Water quality of the Chokosna, Gilahina, Lakina Rivers, and Long Lake watershed along McCarthy Road, Wrangell-St. Elias National Park and Preserve, Alaska, 2007-08
Timothy P. Brabets, Robert T. Ourso, Matthew P. Miller, Anne M. D. Brasher
2011, Scientific Investigations Report 2011-5185
The Chokosna, Gilahina, and Lakina River basins, and the Long Lake watershed are located along McCarthy Road in Wrangell–St. Elias National Park and Preserve. The rivers and lake support a large run of sockeye (red) salmon that is important to the commercial and recreational fisheries in the larger Copper River....
Using observed postconstruction peak discharges to evaluate a hydrologic and hydraulic design model, Boneyard Creek, Champaign and Urbana, Illinois
Thomas M. Over, David T. Soong, Robert R. Holmes Jr.
2011, Scientific Investigations Report 2011-5176
Boneyard Creek—which drains an urbanized watershed in the cities of Champaign and Urbana, Illinois, including part of the University of Illinois at Urbana-Champaign (UIUC) campus—has historically been prone to flooding. Using the Stormwater Management Model (SWMM), a hydrologic and hydraulic model of Boneyard Creek was developed for the design of...
Trends in suspended-sediment loads and concentrations in the Mississippi River Basin, 1950–2009
David C. Heimann, Lori A. Sprague, Dale W. Blevins
2011, Scientific Investigations Report 2011-5200
Trends in loads and concentrations of suspended sediment and suspended sand generally were downward for stations within the Mississippi River Basin during the 60-, 34-, and 12-year periods analyzed. Sediment transport in the lower Mississippi River has historically been, and continues to be, most closely correlative to sediment contributions from...
Secretion of anti-Müllerian hormone in the Florida manatee Trichechus manatus latirostris, with implications for assessing conservation status
Rhian C. Wilson, John E. Reynolds III, Dana L. Wetzel, Leslie Schwierzke-Wade, Robert K. Bonde, Kevin F. Breuel, William E. Roudebush
2011, Endangered Species Research (14) 107-112
Environmental and anthropogenic stressors can affect wildlife populations in a number of ways. For marine mammals (e.g. the Florida manatee Trichechus manatus latirostris), certain stressors or conservation risk factors have been identified, but sublethal effects have been very difficult to assess using traditional methods. The development of 'biomarkers' allows us...
Sediment infilling and wetland formation dynamics in an active crevasse splay of the Mississippi River delta
Donald R. Cahoon, David A. White, James C. Lynch
2011, Geomorphology (131) 57-68
Crevasse splay environments provide a mesocosm for evaluating wetland formation and maintenance processes on a decadal time scale. Site elevation, water levels, vertical accretion, elevation change, shallow subsidence, and plant biomass were measured at five habitats along an elevation gradient to evaluate wetland formation and development in Brant Pass Splay;...
Sedimentation and response to sea-level rise of a restored marsh with reduced tidal exchange: Comparison with a natural tidal marsh
W. Vandenbruwaene, T. Maris, Donald R. Cahoon, P. Meire, S. Temmerman
2011, Geomorphology (130) 115-126
Along coasts and estuaries, formerly embanked land is increasingly restored into tidal marshes in order to re-establish valuable ecosystem services, such as buffering against flooding. Along the Scheldt estuary (Belgium), tidal marshes are restored on embanked land by allowing a controlled reduced tide (CRT) into a constructed basin, through a...
Spatial distribution and risk factors of highly pathogenic avian influenza (HPAI) H5N1 in China
Vincent Martin, Dirk U. Pfeiffer, Xiaoyan Zhou, Xiangming Xiao, Diann J. Prosser, Fusheng Guo, Marius Gilbert
2011, PLoS Pathogens (7)
Highly pathogenic avian influenza (HPAI) H5N1 was first encountered in 1996 in Guangdong province (China) and started spreading throughout Asia and the western Palearctic in 2004–2006. Compared to several other countries where the HPAI H5N1 distribution has been studied in some detail, little is known about the environmental correlates of...
Sources of mercury to San Francisco Bay surface sediment as revealed by mercury stable isotopes
Gretchen E. Gehrke, Joel D. Blum, Mark Marvin-DePasquale
2011, Geochimica et Cosmochimica Acta (75) 691-705
Mercury (Hg) concentrations and isotopic compositions were examined in shallow-water surface sediment (0–2 cm) from San Francisco (SF) Bay to determine the extent to which historic Hg mining contributes to current Hg contamination in SF Bay, and to assess the use of Hg isotopes to trace sources of contamination in...
