Book Chapters
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.
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Select airborne techniques for mapping and problem solving: Chapter 30
No abstract available.
Authors
Andrea Donnellan, Ramon Arrowsmith, Victoria E. Langenheim
Soil phosphorus cycling in tropical soils: An ultisol and oxisol perspective
Phosphorus (P) is essential for life. It is the backbone of our DNA, provides energy for biological reactions, and is an integral component of cell membranes. As such, it is no surprise that P availability plays a strong role in regulating ecosystem structure and function (Wassen et al. 2005, Elser et al. 2007, Condit et al. 2013), and in determining our capacity to grow food for a burgeoning huma
Authors
Sasha C. Reed, Tana E Wood
South Park, Colorado: The interplay of tectonics and sedimentation creates one of Colorado’s crown jewels
Recent mapping efforts and hydrocarbon exploration in the South Park Basin
have brought to light the magnitude in complexity of a structural basin already
recognized for its unique sedimentary and tectonic setting. This fi eld trip to one of
Colorado’s scenic gems will examine how Paleozoic, Mesozoic, and Cenozoic strata
record the tectonic signatures of at least three orogenic episodes. We will c
Authors
Peter E Barkmann, Edward J Sterne, Marieke Dechesne, Karen J. Houck
Space and habitat use by breeding Golden-winged Warblers in the central Appalachian Mountains
Spot-mapping, or recording locations of observed use by territorial songbirds, is often used to delineate core breeding territories. However, a recent radiotelemetry study in Minnesota found that male Golden-winged Warblers (Vermivora chrysoptera) occurring in high-density populations used resources outside their spot-mapped territories. We compared differences in space use and quantified vegetati
Authors
Mack W. Frantz, Kyle R. Aldinger, Petra Wood, Joseph Duchamp, Timothy Nuttle, Andrew Vitz, Jeffrey L. Larkin
Spatially explicit models of full-season productivity and implications for landscape management of Golden-winged Warblers in the western Great Lakes Region
The relationship between landscape structure and composition and full-season productivity (FSP) is poorly understood for most birds. For species of high conservation concern, insight into how productivity is related to landscape structure and composition can be used to develop more effective conservation strategies that increase recruitment. We monitored nest productivity and fledgling survival of
Authors
Sean M. Peterson, Henry M. Streby, David E. Andersen
State-and-transition models: Conceptual versus simulation perspectives, usefulness and breadth of use, and land management applications
State-and-Transition Simulation Modeling (STSM) is a quantitative analysis method that can consolidate a wide array of resource management issues under a “what-if” scenario exercise. STSM can be seen as an ensemble of models, such as climate models, ecological models, and economic models that incorporate human dimensions and management options. This chapter presents STSM as a tool to help synthesi
Authors
Louis Provencher, Leonardo Frid, Christina Czembor, Jeffrey T. Morisette
Streamflow data
The importance of streamflow data to the world’s economy, environmental health, and public safety continues to grow as the population increases. The collection of streamflow data is often an involved and complicated process. The quality of streamflow data hinges on such things as site selection, instrumentation selection, streamgage maintenance and quality assurance, proper discharge measurement t
Authors
Robert R. Holmes
Streamflow ratings
Autonomous direct determination of a continuous time series of streamflow
is not economically feasible at present (2014). As such, surrogates are used to
derive a continuous time series of streamflow. The derivation process entails
developing a streamflow rating, which can range from a simple, single-valued
relation between stage and streamflow to a fully dynamic one-dimensional
model based o
Authors
Robert R. Holmes
Structural geometry of the Valley and Ridge and Plateaus provinces
The Valley and Ridge physiographic province comprises
the area between the Blue Ridge province on the east and the
Appalachian Plateau province on the west. The province consists
of Paleozoic carbonate and clastic rocks that were folded and
thrust faulted during the Alleghanian orogeny. The Appalachian Plateau
province consists of mostly flat lying to gently dipping upper
Paleozoic rocks, with the
Authors
Mark A. Evans, Randall C. Orndorff, William S. Henika
Subsidence induced by underground extraction
Subsidence induced by underground extraction is a class of human-induced (anthropogenic) land subsidence that principally is caused by the withdrawal of subsurface fluids (groundwater, oil, and gas) or by the underground mining of coal and other minerals.
Authors
Devin L. Galloway
Succession in wetlands
Succession refers to the change in vegetation over time driven by disturbances and the maturation of plant species. In wetlands, these disturbances include water and salinity level changes along other factors that can alter vegetation. The historical view of succession (Clementsian) was that vegetation change represented the linear progression of through stages of vegetation toward a climax state.
Authors
Beth A. Middleton
Tectonic tremor
Tectonic, non-volcanic tremor is a weak vibration of ground, which cannot be felt by humans but can be detected by sensitive seismometers. It is defined empirically as a low-amplitude, extended duration seismic signal associated with the deep portion (∼20–40 km depth) of some major faults. It is typically observed most clearly in the frequency range of 2–8 Hz and is depleted in energy at higher fr
Authors
David R. Shelly