Science and Decisions Center
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The USGS Science and Decisions Center (SDC) is an interdisciplinary organization advancing the use of science in natural resource decision making. The Center focuses on research and applications in three science areas: decision science (adaptive management and structured decision making), ecosystem services, and resilience/sustainability.Science and Decisions Center Website
Adaptive management is "learning by doing" and adapting based on what is learned, in an objective, science-based management strategy that explicitly recognizes and delineates uncertainty.
Ecosystem services are attributes and outputs of ecosystems that are valued by human users. Ecosystem services are produced by ecosystem processes such as nutrient cycling, climate regulation, and maintenance of biodiversity. Ecosystems also provide marketable goods like seafood and timber.
Resilience is the ability of a system or a community to absorb shocks and still maintain the same basic structure and functions. Management for ecological resilience seeks flexible system behaviors that can deliver ecosystem goods and services on a sustained basis.
Geologic map of the Beacon Rock quadrangle, Skamania County, Washington
The Beacon Rock 7.5′ quadrangle is located approximately 50 km east of Portland, Oregon, on the north side of the Columbia River Gorge, a scenic canyon carved through the axis of the Cascade Range by the Columbia River. Although approximately 75,000 people live within the gorge, much of the region remains little developed and is encompassed by the...Evarts, Russell C.; Fleck, Robert J.
Regional and temporal variability of melts during a Cordilleran magma pulse: Age and chemical evolution of the jurassic arc, eastern mojave desert, California
Intrusive rock sequences in the central and eastern Mojave Desert segment of the Jurassic Cordilleran arc of the western United States record regional and temporal variations in magmas generated during the second prominent pulse of Mesozoic continental arc magmatism. U/Pb zircon ages provide temporal control for describing variations in rock and...Barth, A.P.; Wooden, J.L.; Miller, David; Howard, Keith A.; Fox, Lydia; Schermer, Elizabeth R.; Jacobson, C.E.
Reconnaissance sedimentology of selected tertiary exposures in the upland region bordering the Yukon Flats basin, east-central Alaska
This report summarizes reconnaissance sedimentologic and stratigraphic observations made during six days of helicopter-supported fieldwork in 2002 on Tertiary sedimentary rocks exposed in the upland region around the flanks of the Yukon Flats basin in east-central Alaska (fig. 1). This project was a cooperative effort between the Alaska Division...LePain, David L.; Stanley, Richard G.
Geologic map of the Providence Mountains in parts of the Fountain Peak and adjacent 7.5' quadrangles, San Bernardino County, California
IntroductionThe Providence Mountains are in the eastern Mojave Desert about 60 km southeast of Baker, San Bernardino County, California. This range, which is noted for its prominent cliffs of Paleozoic limestone, is part of a northeast-trending belt of mountainous terrain more than 100 km long that also includes the Granite Mountains, Mid Hills,...Stone, Paul; Miller, David M.; Stevens, Calvin H.; Rosario, Jose J.; Vazquez, Jorge A.; Wan, Elmira; Priest, Susan S.; Valin, Zenon C.
Excursions in fluvial (dis)continuity
Lurking below the twin concepts of connectivity and disconnectivity are their first, and in some ways, richer cousins: continuity and discontinuity. In this paper we explore how continuity and discontinuity represent fundamental and complementary perspectives in fluvial geomorphology, and how these perspectives inform and underlie our conceptions...Grant, Gordon E.; O'Connor, James E.; Safran, Elizabeth
Larval aquatic insect responses to cadmium and zinc in experimental streams
To evaluate the risks of metal mixture effects to natural stream communities under ecologically relevant conditions, the authors conducted 30-d tests with benthic macroinvertebrates exposed to cadmium (Cd) and zinc (Zn) in experimental streams. The simultaneous exposures were with Cd and Zn singly and with Cd+Zn mixtures at environmentally...Mebane, Christopher A.; Schmidt, Travis S.; Balistrieri, Laurie S.
Regional geophysics of western Utah and eastern Nevada, with emphasis on the Confusion Range
As part of a long term geologic and hydrologic study of several regional groundwater flow systems in western Utah and eastern Nevada, the U.S. Geological Survey was contracted by the Southern Nevada Water Authority to provide geophysical data. The primary object of these data was to enable construction of the geological framework of the flow...Mankinen, Edward A.; Rowley, Peter D.; Dixon, Gary L.; McKee, Edwin H.
Paleogeographic implications of Late Miocene lacustrine and nonmarine evaporite deposits in the Lake Mead region: Immediate precursors to the Colorado River
Thick late Miocene nonmarine evaporite (mainly halite and gypsum) and related lacustrine limestone deposits compose the upper basin fill in half grabens within the Lake Mead region of the Basin and Range Province directly west of the Colorado Plateau in southern Nevada and northwestern Arizona. Regional relations and geochronologic data indicate...Faulds, James E; Schreiber, Charlotte; Langenheim, Victoria; Hinz, Nicholas H; Shaw, Tom; Heizler, Matthew T.; Perkins, Michael E; El Tabakh, Mohammed; Kunk, Michael J.
U.S. Geological Survey assessment of global potash production and resources—A significant advancement for global development and a sustainable future.
During the past 15 yr, the global requirement for fertilizers has grown considerably, mainly due to demand by a larger and wealthier world population for more and higher-quality food. The demand and price for potash as a primary fertilizer ingredient have increased in tandem, because of the necessity to increase the quantity and quality of food...Cocker, Mark D.; Orris, Greta J.; Wynn, Jeff
The Bonneville Flood—A veritable débâcle: Chapter 6
The Bonneville Flood was one of the largest floods on Earth. First discovered by G.K. Gilbert in the 1870s during his inspection of the outlet at Red Rock Pass, it was rediscovered in the 1950s by Harold Malde and coworkers, leading to mapping and assessment of spectacular flood features along Marsh Creek, Portneuf River, and Snake River for over...O'connor, James
Age, distribution and style of deformation in Alaska north of 60°N: Implications for assembly of Alaska
The structural architecture of Alaska is the product of a complex history of deformation along both the Cordilleran and Arctic margins of North America involving oceanic plates, subduction zones and strike-slip faults and with continental elements of Laurentia, Baltica, and Siberia. We use geological constraints to assign regions of deformation to...Moore, Thomas; Box, Stephen E.
Bedrock morphology and structure, upper Santa Cruz Basin, south-central Arizona, with transient electromagnetic survey data
The upper Santa Cruz Basin is an important groundwater basin containing the regional aquifer for the city of Nogales, Arizona. This report provides data and interpretations of data aimed at better understanding the bedrock morphology and structure of the upper Santa Cruz Basin study area which encompasses the Rio Rico and Nogales 1:24,000-scale U....Bultman, Mark W.; Page, William R.
Budget Focuses on Core USGS Science and Efficiency
In a finding authors are coining an "unintentional rewilding," scientists identified a cave dung deposit as belonging to bighorn sheep that became extinct on a desert island sometime between the 6th and the 20th century.