Molecular analyses reveal high species diversity of trematodes in a sub-Arctic lake
Miroslava Soldanova, Simona Georgieva, Jana Rohacovaa, Rune Knudsen, Jesper A. Kuhn, Eirik H. Henriksen, Anna Siwertsson, Jenny C. Shaw, Armand M. Kuris, Per-Arne Amundsen, Tomas Scholz, Kevin D. Lafferty, Aneta Kostadinova
2017, International Journal for Parasitology (47) 327-345
To identify trematode diversity and life-cycles in the sub-Arctic Lake Takvatn, Norway, we characterised 120 trematode isolates from mollusc first intermediate hosts, metacercariae from second intermediate host fishes and invertebrates, and adults from fish and invertebrate definitive hosts, using molecular techniques. Phylogenies based on nuclear and/or mtDNA revealed high species...
Similarities and differences in occurrence and temporal fluctuations in glyphosate and atrazine in small Midwestern streams (USA) during the 2013 growing season
Barbara Mahler, Peter C. Van Metre, Thomas E. Burley, Keith A. Loftin, Michael T. Meyer, Lisa H. Nowell
2017, Science of the Total Environment (579) 149-158
Glyphosate and atrazine are the most intensively used herbicides in the United States. Although there is abundant spatial and temporal information on atrazine occurrence at regional scales, there are far fewer data for glyphosate, and studies that compare the two herbicides are rare. We investigated temporal patterns in glyphosate and...
Territory occupancy and breeding success of Peregrine Falcons Falco peregrinus at various stages of population recovery
Michael J. McGrady, James E. Hines, Chris Rollie, George D. Smith, Elise R. Morton, Jennifer F. Moore, Richard M. Mearns, Ian Newton, Oscar E. Murillo-Garcia, Madan K. Oli
2017, Ibis (159) 285-296
Organochlorine pesticides disrupted reproduction and killed many raptorial birds, and contributed to population declines during the 1940s to 1970s. We sought to discern whether and to what extent territory occupancy and breeding success changed from the pesticide era to recent years in a resident population of Peregrine Falcons Falco peregrinus...
Coastal single-beam bathymetry data collected in 2015 from Raccoon Point to Point Au Fer Island, Louisiana
Chelsea A. Stalk, Nancy T. DeWitt, Jack L. Kindinger, James G. Flocks, Billy J. Reynolds, Kyle W. Kelso, Joseph J. Fredericks, Thomas M. Tuten
2017, Data Series 1041
As part of the Barrier Island Comprehensive Monitoring Program (BICM), scientists from the U.S. Geological Survey (USGS) St. Petersburg Coastal and Marine Science Center conducted a nearshore single-beam bathymetry survey along the south-central coast of Louisiana, from Raccoon Point to Point Au Fer Island, in July 2015. The goal of...
Natural resource inventory and monitoring for Ulaan Taiga Specially Protected Areas—An assessment of needs and opportunities in northern Mongolia
Peggy E. Moore, Joseph B. Meyer, Leslie S. Chow
2017, Open-File Report 2017-1025
Between 1997 and 2011, Mongolia established three specially protected areas in the north-central part of the country to protect various high-value resources. These areas are jointly referred to as the Ulaan Taiga Specially Protected Areas. In accordance with the goals of the draft general management plan, this report identifies...
Groundwater-quality data in 12 GAMA study units: Results from the 2006–10 initial sampling period and the 2008–13 trend sampling period, California GAMA Priority Basin Project
Timothy M. Mathany
2017, Data Series 1038
The Priority Basin Project (PBP) of the Groundwater Ambient Monitoring and Assessment (GAMA) program was developed in response to the Groundwater Quality Monitoring Act of 2001 and is being conducted by the U.S. Geological Survey in cooperation with the California State Water Resources Control Board. From 2004 through 2012,...
Sediment data collected in 2014 and 2015 from around Breton and Gosier Islands, Breton National Wildlife Refuge, Louisiana
Julie Bernier, Kyle W. Kelso, Thomas M. Tuten, Chelsea A. Stalk, James G. Flocks
2017, Data Series 1037
Breton Island, located at the southern end of the Chandeleur Islands, supports one of Louisiana’s largest historical brown pelican (Pelecanus occidentalis) nesting colonies. Although the brown pelican was delisted as an endangered species in 2009, nesting areas are threatened by continued land loss and are extremely vulnerable to storm impacts....
