Skip to main content
U.S. flag

An official website of the United States government

Publications

Read publications and other informational products to learn more about USGS science occurring in the Mississippi Basin.

Filter Total Items: 5584

Population structure, body mass, activity, and orientation of an aquatic snake (Seminatrix pygaea) during a drought Population structure, body mass, activity, and orientation of an aquatic snake (Seminatrix pygaea) during a drought

The snout – vent length, tail length, weight, sex, activity, and orientation of a population of swamp snakes (Seminatrix pygaea) in north – central Florida were recorded from 1985 through 1990. A small temporary pond was monitored for 1343 days, using a drift fence – pitfall trap sampling regime. I captured 123 different snakes, plus 45 recaptures. Juveniles comprised 89% of the snakes...
Authors
C.K. Dodd

Nomenclatural changes and additions Nomenclatural changes and additions

Abstract not supplied at this time
Authors
Eugenia B. Bohlke, W. F. Smith-Vaniz

Toxicity of contaminated sediments in dilution series with control sediments Toxicity of contaminated sediments in dilution series with control sediments

The use of dilutions has been the foundation of our approach for assessing contaminated water, and accordingly, it may be important to establish similar or parallel approaches for sediment dilutions. Test organism responses to dilution gradients can identify the degree of necessary sediment alteration to reduce the toxicity. Using whole sediment dilutions to represent the complex...
Authors
M.K. Nelson, P.F. Landrum, G.A. Burton, S.J. Klaine, E.A. Crecelius, T.D. Byl, Duane C. Gossiaux, V.N. Tsymbal, L. Cleveland, Christopher G. Ingersoll, G. Sasson-Brickson

Toxicity of sediments and pore water from Brunswick Estuary, Georgia Toxicity of sediments and pore water from Brunswick Estuary, Georgia

A chlor-alkali plant in Brunswick, Georgia, USA, discharged >2 kg mercury/d into a tributary of the Turtle River-Brunswick Estuary from 1966 to 1971. Mercury concentrations in sediments collected in 1989 along the tributary near the chlor-alkali plant ranged from 1 to 27 μg/g (dry weight), with the highest concentrations found in surface (0–8 cm) sediments of subtidal zones in the...
Authors
Parley V. Winger, Peter J. Lasier, Harvey Geitner

1993 Annual summary: ENTERGY Lake Dardanelle fish and zebra mussel study 1993 Annual summary: ENTERGY Lake Dardanelle fish and zebra mussel study

Abstract not supplied at this time
Authors
J.N. Stoeckel, C.J. Gagen, D.O. McCollum, R.K. Beadel, J.J. Herod, S.D. Shook

Flood discharges in the upper Mississippi River basin, 1993 Flood discharges in the upper Mississippi River basin, 1993

From mid-June through early August 1993, flooding was severe in the upper Mississippi River Basin following a wet-weather pattern that persisted over the area for at least 6 months before the flood. The magnitude and timing of several intense rainstorms in late June and July, combined with wet antecedent climatic conditions, were the principal causes of the flooding. Flood-peak...
Authors
Charles Parrett, Nick B. Melcher, Robert W. James
Was this page helpful?