Basin-scale phenology and effects of climate variability on global timing of initial seaward migration of Atlantic salmon (Salmo salar)
Jaime Otero, Jan Henning L’Abee-Lund, Theodore Castro-Santos, Kjell Leonardsson, Geir O. Storvik, Bror Jonsson, J. Brian Dempson, Ian C. Russell, Arne J. Jensen, Jean-Luc Bagliniere, Mélanie Dionne, John D. Armstrong, Atso Romakkaniemi, Benjamin H. Letcher, John F. Kocik, Jaakko Erkinaro, Russell Poole, Ger Rogan, Hans Lundqvist, Julian C. MacLean, Erkki Jokikokko, Jo Vegar Arnekleiv, Richard J. Kennedy, Eero Niemela, Pablo Caballero, Paul A. Music, Thorolfur Antonsson, Sigurdur Gudjonsson, Alexey E. Veselov, Anders Lamberg, Steve Groom, Benjamin H. Taylor, Malcolm Taberner, Mary Dillane, Fridthjofur Arnason, Gregg E. Horton, Nils A. Hvidsten, Ingi R. Jonsson, Nina Jonsson, Simon McKelvey, T. F. Naesje, Oystein Skaala, Gordon W. Smith, Harald Saegrov, N. C. Stenseth, Leif Asbjørn Vøllestad
2014, Global Change Biology (20) 61-75
Migrations between different habitats are key events in the lives of many organisms. Such movements involve annually recurring travel over long distances usually triggered by seasonal changes in the environment. Often, the migration is associated with travel to or from reproduction areas to regions of growth. Young anadromous Atlantic salmon...
Challenges and opportunities in protecting the Obed Wild and Scenic River
J. C. Hughes, J. R. Duncan, B. C. Harrold, Rodney R. Knight, William J. Wolfe
2014, Dynamiques Environnementales (31) 64-79
No abstract available....
Uncertainty and risk evaluation during the exploration stage of geothermal development
Jeffrey B. Witter, Whitney J. Trainor-Guitton, Drew L. Siler
2014, Conference Paper, Proceedings, Forty-Fourth Workshop on Geothermal Reservoir Engineering
Quantifying and representing uncertainty for geothermal systems is often ignored, in practice, during the exploration phase of a geothermal development project. We propose that this occurs potentially because the task seems so formidable. The primary goal of this paper is to initiate a dialogue within the geothermal community about: which...
The 17 May 2012 M4.8 earthquake near Timpson, East Texas: An event possibly triggered by fluid injection
Cliff Frohlich, William L. Ellsworth, Wesley Brown, Michael Brunt, James Luetgert, Tim G. MacDonald, Steven Walters
2014, Journal of Geophysical Research B: Solid Earth (119) 581-593
This study summarizes our investigation of the 17 May 2012 MW-RMT4.8 earthquake near Timpson, Texas, the largest earthquake recorded historically in eastern Texas. To identify preshocks and aftershocks of the 17 May event we examined the arrivals recorded at Nacogdoches (NATX) 30 km from the 17 May epicenter, at nearby...
Geology and geophysics applied to groundwater hydrology at Fort Irwin, California
David C. Buesch, editor(s)
2014, Open-File Report 2013-1024
Geologic and geophysical investigations in the vicinity of Fort Irwin National Training Center, California, have been completed in support of groundwater investigations, and are presented in eight chapters of this report. A generalized surficial geologic map along with field and borehole investigations conducted during 2010–11 provide a lithostratigraphic and structural...
Time-domain electromagnetic surveys at Fort Irwin, San Bernardino County, California, 2010–12
Matthew K. Burgess, Paul A. Bedrosian
David C. Buesch, editor(s)
2014, Open-File Report 2013-1024-F
Between 2010 and 2012, a total of 79 time-domain electromagnetic (TEM) soundings were collected in 12 groundwater basins in the U.S. Army Fort Irwin National Training Center (NTC) study area to help improve the understanding of the hydrogeology of the NTC. The TEM data are discussed in this chapter in...
Optimal water depth management on river-fed National Wildlife Refuges in a changing climate
Samuel Nicol, Brad Griffith, Jane E. Austin, Christine M. Hunter
2014, Climatic Change (124) 271-284
The prairie pothole region (PPR) in the north-central United States and south-central Canada constitutes the most important waterfowl breeding area in North America. Projected long-term changes in precipitation and temperature may alter the drivers of waterfowl abundance: wetland availability and emergent vegetation cover. Previous studies have focused on isolated wetland...
Modeling ash fall distribution from a Yellowstone supereruption
Larry G. Mastin, Alexa R. Van Eaton, Jacob B. Lowenstern
2014, Geochemistry, Geophysics, Geosystems (15) 3459-3475
We used the volcanic ash transport and dispersion model Ash3d to estimate the distribution of ashfall that would result from a modern-day Plinian supereruption at Yellowstone volcano. The simulations required modifying Ash3d to consider growth of a continent-scale umbrella cloud and its interaction with ambient wind fields. We simulated eruptions...
