Characterization of subsurface stratigraphy along the lower American River floodplain using electrical resistivity, Sacramento, California, 2011
Bethany L. Burton, Michael H. Powers, Lyndsay B. Ball
2014, Open-File Report 2014-1242
In July 2011, the U.S. Geological Survey, in cooperation with the U.S. Army Corps of Engineers, completed a geophysical survey using electrical resistivity along an approximately 6-mile reach of the lower American River in Sacramento, California, to map near-surface lithological variations. This survey is a part of a manifold and...
Geologic map of metallic and nonmetallic mineral deposits, Badakhshan Province, Afghanistan, modified from the 1967 original map compilation of G.G. Semenov and others
Stephen G. Peters, Will R. Stettner, Donald P. Mathieux, Linda M. Masonic, Thomas W. Moran
2014, Open-File Report 2014-1119-A
This geologic map of central Badakhshan Province, Afghanistan, is a combined, redrafted, and modified version of the Geological map of central Badakhshan, scale 1:200,000 (sheet 217), and Map of minerals of central Badakhshan, scale 1:200,000 (also sheet 217) from Semenov and others (1967) (Soviet report no. R0815). That unpublished Soviet report contains the original...
Geologic map of the Weka Dur gold deposit, Badakhshan Province, Afghanistan, modified from the 1967 original map compilation of M.P. Guguev and others
Stephen G. Peters, Will R. Stettner, Linda M. Masonic
2014, Open-File Report 2014-1119-B
This geologic map of the Weka Dur gold deposit located in Badakhshan Province, Afghanistan, is a redrafted and modified version of the Geological map of the Weka Dur area, scale 1:10,000 and Geological map of the Weka Dur deposit, scale 1:2,000 from Guguev and others (1967) (Soviet report no. R1584). That unpublished Soviet report...
Waterfowl populations of conservation concern: learning from diverse challenges, models, and conservation strategies
Jane E. Austin, Stuart Slattery, Robert G. Clark
2014, Wildfowl (2014) 470-497
There are 30 threatened or endangered species of waterfowl worldwide, and several sub-populations are also threatened. Some of these species occur in North America, and others there are also of conservation concern due to declining population trends and their importance to hunters. Here we review conservation initiatives being undertaken for...
Geologic map of the Ahankashan-Rakhna basin, Badghis, Ghor, and Herat Provinces, Afghanistan, modified from the 1974 original map compilation of Y.I. Shcherbina and others
Robert D. Tucker, Will R. Stettner, Linda M. Masonic, Anya K. Bogdanow
2014, Open-File Report 2014-1199
This geologic map of the Ahankashan-Rakhna basin, Afghanistan, is a redrafted and modified version of the Geological map of the area of Ahankashan-Rakhna basin, scale 1:50,000 and Geological map of the Ahankashan area with data on mineral resources, scale 1:12,000 from Shcherbina and others (1974) (Soviet report no. 0822). That unpublished Soviet report contains...
Effects of capturing and collaring on polar bears: findings from long-term research on the southern Beaufort Sea population
Karyn D. Rode, Anthony M. Pagano, Jeffrey F. Bromaghin, Todd C. Atwood, George M. Durner, Kristin S. Simac, Steven C. Amstrup
2014, Wildlife Research (41) 311-322
Context: The potential for research methods to affect wildlife is an increasing concern among both scientists and the public. This topic has a particular urgency for polar bears because additional research is needed to monitor and understand population responses to rapid loss of sea ice habitat.Aims: This study used data collected from...
Identifying polar bear resource selection patterns to inform offshore development in a dynamic and changing Arctic
Ryan H. Wilson, Jon S. Horne, Karyn D. Rode, Eric V. Regehr, George M. Durner
2014, Ecosphere (5)
Although sea ice loss is the primary threat to polar bears (Ursus maritimus), little can be done to mitigate its effects without global efforts to reduce greenhouse gas emissions. Other factors, however, could exacerbate the impacts of sea ice loss on polar bears, such as exposure to increased industrial activity....
Characteristics of Hawaiian volcanoes
Michael P. Poland, T. Jane Takahashi, Claire M. Landowski, editor(s)
2014, Professional Paper 1801
Founded in 1912 at the edge of the caldera of Kīlauea Volcano, HVO was the vision of Thomas A. Jaggar, Jr., a geologist from the Massachusetts Institute of Technology, whose studies of natural disasters around the world had convinced him that systematic, continuous observations of seismic and volcanic activity were...
Efficacy of iodine for disinfection of Lake Sturgeon eggs from the St. Lawrence River, New York
Marc A. Chalupnicki, Dawn E. Dittman, Clifford E. Starliper, Deborah D. Iwanowicz
2014, North American Journal of Aquaculture (77) 82-89
Optimal fish husbandry to reduce the risk of disease is particularly important when using wild fish as the source for gametes. The propagation and reestablishment of Lake Sturgeon Acipenser fulvescens in New York waters to become a viable self-sustaining population is considered a high priority by managers. While standard hatchery...
