Publications
Read publications and other informational products to learn more about USGS science occurring in the Mississippi Basin.
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Determination of pharmaceutical compounds in surface- and ground-water samples by solid-phase extraction and high-performance liquid chromatography-electrospray ionization mass spectrometry Determination of pharmaceutical compounds in surface- and ground-water samples by solid-phase extraction and high-performance liquid chromatography-electrospray ionization mass spectrometry
Commonly used prescription and over-the-counter pharmaceuticals are possibly present in surface- and ground-water samples at ambient concentrations less than 1 μg/L. In this report, the performance characteristics of a combined solid-phase extraction isolation and high-performance liquid chromatography–electrospray ionization mass spectrometry (HPLC–ESI-MS) analytical procedure for...
Authors
J.D. Cahill, E. T. Furlong, M.R. Burkhardt, D. Kolpin, L.G. Anderson
Biochemical, histological and behavioural aspects of visual function during early development of rainbow trout Biochemical, histological and behavioural aspects of visual function during early development of rainbow trout
Retinal structure and concentration of retinoids involved in phototransduction changed during early development of rainbow trout Oncorhynchus mykiss, correlating with improvements in visual function. A test chamber was used to evaluate the presence of optokinetic or optomotor responses and to assess the functionality of the integrated cellular, physiological and biochemical components of...
Authors
Paulo S. M. Carvalho, Douglas B. Noltie, D. E. Tillitt
Water resources data, Iowa, water year 2003--Volume 2. Ground water and quality of precipitation Water resources data, Iowa, water year 2003--Volume 2. Ground water and quality of precipitation
Water resources data for Iowa for the 2003 water year consists of records of ground water levels and water quality of ground-water wells. This report volume contains water-level records for 166 ground-water observation wells; water-quality data for 150 municipal wells; and precipitation-quality data for 2 precipitation sites.
Authors
G.M. Nalley, S. Michael Linhart, G. R. Littin, V.E. Miller
Spatial decision support systems for landscape ecological evaluations in the Southwest Florida Feasibility Study Spatial decision support systems for landscape ecological evaluations in the Southwest Florida Feasibility Study
No abstract available.
Authors
Donald L. DeAngelis, Leonard Pearlstine, Frank J. Mazzotti, Tomma Barnes, Michael Duever, Janet Starnes
Biomonitoring of Environmental Status and Trends (BEST) Program: Environmental contaminants and their effects on fish in the Rio Grande Basin Biomonitoring of Environmental Status and Trends (BEST) Program: Environmental contaminants and their effects on fish in the Rio Grande Basin
We collected, examined, and analyzed 368 fish of seven species from 10 sites in the Rio Grande Basin (RGB) during late 1997 and early 1998. Four sites were National Contaminant Biomonitoring Program (NCBP) stations where organochlorine ad elemental contaminants in fish had been monitored from 1969 and through 1986. The other six were USGS-National Stream Quantity Accounting Network...
Authors
Christopher J. Schmitt, Gail M. Dethloff, Jo Ellen Hinck, Timothy M. Bartish, Vicki Blazer, James J. Coyle, Nancy D. Denslow, Donald E. Tillitt
Accumulation of PCB congeners in nestling tree swallows (Tachycineta bicolor) on the Hudson River, New York Accumulation of PCB congeners in nestling tree swallows (Tachycineta bicolor) on the Hudson River, New York
Tree swallows (Tachycineta bicolor) were used as a sentinel species to monitor the contamination and bioavailability of polychlorinated biphenyls (PCBs) in the Hudson River watershed. Several tree swallow nest box colonies around and downstream from Hudson Falls, NY, were studied. Tree swallow eggs, adults, and 5-, 10-, and 15-day-old nestlings were collected and analyzed for 103 PCB...
Authors
Kathy R. Echols, Donald E. Tillitt, John W. Nichols, Anne L. Secord, John P. McCarty
Population characteristics of Siren lacertina and Amphiuma means in north Florida Population characteristics of Siren lacertina and Amphiuma means in north Florida
Abstract not supplied at this time
Authors
K. Sorensen
Overview and comparison of lipid-containing semipermeable membrane devices and oysters (Crassostrea gigas) for assessing organic chemical exposure Overview and comparison of lipid-containing semipermeable membrane devices and oysters (Crassostrea gigas) for assessing organic chemical exposure
We performed 20-d, flow-through exposures of lipid-containing semipermeable membrane devices (SPMDs) and Pacific oysters (Crassostrea gigas) to three concentrations (nominally 10, 100, and 250 ng/L) of a diverse mixture of polycyclic aromatic hydrocarbons (PAHs). Exposure water was seawater free of particulates larger than 0.1 μm. The results of these controlled laboratory studies...
Authors
J.N. Huckins, H.F. Prest, J. D. Petty, J.A. Lebo, M.M. Hodgins, R.C. Clark, D.A. Alvarez, W.R. Gala, A. Steen, R. Gale, C.G. Ingersoll
Dynamic consequences of allochthonous nutrient input into freshwater systems Dynamic consequences of allochthonous nutrient input into freshwater systems
Abstract not supplied at this time
Authors
D.L. DeAngelis, P. J. Mulholland
The effect of soil composition and hydration on the bioavailability and toxicity of cadmium to hibernating juvenile American toads (Bufo americanus) The effect of soil composition and hydration on the bioavailability and toxicity of cadmium to hibernating juvenile American toads (Bufo americanus)
The soil ecotoxicology literature has focused primarily on a few major taxa, to the neglect of other fossorial organisms such as amphibians. We selected cadmium (Cd) and the American toad (Bufo americanus) as a model contaminant and biological species to assess the impact of soil contamination on amphibian hibernation survival and post-hibernation condition. Soil sand composition (50, 70...
Authors
Stacy M. James, Edward E. Little, Raymond D. Semlitsch
Effects of an insecticide on amphibians in large-scale experimental ponds Effects of an insecticide on amphibians in large-scale experimental ponds
We examined the effects of the insecticide carbaryl on larval amphibian communities in large-scale experimental ponds. Tadpoles of two anurans, Woodhouse's toad (Bufo woodhousii) and southern leopard Frog (Rana sphenocephala), were reared in ponds (800 m3 volume) to determine the effects of tadpole density and carbaryl exposure on mass at metamorphosis and on time and survival to...
Authors
M.D. Boone, R. D. Semlitsch, J.F. Fairchild, B.B. Rothermel