige growth-factor-I in the loggerhead sea turtle Size-dependent, sex-dependent and seasonal changes in insulin-lige growth-factor-I in the loggerhead sea turtle
This study examines size-dependent, sex-dependent, and seasonal fluctuations in plasma insulin-like growth factor-I (IGF-I) concentrations in loggerhead sea turtles (Caretta caretta). Loggerhead turtles (n = 158) were captured in shrimp trawler nets during a 12-month survey in Cape Canaveral Channel, Florida. Plasma samples were analyzed using a validated heterologous radioimmunoassay...
Authors
D.A. Crain, A.B. Bolten, K.A. Bjorndal, L. J. Guillette, T. S. Gross
Toxicity and bioaccumulation of sediment-associated contaminants using freshwater invertebrates: A review of methods and applications Toxicity and bioaccumulation of sediment-associated contaminants using freshwater invertebrates: A review of methods and applications
This paper reviews recent developments in methods for evaluating the toxicity and bioaccumulation of contaminants associated with freshwater sediments and summarizes example case studies demonstrating the application of these methods. Over the past decade, research has emphasized development of more specific testing procedures for conducting 10-d toxicity tests with the amphipod Hyalella...
Authors
C.G. Ingersoll, G.T. Ankley, D.A. Benoit, E.L. Brunson, G.A. Burton, F.J. Dwyer, R.A. Hoke, P.F. Landrum, T. J. Norberg-King, P. V. Winger
Organochlorine residues in bat guano from nine Mexican caves, 1991 Organochlorine residues in bat guano from nine Mexican caves, 1991
Samples of bat guano, primarily from Mexican free-tailed bats (Tadarida brasiliensis), were collected at nine bat roosts in caves in northern and eastern Mexico and analysed for organochlorine residues. DDE, the most abundant residue found in each cave, was highest (0.99 p.p.m. dry weight) at Ojuela Cave, Durango. Other studies of DDE in bat guano indicate that this concentration is too...
Authors
D. R. Clark, A. Moreno-Valdez, M.A. Mora
Occurrence of active and inactive herbicide ingredients at selected sites in Iowa Occurrence of active and inactive herbicide ingredients at selected sites in Iowa
The objective of this study was to investigate the occurrence of herbicide active and inactive ingredients (primarily volatile organic compounds) at four selected sites in Iowa representing drain tiles, observation wells, or lysimeters. Water samples were collected monthly and bi-monthly before and after herbicide applications in 1991, respectively. They were analyzed for seven...
Authors
W. Wang, M. Liszewski, R. Buchmiller, K. Cherryholmes
Water resources data, Iowa, water year 1994 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...
Authors
J.E. May, D. Sneck-Fahrer, J.G. Gorman, R.D. Goodrich, B.K. Nations, V.E. Miller
Delineation of flooding within the upper Mississippi River Basin, 1993 — Flood of June 29-September 18, 1993, in Iowa City and vicinity, Iowa Delineation of flooding within the upper Mississippi River Basin, 1993 — Flood of June 29-September 18, 1993, in Iowa City and vicinity, Iowa
The hydrologic investigations atlas shows the areas in and around Iowa City, Iowa, that were flooded by the Iowa River in 1993. This map also depicts the Federal Emergency Management Agency (FEMA) 100-year flood boundaries. The drainage basin of the Iowa River at Iowa City received well over 100 percent of normal rainfall in June, July, and August, 1993. At the Cedar Rapids airport...
Authors
Bryan D. Schaap, Craig A. Harvey