Groundwater-quality data in the Santa Cruz, San Gabriel, and Peninsular Ranges Hard Rock Aquifers study unit, 2011-2012: results from the California GAMA program
Tracy A. Davis, Jennifer L. Shelton
2014, Data Series 874
Groundwater quality in the 2,400-square-mile Santa Cruz, San Gabriel, and Peninsular Ranges Hard Rock Aquifers (Hard Rock) study unit was investigated by the U.S. Geological Survey (USGS) from March 2011 through March 2012, as part of the California State Water Resources Control Board (SWRCB) Groundwater Ambient Monitoring and Assessment (GAMA)...
Surficial geology and stratigraphy of Pleistocene Lake Manix, San Bernardino County, California
Marith C. Reheis, Joanna R. Redwine, Elmira Wan, John P. McGeehin, D. Paco VanSistine
2014, Scientific Investigations Map 3312
Pluvial Lake Manix and its surrounding drainage basin, in the central Mojave Desert of California, has been a focus of paleoclimate, surficial processes, and neotectonic studies by the U.S. Geological Survey (USGS) since about 2004. The USGS initiated studies of Lake Manix deposits to improve understanding of the paleoclimatic record...
Steady-state numerical groundwater flow model of the Great Basin carbonate and alluvial aquifer system
Lynette E. Brooks, Melissa D. Masbruch, Donald S. Sweetkind, Susan G. Buto
2014, Scientific Investigations Report 2014-5213
This report describes the construction, calibration, evaluation, and results of a steady-state numerical groundwater flow model of the Great Basin carbonate and alluvial aquifer system that was developed as part of the U.S. Geological Survey National Water Census Initiative to evaluate the nation’s groundwater availability. The study area spans 110,000...
Acoustic telemetry reveals large-scale migration patterns of walleye in Lake Huron
Todd A. Hayden, Christopher Holbrook, David G. Fielder, Christopher S. Vandergoot, Roger A. Bergstedt, John M. Dettmers, Charles C. Krueger, Steven J. Cooke
2014, PLoS ONE (9) 1-19
Fish migration in large freshwater lacustrine systems such as the Laurentian Great Lakes is not well understood. The walleye (Sander vitreus) is an economically and ecologically important native fish species throughout the Great Lakes. In Lake Huron walleye has recently undergone a population expansion as a result of recovery of...
Tree growth and recruitment in a leveed floodplain forest in the Mississippi River Alluvial Valley, USA
Hugo K.W. Gee, Sammy L. King, Richard F. Keim
2014, Forest Ecology and Management (334) 85-95
Flooding is a defining disturbance in floodplain forests affecting seed germination, seedling establishment, and tree growth. Globally, flood control, including artificial levees, dams, and channelization has altered flood regimes in floodplains. However, a paucity of data are available in regards to the long-term effects of levees on stand establishment and...
A multiscale, hierarchical model of pulse dynamics in arid-land ecosystems
Scott L. Collins, Jayne Belnap, N. B. Grimm, J. A. Rudgers, Clifford N. Dahm, P. D’Odorico, M. Litvak, D. O. Natvig, Douglas C. Peters, W. T. Pockman, R. L. Sinsabaugh, B. O. Wolf
2014, Annual Review of Ecology, Evolution, and Systematics (45) 397-419
Ecological processes in arid lands are often described by the pulse-reserve paradigm, in which rain events drive biological activity until moisture is depleted, leaving a reserve. This paradigm is frequently applied to processes stimulated by one or a few precipitation events within a growing season. Here we expand the original...
Nitrogen speciation and trends, and prediction of denitrification extent, in shallow US groundwater
Stephen R. Hinkle, Anthony J. Tesoriero
2014, Journal of Hydrology (509) 343-353
Uncertainties surrounding nitrogen cycling complicate assessments of the environmental effects of nitrogen use and our understanding of the global carbon–nitrogen cycle. In this paper, we synthesize data from 877 ambient-monitoring wells across the US to frame broad patterns of nitrogen speciation and trends. At these sites, groundwater frequently contains substantial...
Fish community dynamics following dam removal in a fragmented agricultural stream
Matthew Kornis, Brian Weidel, Stephens Powers, Matthew W. Diebel, Timpthy Cline, Justin Fox, James F. Kitchell
2014, Aquatic Sciences (77) 465-480
Habitat fragmentation impedes dispersal of aquatic fauna, and barrier removal is increasingly used to increase stream network connectivity and facilitate fish dispersal. Improved understanding of fish community response to barrier removal is needed, especially in fragmented agricultural streams where numerous antiquated dams are likely destined for removal. We examined post-removal...
