3D Elevation Program: summary for Nebraska
William J. Carswell Jr.
2015, Fact Sheet 2014-3112
Elevation data are essential to a broad range of applications, including forest resources management, wildlife and habitat management, national security, recreation, and many others. For the State of Nebraska, elevation data are critical for agriculture and precision farming, natural resources conservation, flood risk management, infrastructure and construction management, geologic resource...
3D Elevation Program: summary for Vermont
William J. Carswell Jr.
2015, Fact Sheet 2015-3002
Elevation data are essential to a broad range of applications, including forest resources management, wildlife and habitat management, national security, recreation, and many others. For the State of Vermont, elevation data are critical for hazard mitigation, geologic resource assessment, natural resources conservation, agriculture and precision farming, flood risk management, infrastructure...
Distribution and biophysical processes of beaded streams in Arctic permafrost landscapes
Christopher D. Arp, Matthew S. Whitman, Benjamin M. Jones, Guido Grosse, Benjamin V. Gaglioti, Kurt C. Heim
2015, Biogeosciences (12) 29-47
Beaded streams are widespread in permafrost regions and are considered a common thermokarst landform. However, little is known about their distribution, how and under what conditions they form, and how their intriguing morphology translates to ecosystem functions and habitat. Here we report on a Circum-Arctic survey of beaded streams and...
Growth rates and variances of unexploited wolf populations in dynamic equilibria
L. David Mech, John Fieberg
2015, Wildlife Society Bulletin (39) 41-48
Several states have begun harvesting gray wolves (Canis lupus), and these states and various European countries are closely monitoring their wolf populations. To provide appropriate perspective for determining unusual or extreme fluctuations in their managed wolf populations, we analyzed natural, long-term, wolf-population-density trajectories totaling 130 years of data from 3...
Storage and release of organic carbon from glaciers and ice sheets
Eran Hood, Tom J. Battin, Jason Fellman, Shad O’Neel, Robert G. M. Spencer
2015, Nature Geoscience (8) 91-96
Polar ice sheets and mountain glaciers, which cover roughly 11% of the Earth's land surface, store organic carbon from local and distant sources and then release it to downstream environments. Climate-driven changes to glacier runoff are expected to be larger than climate impacts on other components of the hydrological cycle,...
Simulated big sagebrush regeneration supports predicted changes at the trailing and leading edges of distribution shifts
Daniel R. Schlaepfer, Kyle A. Taylor, Victoria E. Pennington, Kellen N. Nelson, Trace E. Martin, Caitlin M. Rottler, William K. Lauenroth, John B. Bradford
2015, Ecosphere (6)
Many semi-arid plant communities in western North America are dominated by big sagebrush. These ecosystems are being reduced in extent and quality due to economic development, invasive species, and climate change. These pervasive modifications have generated concern about the long-term viability of sagebrush habitat and sagebrush-obligate wildlife species (notably greater...
Areas contributing recharge to production wells and effects of climate change on the groundwater system in the Chipuxet River and Chickasheen Brook Basins, Rhode Island
Paul J. Friesz, Janet Radway Stone
2015, Scientific Investigations Report 2014-5216
The Chipuxet River and Chickasheen Brook Basins in southern Rhode Island are an important water resource for public and domestic supply, irrigation, recreation, and aquatic habitat. The U.S. Geological Survey, in cooperation with the Rhode Island Department of Health, began a study in 2012 as part of an effort to...
Late Quaternary slip history of the Mill Creek strand of the San Andreas fault in San Gorgonio Pass, southern California: The role of a subsidiary left-lateral fault in strand switching
Katherine J. Kendrick, Jonathan C. Matti, Shannon A. Mahan
2015, Geological Society of America Bulletin (127) 825-849
The fault history of the Mill Creek strand of the San Andreas fault (SAF) in the San Gorgonio Pass region, along with the reconstructed geomorphology surrounding this fault strand, reveals the important role of the left-lateral Pinto Mountain fault in the regional fault strand switching. The Mill Creek strand has...
Effects of hierarchical roost removal on northern long-eared bat (Myotis septentrionalis) maternity colonies
Alexander Silvis, W. Mark Ford, Eric R. Britzke
2015, PLoS ONE (10)
Forest roosting bats use a variety of ephemeral roosts such as snags and declining live trees. Although conservation of summer maternity habitat is considered critical for forest-roosting bats, bat response to roost loss still is poorly understood. To address this, we monitored 3 northern long-eared bat (Myotis septentrionalis) maternity colonies...