Some possible causes of and corrections for STS-1 response changes in the Global Seismographic Network
C. R. Hutt, A. T. Ringler
2011, Seismological Research Letters (82) 560-571
The Global Seismographic Network (GSN) (Figure 1) plays a key role in providing seismic data for global earthquake monitoring (e.g., Benz et al. 2005), earthquake science (e.g., Tsai et al. 2005), and studies of Earth structure (e.g., Dalton et al. 2008). One of the key GSN design goals is to...
Modeling the potential impact of seasonal and inactive multi-aquifer wells on contaminant movement to public water-supply wells
R.L. Johnson, B.R. Clark, M.K. Landon, L. J. Kauffman, S. M. Eberts
2011, Journal of the American Water Resources Association (47) 588-596
Wells screened across multiple aquifers can provide pathways for the movement of surprisingly large volumes of groundwater to confined aquifers used for public water supply (PWS). Using a simple numerical model, we examine the impact of several pumping scenarios on leakage from an unconfined aquifer to a confined aquifer and...
Amphibian chytrid fungus (Batrachochytrium dendrobatidis) in coastal and montane California, USA Anurans
Gary M. Fellers, Rebecca A. Cole, David M. Reinitz, Patrick M. Kleeman
2011, Herpetological Conservation and Biology (6) 383-394
We found amphibian chytrid fungus (Bd = Batrachochytrium dendrobatidis) to be widespread within a coastalwatershed at Point Reyes National Seashore, California and within two high elevation watersheds at Yosemite NationalPark, California. Bd was associated with all six species that we sampled (Bufo boreas, B. canorus, Pseudacris regilla, Ranadraytonii, R. sierrae,...
3-D flow and scour near a submerged wing dike: ADCP measurements on the Missouri River
E. C. Jamieson, C. D. Rennie, R. B. Jacobson, R. D. Townsend
2011, Water Resources Research (47)
Detailed mapping of bathymetry and three-dimensional water velocities using a boat-mounted single-beam sonar and acoustic Doppler current profiler (ADCP) was carried out in the vicinity of two submerged wing dikes located in the Lower Missouri River near Columbia, Missouri. During high spring flows the wing dikes become submerged, creating a...
Accounting for non-independent detection when estimating abundance of organisms with a Bayesian approach
Julien Martin, J. Andrew Royle, Darryl I. MacKenzie, Holly H. Edwards, Marc Kery, Beth Gardner
2011, Methods in Ecology and Evolution (2) 595-601
Summary1. Binomial mixture models use repeated count data to estimate abundance. They are becoming increasingly popular because they provide a simple and cost‐effective way to account for imperfect detection. However, these models assume that individuals are detected independently of each other. This...
Setting limits: Using air pollution thresholds to protect and restore US ecosystems
Mark E. Fenn, Kathleen F. Lambert, Tamara F. Blett, Douglas A. Burns, Linda H. Pardo, Gary M. Lovett, Richard A. Haeuber, David C. Evers, Charles T. Driscoll, Dean S. Jeffries
2011, Issues in Ecology 1-21
More than four decades of research provide unequivocal evidence that sulfur, nitrogen, and mercury pollution have altered, and will continue to alter, our nation's lands and waters. The emission and deposition of air pollutants harm native plants and animals, degrade water quality, affect forest productivity, and are damaging to human...
Exchange of Groundwater and Surface-Water Mediated by Permafrost Response to Seasonal and Long Term Air Temperature Variation
Shemin Ge, Jeffrey McKenzie, Clifford Voss, Qingbai Wu
2011, Geophysical Research Letters (38)
Permafrost dynamics impact hydrologic cycle processes by promoting or impeding groundwater and surface water exchange. Under seasonal and decadal air temperature variations, permafrost temperature changes control the exchanges between groundwater and surface water. A coupled heat transport and groundwater flow model, SUTRA, was modified to simulate groundwater flow and heat...
Defining conservation priorities for freshwater fishes according to taxonomic, functional, and phylogenetic diversity
Angela L. Strecker, Julian D. Olden, Joanna B. Whittier, Craig P. Paukert
2011, Ecological Applications (21) 3002-3013
To date, the predominant use of systematic conservation planning has been to evaluate and conserve areas of high terrestrial biodiversity. Although studies in freshwater ecosystems have received recent attention, research has rarely considered the potential trade-offs between protecting different dimensions of biodiversity and the ecological processes that maintain diversity. We...
Patterns in young-of-year smallmouth bass microhabitat use in multiple stream segments with contrasting land uses
Shannon K. Brewer
2011, Fisheries Management and Ecology (18) 506-512
Young-of-the-year (YOY) smallmouth bass, Micropterus dolomieu Lacepede, were evaluated in streams from eight catchments with two contrasting land uses to determine their use of microhabitats under a variety of stream conditions. Step-wise discriminant function analyses revealed patterns of habitat use by discriminating used from available microhabitat conditions. Velocity was significant...
