Book Chapters
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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
Sand grain sources at coral reefs indicate reef health
No abstract available.
Authors
Barbara H. Lidz
Seasonal movements among river reaches, migration strategies, and population structure of the divided Connecticut River shortnose sturgeon population: the effects of Holyoke Dam
Even after 155 years, each population segment seasonally migrates toward the other attempting to maintain the natural connection. Migration timing and style of pre-spawning and post-spawning males and females is discussed, as is homing. The impact of Holyoke Dam on population size and growth is characterized and turbine mortality of adult sturgeon passing through a Kaplan turbine at the dam is est
Authors
Boyd Kynard, Micah Kieffer, Phil Vinogradov
Sequential development of platform to off-platform facies of the great American carbonate bank in the central Appalachians
In the central Appalachians, carbonate deposition of the great American carbonate bank began during the Early Cambrian with the creation of initial ramp facies of the Vintage Formation and lower members of the Tomstown Formation. Vertical stacking of bioturbated subtidal ramp deposits (Bolivar Heights Member) and dolomitized microbial boundtsone (Fort Duncan Member) preceded the initiation of plat
Authors
David K. Brezinski, John F. Taylor, John E. Repetski
Shorebird surveys in western Alaska
Surveys for breeding shorebirds were conducted during 2001-2002 in four National Wildlife Refuges (NWRs) in western Alaska - Alaska Maritime, Alaska Peninsula, Yukon Delta and Selawik. The sizes of our study areas on and adjacent to these four refuges were 9,243 km2, 24,493 km2, 853 km2, and 15,170 km2, respectively. Eleven sites were selected non-randomly, 3 in the Alaska Maritime NWR, 6 in the A
Authors
Brian J. McCaffery, Jonathan Bart, Catherine Wightman, David J. Krueper
Simulating future uncertainty to guide the selection of survey designs for long-term monitoring
A goal of environmental monitoring is to provide sound information on the status and trends of natural resources (Messer et al. 1991, Theobald et al. 2007, Fancy et al. 2009). When monitoring observations are acquired by measuring a subset of the population of interest, probability sampling as part of a well-constructed survey design provides the most reliable and legally defensible approach to ac
Authors
Steven L. Garman, E. William Schweiger, Daniel J. Manier
Sirenian pathology and mortality assessment
No abstract available.
Authors
Robert K. Bonde, Antonio A. Mignucci-Ginannoni, Gregory D. Bossart
Small-scale and reconnaissance surveys
This brief chapter addresses two related issues: how effort should be allocated to different parts of the sampling plan and, given optimal allocation, how large a sample will be required to achieve the PRISM accuracy target. Simulations based on data collected to date showed that 2 plots per cluster on rapid surveys, 2 intensive camps per field crew-year, 2-4 intensive plots per intensive camp, an
Authors
Jonathan Bart, Brad A. Andres, Kyle Elliott, Charles M. Francis, Victoria Johnston, R. I. G. Morrison, Elin P. Pierce, Jennie Rausch
Sorta situ, the new reality of management conditions for wildlife populations in the absence of "wild" spaces
No abstract available.
Authors
Evan S. Blumer, Barbara A. Wolfe, Roberto F. Aguilar, A. Alonso Aguirre, Glenn H. Olsen
Strategies for wildlife disease surveillance
No abstract available.
Authors
Jonathan M. Sleeman, Christopher J. Brand, Scott D. Wright
Stratigraphic architecture of bedrock reference section, Victoria Crater, Meridiani Planum, Mars
The Mars Exploration Rover Opportunity has investigated bedrock outcrops exposed in several craters at Meridiani Planum, Mars, in an effort to better understand the role of surface processes in its geologic history. Opportunity has recently completed its observations of Victoria crater, which is 750 m in diameter and exposes cliffs up to ~15 m high. The plains surrounding Victoria crater are ~10
Authors
Lauren A. Edgar, John P. Grotzinger, Alex G. Hayes, David M. Rubin, Steve W. Squyres, James F. Bell, Kenneth E. Herkenhoff
Structural equation modeling and the analysis of long-term monitoring data
No abstract available.
Authors
James B. Grace, Jon E. Keeley, Darren J. Johnson, Kenneth A. Bollen
Summary
This chapter summarizes results in previous chapters by providing estimated densities and population sizes, in the areas we have surveyed, for Alaska, Canada, and both regions combined. A total of 1,554 rapid plots, covering 232 km2, and 83 intensive plots were surveyed during the study. The monograph presents >600 density estimates and >200 estimated population sizes. Densities for all shorebirds
Authors
Jonathan Bart, Paul A. Smith