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
Geochemistry of active and passive treatment processes used to treat mine drainage
No abstract available.
Authors
Katherine Walton-Day
Tracers in groundwater: Use of microorganisms and microspheres
No abstract available.
Authors
Ronald W. Harvey, Hauke Harms
Geochemical processes controlling transport of arsenic in groundwater: A review of adsorption
Adsorption is the predominate mechanism controlling transport of arsenic in many ground water systems. Hydrous oxides of iron, aluminum, and manganese, and clay minerals are commonly associated with aquifer solids and have been shown to be significant adsorbents of arsenic. The extent of arsenic adsorption is influenced by the chemistry of the aqueous phase including pH, arsenic speciation, and th
Authors
Kenneth G. Stollenwerk
Genetic concepts and uncertainties in restoring fish populations and species
Genetic considerations can be crucially important to the success of reintroductions of lotic species. Current paradigms for conservation and population genetics provide guidance for reducing uncertainties in genetic issues and for increasing the likelihood of achieving restoration. Effective restoration is facilitated through specific goals and objectives developed from the definition that a resto
Authors
R.R. Reisenbichler, F.M. Utter, C.C. Krueger
A critical look at national monitoring programs for birds and other wildlife species
Concerns?about declines in numerous taxa have created agreat deal of interest in survey development. Because birds have traditionally been monitored by a variety of methods, bird surveys form natural models for development of surveys for other taxa. Here I suggest that most bird surveys are not appropriate models for survey design. Most lack important design components associated with estimatio
Authors
J.R. Sauer
A mining impacted stream: Exposure and effects of lead and other trace elements on tree swallows (Tachycineta bicolor) nesting in the Upper Arkansas River Basin, Colorado
No abstract available.
Authors
Christine M. Custer, T. W. Custer, A.S. Archuleta, L.C. Coppock, C.D. Swartz, J. W. Bickham
A review of lake trout (Salvelinus namaycush) restoration in Lake Ontario from an early life history perspective
The authors conclude that small numbers of lake trout spawned successfully each year during 1992-97 in Lake Ontario, although this has yet to result in a trend of increasing natural reproduction. Juxtaposed with the high abundance of mature fish (Selgeby et al., 1995), the situation in Lake Ontario suggests a reduction in reproductive efficiency. This could result from mortality factors that may
Authors
John Fitzsimons, Brian F. Lantry, Robert O'Gorman
A review of the role of contaminants in amphibian declines
For the past decade, there has been growing concern about worldwide declines in amphibian populations,1,2 and a general phenomenon of declining populations was recognized in the mid-1990's. Subsequent research has validated this concern.3,4 These population declines have been defined either as decreases in numbers of individuals in an area or, preferably because of greater reliability, a decrease
Authors
Donald W. Sparling
American shad in the Columbia River
American shad Alosa sapidissima from the Hudson River, New York, were introduced into the Sacramento River, California, in 1871 and were first observed in the Columbia River in 1876. American shad returns to the Columbia River increased greatly between 1960 and 1990, and recently 2-4 million adults have been counted per year at Bonneville Dam, Oregon and Washington State (river kilometer 235). The
Authors
J.H. Petersen, R.A. Hinrichsen, D.M. Gadomski, D.H. Feil, D.W. Rondorf