Utah's geologic and geomorphic analogs to Mars—An overview for planetary exploration
Marjorie A. Chan, Kathleen Nicoll, Jens Ormö, Chris Okubo, Goro Komatsu
2011, Book chapter, Analogs for Planetary Exploration
Utah offers spectacular geologic features and valuable analog environments and processes for Mars studies. Horizontal strata of the Colorado Plateau are analogous to Mars because the overprint of plate tectonics is minimal, yet the effects of strong ground motion from earthquakes or impacts are preserved in the sedimentary record. The...
Spatial patterns of mercury in macroinvertebrates and fishes from streams of contrasting forested landscapes in the eastern United States
Karen Riva-Murray, Lia C. Chasar, Paul M. Bradley, Douglas A. Burns, Mark E. Brigham, Martyn J. Smith, Thomas A. Abrahamsen
2011, Ecotoxicology (20) 1530-1542
Controls on mercury bioaccumulation in lotic ecosystems are not well understood. During 2007–2009, we studied mercury and stable isotope spatial patterns of macroinvertebrates and fishes from two medium-sized (2) forested basins in contrasting settings. Samples were collected seasonally from multiple sites across the Fishing Brook basin (FBNY), in New...
Quantifying the hydrological responses to climate change in an intact forested small watershed in southern China
Guo-Yi Zhou, Xiaohua Wei, Yiping Wu, Shu-Guang Liu, Yuhui Huang, Junhua Yan, Deqiang Zhang, Qianmei Zhang, Juxiu Liu, Ze Meng, Chunlin Wang, Guowei Chu, Shizhong Liu, Xu-Li Tang, Xiaodong Liu
2011, Global Change Biology (17) 3736-3746
Responses of hydrological processes to climate change are key components in the Intergovernmental Panel for Climate Change (IPCC) assessment. Understanding these responses is critical for developing appropriate mitigation and adaptation strategies for sustainable water resources management and protection of public safety. However, these responses are not well understood and little...
Oil detection in a coastal marsh with polarimetric Synthetic Aperture Radar (SAR)
Elijah W. Ramsey III, Amina Rangoonwala, Yukihiro Suzuoki, Cathleen E. Jones
2011, Remote Sensing (3) 2630-2662
The National Aeronautics and Space Administration's airborne Uninhabited Aerial Vehicle Synthetic Aperture Radar (UAVSAR) was deployed in June 2010 in response to the Deepwater Horizon oil spill in the Gulf of Mexico. UAVSAR is a fully polarimetric L-band Synthetic Aperture Radar (SAR) sensor for obtaining data at high spatial resolutions....
Sea-level rise and landscape change influence mangrove encroachment onto marsh in the Ten Thousand Islands region of Florida, USA
Ken W. Krauss, Andrew S. From, Thomas W. Doyle, Terry J. Doyle, Michael J. Barry
2011, Journal of Coastal Conservation (15) 629-638
The Ten Thousand Islands region of southwestern Florida, USA is a major feeding and resting destination for breeding, migrating, and wintering birds. Many species of waterbirds rely specifically on marshes as foraging habitat, making mangrove encroachment a concern for wildlife managers. With the alteration of freshwater flow and sea-level rise...
Sediment concentrations, loads, and particle-size distributions in the Red River of the North and selected tributaries near Fargo, North Dakota, during the 2011 spring high-flow event
Joel M. Galloway, Robert A. Blanchard, Christopher A. Ellison
2011, Scientific Investigations Report 2011-5134
To provide accurate and reliable information on sediment near the Fargo-Moorhead metropolitan area, the U.S. Geological Survey in cooperation with the U.S. Army Corps of Engineers conducted a study in the spring (March-May) of 2010 and the spring of 2011 to examine sediment concentrations, loads, and particle-size distributions at nine...
Silver bioaccumulation dynamics in a freshwater invertebrate after aqueous and dietary exposures to nanosized and ionic Ag
Marie-Noe le Croteau, Superb K. Misra, Samuel N. Luoma, Eugenia Valsami-Jones
2011, Environmental Science & Technology (45) 6600-6607
We compared silver (Ag) bioavailability and toxicity to a freshwater gastropod after exposure to ionic silver (Ag+) and to Ag nanoparticles (Ag NPs) capped with citrate or with humic acid. Silver form, exposure route, and capping agent influence Ag bioaccumulation dynamics in Lymnaea stagnalis. Snails efficiently accumulated Ag from all...
Mineral Commodity Summaries 2011
Water Resources Division, U.S. Geological Survey
2011, Mineral Commodity Summaries 2011
Each chapter of the 2011 edition of the U.S. Geological Survey (USGS) Mineral Commodity Summaries (MCS) includes information on events, trends, and issues for each mineral commodity as well as discussions and tabular presentations on domestic industry structure, Government programs, tariffs, 5-year salient statistics, and world production and resources. The...