North America's net terrestrial CO2 exchange with the atmosphere 1990–2009
A.W. King, R.J. Andres, K.J. Davis, M. Hafer, D.J. Hayes, Deborah N. Huntzinger, Bernardus de Jong, W.A. Kurz, A. David McGuire, Rodrigo I. Vargas, Y. Wei, Tristram O. West, Christopher W. Woodall
2015, Biogeosciences (12) 399-414
Scientific understanding of the global carbon cycle is required for developing national and international policy to mitigate fossil fuel CO2 emissions by managing terrestrial carbon uptake. Toward that understanding and as a contribution to the REgional Carbon Cycle Assessment and Processes (RECCAP) project, this paper provides a synthesis of net land–atmosphere...
Farallon de Medinilla seabird and Tinian moorhen analyses
Richard J. Camp, Christina R. Leopold, Kevin W. Brinck, Franz Juola
2015, Technical Report HCSU-060
This report assesses the trends in brown booby (Sula leucogaster), masked booby (S. dactylatra), and red-footed booby (S. sula) counts collected on Farallon de Medinilla and Mariana common moorhen (Gallinula chloropus guami) counts on Tinian, Commonwealth of the Northern Mariana Islands to help elucidate patterns in bird numbers. During either...
The quality of our Nation's waters: Groundwater quality in the Columbia Plateau and Snake River Plain basin-fill and basaltic-rock aquifers and the Hawaiian volcanic-rock aquifers, Washington, Idaho, and Hawaii, 1993-2005
Michael G. Rupert, Charles D. Hunt Jr., Kenneth D. Skinner, Lonna M. Frans, Barbara Mahler
2015, Circular 1359
The Columbia Plateau, Snake River Plain, and Hawaii are large volcanic areas in the western United States and mid-Pacific ocean that contain extensive regional aquifers of a hard, gray, volcanic rock called basalt. Residents of the Columbia Plateau, the Snake River Plain, and the island of Oahu depend on groundwater...
The quality of our Nation's waters: Water quality in basin-fill aquifers of the southwestern United States: Arizona, California, Colorado, Nevada, New Mexico, and Utah, 1993-2009
Susan A. Thiros, Angela P. Paul, Laura M. Bexfield, David W. Anning
2015, Circular 1358
The Southwest Principal Aquifers consist of many basin-fill aquifers in California, Nevada, Utah, Arizona, New Mexico, and Colorado. Demands for irrigation and drinking water have substantially increased groundwater withdrawals and irrigation return flow to some of these aquifers. These changes have increased the movement of contaminants from geologic and human...
The quality of our Nation's waters: Water quality in the Mississippi embayment-Texas coastal uplands aquifer system and Mississippi River Valley alluvial aquifer, south-central United States, 1994-2008
James A. Kingsbury, Jeannie R. B. Barlow, Brian G. Katz, Heather L. Welch, Roland W. Tollett, Lynne S. Fahlquist
2015, Circular 1356
About 8 million people rely on groundwater from the Mississippi embayment—Texas coastal uplands aquifer system for drinking water. The Mississippi River Valley alluvial aquifer also provides drinking water for domestic use in rural areas but is of primary importance to the region as a source of water for irrigation. Irrigation...
The quality of our nation's waters: Water quality in the Principal Aquifers of the Piedmont, Blue Ridge, and Valley and Ridge regions, eastern United States, 1993-2009
Bruce D. Lindsey, Tammy M. Zimmerman, Melinda J. Chapman, Charles A. Cravotta III,, Zoltan Szabo
2015, Circular 1354
The aquifers of the Piedmont, Blue Ridge, and Valley and Ridge regions underlie an area with a population of more than 40 million people in 10 states. The suburban and rural population is large, growing rapidly, and increasingly dependent on groundwater as a source of supply, with more than 550...
The quality of our Nation's waters: Water quality in the glacial aquifer system, northern United States, 1993-2009
Kelly L. Warner, Joseph D. Ayotte
2015, Circular 1352
The glacial aquifer system underlies much of the northern United States. About one-sixth (41 million people) of the United States population relies on the glacial aquifer system for drinking water. The primary importance of the glacial aquifer system is as a source of water for public supply to the population...
The quality of our Nation's waters: Water quality in principal aquifers of the United States, 1991-2010
Leslie A. DeSimone, Peter B. McMahon, Michael R. Rosen
2015, Circular 1360
About 130 million people in the United States rely on groundwater for drinking water, and the need for high-quality drinking-water supplies becomes more urgent as our population grows. Although groundwater is a safe, reliable source of drinking water for millions of people nationwide, high concentrations of some chemical constituents can...
