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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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Chapter 11: Management considerations Chapter 11: Management considerations
We conducted an ecoregional assessment of sagebrush (Artemisia spp.) ecosystems in the Wyoming Basins and surrounding regions (WBEA) to determine broad-scale species-environmental relationships. Our goal was to assess the potential influence from threats to the sagebrush ecosystem on associated wildlife through the use of spatially explicit occurrence and abundance models. These models...
Authors
Steven T. Knick, Steven E. Hanser, Matthias Leu, Cameron L. Aldridge, Scott E. Nielsen, Mary M. Rowland, Sean P. Finn, Michael J. Wisdom
Integrating field observations and inverse and forward modeling: application at a site with acidic, heavy-metal-contaminated groundwater Integrating field observations and inverse and forward modeling: application at a site with acidic, heavy-metal-contaminated groundwater
No abstract available.
Authors
Pierre D. Glynn, James G. Brown
Effects of climate change on nutrition and genetics of White-tailed Ptarmigan Effects of climate change on nutrition and genetics of White-tailed Ptarmigan
White-tailed Ptarmigan (Lagopus leucura) are well suited as a focal species for the study of climate change because they are adapted to cool, alpine environments that are expected to undergo unusually rapid climate change. We compared samples collected in the late 1930s, the late 1960s, and the late 2000s using molecular genetic and stable isotope methods in an effort to determine...
Authors
Sara J. Oyler-McCance, Craig A. Stricker, Judy St. John, Clait E. Braun, Gregory T. Wann, Cameron L. Aldridge
Scientific ocean drilling and gas hydrates studies Scientific ocean drilling and gas hydrates studies
No abstract available.
Authors
Carolyn D. Ruppel
Burmese Pythons and other giant constrictors Burmese Pythons and other giant constrictors
No abstract available.
Authors
Robert N. Reed, Gordon H. Rodda
Analytical characterization of selective benthic flux components in estuarine and coastal waters Analytical characterization of selective benthic flux components in estuarine and coastal waters
Benthic flux is the rate of flow across the bed of a water body, per unit area of bed. It is forced by component mechanisms, which interact. For example, pressure gradients across the bed, forced by tide, surface gravity waves, density gradients, bed–current interaction, turbulence, and terrestrial hydraulic gradients, drive an advective benthic flux of water and constituents between...
Authors
Jeffrey N. King
Stream-groundwater interactions Stream-groundwater interactions
Streams and their surrounding catchments exchange water and solutes on a range of physical scales. Exchange with the stream may extend into the interstitial areas of the streambed, the hyporheic zone, the riparian area, or the catchment's groundwater flow system. Even at the smaller scales, the exchanges significantly influence solute transport, nutrient cycling, and the aquatic...
Authors
Kenneth E. Bencala
Environmental influences on the occurrences of sepiolite and palygorskite: a brief review Environmental influences on the occurrences of sepiolite and palygorskite: a brief review
Sepiolite is a hydrous magnesium silicate formed by precipitation of near-surface brackish or saline waters, under semi-arid climatic conditions. Four major influences on the distribution of sepiolite are source materials, climate, physical parameters and associated phase relations. Two major pathways governing the occurrence of sepiolite and palygorskite are direct precipitation from...
Authors
Blair F. Jones, Kathryn M. Conko
Input, calibration, uncertainty, and limitations of the basin characterization model: appendix three Input, calibration, uncertainty, and limitations of the basin characterization model: appendix three
No abstract available.
Authors
Alan L. Flint, Lorraine E. Flint, Melissa D. Masbruch
Nanoparticles formed from bacterial oxyanion reduction of toxic Group 15 and 16 metalloids Nanoparticles formed from bacterial oxyanion reduction of toxic Group 15 and 16 metalloids
This chapter presents some examples of nanoparticles formed by only a few microbial species that are cultivated in only a handful of laboratories worldwide. The investigations so far have just scratched the surface of the potential of the natural world to yield bionanomineral producers. While future research should involve screening surveys of the prokaryotes for this biomineralizing...
Authors
C.I. Pearce, S. Baseman, J.W. Fellowes, Ronald S. Oremland
Hydrology and biogeochemistry linkages Hydrology and biogeochemistry linkages
This chapter provides an overview of the linkages between hydrology and biogeochemistry in terrestrial and aquatic systems. Selected topics include hydrological pathways on drainage basin slopes, mountain environments, within-river (or in-stream) processes, wetlands, groundwater (and groundwater–surface water interactions), and lakes. Beginning from catchment headwaters, This chapter...
Authors
Norman E. Peters, J. K. Bohlke, P. D. Brooks, T.P. Burt, Michael N. Gooseff, David P. Hamilton, P. J. Mulholland, Nigel Roulet, J.V. Turner