The pallid sturgeon: Scientific investigations help understand recovery needs
Aaron J. DeLonay
2010, Fact Sheet 2010-3024
Understanding of the pallid sturgeon (Scaphirhynchus albus) has increased significantly since the species was listed as endangered over two decades ago. Since 2005, scientists at the U.S. Geological Survey (USGS) Columbia Environmental Research Center (CERC) have been engaged in an interdisciplinary research program in cooperation with the U.S. Army Corps...
Assessment of soil-gas, surface-water, and soil contamination at the Installation Railhead, Fort Gordon, Georgia, 2008-2009
James Landmeyer, Larry G. Harrelson, W. Hagan Ratliff, John B. Wellborn
2010, Open-File Report 2010-1054
The U.S. Geological Survey, in cooperation with the U.S. Department of the Army Environmental and Natural Resources Management Office of the U.S. Army Signal Center and Fort Gordon, assessed soil gas, surface water, and soil for contaminants at the Installation Railhead (IR) at Fort Gordon, Georgia, from October 2008 to...
Documentation for initial seismic hazard maps for Haiti
Arthur Frankel, Stephen Harmsen, Charles Mueller, Eric Calais, Jennifer Haase
2010, Open-File Report 2010-1067
In response to the urgent need for earthquake-hazard information after the tragic disaster caused by the moment magnitude (M) 7.0 January 12, 2010, earthquake, we have constructed initial probabilistic seismic hazard maps for Haiti. These maps are based on the current information we have on fault slip rates and historical...
Reconnaissance geologic map of the Hayfork 15' quadrangle, Trinity County, California
William P. Irwin
2010, Scientific Investigations Map 3119
The Hayfork 15' quadrangle is located just west of the Weaverville 15' quadrangle in the southern part of the Klamath Mountains geologic province of northern California. It spans parts of six generally north-northwest-trending tectonostratigraphic terranes that are, from east to west, the Eastern Klamath, Central Metamorphic, North Fork, Eastern Hayfork,...
National GAP Conference 2007-Discussion Groups Report
Joan M. Ratz, Berton Lee Lamb
2010, Open-File Report 2010-1026
We led two discussion groups during the 2007 National GAP Conference. These discussion groups provided information to help develop a survey of National Gap Analysis Program (GAP) data users. One group discussed technical issues, and the second group discussed the use of GAP data for decisionmaking. Themes emerging from the...
Studies of Climate Change in the Yukon River Basin: Connecting Community and Science Through a Unique Partnership
Paul F. Schuster, Karonhiakta’tie Byran Maracle
2010, Fact Sheet 2010-3020
An exciting new partnership between the U.S. Geological Survey (USGS) and the Yukon River Inter-Tribal Watershed Council (YRITWC) is yielding critical data for the assessment of climate change effects in the Yukon River Basin. The foundation of this partnership is a shared interest in the current and future water quality...
Fate of estrogenic compounds during municipal sludge stabilization and dewatering
Edward T. Furlong, James L. Gray, David M. Quanrud, S.E. Teske, K.J. Esposito, Jeremy Marine, Wendell P. Ela, Patrick J. Phillips, Dana W. Kolpin, B. Stinson
2010, Report
This project brought together a team of experts in the fields of environmental engineering, analytical chemistry and hydrogeology, and biological assay analysis to evaluate the occurrence and fate of estrogenic compounds and the estrogenicity of biosolids derived from wastewater treatment. The primary objective of the study was to provide key...
Geophysical investigations at Hidden Dam, Raymond, California: Summary of fieldwork and data analysis
Burke J. Minsley, Bethany L. Burton, Scott Ikard, Michael H. Powers
2010, Open-File Report 2010-1013
Geophysical field investigations have been carried out at the Hidden Dam in Raymond, California for the purpose of better understanding the hydrogeology and seepage-related conditions at the site. Known seepage areas on the northwest right abutment area of the downstream side of the dam are documented by Cedergren. Subsequent to...
Theme section on “Mesophotic coral ecosystems: Characterization, ecology, and management”
Lara M. Hinderstein, John C.A. Marr, Felix A. Martinez, Michael J. Dowgiallo, Richard L. Puglise, R. L. Pyle, David G Zawada, R. Appeldoorn
2010, Coral Reefs (29) 247-251
Mesophotic coral ecosystems (MCEs) are characterized by the presence of light-dependent corals and associated communities that are typically found at depths ranging from 30 to 40 m and extending to over 150 m in tropical and subtropical regions. The dominant communities providing structural habitat in the mesophotic zone can be comprised of...
