Climate change and vulnerability of bull trout (Salvelinus confluentus) in a fire-prone landscape.
Jeffrey A. Falke, Rebecca L. Flitcroft, Jason B. Dunham, Kristina M. McNyset, Paul F. Hessburg, Gordon H. Reeves
2015, Canadian Journal of Fisheries and Aquatic Sciences (72) 304-318
Linked atmospheric and wildfire changes will complicate future management of native coldwater fishes in fire-prone landscapes, and new approaches to management that incorporate uncertainty are needed to address this challenge. We used a Bayesian network (BN) approach to evaluate population vulnerability of...
Isotopic geochemistry of Panama rivers
Russell S. Harmon, Gerhard Worner, Michael J. Pribil, Zoltan Kern, Istvan Forizs, W. Berry Lyons, Christopher B. Gardner, Steven T. Goldsmith
2015, Procedia Earth and Planetary Science (13) 108-111
River water samples collected from 78 watersheds rivers along a 500-km transect across a Late Cretaceous-Tertiary andesitic volcanic arc terrane in west-central Panama provide a synoptic overview of riverine geochemistry, chemical denudation, and CO2 consumption in the tropics. D/H and 18O/16O relationships indicate that bedrock dissolution of andesitic arc crust...
2014 status of the Lake Ontario lower trophic levels
Kristen T. Holeck, Lars G. Rudstam, Christopher Hotaling, Russ D. McCullough, Dave Lemon, Web Pearsall, Jana Lantry, Michael J. Connerton, Steve LaPan, Zy Biesinger, Brian F. Lantry, Maureen Walsh, Brian Weidel
2015, NYSDEC Lake Ontario Annual Report 2014-16
Soluble reactive phosphorus (SRP) concentrations have been stable in nearshore and offshore habitats since 1998 (0.4 – 3.3 μg/L). SRP concentrations were low in 2014; Apr/May – Oct mean values were <1 μg/L at most sites. Spring TP concentrations at individual sites exceeded 10 μg/L on occasion, but spring means...
Evaluation of stream flow effects on smolt survival in the Yakima River Basin, Washington, 2012-2014
Ian Courter, Tommy Garrison, Tobias J. Kock, Russell W. Perry
2015, Report
The influence of stream flow on survival of emigrating juvenile (smolts) Pacific salmon Oncorhynchus spp. and steelhead trout O. mykiss is of key management interest. However, few studies have quantified flow effects on smolt migration survival, and available information does not indicate a consistent flow-survival relationship within the typical range...
Ocean minerals
James R. Hein, Kira L. Mizell
Hance D. Smith, Juan Luis Suarez de Vivero, Tundi S. Agardy, editor(s)
2015, Book chapter, Routledge handbook of ocean resources and management
Nearly 71 percent of the Earth is covered by ocean, yet during the entire history of societies, the mineral resources essential for nation building have been acquired solely from the continents. Deep-ocean minerals were discovered over a century ago during the Challenger...
Estimating sturgeon abundance in the Carolinas using side-scan sonar
H. Jared Flowers, Joseph E. Hightower
2015, Marine and Coastal Fisheries: Dynamics, Management, and Ecosystem Science (7) 1-9
Sturgeons (Acipenseridae) are one of the most threatened taxa worldwide, including species in North Carolina and South Carolina. Populations of Atlantic Sturgeon Acipenser oxyrinchus in the Carolinas have been significantly reduced from historical levels by a combination of intense fishing and habitat loss. There is a need for estimates of...
Contrasting fish assemblages in free-flowing and impounded tributaries to the Upper Delaware River: Implications for conserving biodiversity
Barry P. Baldigo, Mari-Beth Delucia, Walter D. Keller, George E. Schuler, Colin D. Apse, Tara Moberg
2015, Book chapter, Advances in Environmental Research
The Neversink River and the Beaver Kill in southeastern New York are major tributaries to the Delaware River, the longest undammed river east of the Mississippi. While the Beaver Kill is free flowing for its entire length, the Neversink River is subdivided by the Neversink Reservoir, which likely affects the...
Spatial patterns of atmospheric deposition of nitrogen and sulfur using ion-exchange resin collectors in Rocky Mountain National Park, USA
David W. Clow, Heidi Roop, Leora Nanus, Mark Fenn, Graham A. Sexstone
2015, Atmospheric Environment (101) 149-157
Lakes and streams in Class 1 wilderness areas in the western United States (U.S.) are at risk from atmospheric deposition of nitrogen (N) and sulfur (S), and protection of these resources is mandated under the Federal Clean Air Act and amendments. Assessment of critical loads, which are the maximum exposure...
