Hazards affecting grizzly bear survival in the Greater Yellowstone Ecosystem
Charles C. Schwartz, Mark A. Haroldson, Gary C. White
2010, Journal of Wildlife Management (74) 654-667
During the past 2 decades, the grizzly bear (Ursus arctos) population in the Greater Yellowstone Ecosystem (GYE) has increased in numbers and expanded its range. Early efforts to model grizzly bear mortality were principally focused within the United States Fish and Wildlife Service Grizzly Bear Recovery Zone, which currently...
Permeability of the continental crust: Dynamic variations inferred from seismicity and metamorphism
Steven E. Ingebritsen, C. E. Manning
2010, Geofluids (10) 193-205
The variation of permeability with depth can be probed indirectly by various means, including hydrologic models that use geothermal data as constraints and the progress of metamorphic reactions driven by fluid flow. Geothermal and metamorphic data combine to indicate that mean permeability (k) of tectonically active continental crust decreases with...
Secular variation in economic geology
Richard J. Goldfarb, Dwight Bradley, David L Leach
2010, Economic Geology (105) 459-465
The temporal pattern of ore deposits on a constantly evolving Earth reflects the complex interplay between the evolving global tectonic regime, episodic mantle plume events, overall changes in global heat flow, atmospheric and oceanic redox states, and even singular impact and glaciation events. Within...
Effect of diet on fecal and urinary estrogenic activity
H.A. Tucker, K.F. Knowlton, Michael T. Meyer, W.O Khunjar, N.G. Love
2010, Journal of Dairy Science (93) 2088-2094
The United States Environmental Protection Agency has identified estrogens from animal feeding operations as a major environmental concern, but few data are available to quantify the excretion of estrogenic compounds by dairy cattle. The objectives of this study were to quantify variation in estrogenic activity in feces and urine due to increased...
Revisions of rump fat and body scoring indices for deer, elk, and moose
Rachel C. Cook, John G. Cook, Thomas R. Stephenson, Woodrow L. Myers, Scott M. Mccorquodale, David J. Vales, Larry L. Irwin, P. Briggs Hall, Rocky D. Spencer, Shannon L. Murphie, Kathryn A. Schoenecker, Patrick J. Miller
2010, Journal of Wildlife Diseases (74) 880-896
Because they do not require sacrificing animals, body condition scores (BCS), thickness of rump fat (MAXFAT), and other similar predictors of body fat have advanced estimating nutritional condition of ungulates and their use has proliferated in North America in the last decade. However, initial testing of these predictors was too...
Supply of and demand for selected energy related mineral commodities
Scott F. Sibley
2010, Conference Paper, Critical elements for new energy technologies: an MIT Energy Initiative Workshop report
In this report, subjects discussed include components of mineral supply, production, and consumption data, and information on selected mineral commodities in which the Energy Critical Elements Study Group has an interest, and U.S. Geological Survey (USGS) recycling studies, with some results of these studies....
Flood of April and May 2008 in Northern Maine
Pamela J. Lombard
2010, Scientific Investigations Report 2010-5003
Severe flooding occurred in Aroostook and Penobscot Counties in northern Maine between April 28 and May 1, 2008, and was most extreme in the town of Fort Kent. Peak streamflows in northern Aroostook County were the result of a persistent heavy snowpack that caused high streamflows when it quickly melted...
Techniques for Estimating the Magnitude and Frequency of Peak Flows on Small Streams in Minnesota Based on Data through Water Year 2005
David L. Lorenz, Christopher A. Sanocki, Matthew J. Kocian
2010, Scientific Investigations Report 2009-5250
Knowledge of the peak flow of floods of a given recurrence interval is essential for regulation and planning of water resources and for design of bridges, culverts, and dams along Minnesota's rivers and streams. Statistical techniques are needed to estimate peak flow at ungaged sites because long-term streamflow records are...
Trends in groundwater levels in wells in the active management areas of Arizona, USA
Fred D. Tillman, Stanley A. Leake
2010, Hydrogeology Journal (18) 1515-1524
In 1980, the Arizona legislature passed the Groundwater Management Act (GMA), creating the active management areas (AMAs) to protect shared groundwater resources and to control severe overdrafts occurring in many parts of the state. With the 30-year anniversary of the GMA approaching, this article addresses the question: Have there been...