Predicted pH at the domestic and public supply drinking water depths, Central Valley, California
Celia Z. Rosecrans, Bernard T. Nolan, Jo Ann M. Gronberg
2017, Scientific Investigations Map 3377
This scientific investigations map is a product of the U.S. Geological Survey (USGS) National Water-Quality Assessment (NAWQA) project modeling and mapping team. The prediction grids depicted in this map are of continuous pH and are intended to provide an understanding of groundwater-quality conditions at the domestic and public supply drinking...
The effects of forest cover on base flow of streams in the mountainous interior of Puerto Rico, 2010
Jesús Rodriguez-Martínez , Marilyn Santiago
2017, Scientific Investigations Report 2016-5142
The U.S. Geological Survey, in cooperation with the Puerto Rico Department of Natural and Environmental Resources, completed a study to determine whether a relation exists between the extent of forest cover and the magnitude of base flow at two sets of paired drainage basins in the highlands of the municipalities...
Vertical datum conversion process for the inland and coastal gage network located in the New England, Mid-Atlantic, and South Atlantic-Gulf hydrologic regions
Paul H. Rydlund Jr., Michael L. Noll
2017, Techniques and Methods 11-B8
Datum conversions from the National Geodetic Vertical Datum of 1929 to the North American Vertical Datum of 1988 among inland and coastal gages throughout the hydrologic regions of New England, the Mid-Atlantic, and the South Atlantic-Gulf have implications among river and storm surge forecasting, general commerce, and water-control operations. The...
Isotopic data for Late Cretaceous intrusions and associated altered and mineralized rocks in the Big Belt Mountains, Montana
Edward A. du Bray, Daniel M. Unruh, Albert H. Hofstra
2017, Data Series 1040
The quartz monzodiorite of Mount Edith and the concentrically zoned intrusive suite of Boulder Baldy constitute the principal Late Cretaceous igneous intrusions hosted by Mesoproterozoic sedimentary rocks of the Newland Formation in the Big Belt Mountains, Montana. These calc-alkaline plutonic masses are manifestations of subduction-related magmatism that prevailed along the...
Enhanced and updated spatially referenced statistical assessment of dissolved-solids load sources and transport in streams of the Upper Colorado River Basin
Matthew P. Miller, Susan G. Buto, Patrick M. Lambert, Christine A. Rumsey
2017, Scientific Investigations Report 2017-5009
Approximately 6.4 million tons of dissolved solids are discharged from the Upper Colorado River Basin (UCRB) to the Lower Colorado River Basin each year. This results in substantial economic damages, and tens of millions of dollars are spent annually on salinity control projects designed to reduce salinity loads in surface...
Mineral potential mapping in an accreted island-arc setting using aeromagnetic data: An example from southwest Alaska
Eric D. Anderson, Thomas Monecke, Murray W. Hitzman, Wendy Zhou, Paul A. Bedrosian
2017, Economic Geology (112) 375-396
The distribution of volcanogenic massive sulfide (VMS), porphyry-epithermal, Alaska-type ultramafic-mafic complexes, intrusion-related Au, and granitoid Sn-W ore deposits in southwest Alaska supports current metallogenic models linking the formation of these deposit types to the emplacement of different suites of igneous rocks during the evolution of this convergent plate margin....
Prediction and visualization of redox conditions in the groundwater of Central Valley, California
Celia Z. Rosecrans, Bernard T. Nolan, JoAnn M. Gronberg
2017, Journal of Hydrology (546) 341-356
Regional-scale, three-dimensional continuous probability models, were constructed for aspects of redox conditions in the groundwater system of the Central Valley, California. These models yield grids depicting the probability that groundwater in a particular location will have dissolved oxygen (DO) concentrations less than selected threshold values representing anoxic groundwater conditions,...
Bathymetry of Clear Creek Reservoir, Chaffee County, Colorado, 2016
Michael S. Kohn, Paul J. Kinzel, Jacob S. Mohrmann
2017, Scientific Investigations Map 3375
To better characterize the water supply capacity of Clear Creek Reservoir, Chaffee County, Colorado, the U.S. Geological Survey, in cooperation with the Pueblo Board of Water Works and Colorado Mountain College, carried out a bathymetry survey of Clear Creek Reservoir. A bathymetry map of the reservoir is presented here with...
Groundwater quality for 75 domestic wells in Lycoming County, Pennsylvania, 2014
Eliza L. Gross, Charles A. Cravotta
2017, Scientific Investigations Report 2016-5143
Groundwater is a major source of drinking water in Lycoming County and adjacent counties in north-central and northeastern Pennsylvania, which are largely forested and rural and are currently undergoing development for hydrocarbon gases. Water-quality data are needed for assessing the natural characteristics of the groundwater resource and the potential effects...
