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Science Quality and Integrity
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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.
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Long-term decline and short-term crash of the once abundant Rusty Blackbird Long-term decline and short-term crash of the once abundant Rusty Blackbird
The Rusty Blackbird (Euphagus carolinus), a formerly common breeding species of boreal wetlands, has exhibited the most marked decline of any North American landbird. North American Breeding Bird Survey (BBS) trends in abundance are estimated to be -12.5% / yr over the last 40 years, which is tantamount to a >95% cumulative decline. Trends in abundance calculated from Christmas Bird...
Authors
R. Greenberg, P. Blancher, D. Niven, Sam Droege
Non-random temporary emigration and the robust design: Conditions for bias at the end of a time series: Section VIII Non-random temporary emigration and the robust design: Conditions for bias at the end of a time series: Section VIII
Deviations from model assumptions in the application of capture–recapture models to real life situations can introduce unknown bias. Understanding the type and magnitude of bias under these conditions is important to interpreting model results. In a robust design analysis of long-term photo-documented sighting histories of the endangered Florida manatee, I found high survival rates, high...
Authors
Catherine A. Langtimm
North American Bird Banding and quantitative population ecology North American Bird Banding and quantitative population ecology
Early bird-banding programs in North America were developed to provide descriptions of bird migration and movement patterns. This initial interest in description quickly evolved into more quantitative interests in two ways. There was (1) interest in quantifying migration and movement patterns, and (2) rapid recognition that re-observations of marked birds provided information about other
Authors
J.D. Nichols, J. Tautin
Preface Preface
The idea for Landslides and Engineering Geology of the Seattle, Washington, Areagrew out of a major landslide disaster that occurred in the Puget Sound region at the beginning of 1997. Unusually heavy snowfall in late December 1996 followed by warm, intense rainfall on 31 December through 2 January 1997 produced hundreds of damaging landslides in communities surrounding Puget Sound. This...
Authors
Rex L. Baum, Jonathan W. Godt, Lynn M. Highland
Riparian plant community structure in a managed hydrological regime Riparian plant community structure in a managed hydrological regime
The hydrology of the Snake River in Grand Teton National Park is partly determined by releases from Jackson Lake Dam. The dam was first built in 1908 and became part of the National Park system when GTNP was expanded to include most of Jackson Hole. Completion of the present structure of Jackson Lake Dam occurred in 1917 and resulted in an increase above the natural level of Jackson Lake...
Authors
Sabine Mellman-Brown, Dave Roberts, Bruce H. Pugesek
Rivers and streams: Ecosystem dynamics and integrating paradigms Rivers and streams: Ecosystem dynamics and integrating paradigms
Full understanding of running waters requires an ecosystem perspective, which encompasses the physical and chemical setting in interaction with dependent biological communities. Several conceptual models or paradigms of river and stream ecosystems that capture critical components of lotic ecosystems have been developed, including the ‘river continuum concept’, to describe fluxes of...
Authors
K.W. Cummins, M.A. Wilzbach
Roles and contributions of banding organizations to the North American Banding Program Roles and contributions of banding organizations to the North American Banding Program
No abstract available.
Authors
S.R. Morris, B. Dale, M. Gustafson
Sediment transport measurements Sediment transport measurements
Sediment erosion, transport, and deposition in fluvial systems are complex processes that are treated in detail in other sections of this book. Development of methods suitable for the collection of data that contribute to understanding these processes is a still-evolving science. Sediment and ancillary data are fundamental requirements for the proper management of river systems...
Authors
P. Diplas, R. Kuhnle, J. Gray, D. Glysson, T. Edwards
State of the art in design, modelling and software for tagging studies State of the art in design, modelling and software for tagging studies
No abstract available.
Authors
W. L. Kendall
Temperate freshwater wetlands: Response to gradients in moisture regime, human alterations and economic status Temperate freshwater wetlands: Response to gradients in moisture regime, human alterations and economic status
No abstract available
Authors
Mark M. Brinson, Barbara E. Bedford, Beth Middleton, Jos T. A. Verhoeven