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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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Myocastor coypus Molina (coypu) Myocastor coypus Molina (coypu)
Myocastor coypus (coypu) (Figure 30.1) is a large semi-aquatic rodent native to South America that is now present in all continents, except Oceania and Antarctica, after widespread introductions in the 1930-1940s. There is a division in English speaking countries as to common name usage. In England and former British colonies (i.e. Kenya) they are called "coypus". In North America and...
Authors
Sandro Bertolino, Laura M Guichon, Jacoby Carter
Elevation uncertainty in coastal inundation hazard assessments Elevation uncertainty in coastal inundation hazard assessments
Coastal inundation has been identified as an important natural hazard that affects densely populated and built-up areas (Subcommittee on Disaster Reduction, 2008). Inundation, or coastal flooding, can result from various physical processes, including storm surges, tsunamis, intense precipitation events, and extreme high tides. Such events cause quickly rising water levels. When rapidly...
Authors
Dean B. Gesch
Incorporating spatial context into the analysis of salmonid habitat relations Incorporating spatial context into the analysis of salmonid habitat relations
In this response to the chapter by Lapointe (this volume), we discuss the question of why it is so difficult to predict salmonid-habitat relations in gravel-bed rivers and streams. We acknowledge that this cannot be an exhaustive treatment of the subject and, thus, identify what we believe are several key issues that demonstrate the necessity of incorporating spatial context into the...
Authors
Christian E. Torgersen, Colden V. Baxter, J. L. Ebersole, Bob Gresswell
Fluid geochemistry of Yucca Mountain and vicinity Fluid geochemistry of Yucca Mountain and vicinity
Yucca Mountain, a site in southwest Nevada, has been proposed for a deep underground radioactive waste repository. An extensive database of geochemical and isotopic characteristics has been established for pore waters and gases from the unsaturated zone, perched water, and saturated zone waters in the Yucca Mountain area. The development of this database has been driven by diverse needs...
Authors
Brian D. Marshall, Richard J. Moscati, Gary L. Patterson
Active transtensional intracontinental basins: Walker Lane in the western Great Basin Active transtensional intracontinental basins: Walker Lane in the western Great Basin
The geometry and dimensions of sedimentary basins within the Walker Lane are a result of Plio-Pleistocene transtensive deformation and partial detachment of the Sierra Nevada crustal block from the North American plate. Distinct morpho-tectonic domains lie within this active transtensive zone. The northeast end of the Walker Lane is partly buried by active volcanism of the southern...
Authors
Angela S. Jayko, Marcus Bursik
Anaerobic oxidation of arsenite by autotrophic bacteria: The view from Mono Lake, California Anaerobic oxidation of arsenite by autotrophic bacteria: The view from Mono Lake, California
Authors
Ronald S. Oremland, John F. Stolz, Chad W. Saltikov
Restoration of freshwater cypress-tupelo wetlands in the southeastern U.S. following severe hurricanes Restoration of freshwater cypress-tupelo wetlands in the southeastern U.S. following severe hurricanes
Freshwater forested wetlands commonly occur in the lower Coastal Plain of the southeastern US with baldcypress (Taxodium distichum [L.] L.C. Rich.) and water tupelo (Nyssa aquatica L.) often being the dominant trees. Extensive anthropogenic activities combined with eustatic sea-level rise and land subsidence have caused widespread hydrological changes in many of these forests. In...
Authors
William H. Conner, Ken W. Krauss, Gary P. Shaffer
Sirenian pathology and mortality assessment: Chapter 17 Sirenian pathology and mortality assessment: Chapter 17
No abstract available.
Authors
Robert K. Bonde, Antonio Mignucci-Giannoni, Gregory D. Bossart
Thermal maturation history of Arctic Alaska and the southern Canada Basin Thermal maturation history of Arctic Alaska and the southern Canada Basin
The emerging global focus on the oil and gas potential of the Arctic underscores the importance of understanding petroleum systems with limited data. Geohistory modeling of Arctic Alaska (including the Chukchi shelf) and the southern Canada basin indicates that regional patterns of thermal maturity and timing of petroleum generation reflect geologic processes associated with rift-opening...
Authors
David W. Houseknecht, W. Matthew Burns, Kenneth J. Bird
Remote sensing of evapotranspiration for operational drought monitoring using principles of water and energy balance Remote sensing of evapotranspiration for operational drought monitoring using principles of water and energy balance
Evapotranspiration (ET) is an important component of the hydrologic budget because it režects the exchange of mass and energy between the soil-water-vegetation system and the atmosphere. Prevailing weather conditions inžuence potential or reference ET through variables such as radiation, temperature, wind, and relativity humidity. In addition to these weather variables, actual ET (ETa)...
Authors
Gabriel B. Senay, Stefanie Bohms, James P. Verdin, Martha C. Anderson, Christopher Hain, Brian D. Wardlow, Agustin Pimstein, John R. Mecikalski, William P. Kustas
Foreword: Contributions of Arctic PRISM to monitoring western hemispheric shorebirds Foreword: Contributions of Arctic PRISM to monitoring western hemispheric shorebirds
Long-term monitoring of populations is of paramount importance to understanding responses of organisms to global environmental change and to evaluating whether conservation practices are yielding intended results through time (Wiens 2009). The population status of many shorebird species, the focus of this volume, remain poorly known. Long-distance migrant shorebirds have proven...
Authors
Susan K. Skagen, Paul A. Smith, Brad A. Andres, Garry Donaldson, Stephen Brown