Characterization of stormwater runoff from bridges in North Carolina and the effects of bridge runoff on receiving streams
Chad Wagner, Sharon Fitzgerald, Matthew Lauffer
2015, Conference Paper, Proceedings of the 2015 International Conference on Ecology & Transportation
The presentation will provide an overview of a collaborative study between USGS, NC Department of Transportation and URS Corporation to characterize stormwater runoff from bridges in North Carolina and the effects of bridge runoff on receiving streams. This investigation measured bridge deck runoff from 15 bridges for 12-15 storms, stream...
Ground-based thermal imaging of stream surface temperatures: Technique and evaluation
Scott A. Bonar, Sally J. Petre
2015, North American Journal of Fisheries Management (35) 1209-1218
We evaluated a ground-based handheld thermal imaging system for measuring water temperatures using data from eight southwestern USA streams and rivers. We found handheld thermal imagers could provide considerably more spatial information on water temperature (for our unit one image = 19,600 individual temperature measurements) than traditional methods could supply...
Causes and consequences of ecosystem service regionalization in a coastal suburban watershed
Wilfred M. Wollheim, Mark B. Green, Brian A. Pellerin, Nathaniel B. Morse, Charles S. Hopkinson
2015, Estuaries and Coasts (1) 19-34
The demand for ecosystem services and the ability of natural ecosystems to provide those services evolve over time as population, land use, and management practices change. Regionalization of ecosystem service activity, or the expansion of the area providing ecosystem services to a population, is a common response in densely populated...
An integrated approach to conjunctive-use analysis with the one-water hydrologic flow model, MODFLOW-OWHM
Scott E. Boyce, Randall T. Hanson
2015, Conference Paper, Proceedings: MODFLOW and more 2015: Modeling a complex world
The MODFLOW-2005 (MF) family of hydrologic simulators has diverged into multiple versions designed for specific needs, thus limiting their use to their respective designs. The One-Water Hydrologic Flow Model (MF-OWHM v1.0) is an integrated hydrologic flow model that is an enhanced fusion of multiple MF versions. While maintaining compatibility with...
Mobilization of microspheres from a fractured soil during intermittent infiltration events
Sanjay Mohanty, Mark Bulicek, David W. Metge, Ronald W. Harvey, Joseph N. Ryan, Alexandria B. Boehm
2015, Vadose Zone Journal (14)
Pathogens or biocolloids mobilized in the vadose zone may consequently contaminate groundwater. We found that microspheres were mobilized from a fractured soil during intermittent rainfall and the mobilization was greater when the microsphere size was larger and when the soil had greater water permeability.The vadose zone filters pathogenic microbes from...
2013 Monitoring and tracking wet nitrogen deposition at Rocky Mountain National Park
Kristi Morris, M. Alisa Mast, David W. Clow, Gregory A. Wetherbee, Jill Baron, Curt Taipale, Tamara Blett, David A. Gay, Daniel Bowker
2015, Natural Resource Report NPS/NRSS/ARD/NRR—2015/997
In 2004, multiple agencies including the Colorado Department of Public Health and Environment (CDPHE), the National Park Service (NPS), and the U.S. Environmental Protection Agency (U.S. EPA) met to address the effects and trends of nitrogen deposition and related air quality issues at Rocky Mountain National Park (RMNP). These agencies...
Identifying sediment sources in the sediment TMDL process
Allen C. Gellis, Faith A. Fitzpatrick, Joseph P. Schubauer-Berigan, R.B. Landy, Lillian E. Gorman Sanisaca
2015, Conference Paper, Proceedings of the 3rd Joint Federal Interagency Conference (10th Federal Interagency Sedimentation Conference and 5th Federal Interagency Hydrologic Modeling Conference)
Sediment is an important pollutant contributing to aquatic-habitat degradation in many waterways of the United States. This paper discusses the application of sediment budgets in conjunction with sediment fingerprinting as tools to determine the sources of sediment in impaired waterways. These approaches complement monitoring, assessment, and modeling of sediment erosion,...
Silvio O. Conte National Fish and Wildlife Refuge: Draft comprehensive conservation plan and environmental impact statement
U.S. Fish and Wildlife Service, Elizabeth Donovan, William Gascoigne, Catherine Cullinane Thomas
2015, Report
The Connecticut River is treasured by all for its majesty and significance in supporting life along its winding 410-mile passage through urban and rural communities in New Hampshire, Vermont, Massachusetts, and Connecticut. Working with our partners, we are inspired to protect and enhance the natural and cultural richness throughout the...
Mottled duck (Anas fulvigula) movements in the Texas Chenier Plain Region
Jena A. Moon, David A. Haukos, Warren C. Conway
2015, Journal of the Southeastern Association of Fish and Wildlife Agencies (2) 255-267
As a surrogate species for Strategic Habitat Conservation, the mottled duck (Anas fulgivula) is an indicator species to coastal marsh health and function. Currently, biologists have a relatively poor understanding of regional mottled duck movements. We outfitted adult female mottled ducks with solar satellite transmitters during summer 2009–2011. Movement patterns...
