Book Chapters
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 more than 5,500 book chapters authored by our scientists over the past 100+ year history of the USGS and refine search by topic, location, year, and advanced search.
Filter Total Items: 6158
Applications of stable isotopes for regional to national-scale water quality and environmental monitoring programs Applications of stable isotopes for regional to national-scale water quality and environmental monitoring programs
Isotopes are a potentially powerful component of monitoring and assessment programs aimed at quantifying and mitigating alterations to environments from human activities. In particular, isotopic techniques have proved useful for tracing sources and sinks of various pollutants in large river basins, wetlands, and airsheds. Many of these studies have been conducted at the regional to...
Authors
Carol Kendall, Megan B. Young, Steven R. Silva
Stress, fracture, and fluid-flow analysis using acoustic and electrical image logs in hot fractured granites of the Coso geothermal field, California, U.S.A. Stress, fracture, and fluid-flow analysis using acoustic and electrical image logs in hot fractured granites of the Coso geothermal field, California, U.S.A.
Acoustic and electrical image logs in fractured granitic rocks penetrated by U.S. Navy well 58A-10, Coso Wash, in the eastern margin of the Coso geothermal field, California, were compared to evaluate their relative ability to characterize fractures and fault rock textures and to measure stress orientations from borehole failure. Electrical image logs are sensitive to variations in...
Authors
Nicholas C. Davatzes, Stephen H. Hickman
Potential effects of coal bed natural gas development on fish and aquatic resources Potential effects of coal bed natural gas development on fish and aquatic resources
The purpose of this chapter is to provide a summary of issues and findings related to the potential effects of coalbed natural gas (CBNG) development on fish and other aquatic resources. We reviewed CBNG issues from across the United States and used the Powder River Basin of Wyoming as a case study to exemplify some pertinent issues. The quality of water produced during CBNG extraction...
Authors
Aida M. Farag, D.D. Harper, W.A. Hubert, A.E. Hubert
What you need to know about selenium What you need to know about selenium
No abstract available.
Authors
T. Young, K. Finley, William J. Adams, John M. Besser, W. A. Hopkins, D.B. Jolley, J. Martin-McNaughton, Theresa S. Presser, D.P. Shaw, J. M. Unrine
Brucellosis in cattle, bison, and elk: Management conflicts in a society with diverse values Brucellosis in cattle, bison, and elk: Management conflicts in a society with diverse values
No abstract available.
Authors
P.C. Cross, Michael R. Ebinger, V. Patrek, Rick Wallen
Fish guidance and passage at barriers Fish guidance and passage at barriers
Habitat fragmentation resulting from human activities is a major factor contributing to reductions in biodiversity and species abundance worldwide. When movements are restricted, subpopulations become isolated, leading to reduced breeding opportunities, inbreeding depression, and interruption of key life stages. This problem is particularly ubiquitous in riverine ecosystems, where dams...
Authors
Theodore R. Castro-Santos, Alexander Haro
The biostratigraphic importance of conchostracans in the continental Triassic of the northern hemisphere The biostratigraphic importance of conchostracans in the continental Triassic of the northern hemisphere
Conchostracans or clam shrimp (order Conchostraca Sars) are arthropods with a carapace consisting of two chitinous lateral valves. Triassic conchostracans range in size from 2 to 12.5 mm long and are common in deposits that formed in fresh water lakes, isolated ponds and brackish areas. Their dessication- and freeze-resistant eggs can be dispersed by wind over long distances. Therefore...
Authors
H. W. Kozur, Robert E. Weems
Biodegration of chlorinated ethenes Biodegration of chlorinated ethenes
Biodegradation of chlorinated ethenes by naturally occurring or artificially enhanced processes is an important component of current site remediation strategies. At this writing, several microbial mechanisms for chlorinated ethene transformation and degradation have been identified. The purpose of this chapter is to briefly summarize the current understanding of those processes that lead...
Authors
Paul M. Bradley, Francis H. Chapelle
Environmental Impacts of Roads Environmental Impacts of Roads
No abstract available.
Authors
Alisa W. Coffin
Ospreys of the gulf of California: Ecology and conservation status Ospreys of the gulf of California: Ecology and conservation status
No abstract available.
Authors
Jean-Luc E. Cartron, Daniel W. Anderson, Charles J. Henny, Roberto Carmona