Laboratory constraints on models of earthquake recurrence
Nicholas M. Beeler, Terry Tullis, Jenni Junger, Brian D. Kilgore, David L. Goldsby
2014, Journal of Geophysical Research (119) 8770-8791
In this study, rock friction ‘stick-slip’ experiments are used to develop constraints on models of earthquake recurrence. Constant-rate loading of bare rock surfaces in high quality experiments produces stick-slip recurrence that is periodic at least to second order. When the loading rate is varied, recurrence is approximately inversely proportional to...
Empirical models for predicting volumes of sediment deposited by debris flows and sediment-laden floods in the transverse ranges of southern California
Joseph E. Gartner, Susan H. Cannon, Paul M Santi
2014, Engineering Geology (176) 45-56
Debris flows and sediment-laden floods in the Transverse Ranges of southern California pose severe hazards to nearby communities and infrastructure. Frequent wildfires denude hillslopes and increase the likelihood of these hazardous events. Debris-retention basins protect communities and infrastructure from the impacts of debris flows and sediment-laden floods and also provide...
U.S. Geological Survey external quality-assurance project report for the National Atmospheric Deposition Program / National Trends Network and Mercury Deposition Network, 2011-2012
Gregory A. Wetherbee, RoseAnn Martin
2014, Report
The U.S. Geological Survey operated six distinct programs to provide external quality-assurance monitoring for the National Atmospheric Deposition Program (NADP) / National Trends Network (NTN) and Mercury Deposition Network (MDN) during 2011–2012. The field-audit program assessed the effects of onsite exposure, sample handling, and shipping on the chemistry of NTN...
USGS/EPA collection protocol for bacterial pathogens in soil
Dale W. Griffin, F.L. Shaefer, Charlena Bowling, Dino Mattorano, Tonya Nichols, Erin Silvestri
2014, Report
This Sample Collection Procedure (SCP) describes the activities and considerations for the collection of bacterial pathogens from representative surface soil samples (0-5 cm). This sampling depth can be reached without the use of a drill rig, direct-push technology, or other mechanized equipment. This procedure can be used in most soil...
Response to L. Land comment on Bricker, Rice, Bricker (2014) From Headwaters to Coast: Influence of human activities on water quality of the Potomac River Estuary. Aquatic Geochemistry 20: 291-324
Suzanne B. Bricker, Karen C. Rice, III Owen Bricker Owen, P.
2014, Aquatic Geochemistry (20) 459-463
Overabundance of nutrients is considered one of the top challenges to most populated coastal water bodies, including Chesapeake Bay (Executive Order 13508). As scientists, one of our responsibilities is to contribute to the discussion and evaluation of management actions that have the potential to decrease pollution with concomitant improvement of...
Groundwater conditions in Utah, spring of 2014
Carole B. Burden, Adam S. Birken, Steven J. Gerner, John P. Carricaburu, V. Noah Derrick, Paul Downhour, Lincoln Smith, Robert J. Eacret, Travis L. Gibson, Bradley A. Slaugh, Nickolas R. Whittier, James H. Howells, Howard K. Christiansen, Martel J. Fisher
2014, Cooperative Investigations Report 55
This is the fifty-first in a series of annual reports that describe groundwater conditions in Utah. Reports in this series, published cooperatively by the U.S. Geological Survey and the Utah Department of Natural Resources, Division of Water Rights, and the Utah Department of Environmental Quality, Division of Water Quality, provide...
Comparison of mineral weathering and biomass nutrient uptake in two small forested watersheds underlain by quartzite bedrock, Catoctin Mountain, Maryland, USA
Karen C. Rice, Jason R. Price
2014, Aquatic Geochemistry (20) 225-242
To quantify chemical weathering and biological uptake, mass-balance calculations were performed on two small forested watersheds located in the Blue Ridge Physiographic Province in north-central Maryland, USA. Both watersheds, Bear Branch (BB) and Fishing Creek Tributary (FCT), are underlain by relatively unreactive quartzite bedrock. Such unreactive bedrock and associated low...
Fate of nutrients in shallow groundwater receiving treated septage, Malibu, CA
John A. Izbicki
2014, Groundwater (52) 218-233
Treated wastewater discharged from more than 400 onsite wastewater treatment systems (OWTS) near the Civic Center area of Malibu, California, 40 km west of downtown Los Angeles, composes 28% of the recharge to a 3.4 km2 alluvial aquifer. On the basis of δ18O and δD data, the fraction of wastewater in...
Fine scale habitat use by age-1 stocked muskellunge and wild northern pike in an upper St. Lawrence River bay
John M. Farrell, Kevin L. Kapuscinski, H. Brian Underwood
2014, Journal of Great Lakes Research (40, Supplement 2) 148-153
Radio telemetry of stocked muskellunge (n = 6) and wild northern pike (n = 6) was used to track late summer and fall movements from a common release point in a known shared nursery bay to test the hypothesis that age-1 northern pike and stocked muskellunge segregate and have different habitat affinities. Water depth,...
