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: 6063
Guidelines for proper care and use of wildlife in field research
No abstract available.
Authors
Milton Friend, D. E. Toweill, Robert L. Brownell, V. F. Nettles, Donald Davis, William J. Foreyt
National standards and guidelines for pesticides in water, sediment, and aquatic organisms
The effects of pesticides1 on water quality commonly are assessed by comparing measured concentrations of individual pesticide compounds in the environment with concentrations that have been determined to have potential adverse effects on humans, aquatic organisms, or other beneficial uses of water. Direct evaluation of the adverse effects of every pesticide present in a given hydrologic system is
Authors
L.H. Nowell, E.A. Resek
Straight-line drift fences and pitfall traps
Straight-line drift fences typically are short barriers (5-15 m) that direct animals traveling on the substrate surface into traps places at the ends of or beside the barriers. Traps (described below) can be pitfalls, funnel traps, or a combination of the two.
Drift fences with pitfall or funnel traps and pitfall traps without fences are used commonly to inventory and monitor populations of amph
Authors
Paul Stephen Corn
Ecological perspective: Linking ecology, GIS, and remote sensing to ecosystem management
Awareness of significant human impacts on the ecology of Earth's landscapes is not new (Thomas 1956). Over the past decade (Forman and Godron 1986, Urban et a1. 1987) applications of geographic information systems (GIS) and remote sensing technologies have supported a rapid rise in landscape.stale research. The heightened recognition within the research community of the ecological linkages between
Authors
Craig D. Allen
Field and modeling studies of multiphase fluid flow at the Bemidji, Minnesota crude-oil spill site
No abstract available.
Authors
Hedeff I. Essaid, William N. Herkelrath, L.A. Dillard
Organochlorine and heavy metal contaminants in baleen whales: a review and evaluation of conservation implications
No abstract available.
Authors
Thomas J. O'Shea, R. L. Brownell
Preliminary results of the U.S. Geological Survey-Iowa Department of Natural Resources Geological Survey Bureau Manson Core Drilling Project
The U.S. Geological Survey and Iowa Department of Natural Resources Geological Survey Bureau completed, in 1992, a two-year core drilling program in the Manson Impact Structure, a 35-km-diameter, Cretaceous-Tertiary boundary-age feature located in north-central Iowa. A total of 12 cores sampled in excess of 1,200 m (4,000 ft) of crater rocks, supplementing the two previously drilled shallow cores
Authors
Raymond R. Anderson, Jack B. Hartung, Brian J. Witzke, Eugene Merle Shoemaker, David J. Roddy
Correlation and age of the Upper Jurassic Morrison Formation from magnetostratigraphic analysis
The magnetostratigraphy of the Morrison Formation of east-central New Mexico resembles that of three western Colorado sections. Magnetic polarity and lithology agree among the sections, indicating the correlation potential of magnetostratigraphy in this lithologically complex formation. Both magnetostratigraphy, lithology, and paleopoles divide the formation into two parts. The lower sandstone-dom
Authors
Maureen B. Steiner, S. G. Lucas, Eugene Merle Shoemaker
Mantle helium in the groundwater of the Mirror Lake Basin, New Hampshire, USA, 1994
Helium isotope analyses of ground waters from the Mirror Lake drainage basin in central New Hampshire (USA) show helium in excess of air-saturated water by up to 200x. The freon ages of these waters are younger than 50 years, consistent with the local hydrology. This excess helium has an isotope ratio of ^3He/^4He = 1.65 ± 0.10 x 10^(-6). It is shown that this component cannot be the result of cos
Authors
T. Torgersen, S. Drenkard, K. Farley, P. Schlosser, Allen M. Shapiro
Distribution and occurrence of organic acids in subsurface waters
No abstract available.
Authors
P.D. Lundegard, Yousif K. Kharaka