Seasonal H2O and CO2 ice cycles at the Mars Phoenix landing site: 1. Prelanding CRISM and HiRISE observations
Selby Cull, Raymond E. Arvidson, Michael T. Mellon, Sandra M. Wiseman, Roger N. Clark, Timothy N. Titus, Richard V. Morris, Patrick E. McGuire
2010, Journal of Geophysical Research E: Planets (115)
The condensation, evolution, and sublimation of seasonal water and carbon dioxide ices were characterized at the Mars Phoenix landing site from Martian northern midsummer to midspring (Ls ∼ 142° – Ls ∼ 60°) for the year prior to the Phoenix landing on 25 May 2008. Ice relative abundances and grain sizes were...
Mg isotope constraints on soil pore-fluid chemistry: Evidence from Santa Cruz, California
Edward T. Tipper, Jerome Gaillardet, Pascale Louvat, Francoise Capmas, Arthur F. White
2010, Geochimica et Cosmochimica Acta (74) 3883-3896
Mg isotope ratios (26Mg/24Mg) are reported in soil pore-fluids, rain and seawater, grass and smectite from a 90 kyr old soil, developed on an uplifted marine terrace from Santa Cruz, California. Rain water has an invariant 26Mg/24Mg ratio (expressed as δ26Mg>δ26Mg) at −0.79 ± 0.05‰, identical to seawater <span...
Long-Billed Curlew Breeding Success on Mid-Columbia River National Wildlife Refuges, South-Central Washington and North-Central Oregon, 2007-08
Jessica Stocking, Elise Elliott-Smith, Neil Holcomb, Susan M. Haig
2010, Open-File Report 2010-1089
Long-billed curlew (Numenius americanus) reproductive success was evaluated on the Mid-Columbia River National Wildlife Refuges of south-central Washington and north-central Oregon during the 2007 and 2008 breeding seasons. Additionally, we assisted the U.S. Fish and Wildlife Service in collecting information on distribution, abundance, and brood habitat for this shorebird species...
Thermal Maturity Data Used by the U.S. Geological Survey for the U.S. Gulf Coast Region Oil and Gas Assessment
Kristin O. Dennen, Peter D. Warwick, Elizabeth Chinn McDade
2010, Open-File Report 2010-1072
The U.S. Geological Survey is currently assessing the oil and natural gas resources of the U.S. Gulf of Mexico region using a total petroleum system approach. An essential part of this geologically based method is evaluating the effectiveness of potential source rocks in the petroleum system. The purpose of this...
Quality of groundwater at and near an aquifer storage and recovery site, Bexar, Atascosa, and Wilson Counties, Texas, June 2004-August 2008
Cassi L. Otero, Brian L. Petri
2010, Scientific Investigations Report 2010-5061
The U.S. Geological Survey, in cooperation with the San Antonio Water System, did a study during 2004–08 to characterize the quality of native groundwater from the Edwards aquifer and pre- and post-injection water from the Carrizo aquifer at and near an aquifer storage and recovery (ASR) site in Bexar, Atascosa,...
Field Surveys of Rare Plants on Santa Cruz Island, California, 2003-2006: Historical Records and Current Distributions
A. Kathryn McEachern, Katherine A. Chess, Ken Niessen
2010, Scientific Investigations Report 2009-5264
Santa Cruz Island is the largest of the northern Channel Islands located off the coast of California. It is owned and managed as a conservation reserve by The Nature Conservancy and the Channel Islands National Park. The island is home to nine plant taxa listed in 1997 as threatened or...
Method for Estimating Annual Atrazine Use for Counties in the Conterminous United States, 1992-2007
Gail P. Thelin, Wesley W. Stone
2010, Scientific Investigations Report 2010-5034
A method was developed to estimate annual atrazine use during 1992 to 2007 on sixteen crops and four agricultural land uses. For each year, atrazine use was estimated for all counties in the conterminous United States (except California) by combining (1) proprietary data from the Doane Marketing Research-Kynetec (DMRK) AgroTrak...
Nitrogen Loads in Groundwater Entering Back Bays and Ocean from Fire Island National Seashore, Long Island, New York
Christopher Schubert, M. Peter deVries, Anne J. Finch
2010, Open-File Report 2010-1081
Fire Island is a barrier island that lies south of central Long Island, N.Y. It is about 60 km (37 mi) long and 0.5 km (1/4 mi) wide and is bounded by the Great South Bay, Narrow Bay, and Moriches Bay estuaries to the north; by the Atlantic Ocean to...
