Publications
These publications showcase the significant science conducted in our Science Centers.
Filter Total Items: 16782
Experimental investigation of false positive errors in auditory species occurrence surveys
False positive errors are a significant component of many ecological data sets, which in combination with false negative errors, can lead to severe biases in conclusions about ecological systems. We present results of a field experiment where observers recorded observations for known combinations of electronically broadcast calling anurans under conditions mimicking field surveys to determine spec
Authors
David A.W. Miller, Linda A. Weir, Brett T. McClintock, Evan H. Campbell Grant, Larissa L. Bailey, Theodore R. Simons
Dam removal increases American eel abundance in distant headwater streams
American eel Anguilla rostrata abundances have undergone significant declines over the last 50 years, and migration barriers have been recognized as a contributing cause. We evaluated eel abundances in headwater streams of Shenandoah National Park, Virginia, to compare sites before and after the removal of a large downstream dam in 2004 (Embrey Dam, Rappahannock River). Eel abundances in headwater
Authors
Nathaniel P. Hitt, Sheila Eyler, John E. B. Wofford
Biological assessment and streambed-sediment chemistry of streams in the Indianapolis metropolitan area, Indiana, 2003–2008
During 2003–2008, the U.S. Geological Survey sampled 13 sites in the Indianapolis metropolitan area in Indiana for benthic invertebrates, fish communities, and streambed-sediment chemistry. Data from seven White River sites and six tributary sites complement surface-water chemistry data collected by the Indianapolis Department of Public Works. The information is being used to assess changes in wat
Authors
David C. Voelker
Heterogeneous redox conditions, arsenic mobility, and groundwater flow in a fractured-rock aquifer near a waste repository site in New Hampshire, USA
Anthropogenic sources of carbon from landfill or waste leachate can promote reductive dissolution of in situ arsenic (As) and enhance the mobility of As in groundwater. Groundwater from residential-supply wells in a fractured crystalline-rock aquifer adjacent to a Superfund site in Raymond, New Hampshire, USA, showed evidence of locally enhanced As mobilization in relatively reducing (mixed oxic-a
Authors
Philip T. Harte, Joseph D. Ayotte, Andrew Hoffman, Kinga M. Revesz, Marcel Belaval, Steven Lamb, J.K. Böhlke
Diversity of active aerobic methanotrophs along depth profiles of arctic and subarctic lake water column and sediments
Methane (CH4) emitted from high-latitude lakes accounts for 2–6% of the global atmospheric CH4 budget. Methanotrophs in lake sediments and water columns mitigate the amount of CH4 that enters the atmosphere, yet their identity and activity in arctic and subarctic lakes are poorly understood. We used stable isotope probing (SIP), quantitative PCR (Q-PCR), pyrosequencing and enrichment cultures to d
Authors
Ruo He, Matthew J. Wooller, John W. Pohlman, John Quensen, James M. Tiedje, Mary Beth Leigh
Evaluating changes in matrix based, recovery-adjusted concentrations in paired data for pesticides in groundwater
Pesticide concentration data for waters from selected carbonate-rock aquifers in agricultural areas of Pennsylvania were collected in 1993–2009 for occurrence and distribution assessments. A set of 30 wells was visited once in 1993–1995 and again in 2008–2009 to assess concentration changes. The data include censored matched pairs (nondetections of a compound in one or both samples of a pair). A p
Authors
Tammy M. Zimmerman, Kevin J. Breen
Materials flow of indium in the United States in 2008 and 2009
Indium is a material that has many applications. It is used by anyone who watches television or views a computer screen. It is found in solar energy arrays and in soldering applications that are required to be lead free. In 2009, about 550 metric tons (t) of indium metal was produced from primary sources world-wide; it was estimated that the United States consumed about 110 t of indium metal (20 p
Authors
Thomas G. Goonan
Chronostratigraphic framework for the IODP Expedition 318 cores from the Wilkes Land Margin: Constraints for paleoceanographic reconstruction
The Integrated Ocean Drilling Program Expedition 318 to the Wilkes Land margin of Antarctica recovered a sedimentary succession ranging in age from lower Eocene to the Holocene. Excellent stratigraphic control is key to understanding the timing of paleoceanographic events through critical climate intervals. Drill sites recovered the lower and middle Eocene, nearly the entire Oligocene, the Miocene
Authors
L. Tauxe, C.E. Stickley, S. Sugisaki, P.K. Bijl, S. M. Bohaty, H. Brinkhuis, C. Escutia, J.A. Flores, A.J.P. Houben, M. Iwai, F. Jiménez-Espejo, R. McKay, S. Passchier, J. Pross, Christina Riesselman, U. Röhl, F. Sangiorgi, K. Welsh, A. Klaus, A. Fehr, J.A.P. Bendle, R. Dunbar, J. Gonzàlez, T. Hayden, K. Katsuki, M.P. Olney, S.F. Pekar, P.K. Shrivastava, T. van de Flierdt, T. Williams, M. Yamane
Patterns and controlling factors of species diversity in the Arctic Ocean
Aim The Arctic Ocean is one of the last near-pristine regions on Earth, and, although human activities are expected to impact on Arctic ecosystems, we know very little about baseline patterns of Arctic Ocean biodiversity. This paper aims to describe Arctic Ocean-wide patterns of benthic biodiversity and to explore factors related to the large-scale species diversity patterns.Location Arctic Ocea
Authors
Moriaki Yasuhara, Gene Hunt, Gert van Dijken, Kevin R. Arrigo, Thomas M. Cronin, Jutta E. Wollenburg
Effects of urban best management practices on streamflow and phosphorus and suspended-sediment transport on Englesby Brook in Burlington, Vermont, 2000-2010
An assessment of the effectiveness of several urban best management practice structures, including a wet extended detention facility and a shallow marsh wetland (together the "wet extended detention ponds"), was made using data collected from 2000 through 2010 at Englesby Brook in Burlington, Vermont. The purpose of the best management practices was to reduce high streamflows and phosphorus and su
Authors
Laura Medalie
Comparative effectiveness of membrane bioreactors, conventional secondary treatment, and chlorine and UV disinfection to remove microorganisms from municipal wastewaters
Log removals of bacterial indicators, coliphage, and enteric viruses were studied in three membrane bioreactor (MBR) activated-sludge and two conventional secondary activated-sludge municipal wastewater treatment plants during three recreational seasons (May-Oct.) when disinfection of effluents is required. In total, 73 regular samples were collected from key locations throughout treatment process
Authors
Donna S. Francy, A. Stelzer Erin, Rebecca N. Bushon, Amie M. G. Brady, Ashley G. Williston, Kimberly R. Riddell, Mark A. Borchardt, Susan K. Spencer, Terry M. Gellner
Comparison of base flows to selected streamflow statistics representative of 1930-2002 in West Virginia
Base flows were compared with published streamflow statistics to assess climate variability and to determine the published statistics that can be substituted for annual and seasonal base flows of unregulated streams in West Virginia. The comparison study was done by the U.S. Geological Survey, in cooperation with the West Virginia Department of Environmental Protection, Division of Water and Waste
Authors
Jeffrey B. Wiley