Extrapolating growth reductions in fish to changes in population extinction risks: Copper and Chinook salmon.
Christopher A. Mebane, David L. Arthaud
2010, Human and Ecological Risk Assessment (16) 1026-1065
Fish commonly respond to stress, including stress from chemical exposures, with reduced growth. However, the relevance to wild populations of subtle and sometimes transitory growth reductions may not be obvious. At low-level, sustained exposures, Cu is one substance that commonly causes reduced growth but little mortality in laboratory toxicity tests...
The effects of land cover and land use change on the contemporary carbon balance of the arctic and boreal terrestrial ecosystems of northern Eurasia
Daniel J. Hayes, A. David McGuire, David W. Kicklighter, Todd J. Burnside, Jerry M. Melillo
2010, Book chapter, Eurasian Arctic land cover and land use in a changing climate
Recent changes in climate, disturbance regimes and land use and management systems in Northern Eurasia have the potential to disrupt the terrestrial sink of atmospheric CO2 in a way that accelerates global climate change. To determine the recent trends in the carbon balance of the arctic and boreal ecosystems of...
Modeling to evaluate the response of savanna-derived cropland to warming–drying stress and nitrogen fertilizers
Zhengxi Tan, Larry L. Tieszen, Shuguang Liu, E. Tachie-Obeng
2010, Climatic Change (100) 702-715
Many savannas in West Africa have been converted to croplands and are among the world’s regions most vulnerable to climate change due to deteriorating soil quality. We focused on the savanna-derived cropland in northern Ghana to simulate its sensitivity to projected climate change and nitrogen fertilization scenarios. Here we show...
Modeling the impacts of hunting on the population dynamics of red howler monkeys (Alouatta seniculus)
Ruscena Wiederholt, Eduardo Fernandez-Duque, Duane R. Diefenbach, Rasanayagam Rudran
2010, Ecological Modelling (221) 2482-2490
Overexploitation of wildlife populations occurs across the humid tropics and is a significant threat to the long-term survival of large-bodied primates. To investigate the impacts of hunting on primates and ways to mitigate them, we developed a spatially explicit, individual-based model for a landscape that included hunted and un-hunted areas....
Map correlation method: Selection of a reference streamgage to estimate daily streamflow at ungaged catchments
Stacey A. Archfield, Richard M. Vogel
2010, Water Resources Research (46)
Daily streamflow time series are critical to a very broad range of hydrologic problems. Whereas daily streamflow time series are readily obtained from gaged catchments, streamflow information is commonly needed at catchments for which no measured streamflow information exists. At ungaged catchments, methods to estimate daily streamflow time series typically...
Factors influencing wood mobilization in Minnesota streams
Eric Merten, Jacques Finlay, Lucinda Johnson, Raymond Newman, Heinz Stefan, Bruce C. Vondracek
2010, Water Resources Research (46)
Natural pieces of wood provide a variety of ecosystem functions in streams including habitat, organic matter retention, increased hyporheic exchange and transient storage, and enhanced hydraulic and geomorphic heterogeneity. Wood mobilization is a critical process in determining the residence time of wood. We documented the characteristics and locations of 865...
Groundwater level and specific conductance monitoring at Marine Corps Base, Camp Lejeune, Onslow County, North Carolina, 2007-2008
Kristen Bukowski McSwain
2010, Open-File Report 2010-1103
The U.S. Geological Survey, in cooperation with the Marine Corps Base, Camp Lejeune, monitored water-resources conditions in the surficial, Castle Hayne, Peedee, and Black Creek aquifers in Onslow County, North Carolina, from November 2007 through September 2008. To comply with North Carolina Central Coastal Plain Capacity Use Area regulations, large-volume...
Selenium concentrations and stable isotopic compositions of carbon and nitrogen in the benthic clam Corbula amurensis from northern San Francisco Bay, California: May 1995–February 2010
Amy E. Kleckner, A. Robin Stewart, Kent A. Elrick, Samuel N. Luoma
2010, Open-File Report 2010-1252
The clam-based food webs of San Francisco Bay, California efficiently bioaccumlate selenium and thus provide pathways for exposure to predators important to the estuary. This study documents changes in monthly selenium concentrations for the clam Corbula amurensis, a keystone species of the estuary, at five locations in northern San Francisco Bay...
