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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: 6181
An introduction to standardized sampling An introduction to standardized sampling
In 2009, the first edition of Standard Methods for Sampling North American Freshwater Fishes was published. This was the first time in the history of fisheries science that standardization of methods and equipment had taken place on such a large geographic scale. Since its publication, the methods have been used extensively across North America by local, state, and federal agencies...
Authors
Scott A. Bonar, Joseph D. Conroy, Salvador Contreras-Balderas, Alison C. Iles
Statistical analysis Statistical analysis
Effective monitoring of populations is critical for assessing the efficacy of conservation and management activities, determining the conservation status of a species, and examining trends over time. However, far too often, monitoring efforts fall short of adequately describing the population. Poorly defined problems and objectives, a lack of standard operating procedures, a poor...
Authors
David R Stewart, Kristin M Broms, Ken G Gerow, Micheal A Allen, Michael C. Quist
Standard data management practices Standard data management practices
Accomplishing data management in a standardized and practical way begins with an understanding of what data management is. The Data Management Association defines data management as “the development, execution, and supervision of plans, policies, programs, and practices that deliver, control, protect, and enhance the value of data and information assets throughout their lifecycles”...
Authors
Rebecca Krogman, Jennifer M. Bayer, Arthur Cooper, Jeff Kopaska, Nancy J. Leonard, Jeremy Pritt, Colleen Roe, Erin Tracy, Paul A. Venturelli, Daniel J. Wieferich, Dana M. Infante
Standardizing electrofishing power Standardizing electrofishing power
No abstract available.
Authors
Leandro E. Miranda, J.B. Reynolds, J.C. Dean, C.R. Dolan, J.D. Buckwalter
Warmwater fish in small standing waters Warmwater fish in small standing waters
No abstract available.
Authors
M.K. Flammang, D.E. Shoup, P.H. Michaletz, Kevin L. Pope
Warmwater fish in large standing waters Warmwater fish in large standing waters
No abstract available.
Authors
Leandro E. Miranda, K.I. Bonvechio, J. Koch, R. Moncayo-Estrada
Indices for common North American fishes Indices for common North American fishes
One of the greatest advantages to the standardization of fisheries sampling methods is the comparable data they produce (Bonar et al. 2017). Following American Fisheries Society (AFS) standardized sampling methods, fisheries professionals can more easily compare their data with standardized data collected across North America to address both small- and large-scale fisheries questions...
Authors
Erin E. Tracy, Mark J. Brouder, Alison C. Iles, Chad N. Teal, Scott A. Bonar
Warmwater fish in wadeable streams Warmwater fish in wadeable streams
No abstract available.
Authors
Norman Mercado-Silva, John Lyons, Stephan J. Magnelia, James T. Peterson, Allison H. Roy
Warmwater fish in rivers Warmwater fish in rivers
In addition to the gears described in the previous version, this edition includes an updated water body definition that is inclusive of Mexico and Canada as well as standard methods for the use of cast nets in warmwater rivers. There were organizational changes in the trawling and hoop-net sections to make them consistent with the format for this edition, but the methods themselves have...
Authors
Brenda M. Pracheil, Patrick Braaten, Everardo Barba Macias, Christopher S. Guy, David P Herzog, Martin J. Hamel, John C Justice, Alison R Loeppky, Jon M Mollish, Jeffrey W Simmons, Sara J. Tripp
Heart of the West: Wyoming’s commitment to conservation of migratory ungulates Heart of the West: Wyoming’s commitment to conservation of migratory ungulates
The small town of Superior, Wyoming, used to be a booming coal town. Pictures from the 1920s reveal sparkling new cars, a bowling alley, and other amenities supported by the wealth of the coal mines. Today, those prosperous days are nowhere to be seen. Superior doesn’t have a grocery store or a gas station, and the local bar is only open occasionally. Aside from the low-slung, modest...
Authors
Emily Reed, Matthew J. Kauffman
Overcoming low detectability in snake conservation research: Case studies from the Southeast USA Overcoming low detectability in snake conservation research: Case studies from the Southeast USA
Goals of conservation research include detecting and monitoring changes in abundance, understanding species interactions, detecting extinction events of imperiled species, and detecting colonization events and spread of non-native species. Achieving these goals is difficult or impossible when the target species is rarely encountered or when the number of individuals detected is unrelated...
Authors
John D. Willson, Jacquelyn C. Guzy, Andrew M. Durso