GIS-Based Identification of Areas with Mineral Resource Potential for Six Selected Deposit Groups, Bureau of Land Management Central Yukon Planning Area, Alaska
James V. Jones III, Susan M. Karl, Keith A. Labay, Nora B. Shew, Matthew Granitto, Timothy S. Hayes, Jeffrey L. Mauk, Jeanine M. Schmidt, Erin Todd, Bronwen Wang, Melanie B. Werdon, Douglas B. Yager
2015, Open-File Report 2015-1021
This study, covering the Bureau of Land Management (BLM) Central Yukon Planning Area (CYPA), Alaska, was prepared to aid BLM mineral resource management planning. Estimated mineral resource potential and certainty are mapped for six selected mineral deposit groups: (1) rare earth element (REE) deposits associated with peralkaline to carbonatitic intrusive...
Scanning and georeferencing historical USGS quadrangles (ver. 2.0, May 2015)
Larry R. Davis, William J. Carswell Jr.
2015, Fact Sheet 2011-3009-(version 2.0)
The U.S. Geological Survey (USGS) National Geospatial Program is scanning published USGS 1:250,000-scale and larger topographic maps printed between 1884, the inception of the topographic mapping program, and 2006. The goal of this scanning, which started in 2011, is to provide a digital repository of USGS topographic maps, available to...
The Moloka‘i coral reef today, and alternatives for the future: Summary in The coral reef of south Moloka‘i, Hawai‘i—Portrait of a sediment-threatened fringing reef
Michael E. Field, Susan A. Cochran, Joshua B. Logan, Curt D. Storlazzi
2015, Scientific Investigations Report 2015-5123
From the contributions collected in this publication have emerged two important observations that have significance locally, nationally, and internationally. First, the fringing coral reef along the south coast of Moloka'i is one of the most extensive and luxuriant reefs in the eight main Hawaiian Islands. It is longer and more...
Surface-water quality in agricultural watersheds of the North Carolina Coastal Plain associated with concentrated animal feeding operations
Stephen L. Harden
2015, Scientific Investigations Report 2015-5080
The effects of concentrated animal feeding operations (CAFOs) on water quality were investigated at 54 agricultural stream sites throughout the North Carolina Coastal Plain during 2012 and 2013. Three general watershed land-use types were examined during the study, including 18 background watersheds with no active CAFOs (BK sites), 18 watersheds...
Preliminary methodology to assess the national and regional impact of U.S. wind energy development on birds and bats
James E. Diffendorfer, Julie A. Beston, Matthew D. Merrill, Jessica C. Stanton, M.D. Corum, Scott R. Loss, Wayne E. Thogmartin, Douglas H. Johnson, Richard A. Erickson, Kevin W. Heist
2015, Scientific Investigations Report 2015-5066
The U.S. Geological Survey has developed a methodology to assess the impacts of wind energy development on wildlife; it is a probabilistic, quantitative assessment methodology that can communicate to decision makers and the public the magnitude of these effects on species populations. The methodology is currently applicable to birds and...
Effects of simple acid leaching of crushed and powdered geological materials on high-precision Pb isotope analyses
Erin Todd, Andreas Stracke, Erik Scherer
2015, Geochemistry, Geophysics, Geosystems (16) 2276-2302
We present new results of simple acid leaching experiments on the Pb isotope composition of USGS standard reference material powders and on ocean island basalt whole rock splits and powders. Rock samples were leached with cold 6 N HCl in an ultrasonic bath, then on a hot plate, and washed with ultrapure...
Activity-specific ecological niche models for planning reintroductions of California condors (Gymnogyps californianus)
Jesse D'Elia, Susan M. Haig, Matthew J. Johnson, Bruce G. Marcot, Richard Young
2015, Biological Conservation (184) 90-99
Ecological niche models can be a useful tool to identify candidate reintroduction sites for endangered species but have been infrequently used for this purpose. In this paper, we (1) develop activity-specific ecological niche models (nesting, roosting, and feeding) for the critically endangered California condor (Gymnogyps californianus) to aid in reintroduction...
