Publications
Read publications and other informational products to learn more about USGS science occurring in the Mississippi Basin.
Filter Total Items: 5584
Natural resource problem solving: An interdisciplinary approach in coastal Louisiana Natural resource problem solving: An interdisciplinary approach in coastal Louisiana
No abstract available.
Authors
A. Lee Foote, Virginia R. Burkett, S. Jeffress Williams
Sensitivity of early-life stage golden trout to low pH and elevated aluminum Sensitivity of early-life stage golden trout to low pH and elevated aluminum
Early-life-stage golden trout (Oncorhynchus aguabonita aguabonita) were exposed to acid and Al to examine the response and determine the sensitivity of a western, alpine salmonid to conditions simulating an episodic pH depression. Freshly fertilized eggs, alevins, and swim-up larvae were exposed for 7 d to one of 12 combinations of pH and Al, and surviving fish were held to 40 d post...
Authors
Aaron J. DeLonay, Edward E. Little, Daniel F. Woodward, William G. Brumbaugh, Aida M. Farag, Charles F. Rabeni
Laguna madre: Seagrass changes continue decades after salinity reduction Laguna madre: Seagrass changes continue decades after salinity reduction
Vegetation maps of the lower Laguna Madre prepared from surveys conducted in 1965–1967, 1974–1976, and 1988 document a >330 km2 decrease in cover byHalodule wrightii, an increase of almost 190 km2 in other seagrass species, and an increase of 140 km2 in bare bottom. Loss in seagrass cover is confined to deeper parts of the laguna; turbidity caused by maintenance dredging is the suspected...
Authors
Millicent L. Quammen, Christopher P. Onuf
Flood hydrology and geomorphic effects on river channels and flood plains: The flood of November 4-5, 1985, in the South Branch Potomac River Basin of West Virginia Flood hydrology and geomorphic effects on river channels and flood plains: The flood of November 4-5, 1985, in the South Branch Potomac River Basin of West Virginia
The November 1985 flood was the largest recorded in the South Branch Potomac River basin. Discharges exceeded values estimated for a recurrence interval of 500 yr at four of six stations in the basin. Flow velocities in the channel were as high as 4.6 m/s and may have exceeded 6 m/s at some locations; estimated values of unit stream power at U.S. Geological Survey gage locations were as...
Authors
Andrew J. Miller, Douglas J. Parkinson
Depositional aspects of the November 1985 Flood on Cheat River and Black Fork, West Virginia Depositional aspects of the November 1985 Flood on Cheat River and Black Fork, West Virginia
Widespread, intense rainfall in November 1985 produced floods that exceeded all historic events on Cheat River and most of its tributaries. Official discharge estimates for Cheat River ranged from 4,800 to 5,380 m3 /s (170,000-190,000 ft3/s) with a recurrence interval of >100 yr. In addition to considerable property damage and the loss of five lives, the November 1985 flood left a...
Authors
J. S. Kite, R. C. Linton
Introduction: Geomorphic studies of the storm and flood of November 3-5, 1985, in the upper Potomac and Cheat River basins Introduction: Geomorphic studies of the storm and flood of November 3-5, 1985, in the upper Potomac and Cheat River basins
The heavy rains of November 3-5, 1985, produced record floods and extensive landsliding in the Potomac and Cheat River basins in West Virginia and Virginia (pl. 1). Although rainfall intensity was moderate, the storm covered a very large area and produced record floods for basins in the size range of 1000-10,000 km2. In addition, thousands of landslides were triggered on slopes underlain...
Authors
Robert B. Jacobson
Landslides triggered by the storm of November 3-5, 1985, Wills Mountain Anticline, West Virginia and Virginia Landslides triggered by the storm of November 3-5, 1985, Wills Mountain Anticline, West Virginia and Virginia
More than 3,000 landslides were triggered by heavy rainfall in the central Appalachian Mountains of West Virginia and Virginia, November 3-5, 1985. These landslides provided the opportunity to study spatial controls on landslides, magnitude and frequency of triggering events, and the effects of landslides on flood-induced geomorphic change. The study area consists of parts of the Wills...
Authors
Robert B. Jacobson, John P. McGeehin, Elizabeth D. Cron, Carolyn E. Carr, John M. Harper, Alan D. Howard
Use of a mark-visual recapture technique to estimate the relative abundance of nutria Use of a mark-visual recapture technique to estimate the relative abundance of nutria
No abstract available.
Authors
Lori A. Johnson
Plant decomposition rates in two Louisiana coastal marshes Plant decomposition rates in two Louisiana coastal marshes
No abstract available.
Authors
Kathleen A. Reynolds, A. Lee Foote, Glenn R. Guntenspergen
Groundwater as a nonpoint source of atrazine and deethylatrazine in a river during base flow conditions Groundwater as a nonpoint source of atrazine and deethylatrazine in a river during base flow conditions
Alluvial groundwater adjacent to the main stem river is the principal nonpoint source of atrazine and deethylatrazine in the Cedar River of Iowa after the river has been in base flow conditions for 5 days. Between two sites along a 116-km reach of the Cedar River, tributaries contributed about 25% of the increase in the atrazine and deethylatrazine load, whereas groundwater from the...
Authors
Paul J. Squillace, E.M. Thurman, Edward T. Furlong
Dioxin-like toxic potency in Forster's tern eggs from Green Bay, Lake Michigan, North America Dioxin-like toxic potency in Forster's tern eggs from Green Bay, Lake Michigan, North America
The endangered Forster's tern (Sternaforsteri) population on Green Bay, Wisconsin has exhibited symptoms of embryotoxicity, congenital deformities, and poor hatching success. The putative causal agents are planar halogenated hydrocarbons (PHH). The objectives of this study were: 1) to evaluate the toxic potency of PHHs in extracts of Forster's tern eggs taken from Green Bay, Lake...
Authors
D. E. Tillitt, T.J. Kubiak, G.T. Ankley, J. P. Giesy
Body composition of wintering canvasbacks in Louisiana: Dominance and survival implications Body composition of wintering canvasbacks in Louisiana: Dominance and survival implications
I studied effects of sex, age, and month on body mass and composition of Canvasbacks (Aythya valisineria) at Catahoula Lake (CL) and the Mississippi River Delta (MRD), Louisiana, in winter 1987-1988. Size-adjusted body mass and fat varied by age, month, and site. Fat levels in immatures were greater at MRD than at CL, but changed similarly at both sites. Adults at MRD were also fatter...
Authors
William L. Hohman