High-speed limnology: Using advanced sensors to investigate spatial variability in biogeochemistry and hydrology
John T. Crawford, Luke C. Loken, Nora J. Casson, Colin Smith, Amanda G. Stone, Luke A. Winslow
2015, Environmental Science & Technology (49) 442-450
Advanced sensor technology is widely used in aquatic monitoring and research. Most applications focus on temporal variability, whereas spatial variability has been challenging to document. We assess the capability of water chemistry sensors embedded in a high-speed water intake system to document spatial variability. This new sensor platform continuously samples...
Conocimientos básico científico y técnico necesarios para la evaluación y gestion de los SAT
Randall T. Hanson, Ruben Chavez Guillen, Ofelia Tujchneider, Alfonso Rivera, William Alley, Alyssa Dausman, Lourdes Batista, Marcela Espinoza
2015, Book chapter, Estrategia regional para la evaluacion y gestión de los sistemas acuíferos transfronterizos en las Americas
No abstract available....
Concentrations and distributions of metals associated with dissolved organic matter from the Suwannee River (GA, USA)
M. Keshia Kuhn, Elisabeth Neubauer, Thilo Hofmann, Frank von der Kammer, George R. Aiken, Patricia A. Maurice
2015, Environmental Engineering Science (32) 54-65
Concentrations and distributions of metals in Suwannee River (SR) raw filtered surface water (RFSW) and dissolved organic matter (DOM) processed by reverse osmosis (RO), XAD-8 resin (for humic and fulvic acids [FA]), and XAD-4 resin (for “transphilic” acids) were analyzed by asymmetrical flow field-flow fractionation (AsFlFFF). SR samples were compared...
Arsenic and antimony geochemistry of mine wastes, associated waters and sediments at the Giant Mine, Yellowknife, Northwest Territories, Canada
Skya E. Fawcett, Heather E. Jamieson, D. Kirk Nordstrom, R. Blaine McCleskey
2015, Applied Geochemistry (62) 3-17
Elevated levels of arsenic (As) and antimony (Sb) in water and sediments are legacy residues found downstream from gold-mining activities at the Giant Mine in Yellowknife, Northwest Territories (NWT), Canada. To track the transport and fate of As and Sb, samples of mine-waste from the mill, and surface water, sediment,...
Study 8: Prevalence and load of Nanophyetus salmincola infection in outmigrating steelhead trout from five Puget Sound rivers
M.F. Chen, B.A. Stewart, Kevin Senkvik, Paul Hershberger
2015, Book chapter, Puget Sound steelhead marine survival: 2013-2015 research findings summary
Nanophyetus salmincola is a parasitic trematode, or flatworm, that infects salmonid fishes in the Pacific Northwest, including Washington, Oregon, and portions of California. The adult worm lives in the intestine of fish-eating birds and mammals. Eggs shed into the water hatch into miracidia which penetrate the first intermediate host, one...
Potential role of acetyl-CoA synthetase (acs) and malate dehydrogenase (mae) in the evolution of the acetate switch in Bacteria and Archaea
Elliott P. Barnhart, Marcella A. McClure, Kiki Johnson, Sean Cleveland, Kristopher A. Hunt, Matthew W. Fields
2015, Scientific Reports (5) 1-10
Although many Archaea have AMP-Acs (acetyl-coenzyme A synthetase) and ADP-Acs, the extant methanogenic genus Methanosarcina is the only identified Archaeal genus that can utilize acetate via acetate kinase (Ack) and phosphotransacetylase (Pta). Despite the importance of ack as the potential urkinase in the ASKHA phosphotransferase superfamily, an origin hypothesis does...
Reaction modeling of drainage quality in the Duluth Complex, northern Minnesota, USA
Robert R. Seal, Kim Lapakko, Nadine M. Piatak, Laurel G. Woodruff
2015, Conference Paper
Reaction modeling can be a valuable tool in predicting the long-term behavior of waste material if representative rate constants can be derived from long-term leaching tests or other approaches. Reaction modeling using the REACT program of the Geochemist’s Workbench was conducted to evaluate long-term drainage quality affected by disseminated Cu-Ni-(Co-)-PGM...
Observational changes to the natural flow regime in Lee Creek in relation to altered precipitation patterns and its implication for fishes
Michael R. Gatlin, James M. Long, Donald J. Turton
2015, Proceedings of the Oklahoma Academy of Science (95) 135-146
The natural flow regime is important for structuring streams and their resident ichthyofauna and alterations to this regime can have cascading consequences. We sought to determine if changes in hydrology could be attributed to changes in precipitation in a minimally altered watershed (Lee Creek). The stream flow regime was analyzed...