Projected changes in diverse ecosystems from climate warming and biophysical drivers in northwest Alaska
Mark Torre Jorgenson, Bruce G. Marcot, David K. Swanson, Janet C. Jorgenson, Anthony R. DeGange
2015, Climatic Change (130) 131-144
Climate warming affects arctic and boreal ecosystems by interacting with numerous biophysical factors across heterogeneous landscapes. To assess potential effects of warming on diverse local-scale ecosystems (ecotypes) across northwest Alaska, we compiled data on historical areal changes over the last 25–50 years. Based on historical rates of change relative to time...
Map projections and reference systems
Miljenko Lapaine, E. Lynn Usery
B. Rystedt, F. Ormeling, editor(s)
2015, Book chapter, International map year 2015: The world of maps
No abstract available....
The 2014 Mw6.1 South Napa Earthquake: A unilateral rupture with shallow asperity and rapid afterslip
Shengji Wei, Sylvain Barbot, Robert Graves, James J. Lienkaemper, Teng Wang, Kenneth W. Hudnut, Yuning Fu, Don Helmberger
2015, Seismological Research Letters (86) 344-354
The Mw6.1 South Napa earthquake occurred near Napa, California on August 24, 2014 (UTC), and was the largest inland earthquake in Northern California since the 1989 Mw6.9 Loma Prieta earthquake. The first report of the earthquake from the Northern California Earthquake Data Center (NCEDC) indicates a hypocentral depth of 11.0km...
Stratigraphic reconnaissance of the Middle Jurassic Red Glacier Formation, Tuxedni Group, at Red Glacier, Cook Inlet, Alaska
David L. LePain, Richard G. Stanley
2015, Report
The Alaska Division of Geological & Geophysical Surveys (DGGS) and U.S. Geological Survey (USGS) are implementing ongoing programs to characterize the petroleum potential of Cook Inlet basin. Since 2009 this program has included work on the Mesozoic stratigraphy of lower Cook Inlet, including the Middle Jurassic Tuxedni Group between Tuxedni...
Reconnaissance stratigraphic studies in the Susitna basin, Alaska, during the 2014 field season
David L. LePain, Richard G. Stanley, Nina T. Harun, Kenneth P. Helmold, Rebekah Tsigonis
2015, Report
The Susitna basin is a poorly-understood Cenozoic successor basin immediately north of Cook Inlet in south-central Alaska (Kirschner, 1994). The basin is bounded by the Castle Mountain fault and Cook Inlet basin on the south, the Talkeetna Mountains on the east, the Alaska Range on the north, and the Alaska–Aleutian...
Structured decision making for management of warm-water habitat for manatees. Final report to U.S. Fish and Wildlife Service
Michael Kosempa, Julien Martin, Fred A. Johnson, Ron Mezich, Brad Stith, Charles J. Deutsch, Michelle Masi, Holly H. Edwards
2015, Report
Status and trends of the Lake Huron offshore demersal fish community, 1976-2012
Edward F. Roseman, Stephen C. Riley, Steve A. Farha, Bryan M. Maitland, Taaja R. Tucker, Stacy A. Provo, Matthew W. McLean
2015, Report
The USGS Great Lakes Science Center has conducted trawl surveys to assess annual changes in the offshore demersal fish community of Lake Huron since 1973. Sample sites include five ports in U.S. waters with less frequent sampling near Goderich, Ontario. The 2012 fall bottom trawl survey was carried out between...
Geomorphology, active tectonics, and landscape evolution in the Mid-Atlantic region
Frank J. Pazzaglia, Mark W. Carter, Claudio Berti, Ronald C. Counts, Gregory S. Hancock, David Harbor, Richard W. Harrison, Matthew J. Heller, Shannon A. Mahan, Helen Malenda, Ryan McKeon, Michelle S. Nelson, Phillip Prince, Tammy M. Rittenour, James Spotilla, G. Richard Whittecar
2015, Book chapter, GSA Field Guides
In 2014, the geomorphology community marked the 125th birthday of one of its most influential papers, “The Rivers and Valleys of Pennsylvania” by William Morris Davis. Inspired by Davis’s work, the Appalachian landscape rapidly became fertile ground for the development and testing of several grand landscape evolution paradigms, culminating with...
Evaluation of perchlorate sources in the Rialto-Colton and Chino California subbasins using chlorine and oxygen isotope ratio analysis
Paul B. Hatzinger, J.K. Bohlke, John A. Izbicki, Nicholas F. Teague, Neil C. Sturchio
2015, Report
Perchlorate (ClO4-) in groundwater can be from synthetic or natural sources, the latter of which include both historical application of imported nitrate fertilizers from the Atacama Desert of Chile and naturally deposited ClO4- that forms atmospherically and accumulates in arid regions such as the southwestern US. The objective of this...