Dissolution-reprecipitation of igneous zircon in mid-ocean ridge gabbro, Atlantis Bank, Southwest Indian Ridge
J. Schwartz, Barbara E John, Michael J. Cheadle, Joseph L. Wooden, F. Mazdab, Susan Swapp, Craig B. Grimes
2010, Chemical Geology (274)-68
Zircons recovered from oceanic gabbro exposed on Atlantis Bank, Southwest Indian Ridge, typically display oscillatory and sector zoning consistent with igneous crystallization from mafic magmas. In one rock (of twenty investigated), weak-oscillatory-zonation patterns are overprinted by secondary textural features characterized by mottled, convoluted and wavy internal zonation patterns that are...
Ferromanganese crusts as archives of deep water Cd isotope compositions
T. J. Horner, M. Schonbachler, M. Rehkämper, S.G. Nielsen, H. Williams, A. N. Halliday, Z. George Xue, James R. Hein
2010, Geochemistry, Geophysics, Geosystems (11)
The geochemistry of Cd in seawater has attracted significant attention owing to the nutrient-like properties of this element. Recent culturing studies have demonstrated that Cd is a biologically important trace metal that plays a role in the sequestration of inorganic carbon. This conclusion is supported by recent isotope data for...
Multiple phases of basin formation along the Stateline fault system in the Pahrump and Mesquite Valleys, Nevada and California
Daniel S. Scheirer, Donald S. Sweetkind, John J. Miller
2010, Geosphere (6) 93-129
Two phases of deformation are needed to describe the Cenozoic tectonic evolution of the Pahrump and Mesquite basins in the southern Great Basin and eastern Mojave Desert, United States. By interpreting seismic reflection and gravity observations along with bedrock and surficial mapping, we infer an extensional phase of basin formation...
Distribution and trends in reference evapotranspiration in the North China plain
Z. W. Song, Hailin Zhang, Richard L. Snyder, Frank Anderson, F. Chen
2010, Journal of Irrigation and Drainage Engineering (136) 240-247
The distribution and trends in reference evapotranspiration (ET(o)) are extremely important to water resources planning for agriculture, and it is widely believed that rates of ET(o) will increase with global warming. This is a big concern in China, where water deficits are common in the North China Plain (NCP). In...
Reconnaissance geochronology of tuffs in the Miocene Barstow Formation: implications for basin evolution and tectonics in the central Mojave Desert
D. M. Miller, S.R. Leslie, John W. Hillhouse, J. L. Wooden, J.A. Vazquez, R. E. Reynolds
2010, Book, Overboard in the Mojave: 20 million years of lakes and wetlands
Early to middle Miocene lacustrine strata of the Barstow Formation are well dated in just a few places, limiting our ability to infer basin evolution and regional tectonics. At the type section in the Mud Hills, previous studies have shown that the lacustrine interval of the Barstow Formation is...
Effects of cadmium, estradiol-17beta and their interaction on gonadal condition and metamorphosis of male and female African clawed frog, Xenopus laevis
Bibek Sharma, Reynaldo Patino
2010, Chemosphere (79) 499-505
To assess interaction effects between cadmium (Cd, a putative xenoestrogen) and estradiol-17beta (E(2)) on sex differentiation and metamorphosis, Xenopus laevis were exposed to solvent-control (0.005% ethanol), Cd (10microgL(-1)), E(2) (1microgL(-1)), or Cd and E(2) (Cd+E(2)) in FETAX medium from fertilization to 75d postfertilization. Each treatment was applied to four aquaria,...
Reply to “Comment on ‘Is There a Basis for Preferring Characteristic Earthquakes over a Gutenberg–Richter Distribution in Probabilistic Earthquake Forecasting?’ by Tom Parsons and Eric L. Geist” by Jens-Uwe Klügel
Thomas E. Parsons, Eric L. Geist
2010, Bulletin of the Seismological Society of America (100) 898-899
The focus of Parsons and Geist (2009) was to test whether the key observational data used in earthquake forecasting necessitate a characteristic earthquake rupture model. The point of our article was not to suggest that a specific form of the Gutenberg–Richter earthquake distribution is a perfect representation of reality. The...