Influences of glacial melt and permafrost thaw on the age of dissolved organic carbon in the Yukon River basin
George R. Aiken, Robert G.M. Spencer, Robert G. Striegl, Paul F. Schuster, Peter A. Raymond
2014, Global Biogeochemical Cycles (28) 525-537
Responses of near-surface permafrost and glacial ice to climate change are of particular significance for understanding long-term effects on global carbon cycling and carbon export by high-latitude northern rivers. Here we report Δ14C-dissolved organic carbon (DOC) values and dissolved organic matter optical data for the Yukon River, 15...
Collaborative modelling and integrated decision support system analysis of a developed terminal lake basin
Richard G. Niswonger, Kip K. Allander, Anne E. Jeton
2014, Journal of Hydrology (517) 521-537
A terminal lake basin in west-central Nevada, Walker Lake, has undergone drastic change over the past 90 yrs due to upstream water use for agriculture. Decreased inflows to the lake have resulted in 100 km2 decrease in lake surface area and a total loss of fisheries due to salinization. The ecologic health of...
Reduced disease in black abalone following mass mortality: Phage therapy and natural selection
Glenn R. VanBlaricom
2014, Frontiers in Microbiology (5) 10
Black abalone, Haliotis cracherodii, populations along the NE Pacific ocean have declined due to the rickettsial disease withering syndrome (WS). Natural recovery on San Nicolas Island (SNI) of Southern California suggested the development of resistance in island populations. Experimental challenges in one treatment demonstrated that progeny of disease-selected black abalone from...
Eruptive and tectonic history of the Endeavour Segment, Juan de Fuca Ridge, based on AUV mapping data and lava flow ages
David A. Clague, Brian M Dreyer, Jennifer B. Paduan, Julie F Martin, David W Caress, James B. Gillespie, Deborah S Kelley, Hans Thomas, Ryan A Portner, John R. Delaney, Thomas P. Guilderson, Mary L. McGann
2014, Geochemistry, Geophysics, Geosystems (15) 3364-3391
High-resolution bathymetric surveys from autonomous underwater vehicles ABE and D. Allan B. were merged to create a coregistered map of 71.7 km2 of the Endeavour Segment of the Juan de Fuca Ridge. Radiocarbon dating of foraminifera in cores from three dives of remotely operated vehicle Doc Ricketts provide minimum eruption...
The rock abrasion record at Gale Crater: Mars Science Laboratory results from Bradbury Landing to Rocknest
N.T. Bridges, F.J. Calef III, B.W. Hallett, Kenneth E. Herkenhoff, N.L. Lanza, S. Le Mouélic, C.E. Newman, D.L. Blaney, de Pablo, G.A. Kocurek, Y. Langevin, K.W. Lewis, N. Mangold, S. Maurice, P.-Y. Meslin, P. Pinet, N.O. Renno, CM.S. Rice, M.E. Richardson, V. Sautter, R.S. Sletten, R. C. Wiens, R.A. Yingst
2014, Journal of Geophysical Research E: Planets (119) 1374-1389
Ventifacts, rocks abraded by wind-borne particles, are found in Gale Crater, Mars. In the eastward drive from “Bradbury Landing” to “Rocknest,” they account for about half of the float and outcrop seen by Curiosity's cameras. Many are faceted and exhibit abrasion textures found at a range of scales, from submillimeter...
Stress-based aftershock forecasts made within 24h post mainshock: Expected north San Francisco Bay area seismicity changes after the 2014 M=6.0 West Napa earthquake
Thomas E. Parsons, Margaret Segou, Volkan Sevilgen, Kevin Milner, Edward H. Field, Shinji Toda, Ross S. Stein
2014, Geophysical Research Letters (41) 8792-8799
We calculate stress changes resulting from the M = 6.0 West Napa earthquake on north San Francisco Bay area faults. The earthquake ruptured within a series of long faults that pose significant hazard to the Bay area, and we are thus concerned with potential increases in the probability of a large earthquake through...
Survival and reproduction of myxobolus cerebralis-resistant Rainbow Trout introduced to the colorado river and increased resistance of age-0 progeny
Dana L. Winkelman, Eric R. Fetherman, Melinda R. Baerwald, George J. Schisler
2014, PLoS ONE
Myxobolus cerebralis caused severe declines in rainbow trout populations across Colorado following its introduction in the 1980s. One promising approach for the recovery of Colorado’s rainbow trout populations has been the production of rainbow trout that are genetically resistant to the parasite. We introduced one of these resistant crosses, known as...
Evaluation of catch-and-release regulations on Brook Trout in Pennsylvania streams
Jason Detar, David Kristine, Tyler Wagner, Tom Greene
2014, North American Journal of Fisheries Management (34) 49-56
In 2004, the Pennsylvania Fish and Boat Commission implemented catch-and-release (CR) regulations on headwater stream systems to determine if eliminating angler harvest would result in an increase in the number of adult (≥100 mm) or large (≥175 mm) Brook Trout Salvelinus fontinalis. Under the CR regulations, angling was permitted on a year-round basis,...
