The Effect of modeled recharge distribution on simulated groundwater availability and capture
Fred D. Tillman, Donald R. Pool, Stanley A. Leake
2015, Groundwater (53) 378-388
Simulating groundwater flow in basin-fill aquifers of the semiarid southwestern United States commonly requires decisions about how to distribute aquifer recharge. Precipitation can recharge basin-fill aquifers by direct infiltration and transport through faults and fractures in the high-elevation areas, by flowing overland through high-elevation areas to infiltrate at basin-fill margins...
Similarities and differences in 13C and 15N stable isotope ratios in two non-lethal tissue types from shovelnose sturgeon Scaphirhynchus platorynchus (Rafinesque, 1820)
R. J. DeVries, Harold L. Schramm Jr.
2015, Journal of Applied Ichthyology (31) 474-478
We tested the hypothesis that δ13C and δ15N signatures of pectoral spines would provide measures of δ13C and δ15N similar to those obtained from fin clips for adult shovelnose sturgeon Scaphirhynchus platorynchus. Thirty-two shovelnose sturgeon (fork length [FL] = 500–724 mm) were sampled from the lower Mississippi River, USA on 23 February 2013. Isotopic...
Chloride concentrations, loads, and yields in four watersheds along Interstate 95, southeastern Connecticut, 2008-11: factors that affect peak chloride concentrations during winter storms
Craig J. Brown, John R. Mullaney, Jonathan Morrison, Joseph W. Martin, Thomas J. Trombley
2015, Scientific Investigations Report 2015-5057
Chloride (Cl-) concentrations and loads and other water chemistry characteristics were assessed to evaluate potential effects of road-deicer applications on streamwater quality in four watersheds along Interstate 95 (I–95) in southeastern Connecticut from November 1, 2008, through September 30, 2011. Streamflow and water quality were studied in the Four Mile...
National assessment of shoreline change: historical change along the north coast of Alaska, U.S.-Canadian border to Icy Cape
Ann E. Gibbs, Bruce M. Richmond
2015, Open-File Report 2015-1048
Beach erosion is a persistent problem along most open-ocean shores of the United States. Along the Arctic coast of Alaska, coastal erosion is widespread, may be accelerating, and is threatening defense and energy-related infrastructure, coastal habitats, and Native communities. As coastal populations continue to expand and infrastructure and habitat are...
National assessment of shoreline change: a GIS compilation of vector shorelines and associated shoreline change data for the north coast of Alaska, U.S.-Canadian border to Icy Cape
Ann E. Gibbs, Karen A. Ohman, Bruce M. Richmond
2015, Open-File Report 2015-1030
The Arctic Coastal Plain of northern Alaska is an area of strategic economic importance to the United States, is home to remote Native communities, and encompasses unique habitats of global significance. Coastal erosion along the Arctic coast is chronic, widespread, and may be accelerating, which threatens defense- and energy-related infrastructure,...
Bothriocephalus acheilognathi
Rebecca A. Cole, Anindo Choudhury
2015, Book chapter, Invasive Species Compendium
No abstract available....
Trench logs, terrestrial lidar system imagery, and radiocarbon data from the kilometer-62 site on the Greenville Fault, southeastern Alameda County, California, 2014
James J. Lienkaemper, Stephen B. DeLong, Nikita N. Avdievitch, Alexandra J. Pickering, Thomas P. Guilderson
2015, Open-File Report 2015-1122
In 2014, we investigated an abrupt 8.5-meter (m), right-laterally deflected stream channel located near the Greenville Fault in southeastern Alameda County, California (-121.56224° E, 37.53430° N) that we discovered using 0.5-m resolution, 2011 aerial lidar imagery flown along the active fault trace. Prior to trenching we surveyed the site using...
Chemical mixtures and environmental effects: a pilot study to assess ecological exposure and effects in streams
Herbert T. Buxton, Timothy J. Reilly, Kathryn Kuivila, Dana W. Kolpin, Paul M. Bradley, Daniel L. Villeneuve, Marc A. Mills
2015, Open-File Report 2015-1113
Assessment and management of the risks of exposure to complex chemical mixtures in streams are priorities for human and environmental health organizations around the world. The current lack of information on the composition and variability of environmental mixtures and a limited understanding of their combined effects are fundamental obstacles to...