The quality of our Nation's waters: Water quality in the Northern Atlantic Coastal Plain surficial aquifer system, Delaware, Maryland, New Jersey, New York, North Carolina, and Virginia, 1988-2009
Judith M. Denver, Scott W. Ator, Jeffrey M. Fischer, Douglas C. Harned, Christopher Schubert, Zoltan Szabo
2015, Circular 1353
The surficial aquifer system of the Northern Atlantic Coastal Plain is made up of unconfined aquifers that underlie most of the area. This aquifer system is a critical renewable source of drinking water and is the source of most flow to streams and of recharge to underlying confined aquifers. Millions...
The quality of our Nation's waters: Water quality in the Upper Floridan aquifer and overlying surficial aquifers, southeastern United States, 1993-2010
Marian P. Berndt, Brian G. Katz, James A. Kingsbury, Christy A. Crandall
2015, Circular 1355
About 10 million people rely on groundwater from the Upper Floridan and surficial aquifers for drinking water. The Upper Floridan aquifer also is of primary importance to the region as a source of water for irrigation and as a source of crystal clear water that discharges to springs and streams...
Hydrogeology of the Ramapo River-Woodbury Creek valley-fill aquifer system and adjacent areas in eastern Orange County, New York
Paul M. Heisig
2015, Scientific Investigations Report 2014-5156
The hydrogeology of the valley-fill aquifer system and surrounding watershed areas was investigated within a 23-mile long, fault-controlled valley in eastern Orange County, New York. Glacial deposits form a divide within the valley that is drained to the north by Woodbury Creek and is drained to the south by the...
Soil greenhouse gas emissions and carbon budgeting in a short-hydroperiod floodplain wetland
Jackie Batson, Gregory B. Noe, Cliff R. Hupp, Ken W. Krauss, Nancy B. Rybicki, Edward R. Schenk
2015, Journal of Geophysical Research: Biogeosciences (120) 77-95
Understanding the controls on floodplain carbon (C) cycling is important for assessing greenhouse gas emissions and the potential for C sequestration in river-floodplain ecosystems. We hypothesized that greater hydrologic connectivity would increase C inputs to floodplains that would not only stimulate soil C gas emissions but also sequester more C...
Timelines and mechanisms of wildlife population recovery following the Exxon Valdez Oil Spill
Daniel Esler, James L. Bodkin, Brenda E. Ballachey, Daniel Monson, Kimberly A. Kloecker, George G. Esslinger
2015, Deep Sea Research Part II: Topical Studies in Oceanography 5-6-5-17
In March 1989, the T/V Exxon Valdez ran aground in Prince William Sound (PWS), Alaska and spilled an estimated 42 million liters of crude oil (Wolfe et al. 1994). This oil subsequently spread over more than 26,000 km2 of water surface in PWS and the Gulf of Alaska and landed...
Enhanced understanding of ectoparasite: host trophic linkages on coral reefs through stable isotope analysis
Amanda W.J. Demopoulos, Paul C. Sikkel
2015, International Journal for Parasitology: Parasites and Wildlife (4) 125-134
Parasitism, although the most common type of ecological interaction, is usually ignored in food web models and studies of trophic connectivity. Stable isotope analysis is widely used in assessing the flow of energy in ecological communities and thus is a potentially valuable tool in understanding the cryptic trophic relationships mediated...
Assessment of undiscovered copper resources associated with the Permian Kupferschiefer, Southern Permian Basin, Europe
Michael L. Zientek, Slawomir Oszczepalski, Heather L. Parks, James D. Bliss, Gregor Borg, Stephen E. Box, Paul Denning, Timothy S. Hayes, Volker Spieth, Cliff D. Taylor
2015, Scientific Investigations Report 2010-5090-U
This study synthesizes available information and estimates the location and quantity of undiscovered copper associated with a late Permian bituminous shale, the Kupferschiefer, of the Southern Permian Basin in Europe. The purpose of this study is to (1) delineate permissive areas (tracts) where undiscovered reduced-facies sediment-hosted stratabound copper deposits could...
Concentrations of hormones, pharmaceuticals and other micropollutants in groundwater affected by septic systems in New England and New York
Patrick J. Phillips, Christopher Schubert, Denise M. Argue, Irene J. Fisher, Edward T. Furlong, William T. Foreman, James L. Gray, Ann T. Chalmers
2015, Science of the Total Environment (512-513) 43-54
Septic-system discharges can be an important source of micropollutants (including pharmaceuticals and endocrine active compounds) to adjacent groundwater and surface water systems. Groundwater samples were collected from well networks tapping glacial till in New England (NE) and sandy surficial aquifer New York (NY) during one sampling round in 2011. The...
