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.
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: 6158
The heart of the Rockies: Montane and subalpine ecosystems The heart of the Rockies: Montane and subalpine ecosystems
No abstract available.
Authors
T.J. Stohlgren, T.T. Veblen, K.C. Kendall, W.L. Baker, Craig D. Allen, J.A. Logan, K.C. Ryan
The midwinter survey of black ducks, locally and regionally The midwinter survey of black ducks, locally and regionally
The Midwinter Waterfowl Inventory (MWI) has been conducted consistently in Maryland since 1955 and in Virginia since 1957. Maryland currently focuses surveys in 30 segments along the Chesapeake Bay, Potomac River, and Atlantic Coast, whereas Virginia focuses on 22 segments centered over the eastern shore of Chesapeake Bay and along the tidewater areas of Back Bay and western shore...
Authors
Dennis G. Jorde, Daniel B. Stotts
The paradigm of grizzly bear restoration in North America The paradigm of grizzly bear restoration in North America
Grizzly bear restoration and recovery is a controversial, highly politicized process. By 1959, when the Craigheads began their pioneering work on Yellowstone grizzly bears, the species had been reduced to a remnant of its historic range. Prior to the colonization of North America by Europeans, the grizzly lived in relatively pristine habitats with aboriginal Native Americans. As...
Authors
C. C. Schwartz
The Story Continues. Closing chapter The Story Continues. Closing chapter
No abstract available at this time
Authors
N.L. Stephenson
The use of models for a multiscaled ecological monitoring system: Chapter 6 The use of models for a multiscaled ecological monitoring system: Chapter 6
No abstract available
Authors
Donald L. DeAngelis, L.J. Gross, E.J. Comiskey, Wolf M. Mooij, M.P. Nott
Thermocouple psychrometry Thermocouple psychrometry
Thermocouple psychrometry is a technique that infers the water potential of the liquid phase of a sample from measurements within the vapor phase that is in equilibrium with the sample. The theoretical relation between water potential of the liquid phase and relative humidity of the vapor phase is given by the Kelvin equation Ψ = energy/volume = (RT/Vw) ln(p/po) [3.2.3–1] where ψ is...
Authors
Brian J. Andraski, Bridget R. Scanlon
Tidal and meteorological influences on shallow marine groundwater flow in the upper Florida Keys Tidal and meteorological influences on shallow marine groundwater flow in the upper Florida Keys
No abstract available.
Authors
Christopher D. Reich, Eugene A. Shinn, Todd D. Hickey, Ann B. Tihansky
Tidal asymmetry and variability of bed shear stress and sediment bed flux at a site in San Francisco Bay, USA Tidal asymmetry and variability of bed shear stress and sediment bed flux at a site in San Francisco Bay, USA
The relationship between sediment bed flux and bed shear stress during a pair of field experiments in a partially stratified estuary is examined in this paper. Time series of flow velocity, vertical density profiles, and suspended sediment concentration were measured continuously throughout the water column and intensely within 1 meter of the bed. These time series were analyzed to...
Authors
Matthew L. Brennan, David H. Schoellhamer, Jon R. Burau, Stephen G. Monismith
Toward better atlases: improving presence-absence information Toward better atlases: improving presence-absence information
No abstract available.
Authors
Douglas H. Johnson, G.A. Sargeant
Toxicological assessment of aquatic ecosystems: application to watercraft contaminants in shallow water environments Toxicological assessment of aquatic ecosystems: application to watercraft contaminants in shallow water environments
Recreational boating and personal watercraft use have the potential to adversely impact shallow water systems through contaminant release and physical disturbance of bottom sediments. These nearshore areas are often already degraded by surface runoff, municipal and industrial effluents, and other anthropogenic activities. For proper management, information is needed on the level of...
Authors
P. V. Winger
Trace elements and nutrition interactions in fish and wildlife Trace elements and nutrition interactions in fish and wildlife
No abstract available.
Authors
S. J. Hamilton, D. J. Hoffman