Estimating the impacts of reservoir elevation changes on kokanee emergence in Flaming Gorge Reservoir, Wyoming-Utah
T. Modde, R.J. Jeric, W.A. Hubert, R.D. Gipson
2011, North American Journal of Fisheries Management (17) 470-473
Flaming Gorge Reservoir, like many western North American reservoirs, is managed to release water during the winter months to allow for water storage associated with melting snow and rain during spring. Decreases in reservoir elevation during winter can cause mortalities of kokanee Oncorhynchus nerka spawned along the shoreline the previous fall. This...
Passage and behavior of adult American shad in an experimental louver bypass system
B. Kynard, C. Buerkett
2011, North American Journal of Fisheries Management (17) 734-742
We tested 436 adult American shad Alosa sapidissima in an experimental louver bypass system, which was similar to a system operating at Holyoke Dam, Massachusetts, to determine guidance and passage efficiency and to study fish response to stimuli from physical structures, light intensity, and water velocity. Groups of 5–29 fish were exposed...
Habitat associations of small fishes around islands in the upper Mississippi River
Barry L. Johnson, Cecil A. Jennings
2011, North American Journal of Fisheries Management (18) 327-336
In large rivers, islands provide a variety of habitat types and increase habitat heterogeneity. Creating or modifying islands with dredged sediments from channel maintenance operations provides an opportunity to enhance habitat features that might promote certain fish communities or general fish abundance. To determine associations between fish species and habitat...
The effects of wetland restoration on mercury bioaccumulation in the South Bay Salt Pond Restoration Project: Using the biosentinel toolbox to monitor changes across multiple habitats and spatial scales
Joshua T. Ackerman, Mark Marvin-DiPasquale, Darell Slotton, Mark P. Herzog, Collin A. Eagles-Smith
2011, Report, 2010 Annual Report to the Resources Legacy Fund, State Coastal Conservancy, and South Bay Salt Ponds Restoration Program
The project was initiated in April 2010, and to date has included four sampling events of surface water (April, May, June/July, and August 2010) and five sampling events of biota (April, May, June/July, August, and September 2010) and three sampling events for surface...
Modeling the fate and transport of polyaromatic hydrocarbons in the saturated zone, Grand Isle, Louisiana
Francis H. Chapelle, Mark A. Widdowson
2011, Report, Summary report for fate and effects of remnant oil remaining in the beach environment
No abstract available....
Quantifying solute transport processes: Are chemically "conservative" tracers electrically conservative?
Kamini Singha, Li Li, Frederick D. Day-Lewis, Aaron B. Regberg
2011, Geophysics (76) F53-F63
The concept of a nonreactive or conservative tracer, commonly invoked in investigations of solute transport, requires additional study in the context of electrical geophysical monitoring. Tracers that are commonly considered conservative may undergo reactive processes, such as ion exchange, thus changing the aqueous composition of the system. As a result,...
Chapter 9: Occurrence of small mammals: Deer mice and challenge of trapping across large spatial extents
Steven E. Hanser, Matthias Leu, Cameron L. Aldridge, Scott E. Nielsen, Steven T. Knick
2011, Book chapter, Sagebrush ecosystem conservation and management: Ecoregional assessment tools and models for the Wyoming Basins
Small mammal communities living in sagebrush (Artemisia spp.) may be sensitive to habitat isolation and invasion by exotic grass species. Yet there have been no spatially explicit models to improve our understanding of landscape-scale factors determining small mammal occurrence or abundance. We live-trapped small mammals at 186 locations in the...
A westward extension of the warm pool leads to a westward extension of the Walker circulation, drying eastern Africa
A. Park Williams, Christopher C. Funk
2011, Climate Dynamics (37) 2417-2435
Observations and simulations link anthropogenic greenhouse and aerosol emissions with rapidly increasing Indian Ocean sea surface temperatures (SSTs). Over the past 60 years, the Indian Ocean warmed two to three times faster than the central tropical Pacific, extending the tropical warm pool to the west by ~40° longitude (>4,000 km). This propensity...
Challenges of predicting the potential distribution of a slow-spreading invader: a habitat suitability map for an invasive riparian tree
Catherine S. Jarnevich, Lindsay V. Reynolds
2011, Biological Invasions (13) 153-163
Understanding the potential spread of invasive species is essential for land managers to prevent their establishment and restore impacted habitat. Habitat suitability modeling provides a tool for researchers and managers to understand the potential extent of invasive species spread. Our goal was to use habitat suitability modeling to map potential...