Tsunami recurrence in the eastern Alaska-Aleutian arc: A Holocene stratigraphic record from Chirikof Island, Alaska
Alan R. Nelson, Richard W. Briggs, Tina Dura, Simon E. Engelhart, Guy Gelfenbaum, Lee-Ann Bradley, S.L. Forman, Christopher H. Vane, K.A. Kelley
2015, Geosphere (11) 1203
Despite the role of the Alaska-Aleutian megathrust as the source of some of the largest earthquakes and tsunamis, the history of its pre–twentieth century tsunamis is largely unknown west of the rupture zone of the great (magnitude, M 9.2) 1964 earthquake. Stratigraphy in core transects at two boggy lowland sites...
Downscaling global land-use/land-cover projections for use in region-level state-and-transition simulation modeling
Jason T. Sherba, Benjamin M. Sleeter, Adam W. Davis, Owen P. Parker
2015, AIMS Environmental Science (2) 623-647
Global land-use/land-cover (LULC) change projections and historical datasets are typically available at coarse grid resolutions and are often incompatible with modeling applications at local to regional scales. The difficulty of downscaling and reapportioning global gridded LULC change projections to regional boundaries is a barrier to the use of these datasets...
Comparing ecoregional classifications for natural areas management in the Klamath Region, USA
Daniel A. Sarr, Andrew Duff, Eric C. Dinger, Sarah L. Shafer, Michael Wing, Nathaniel E. Seavy, John D. Alexander
2015, Natural Areas Journal (35) 360-377
We compared three existing ecoregional classification schemes (Bailey, Omernik, and World Wildlife Fund) with two derived schemes (Omernik Revised and Climate Zones) to explore their effectiveness in explaining species distributions and to better understand natural resource geography in the Klamath Region, USA. We analyzed presence/absence data derived from digital distribution...
Tectonic and sedimentary linkages between the Belt-Purcell basin and southwestern Laurentia during the Mesoproterozoic ca. 1.60-1.40 Ga
James V. Jones III, Christohper G Dainel, Michael F Doe
2015, Lithosphere (7) 465-472
Mesoproterozoic sedimentary basins in western North America provide key constraints on pre-Rodinia craton positions and interactions along the western rifted margin of Laurentia. One such basin, the Belt-Purcell basin, extends from southern Idaho into southern British Columbia and contains a >18-km-thick succession of siliciclastic sediment deposited ca. 1.47–1.40 Ga. The...
Spatial and temporal variability in growth of southern flounder (Paralichthys lethostigma)
Stephen R. Midway, Tyler Wagner, Stephen A. Arnott, Patrick Biondo, Fernando Martinez-Andrade, Thomas F. Wadsworth
2015, Fisheries Research (167) 323-332
Delineation of stock structure is important for understanding the ecology and management of many fish populations, particularly those with wide-ranging distributions and high levels of harvest. Southern flounder (Paralichthys lethostigma) is a popular commercial and recreational species along the southeast Atlantic coast and Gulf of Mexico, USA. Recent studies have...
Is income breeding an appropriate construct for waterfowl?
Adam K. Janke, Michael J. Anteau, Nicholas Markl, Joshua D. Stafford
2015, Journal of Ornithology (165) 755-762
Breeding birds use a range of nutrient accumulation and allocation strategies to meet the nutritional demands of clutch formation and incubation. On one end of the spectrum, capital breeders use stored nutrients acquired prior to clutch formation and incubation to sustain metabolism during reproduction, while on the opposite end, income...
Comment on “The role of interbasin groundwater transfers in geologically complex terranes, demonstrated by the Great Basin in the western United States”: report published in Hydrogeology Journal (2014) 22:807–828, by Stephen T. Nelson and Alan L. Mayo
Melissa D. Masbruch, Lynette E. Brooks, Victor M. Heilweil, Donald S. Sweetkind
2015, Hydrogeology Journal (23) 209-210
The subject article (Nelson and Mayo 2014) presents an overview of previous reports of interbasin flow in the Great Basin of the western United States. This Comment is presented by authors of a cited study (comprising chapters in one large report) on the Great Basin carbonate and alluvial aquifer system...
