Conference Papers
Science Quality and Integrity
The USGS provides unbiased, objective, and impartial scientific information upon which our audiences, including resource managers, planners, and other entities, rely.
The USGS provides unbiased, objective, and impartial scientific information upon which our audiences, including resource managers, planners, and other entities, rely.
Browse almost 5,000 conference papers authored by our scientists and refine search by topic, location, year, and advanced search.
Filter Total Items: 5346
Infectious and parasitic diseases of the gray wolf and their potential effects on wolf populations in North America
Numerous infections and parasitic diseases have been reported for the gray wolf, including more than 10 viral, bacterial, and mycotic disease and more than 70 species of helminths and ectoparasites. However, few studies have documented the role of diseases in population dynamics. Disease can affect wolf populations directly by causing mortality or indirectly by affecting physiological and homeosta
Authors
C. J. Brand, M.J. Pybus, W.B. Ballard, R. O. Peterson
A review of the sensory organs in wolves and their importance to life history
No abstract available.
Authors
C.S. Asa, L. David Mech
Acid Rain
Although acid rain is fading as a political issue in the United States and funds for research in this area have largely disappeared, the acidity of rain in the Eastern United States has not changed significantly over the last decade, and it continues to be a serious environmental problem. Acid deposition (commonly called acid rain) is a term applied to all forms of atmospheric deposition of acidic
Authors
Owen P. Bricker, Karen C. Rice
Adult production of fall Chinook salmon reared in net-pens in backwaters of the Columbia River
No abstract available
Authors
J.W. Beeman, J.F. Novotny
Advanced instrumentation for the collection, retrieval, and processing of urban stormwater data
The U.S. Geological Survey, in cooperation with the City of Charlotte and Mecklenburg County, North Carolina, has developed a data-collection network that uses advanced instrumentation to automatically collect, retrieve, and process urban stormwater data. Precipitation measurement and water-quality networks provide data for (1) planned watershed simulation models, (2) early warning of possible flo
Authors
Jerald B. Robinson, Jerad D. Bales, Wendi S. Young
Analysis of long-term sulfate and nitrate budgets in a Rocky Mountain basin
No abstract available.
Authors
Jill Baron, E.J. Allstott, B. K. Newkirk
Applications of isotopes to tracing sources of solutes and water in shallow systems
New awareness of the potential danger to water supplies posed by the use of agricultural chemicals has focused attention on the nature of groundwater recharge and the mobility of various solutes, especially nitrate and pesticides, in shallow systems. A better understanding of hydrologic flowpaths and solute sources is required to determine the potential impact of sources of contamination on water
Authors
Carol Kendall, David P. Krabbenhoft
Areal extent of freshwater from an experimental release of Mississippi River Water into Lake Pontchartrain, Louisiana, May 1994
The effects of the release of freshwater from the Mississippi river into the Lake Pontchartrain was evaluated. The study determined the delineation of the areal extent of the freshwater plume in the lake, intensively sampled lake and river water and bed sediment to determine the effects on water quality in the lake, and performed a dye study to determine the mixing characteristics of the lake. Wat
Authors
Brian E. McCallum
Assessment of information on ground-water/surface-water interactions in the northern midcontinent
Ground-water/surface-water interactions are important to the hydrology of shallow aquifers, streams, lakes, and wetlands. Information on ground-water/surface-water interactions in the northern midcontinent was assessed. The ground-water/surface-water interactions in physiographic and climatic areas that contain many wetlands differed from the interactions in areas that consisted predominantly of a
Authors
Michael L. Strobel
Band recoveries of diurnal raptors banded in the Marin Headlands, Marin County, California
No abstract available at this time
Authors
K.L. Scheuerman, M.A. Weeks, J. A. Howell
Biotic and abiotic processes controlling water chemistry during snowmelt at rabbit ears pass, Rocky Mountains, Colorado, U.S.A.
The chemical composition of snowmelt, groundwater, and streamwater was monitored during the spring of 1991 and 1992 in a 200-ha subalpine catchment on the western flank of the Rocky Mountains near Steamboat Springs, Colorado. Most of the snowmelt occurred during a one-month period annually that began in mid-May 1991 and mid-April 1992. The average water quality characteristics of individual sampli
Authors
N.E. Peters, G.H. Leavesley
Can we manage for biological diversity in the absence of science?
Conservation of biological diversity is dependent on sound scientific information about underlying ecological processes. Current knowledge of the composition, distribution, abundance and life cycles of most species of plants and animals is incomplete, insufficient, unreliable, or nonexistent. Contemporary managers are also confronted with additional levels of complexity related to varying degree
Authors
D.L. Trauger, R.J. Hall