Species conservation profile of the smallmouth bass micropterus dolomieu
Shannon K. Brewer
Michael D. Tringali, James M. Long, Timothy W. Birdsong, Michael S. Allen, editor(s)
2015, Book chapter, Black bass diversity: Multidisciplinary science for conservation
No abstract available...
Wyoming Basin Rapid Ecoregional Assessment
Natasha B. Carr, Cynthia P. Melcher, editor(s)
2015, Open-File Report 2015-1155
The Wyoming Basin Rapid Ecoregional Assessment was conducted in partnership with the Bureau of Land Management (BLM). The overall goals of the BLM Rapid Ecoregional Assessments (REAs) are to identify important ecosystems and wildlife habitats at broad spatial scales; identify where these resources are at risk from Change Agents, including...
Demographic rates and population viability of black bears in Louisiana
Jared S. Laufenberg, Joseph D. Clark, Michael J. Hooker, Carrie L. Lowe, Kaitlin C. O’Connell-Goode, Jesse C. Troxler, Maria M. Davidson, Michael J. Chamberlain, Richard B. Chandler
2015, Wildlife Monographs (194) 1-37
The Louisiana black bear (Ursus americanus luteolus) was reduced to a few small, fragmented, and isolated subpopulations in the Lower Mississippi Alluvial Valley by the mid-twentieth century resulting from loss and fragmentation of habitat. In 1992, the United States Fish and Wildlife Service (USFWS) granted the Louisiana black bear threatened...
Collapse risk of buildings in the Pacific Northwest region due to subduction earthquakes
Meera Raghunandan, Abbie B. Liel, Nico Luco
2015, Earthquake Spectra (31) 2087-2115
Subduction earthquakes similar to the 2011 Japan and 2010 Chile events will occur in the future in the Cascadia subduction zone in the Pacific Northwest. In this paper, nonlinear dynamic analyses are carried out on 24 buildings designed according to outdated and modern building codes for the cities of Seattle,...
Dating base flow in streams using dissolved gases and diurnal temperature changes
Ward E. Sanford, Gerolamo C. Casile, Karl B. Haase
2015, Water Resources Research (51) 9790-9803
A method is presented for using dissolved CFCs or SF6 to estimate the apparent age of stream base flow by indirectly estimating the mean concentration of the tracer in the inflowing groundwater. The mean value is estimated simultaneously with the mean residence times of the gas and water in the...
The Swinomish Indian Tribal Community prepares for climate change impacts
Eric E. Grossman, Jamie Donatuto, Sarah Grossman, Larry W. Campbell
2015, Report
From changes in traditional foods to concerns of displacement from rising seas, this coastal community in the Pacific Northwest is assessing potential impacts to make decisions for their future....
A guide to the use of distance sampling to estimate abundance of Karner blue butterflies
Ralph Grundel
2015, Report
This guide is intended to describe the use of distance sampling as a method for evaluating the abundance of Karner blue butterflies at a location. Other methods for evaluating abundance exist, including mark-release-recapture and index counts derived from Pollard-Yates surveys, for example. Although this guide is not intended to be...
Practitioners' views of science needs for the Great Lakes coastal ecosystem
Victoria Pebbles, Elizabath C. Lillard, Paul W. Seelbach, Lisa Reynolds Fogarty
2015, Report
In 2014, the U.S. Geological Survey Great Lake Science Center (USGS-GLSC) and the USGS-Michigan Water Science Center partnered with the Great Lakes Commission (GLC) to conduct a series of four workshops with coastal practitioners and managers across the Great Lakes basin to highlight the need for, and get input on,...
Management of aspen in a changing environment
Douglas J. Shinneman, Anne S. Halford, Cheri Howell, Kevin Krasnow, Eva K. Strand
Jeanne Chambers, editor(s)
2015, Report
Aspen communities are biologically rich and ecologically valuable, yet they face myriad threats, including changing climate, altered fire regimes, and excessive browsing by domestic and wild ungulates. Recognizing the different types of aspen communities that occur in the Great Basin, and being able to distinguish between seral and stable aspen stands,...