Digital tabulation of geologic and hydrologic data from wells in the northern San Francisco Bay region, northern California
D. S. Sweetkind, E. M. Taylor
2010, Open-File Report 2010-1063
Downhole lithologic information and aquifer pumping test data are reported from 464 wells from a broad area of the northern part of the Coast Ranges in California. These data were originally published in paper form as numerous tables within three USGS Water-Supply Papers describing geology and groundwater conditions in Napa...
Potentiometric Surfaces and Water-Level Trends in the Cockfield (Upper Claiborne) and Wilcox (Lower Wilcox) Aquifers of Southern and Northeastern Arkansas, 2009
Aaron L. Pugh
2010, Scientific Investigations Report 2010-5014
Eocene-age sand beds near the base of the Cockfield Formation of Claiborne Group constitute the aquifer known locally as the Cockfield aquifer. Upper-Paleocene age sand beds within the lower parts of the Wilcox Group constitute the aquifer known locally as the Wilcox aquifer. In 2005, reported water withdrawals from the...
Water-the Nation's Fundamental Climate Issue A White Paper on the U.S. Geological Survey Role and Capabilities
Harry F. Lins, Robert M. Hirsch, Julie Kiang
2010, Circular 1347
Of all the potential threats posed by climatic variability and change, those associated with water resources are arguably the most consequential for both society and the environment (Waggoner, 1990). Climatic effects on agriculture, aquatic ecosystems, energy, and industry are strongly influenced by climatic effects on water. Thus, understanding changes in...
Advances in estimation methods of vegetation water content based on optical remote sensing techniques
Jiahua Zhang, Yun Xu, Fengmei Yao, PeiJuan Wang, WenJuan Guo, Li Li, Limin Yang
2010, Science China Technological Sciences (53) 1159-1167
Quantitative estimation of vegetation water content (VWC) using optical remote sensing techniques is helpful in forest fire assessment, agricultural drought monitoring and crop yield estimation. This paper reviews the research advances of VWC retrieval using spectral reflectance, spectral water index and radiative transfer model (RTM) methods. It also evaluates the...
Seasonal and Spatial Distribution of Freshwater Flow and Salinity in the Ten Thousand Islands Estuary, Florida, 2007-2009
Lars E. Soderqvist, Eduardo Patino
2010, Data Series 501
The watershed of the Ten Thousand Islands (TTI) estuary has been substantially altered through the construction of canals and roads for the Southern Golden Gate Estates (SGGE), Barron River Canal, and U.S. 41 (Tamiami Trail). Two restoration projects designed to improve freshwater delivery to the estuary are the Picayune Strand...
Groundwater Quality in the Central Eastside San Joaquin Valley, California
Kenneth Belitz, Matthew K. Landon
2010, Fact Sheet 2010-3001
The Central Eastside study unit is located in California's San Joaquin Valley. The 1,695 square mile study unit includes three groundwater subbasins: Modesto, Turlock, and Merced (California Department of Water Resources, 2003). The primary water-bearing units consist of discontinuous lenses of gravel, sand, silt, and clay, which are derived largely...
Mercury assessment and monitoring protocol for the Bear Creek Watershed, Colusa County, California
Thomas H. Suchanek, Roger L. Hothem, James J. Rytuba, Julie L. Yee
2010, Scientific Investigations Report 2010-5018
This report summarizes the known information on the occurrence and distribution of mercury (Hg) in physical/chemical and biological matrices within the Bear Creek watershed. Based on these data, a matrix-specific monitoring protocol for the evaluation of the effectiveness of activities designed to remediate Hg contamination in the Bear Creek watershed...
U.S. Geological Survey (USGS) Earth Resources Observation and Science (EROS) Center-Fiscal Year 2009 Annual Report
Janice S. Nelson
2010, Open-File Report 2010-1060
The Earth Resources Observation and Science (EROS) Center is a U.S. Geological Survey (USGS) facility focused on providing science and imagery to better understand our Earth. As part of the USGS Geography Discipline, EROS contributes to the Land Remote Sensing (LRS) Program, the Geographic Analysis and Monitoring (GAM) Program, and...