Bedrock geologic and structural map through the western Candor Colles region of Mars
Chris H. Okubo
2014, Scientific Investigations Map 3309
The Candor Colles are a population of low, conical hills along the southeast flank of Ceti Mensa, in west Candor Chasma, within the Valles Marineris system of Mars (fig. 1). Ceti Mensa and the adjacent Candor Mensa are mounds of layered sedimentary deposits and are the most prominent landforms within...
Opposing resonses to ecological gradients structure amphibian and reptile communities across a temperate grassland-savanna-forest landscape
Ralph Grundel, David Beamer, Gary A. Glowacki, Krystal Frohnapple, Noel B. Pavlovic
2014, Biodiversity and Conservation (24) 1089-1108
Temperate savannas are threatened across the globe. If we prioritize savanna restoration, we should ask how savanna animal communities differ from communities in related open habitats and forests. We documented distribution of amphibian and reptile species across an open-savanna–forest gradient in the Midwest U.S. to determine how fire history and...
Mercury in birds of San Francisco Bay-Delta, California: trophic pathways, bioaccumulation, and ecotoxicological risk to avian reproduction
Joshua T. Ackerman, Collin A. Eagles-Smith, Gary Heinz, Susan E.W. De La Cruz, John Y. Takekawa, A. Keith Miles, Terrence L. Adelsbach, Mark P. Herzog, Jill D. Bluso-Demers, Scott A. Demers, Garth Herring, David J. Hoffman, Christopher A. Hartman, James J. Willacker, Thomas H. Suchanek, Steven E. Schwarzbach, Thomas C. Maurer
2014, Open-File Report 2014-1251
San Francisco Bay Estuary in northern California has a legacy of mercury contamination, which could reduce the health and reproductive success of waterbirds in the estuary. The goal of this study was to use an integrated field and laboratory approach to evaluate the risks of mercury exposure to birds in...
Water-quality, bed-sediment, and biological data (October 2012 through September 2013) and statistical summaries of data for streams in the Clark Fork Basin, Montana
Kent A. Dodge, Michelle I. Hornberger, Jessica Dyke
2014, Open-File Report 2014-1244
Water, bed sediment, and biota were sampled in streams from Butte to near Missoula, Montana, as part of a monitoring program in the upper Clark Fork Basin of western Montana. The sampling program was led by the U.S. Geological Survey in cooperation with the U.S. Environmental Protection Agency to characterize...
National assessment of hurricane-induced coastal erosion hazards: Northeast Atlantic Coast
Justin J. Birchler, Hilary F. Stockdon, Kara S. Doran, David M. Thompson
2014, Open-File Report 2014-1243
Beaches serve as a natural buffer between the ocean and inland communities, ecosystems, and natural resources. However, these dynamic environments move and change in response to winds, waves, and currents. During extreme storms, changes to beaches can be great, and the results are sometimes catastrophic. Lives may be lost, communities...
Proper handling of animal tissues from the field to the laboratory supports reliable biomarker endpoints
Heather M. Olivier, Jill A. Jenkins
J. B. Alford, Mark S. Peterson, Christopher C. Green, editor(s)
2014, Book chapter, Impacts of oil spill disasters on marine habitats and fisheries in North America
In the endeavor to assess potential effects to the Gulf of Mexico ecosystem from the Mississippi Canyon 252 incident, referred to as the Deepwater Horizon oil spill, various environmental data have been collected. Whereas initial efforts have included satellite tracking and sediment and water sampling to estimate the geographical scope...
Geospatial compilation of historical water-level changes in the Chicot and Evangeline aquifers 1977-2013 and Jasper aquifer 2000-13, Gulf Coast aquifer system, Houston-Galveston region, Texas
Michaela R. Johnson, Joshua I. Linard
2014, Data Series 900
The U.S. Geological Survey (USGS) in cooperation with the Harris-Galveston Subsidence District, City of Houston, Fort Bend Subsidence District, Lone Star Groundwater Conservation District, and Brazoria County Groundwater Conservation District has produced an annual series of reports that depict water-level changes in the Chicot, Evangeline, and Jasper aquifers of the...
DOI/GTN-P climate and active-layer data acquired in the National Petroleum Reserve-Alaska and the Arctic National Wildlife Refuge
Frank E. Urban, Gary D. Clow
2014, Data Series 892
This report provides data collected by the climate monitoring array of the U.S. Department of the Interior on Federal lands in Arctic Alaska over the period August 1998 to July 2013; this array is part of the Global Terrestrial Network for Permafrost, (DOI/GTN-P). In addition to presenting data, this report...