Flood-inundation maps for a 15-mile reach of the Kalamazoo River from Marshall to Battle Creek, Michigan
C. J. Hoard, K. K. Fowler, M. H. Kim, C. D. Menke, S. E. Morlock, M. C. Peppler, C. M. Rachol, M. T. Whitehead
2010, Scientific Investigations Map 3135
Digital flood-inundation maps for a 15-mile reach of the Kalamazoo River from Marshall to Battle Creek, Michigan, were created by the U.S. Geological Survey (USGS) in cooperation with the U.S. Environmental Protection Agency to help guide remediation efforts following a crude-oil spill on July 25, 2010. The spill happened on...
Probability and volume of potential postwildfire debris flows in the 2010 Fourmile burn area, Boulder County, Colorado
Barbara C. Ruddy, Michael R. Stevens, Kristine Verdin
2010, Open-File Report 2010-1244
This report presents a preliminary emergency assessment of the debris-flow hazards from drainage basins burned by the Fourmile Creek fire in Boulder County, Colorado, in 2010. Empirical models derived from statistical evaluation of data collected from recently burned basins throughout the intermountain western United States were used to estimate the...
Occurrence of antibiotic compounds in source water and finished drinking water from the upper Scioto River Basin, Ohio, 2005-6
Dennis P. Finnegan, Laura A. Simonson, Michael T. Meyer
2010, Scientific Investigations Report 2010-5083
The occurrence of antibiotics in surface water and groundwater in urban basins has become a topic of increasing interest in recent years. Little is known about the occurrence, fate, or transport of these compounds and the possible health effects in humans and aquatic life. The U.S. Geological Survey, in cooperation...
Geologic map of the Fraser 7.5-minute quadrangle, Grand County, Colorado
Ralph R. Shroba, Bruce Bryant, Karl S. Kellogg, Paul K. Theobald, Theodore R. Brandt
2010, Scientific Investigations Map 3130
The geologic map of the Fraser quadrangle, Grand County, Colo., portrays the geology along the western boundary of the Front Range and the eastern part of the Fraser basin near the towns of Fraser and Winter Park. The oldest rocks in the quadrangle include gneiss, schist, and plutonic rocks of...
Chromium-Makes stainless steel stainless
S.J. Kropschot, Jeff Doebrich
2010, Fact Sheet 2010-3089
Chromium, a steely-gray, lustrous, hard metal that takes a high polish and has a high melting point, is a silvery white, hard, and bright metal plating on steel and other material. Commonly known as chrome, it is one of the most important and indispensable industrial metals because of its hardness...
U.S. Geological Survey Science for the Wyoming Landscape Conservation Initiative-2009 Annual Report
Zachary H. Bowen, Cameron L. Aldridge, Patrick J. Anderson, Timothy J. Assal, Laura R. H. Biewick, Steven W. Blecker, R. Sky Bristol, Natasha B. Carr, Anna D. Chalfoun, Geneva W. Chong, James E. Diffendorfer, Bradley C. Fedy, Steven L. Garman, Stephen S. Germaine, Richard I. Grauch, JoAnn M. Holloway, Collin G. Homer, Matthew Kauffman, Douglas Keinath, Natalie Latysh, Daniel J. Manier, Robert R. McDougal, Cynthia P. Melcher, Kirk A. Miller, Jessica Montag, Constance J. Nutt, Christopher J. Potter, Hall Sawyer, Spencer Schell, Sarah L. Shafer, David B. Smith, Lisa L. Stillings, Michele L. Tuttle, Anna B. Wilson
2010, Open-File Report 2010-1231
This is the second report produced by the U.S. Geological Survey (USGS) for the Wyoming Landscape Conservation Initiative (WLCI) to detail annual work activities. The first report described work activities for 2007 and 2008; this report covers work activities conducted in 2009. Important differences between the two reports are that...
Individual growth and reproductive behavior in a newly established population of northern snakehead (Channa argus), Potomac River, USA
Andrew M. Gascho Landis, Nicolas W. R. Lapointe, Paul L. Angermeier
2010, Hydrobiologia (661) 123-131
Northern snakehead (Channa argus) were first found in the Potomac River in 2004. In 2007, we documented feeding and reproductive behavior to better understand how this species is performing in this novel environment. From April to October, we used electrofishing surveys to collect data on growth, condition, and...
Caldera demonstration model
Dina Venezky, Stephen Wessells
2010, Open-File Report 2010-1173
A caldera is a large, usually circular volcanic depression formed when magma is withdrawn or erupted from a shallow underground magma reservoir. It is often difficult to visualize how calderas form. This simple experiment using flour, a balloon, tubing, and a bicycle pump, provides a helpful visualization for caldera formation....
Carbon dioxide dangers demonstration model
Dina Venezky, Stephen Wessells
2010, Open-File Report 2010-1174
Carbon dioxide is a dangerous volcanic gas. When carbon dioxide seeps from the ground, it normally mixes with the air and dissipates rapidly. However, because carbon dioxide gas is heavier than air, it can collect in snowbanks, depressions, and poorly ventilated enclosures posing a potential danger to people and other...