Organic petrology of subbituminous carbonaceous shale samples from Chalāw, Kabul Province, Afghanistan: Considerations for paleoenvironment and energy resource potential
Paul C. Hackley, John Sanfilipo, Gul Pacha Azizi, Philip A. Davis, Scott W. Starratt
2010, International Journal of Coal Geology (81) 269-280
Neogene (?) subbituminous carbonaceous shale deposits from Chalāw, Afghanistan, were investigated through organic petrology techniques and standard coal analyses to determine paleoenvironment and potential for resource utilization. The Chalāw deposit, approximately 30 km southeast of Kabul, currently is exploited for brick making and domestic heating and cooking. Three multiple-bench channel...
Intrusions and infectious disease emergence
Milton Friend
2010, One Health Newsletter (3) 1-3
No abstract available....
Oviduct modifications in foam-nesting frogs, with emphasis on the genus Leptodactylus (Amphibia, Leptodactylidae)
Andrew I. Furness, Roy W. McDiarmid, W. Ronald Heyer, George R. Zug
2010, South American Journal of Herpetology (5) 13-29
Various species of frogs produce foam nests that hold their eggs during development. We examined the external morphology and histology of structures associated with foam nest production in frogs of the genus Leptodactylus and a few other taxa. We found that the posterior convolutions of the oviducts in all mature female foam-nesting...
Measuring bulrush culm relationships to estimate plant biomass within a southern California treatment wetland
Joan S. Daniels, Brian S. Cade, James J. Sartoris
2010, Wetlands (30) 231-239
Assessment of emergent vegetation biomass can be time consuming and labor intensive. To establish a less onerous, yet accurate method, for determining emergent plant biomass than by direct measurements we collected vegetation data over a six-year period and modeled biomass using easily obtained variables: culm (stem) diameter, culm height and...
Stable isotopes differentiate bottlenose dolphins off west-central Florida
Nélio B. Barros, P. H. Ostrom, Craig A. Stricker, R.S. Wells
2010, Marine Mammal Science (26) 324-336
Distinguishing discrete population units among continuously distributed coastal small cetaceans is challenging and crucial to conservation. We evaluated the utility of stable isotopes in assessing group membership in bottlenose dolphins (Tursiops truncatus) off west-central Florida by analyzing carbon, nitrogen, and sulfur isotope values (δ13C, δ15N, and δ34S) of tooth collagen...
Viral hemorrhagic septicemia virus (VHSV IVb) risk factors and association measures derived by expert panel
VHSV Expert Panel And Working Group
2010, Preventive Veterinary Medicine 128-139
Viral hemorrhagic septicemia virus (VHSV) is an OIE-listed pathogen of fish, recently expanding in known host and geographic range in North America. Through a group process designed for subjective probability assessment, an international panel of fish health experts identified and weighted risk factors perceived important to the emergence and spread...
Hydrology, water quality, and causes of changes in vegetation in the vicinity of the Spring Bluff Nature Preserve, Lake County, Illinois, May 2007–August 2008
Robert T. Kay, James J. Miner, Debbie A. Maurer, Charles W. Knight
2010, Scientific Investigations Report 2009-5237
Agriculture and urbanization have altered the hydrology and water quality of the coastal wetland complex along the shore of Lake Michigan at the Spring Bluff Nature Preserve and Illinois Beach State Park in northeastern Lake County, Ill., and the adjacent Chiwaukee Prairie State Natural Area in southeastern Wisconsin. Culverts, roads,...
Climate-induced tree mortality: Earth system consequences
Henry D. Adams, Alison K. Macalady, David D. Breshears, Craig D. Allen, Nathan L. Stephenson, Scott Saleska, Travis E. Huxman, Nathan G. McDowell
2010, Eos, Transactions, American Geophysical Union (91) 153-154
One of the greatest uncertainties in global environmental change is predicting changes in feedbacks between the biosphere and the Earth system. Terrestrial ecosystems and, in particular, forests exert strong controls on the global carbon cycle and influence regional hydrology and climatology directly through water and surface energy budgets [Bonan, 2008;...
Using generalized linear models to estimate selectivity from short-term recoveries of tagged red drum Sciaenops ocellatus: Effects of gear, fate, and regulation period
Nathan M. Bacheler, Joseph E. Hightower, Summer M. Burdick, Lee M. Paramore, Jeffrey A. Buckel, Kenneth H. Pollock
2010, Fisheries Research (102) 266-275
Estimating the selectivity patterns of various fishing gears is a critical component of fisheries stock assessment due to the difficulty in obtaining representative samples from most gears. We used short-term recoveries (n = 3587) of tagged red drum Sciaenops ocellatus to directly estimate age- and length-based selectivity patterns using generalized linear models. The most...