Comparison of simulations of land-use specific water demand and irrigation water supply by MF-FMP and IWFM
Wolfgang Schmid, Emin Dogural, Randall T. Hanson, Tariq Kadir, Francis Chung
2011, Technical Information Record TIR-2
Two hydrologic models, MODFLOW with the Farm Process (MF-FMP) and the Integrated Water Flow Model (IWFM), are compared with respect to each model’s capabilities of simulating land-use hydrologic processes, surface-water routing, and groundwater flow. Of major concern among the land-use processes was the consumption of water through evaporation and transpiration...
Recent and historic drivers of landscape change in the Everglades ridge, slough, and Tree Island mosaic
Laurel G. Larsen, Nicholas Aumen, Christopher E. Bernhardt, Vic Engel, Thomas J. Givnish, P McCormick S Hagerthey, Judson Harvey, Lynn Leonard, P. McCormick, Christopher McVoy, Gregory E. Noe, Martha K. Nungesser, K. Rutchey, Fred Sklar, Tiffany G. Troxler, John C. Volin, Debra A. Willard
2011, Critical Reviews in Environmental Science and Technology (41) 344-381
More than half of the original Everglades extent formed a patterned peat mosaic of elevated ridges, lower and more open sloughs, and tree islands aligned parallel to the dominant flow direction. This ecologically important landscape structure remained in a dynamic equilibrium for millennia prior to rapid degradation over the past...
Carbon and nitrogen biogeochemistry of a Prairie Pothole Wetland, Stutsman County, North Dakota, USA
JoAnn M. Holloway, Martin B. Goldhaber, Christopher T. Mills
2011, Applied Geochemistry (26, supplement) S44-S47
The concentration and form of dissolved organic C (DOC) and N species (NH4+ and NO3-) were investigated as part of a larger hydrogeochemical study of the Cottonwood Lake Study Area within the Prairie Potholes region. Groundwater, pore water and surface wetland water data were used to help characterize the relationships...
Fine scale movements and habitat use of black brant during the flightless Wing Molt in Arctic Alaska
Tyler L. Lewis, Paul L. Flint, Dirk V. Derksen, Joel A. Schmutz
2011, Waterbirds (34) 177-185
Thousands of Black Brant (Branta bernicla nigricans) migrate annually to the Teshekpuk Lake Special Area (TLSA), Alaska, to undergo the flightless wing molt on tundra lakes and wetlands. GPS transmitters were attached to Brant over two summers (2007–2008) to examine patterns of movement and habitat use of molting Brant, including...
An innovative method for nondestructive analysis of cast iron artifacts at Hopewell Furnace National Historic Site, Pennsylvania
Ronald A. Sloto, Martin F. Helmke
2011, Park Science (27) 50-53
The U.S. Geological Survey (USGS) is conducting research at Hopewell Furnace National Historic Site (fig. 1; see sidebar, page 53) in southeastern Pennsylvania to determine the fate of trace metals, such as arsenic, cobalt, and lead, released into the environment during the iron-smelting process. Arsenic is a carcinogen, cobalt is...
The ichthyofauna of drifting macrophyte mats in the Ivinhema River, upper Paraná River basin, Brazil
C. K. Bulla, Luiz Carlos Gomes, Leandro E. Miranda, A. A. Agostinho
2011, Neotropical Ichthyology (9) 403-409
We describe the fish assemblages associated with drifting macrophyte mats and consider their possible role as dispersal vectors in the Ivinhema River, a major tributary of the upper Paraná River, Brazil. Fish associated with drifting mats were sampled in the main river channel during January and March 2005, when the...
Electrical properties of methane hydrate + sediment mixtures
Wyatt L. Du Frane, Laura A. Stern, Karen A. Weitemeyer, Steven Constable, Jeffery J. Roberts
2011, Fire in the Ice: NETL Methane Hydrate Newsletter (11) 10-13
As part of our DOE-funded proposal to characterize gas hydrate in the Gulf of Mexico using marine electromagnetic methods, a collaboration between SIO, LLNL, and USGS with the goal of measuring the electrical properties of lab-created methane (CH4) hydrate and sediment mixtures was formed. We examined samples with known characteristics...