Evapotranspiration in the Nile Basin: Identifying dynamics and drivers, 2002–2011
Henok Alemu, Armel T. Kaptue, Gabriel B. Senay, Michael C. Wimberly, Geoffrey M. Henebry
2015, Water (7) 4914-1931
Analysis of the relationship between evapotranspiration (ET) and its natural and anthropogenic drivers is critical in water-limited basins such as the Nile. The spatiotemporal relationships of ET with rainfall and vegetation dynamics in the Nile Basin during 2002–2011 were analyzed using satellite-derived data. Non-parametric statistics were used to quantify ET-rainfall...
Point spread functions for earthquake source imaging: An interpretation based on seismic interferometry
Hisashi Nakahara, Matthew M. Haney
2015, Geophysical Journal International (202) 54-61
Recently, various methods have been proposed and applied for earthquake source imaging, and theoretical relationships among the methods have been studied. In this study, we make a follow-up theoretical study to better understand the meanings of earthquake source imaging. For imaging problems, the point spread function (PSF) is used to...
Statistical analysis of soil geochemical data to identify pathfinders associated with mineral deposits: An example from the Coles Hill uranium deposit, Virginia, USA
Denise M. Levitan, Carl E. Zipper, Patricia Donovan, Madeline E. Schreiber, Robert R. Seal, Mark A. Engle, John A. Chermak, Robert J. Bodnar, Daniel K. Johnson, Joseph G. Aylor Jr.
2015, Journal of Geochemical Exploration (154) 238-251
Soil geochemical anomalies can be used to identify pathfinders in exploration for ore deposits. In this study, compositional data analysis is used with multivariate statistical methods to analyse soil geochemical data collected from the Coles Hill uranium deposit, Virginia, USA, to identify pathfinders associated with this deposit. Elemental compositions and...
Use of structured decision making to identify monitoring variables and management priorities for salt marsh ecosystems
Hilary A. Neckles, James E. Lyons, Glenn R. Guntenspergen, W. Gregory Shriver, Susan C. Adamowicz
2015, Estuaries and Coasts (38) 1215-1232
Most salt marshes in the USA have been degraded by human activities, and coastal managers are faced with complex choices among possible actions to restore or enhance ecosystem integrity. We applied structured decision making (SDM) to guide selection of monitoring variables and management priorities for salt marshes within the National...
Sea level and turbidity controls on mangrove soil surface elevation change
Catherine E. Lovelock, Maria Fernanda Adame, Vicki Bennion, Matthew Hayes, Ruth Reef, Nadia Santini, Donald R. Cahoon
2015, Estuarine, Coastal and Shelf Science (153) 1-9
Increases in sea level are a threat to seaward fringing mangrove forests if levels of inundation exceed the physiological tolerance of the trees; however, tidal wetlands can keep pace with sea level rise if soil surface elevations can increase at the same pace as sea level rise. Sediment accretion on...
The distribution of selected elements and minerals in soil of the conterminous United States
Laurel G. Woodruff, William F. Cannon, David B. Smith, Federico Solano
2015, Journal of Geochemical Exploration (154) 49-60
In 2007, the U.S. Geological Survey initiated a low-density (1 site per 1600 km2, 4857 sites) geochemical and mineralogical survey of soil of the conterminous United States as part of the North American Soil Geochemical Landscapes Project. Three soil samples were collected, if possible, from each site; (1) a sample from...
USGS National Wildlife Health Center quarterly mortality report January 2015 to March 2015
Anne Ballmann, Barbara L. Bodenstein, Robert J. Dusek, Daniel A. Grear, Jennifer G. Chipault
2015, Wildlife Disease Association Newsletter 4-6
No abstract available....
Nitrogen-Ammonia, 2014
Lori E. Apodaca
2015, Mining Engineering (67) 31-31
No abstract available....
Gemstones 2014
Donald W. Olson
2015, Mining Engineering (67) 31-31
No abstract available....
Habitat quality from individual- and population-level perspectives and implications for management
Than J. Boves, Amanda D. Rodewald, Petra Bohall Wood, David A. Buehler, Jeffrey L. Larkin, T. Bently Wigley, Patrick D. Keyser
2015, Wildlife Society Bulletin (39) 443-447
Many wildlife management prescriptions are either implicitly or explicitly designed to improve habitat quality for a focal species, but habitat quality is often difficult to quantify. Depending upon the approach used to define and identify high-quality habitat, management decisions may differ widely. Although individual-level measures of habitat quality based on...