Detecting spatial ontogenetic niche shifts in complex dendritic ecological networks
William R. Fields, Evan H. Campbell Grant, Winsor H. Lowe
2017, Ecosphere (8)
Ontogenetic niche shifts (ONS) are important drivers of population and community dynamics, but they can be difficult to identify for species with prolonged larval or juvenile stages, or for species that inhabit continuous habitats. Most studies of ONS focus on single transitions among discrete habitat patches at local scales. However,...
Landsat eyes help guard the world's forests
Jon Campbell
2017, Fact Sheet 2017-3018
SummaryThe Landsat program is a joint effort between the U.S. Geological Survey (USGS) and the National Aeronautics and Space Administration (NASA), but the partner agencies have distinct roles. NASA develops remote-sensing instruments and spacecraft, launches satellites, and validates their performance in orbit. The USGS owns and operates Landsat satellites in...
Geospatial analysis identifies critical mineral-resource potential in Alaska
Susan M. Karl, Keith A. Labay
Katherine Jacques, Claire Landowski, editor(s)
2017, Fact Sheet 2017-3012
Alaska consists of more than 663,000 square miles (1,717,000 square kilometers) of land—more than a sixth of the total area of the United States—and large tracts of it have not been systematically studied or sampled for mineral-resource potential. Many regions of the State are known to have significant mineral-resource potential, and there are currently six operating mines...
A physics-based earthquake simulator and its application to seismic hazard assessment in Calabria (Southern Italy) region
Rodolfo Console, Anna Nardi, Roberto Carluccio, Maura Murru, Giuseppe Falcone, Thomas E. Parsons
2017, Acta Geophysica (65) 243-257
The use of a newly developed earthquake simulator has allowed the production of catalogs lasting 100 kyr and containing more than 100,000 events of magnitudes ≥4.5. The model of the fault system upon which we applied the simulator code was obtained from the DISS 3.2.0 database, selecting all the faults that...
Pyrogenic carbon distribution in mineral topsoils of the northeastern United States
Verena Jauss, Patrick J. Sullivan, Jonathan Sanderman, David B. Smith, Johannes Lehmann
2017, Geoderma (296) 69-78
Due to its slow turnover rates in soil, pyrogenic carbon (PyC) is considered an important C pool and relevant to climate change processes. Therefore, the amounts of soil PyC were compared to environmental covariates over an area of 327,757 km2 in the northeastern United States in order to understand the controls...
Water resources of the Southern Hills regional aquifer system, southeastern Louisiana
Vincent E. White
2017, Fact Sheet 2017-3010
Information concerning the availability, use, and quality of groundwater in the 10 parishes overlying the Southern Hills regional aquifer system of Louisiana (fig. 1) is critical for water-supply management. The purpose of this fact sheet is to present information that can be used by water managers, residents, and others for...
Re-Os systematics and age of pyrite associated with stratiform Zn-Pb mineralization in the Howards Pass district, Yukon and Northwest Territories, Canada
Karen D. Kelley, David Selby, Hendrik Falck, John F. Slack
2017, Mineralium Deposita (52) 317-335
Stratiform Zn-Pb deposits hosted in unmetamorphosed carbonaceous and siliceous mudstones of the Ordovician to Silurian Duo Lake Formation define the Howards Pass district in Yukon Territory and Northwest Territories, western Canada. Collectively, the deposits are amongst the largest in the world, containing drill-indicated and inferred resources of 423 Mt at 4.84 %...
Walrus haul-out and in water activity levels relative to sea ice availability in the Chukchi Sea
Chadwick V. Jay, Rebecca L. Taylor, Anthony S. Fischbach, Mark S. Udevitz, William S. Beatty
2017, Journal of Mammalogy (98) 386-396
An animal’s energetic costs are dependent on the amount of time it allocates to various behavioral activities. For Arctic pinnipeds, the time allocated to active and resting behaviors could change with future reductions in sea ice cover and longer periods of open water. The Pacific walrus (Odobenus rosmarus divergens) is...
Toppling analysis of the Echo Cliffs precariously balanced rock
Swetha Veeraraghavan, Kenneth W. Hudnut, Swaminathan Krishnan
2017, Bulletin of the Seismological Society of America (107) 72-84
Toppling analysis of a precariously balanced rock (PBR) can provide insight into the nature of ground motion that has not occurred at that location in the past and, by extension, can constrain peak ground motions for use in engineering design. Earlier approaches have targeted 2D models of the rock or...