Effects of hypoxia on consumption, growth, and RNA:DNA ratios of young Yellow Perch
James J. Roberts, Stephen B. Brandt, David Fanslow, Stuart A. Ludsin, Steven A. Pothoven, Donald Scavia, Tomas O. Hook
2011, Transactions of the American Fisheries Society (140) 1574-1586
As in various freshwater and coastal marine ecosystems worldwide, seasonal bottom water hypoxia is a recurring phenomenon in Lake Erie’s central basin. While bottom hypoxia can strongly affect sessile benthic animals, its effects on mobile organisms such as fish are less understood. We evaluated the potential for bottom hypoxia to affect the growth...
Seasonal and interannual effects of hypoxia on fish habitat quality in central Lake Erie
Kristin K. Arend, Dmitry Beletsky, Joseph DePinto, Stuart A. Ludsin, James J. Roberts, Daniel K. Rucinski, Donald Scavia, David J. Schwab, Tomas O. Hook
2011, Freshwater Biology (56) 366-383
1. Hypoxia occurs seasonally in many stratified coastal marine and freshwater ecosystems when bottom dissolved oxygen (DO) concentrations are depleted below 2–3 mg O2 L-1. 2. We evaluated the effects of hypoxia on fish habitat quality in the central basin of Lake Erie from 1987 to 2005, using bioenergetic growth rate...
Hydrologic effects of urbanization and climate change on the Flint River Basin, Georgia
Roland J. Viger, Lauren E. Hay, Steven L. Markstrom, John W. Jones, Gary R. Buell
2011, Earth Interactions (15)
The potential effects of long-term urbanization and climate change on the freshwater resources of the Flint River basin were examined by using the Precipitation-Runoff Modeling System (PRMS). PRMS is a deterministic, distributed-parameter watershed model developed to evaluate the effects of various combinations of precipitation, temperature, and land cover on streamflow...
Analytical characterization of selective benthic flux components in estuarine and coastal waters
Jeffrey N. King
2011, Book chapter, Treatise on Estuarine and Coastal Science
Benthic flux is the rate of flow across the bed of a water body, per unit area of bed. It is forced by component mechanisms, which interact. For example, pressure gradients across the bed, forced by tide, surface gravity waves, density gradients, bed–current interaction, turbulence, and terrestrial hydraulic gradients, drive...
An evaluation of agreement between pectoral spines and otoliths for estimating ages of catfishes
J.A. Olive, Harold Schramm Jr., Patrick D. Gerard, E. Irwin
2011, American Fisheries Society Symposium (77) 679-688
Otoliths have been shown to provide more accurate ages than pectoral spine sections for several catfish populations; but sampling otoliths requires euthanizing the specimen, whereas spines can be sampled non-lethally. To evaluate whether, and under what conditions, spines provide the same or similar age estimates as otoliths, we examined data...
Perceptions of fish habitat conditions in Oklahoma tailwater fisheries: a survey of fisheries managers
James M. Long
2011, Proceedings of the Southeastern Association of Fish and Wildlife Agencies (65) 119-124
While the downstream effects of dams on fish habitat have long been recognized, broad-scale assessments of tailwater fish habitat have rarely been conducted. In this paper, I report on the status of tailwater fisheries in Oklahoma as determined through a web-based survey of fisheries biologists with the Oklahoma Department of...
Stream-groundwater interactions
Kenneth E. Bencala
2011, Book chapter, Treatise on Water Science
Streams and their surrounding catchments exchange water and solutes on a range of physical scales. Exchange with the stream may extend into the interstitial areas of the streambed, the hyporheic zone, the riparian area, or the catchment's groundwater flow system. Even at the smaller scales, the exchanges significantly influence solute...
Environmental influences on the occurrences of sepiolite and palygorskite: a brief review
Blair F. Jones, Kathryn M. Conko
2011, Book chapter, Developments in Clay Science
Sepiolite is a hydrous magnesium silicate formed by precipitation of near-surface brackish or saline waters, under semi-arid climatic conditions. Four major influences on the distribution of sepiolite are source materials, climate, physical parameters and associated phase relations. Two major pathways governing the occurrence of sepiolite and palygorskite are direct precipitation...
Water Use in Louisiana, 2010
B. Pierre Sargent
2011, Report
In 2010, approximately 8,500 million gallons per day (Mgal/d) of water was withdrawn from groundwater and surface-water sources in Louisiana. Total groundwater withdrawals were about 1,600 Mgal/d, and total surfacewater withdrawals were about 7,000 Mgal/d. From 2005 to 2010, groundwater withdrawals in Louisiana increased by 1.8 percent, and surface-water withdrawals...