Occurrence and attempted mitigation of carbon dioxide in a home constructed on reclaimed coal-mine spoil, Pike County, Indiana
Bret A. Robinson
2010, Scientific Investigations Report 2010-5157
In recent years carbon dioxide intrusion has become recognized as a potentially serious health threat where homes are constructed on or near reclaimed surface coal mines. When carbon dioxide invades the living space of a home, it can collect near the floor, displace the oxygen there, and produce an oxygen-deficient...
The tectono-thermal evolution of the Waterbury dome, western Connecticut, based on U-Pb and 40Ar/39Ar ages
Craig Dietsch, Michael J. Kunk, John Aleinikoff, John F. Sutter
2010, GSA Memoirs (206) 141-182
The Waterbury dome, located in the Rowe-Hawley zone in western Connecticut, is a triple window exposing three terranes: parautochthonous or allochthonous peri-Laurentian rocks in its lowest level 1, allochthonous rocks of the Rowe-Hawley zone in its middle level 2, and allochthonous cover rocks, including Silurian-Devonian rocks of the...
The potential influence of changing climate on the persistence of salmonids of the inland west
A.L. Haak, J.E. Williams, D. Isaak, A. Todd, C.C. Muhlfeld, J. L. Kershner, R. E. Gresswell, S. W. Hostetler, H.M. Neville
2010, Open-File Report 2010-1236
The Earth's climate warmed steadily during the 20th century, and mean annual air temperatures are estimated to have increased by 0.6°C (Intergovernmental Panel on Climate Change, 2007). Although many cycles of warming and cooling have occurred in the past, the most recent warming period is unique in its rate and...
Implementation of local grid refinement (LGR) for the Lake Michigan Basin regional groundwater-flow model
C. J. Hoard
2010, Scientific Investigations Report 2010-5117
The U.S. Geological Survey is evaluating water availability and use within the Great Lakes Basin. This is a pilot effort to develop new techniques and methods to aid in the assessment of water availability. As part of the pilot program, a regional groundwater-flow model for the Lake Michigan Basin was...
Simulation of groundwater flow and effects of groundwater irrigation on stream base flow in the Elkhorn and Loup River basins, Nebraska, 1895-2055: Phase Two
Jennifer S. Stanton, Steven M. Peterson, Michael N. Fienen
2010, Scientific Investigations Report 2010-5149
Regional groundwater-flow simulations for a 30,000-square-mile area of the High Plains aquifer, referred to collectively as the Elkhorn-Loup Model, were developed to predict the effects of groundwater irrigation on stream base flow in the Elkhorn and Loup River Basins, Nebraska. Simulations described the stream-aquifer system from predevelopment through 2005 [including...
Determination of time-of-travel, dispersion characteristics, and oxygen reaeration coefficients during low streamflows--Lower Tacony/Frankford Creek, Philadelphia, Pennsylvania
Lisa A. Senior, Matthew C. Gyves
2010, Scientific Investigations Report 2010-5195
Time-of-travel, dispersion characteristics, and oxygen reaeration coefficients were determined by use of dye and gas tracing for a 2-mile reach of Tacony/Frankford Creek in Philadelphia, southeastern Pennsylvania. The reach frequently has concentrations of dissolved oxygen (DO) below the water-quality standard of 4 milligrams per liter during warm months. Several large...
Evaluation of aquatic biota in relation to environmental characteristics measured at multiple scales in agricultural streams of the Midwest: 1993-2004
Julie A. Hambrook Berkman, Barbara C. Scudder, Michelle A. Lutz, Mitchell A. Harris
2010, Scientific Investigations Report 2010-5051
This study evaluated the relations between algal, invertebrate, and fish assemblages and physical environmental characteristics of streams at the reach, segment, and watershed scale in agricultural settings in the Midwest. The 86 stream sites selected for study were in predominantly agricultural watersheds sampled as part of the U.S. Geological Survey's...
Low-flow characteristics of the Mississippi River upstream from the Twin Cities Metropolitan Area, Minnesota, 1932-2007
Erich Kessler, David L. Lorenz
2010, Scientific Investigations Report 2010-5163
The U.S. Geological Survey, in cooperation with the Metropolitan Council, conducted a study to characterize regional low flows during 1932?2007 in the Mississippi River upstream from the Twin Cities metropolitan area in Minnesota and to describe the low-flow profile of the Mississippi River between the confluence of the Crow River...
