Publications
These publications showcase the significant science conducted in our Science Centers.
Filter Total Items: 16780
Stream vulnerability to widespread and emergent stressors: a focus on unconventional oil and gas
Multiple stressors threaten stream physical and biological quality, including elevated nutrients and other contaminants, riparian and in-stream habitat degradation and altered natural flow regime. Unconventional oil and gas (UOG) development is one emerging stressor that spans the U.S. UOG development could alter stream sedimentation, riparian extent and composition, in-stream flow, and water qual
Authors
Sally Entrekin, Kelly O. Maloney, Katherine E. Kapo, Annika W. Walters, Michelle A. Evans-White, Kenneth M. Klemow
Lead scrap use and trade patterns in the United States, 1995-2012
Since 1995, domestic production of lead has increasingly shifted from primary mining and smelting to the recovery of lead-bearing scrap by the secondary lead industry, which accounted for 91 percent of U.S. lead production in 2012. Increasingly stringent environmental regulations for lead emissions in the United States have contributed to the closure of primary lead refineries and the consolidatio
Authors
David R. Wilburn
Individual heterogeneity in growth and age at sexual maturity: A gamma process analysis of capture–mark–recapture data
Knowledge of organisms’ growth rates and ages at sexual maturity is important for conservation efforts and a wide variety of studies in ecology and evolutionary biology. However, these life history parameters may be difficult to obtain from natural populations: individuals encountered may be of unknown age, information on age at sexual maturity may be uncertain and interval-censored, and growth da
Authors
William A. Link, Kyle Miller Hesed
Hydro-bio-geomechanical properties of hydrate-bearing sediments from Nankai Trough
Natural hydrate-bearing sediments from the Nankai Trough, offshore Japan, were studied using the Pressure Core Characterization Tools (PCCTs) to obtain geomechanical, hydrological, electrical, and biological properties under in situ pressure, temperature, and restored effective stress conditions. Measurement results, combined with index-property data and analytical physics-based models, provide un
Authors
J.C. Santamarina, Shifeng Dai, M. Terzariol, Jeonghwan Jang, William F. Waite, William J. Winters, J. Nagao, J. Yoneda, Y. Konno, T. Fujii, K. Suzuki
Metagenomic analysis of planktonic microbial consortia from a non-tidal urban-impacted segment of James River
Knowledge of the diversity and ecological function of the microbial consortia of James River in Virginia, USA, is essential to developing a more complete understanding of the ecology of this model river system. Metagenomic analysis of James River's planktonic microbial community was performed for the first time using an unamplified genomic library and a 16S rDNA amplicon library prepared and seque
Authors
Bonnie L. Brown, Rebecca V LePrell, Rima B Franklin, Maria C Rivera, Francine M Cabral, Hugh L Eaves, Vicki Gaqrdiakos, Kevin P Keegan, Tim L. King
Importance of the colmation layer in the transport and removal of cyanobacteria, viruses, and dissolved organic carbon during natural lake-bank filtration
This study focused on the importance of the colmation layer in the removal of cyanobacteria, viruses, and dissolved organic carbon (DOC) during natural bank filtration. Injection-and-recovery studies were performed at two shallow (0.5 m deep), sandy, near-shore sites at the southern end of Ashumet Pond, a waste-impacted, kettle pond on Cape Cod, MA, that is subject to periodic blooms of cyanobacte
Authors
Ronald W. Harvey, David W. Metge, Denis R. LeBlanc, Jennifer C. Underwood, George R. Aiken, Kenna D. Butler, Timothy D. McCobb, Jay Jasperse
Summary of the Ahankashan Area of Interest
This report summarizes and interprets results of the work in the Ahankashan Area of Interest in northwestern Afghanistan and four study areas—the Ahankashan Prospect Area, Syahsang-Kushkak, Taghab-Soni, and Zakak-e ‘Olya—delineated for their potential undiscovered mineral occurrences with specific emphasis on porphyry copper and related occurrence types. The Area of Interest is underlain by rocks
Authors
Lawrence J. Drew, David M. Sutphin, John C. Mars, Anya K. Bogdanow
Case 3693 Cryptodacus Hendel, 1914 (Insecta: Diptera: Tephritidae): Proposed suppression of Cryptodacus Gundlach, 1862 (Reptilia, Serpentes, Colubridae)
The purpose of this application, under Article 23.9.3, is to conserve current usage of the well-established genus-group name Cryptodacus Hendel, 1914 for a genus of Neotropical fruit flies by suppression of the earlier, unused name Cryptodacus Gundlach, 1862, currently a junior synonym of Arrhyton Günther, 1858, a genus of snakes, under the plenary power of the Commission, in the interest of nomen
Authors
Allen L. Norrbom, Roy W. McDiarmid, Xiao-Lin Chen, King J. David, Marc De Meyer, Amnon Freidberg, Ho-Yeon Han, David Hancock, Gary J. Steck, Frank R. Thompson, Ian M. White, Roberto A. Zucchi
A Crosswalk of Mineral Commodity End Uses and North American Industry Classification System (NAICS) codes
This crosswalk is based on the premise that there is a connection between the way mineral commodities are used and how this use is reflected in the economy. Raw mineral commodities are the basic materials from which goods, finished products, or intermediate materials are manufactured or made. Mineral commodities are vital to the development of the U.S. economy and they impact nearly every industri
Authors
James J. Barry, Grecia R. Matos, W. David Menzie
A case study demonstrating analysis of stormflows, concentrations, and loads of nutrients in highway runoff and swale discharge with the Stochastic Empirical Loading and Dilution Model (SELDM)
Decisionmakers need information about the quality and quantity of stormwater runoff, the risk for adverse effects of runoff on receiving waters, and the potential effectiveness of mitigation measures to reduce these risks. The Stochastic Empirical Loading and Dilution Model (SELDM) uses Monte Carlo methods to generate stormflows, concentrations, and loads from a highway site and an upstream basin
Authors
Gregory E. Granato, Susan C. Jones
Hydrogeology and simulation of groundwater flow in fractured-rock aquifers of the Piedmont and Blue Ridge Physiographic Provinces, Bedford County, Virginia
An annual groundwater budget was computed as part of a hydrogeologic characterization and monitoring effort of fractured-rock aquifers in Bedford County, Virginia, a growing 764-square-mile (mi2) rural area between the cities of Roanoke and Lynchburg, Virginia. Data collection in Bedford County began in the 1930s when continuous stream gages were installed on Goose Creek and Big Otter River, the t
Authors
Kurt J. McCoy, Bradley A. White, Richard M. Yager, George E. Harlow
Sea-floor morphology and sedimentary environments in southern Narragansett Bay, Rhode Island
Multibeam echosounder data collected by the National Oceanic and Atmospheric Administration along with sediment samples and still and video photography of the sea floor collected by the U.S. Geological Survey were used to interpret sea-floor features and sedimentary environments in southern Narragansett Bay, Rhode Island, as part of a long-term effort to map the sea floor along the northeastern co
Authors
Katherine Y. McMullen, Lawrence J. Poppe, Dann S. Blackwood, Matthew J. Nardi, Matthew A. Andring