Late Quaternary slip rate of the Central Sierra Madre fault, southern California: Implications for slip partitioning and earthquake hazard
Reed J. Burgette, Austin Hanson, Katherine M. Scharer, Tammy M. Rittenour, Devin McPhillips
2019, Earth and Planetary Science Letters (530)
The Sierra Madre fault system accommodates contraction within a large restraining bend area of the San Andreas fault along the northern margin of the Los Angeles metropolitan area in Southern California. Reverse slip along this fault system during earthquakes controls growth of the San Gabriel Mountains and poses a significant...
Coseismic slip and early afterslip of the M6.0 August 24, 2014 South Napa, California, earthquake
Frederick Pollitz, Jessica R. Murray, Sarah E. Minson, Charles W. Wicks Jr., Jerry L. Svarc, Benjamin A. Brooks
2019, Journal of Geophysical Research (124) 11728-11747
We employ strong motion seismograms and static offsets from the Global Positioning System, Interferometric Synthetic Aperture Radar, and other measurements in order to derive a coseismic slip and afterslip model of the M6.0 24 August 2014 South Napa earthquake. This earthquake ruptured an ∼13‐km‐long portion of...
Reactive transport modeling to understand attenuation of arsenic concentrations in anoxic groundwater during Fe(II) oxidation by nitrate
Douglas B. Kent, Richard L. Smith, James Jamieson, J.K. Bohlke, Deborah A. Repert, Henning Prommer
2019, Book chapter, Environmental Arsenic in a Changing World
A previously published field-experimental investigation showed that injection of nitrate in anoxic groundwater that contained aqueous and sediment-bound Fe(II) diminished concentrations of As(V) and As(III) to below drinking-water limits. In the current study, reactive transport modeling confirmed that the observed attenuation was consistent with oxidation of Fe(II) by nitrate, leading...
Toward a theory of connectivity among depressional wetlands of the great plains
Gene Albanese, David A. Haukos
2019, Book chapter, Disturbance ecology and biological diversity: Context, nature and scale
Functions of inland, freshwater depressional wetlands of the Great Plains are driven by natural disturbance in the form of fluctuating water levels or shifts between wet and dry ecological states. The geographically isolated prairie potholes and playas form broad-scale systems or networks that support biodiversity and provide ecological goods and...
A conceptual framework for the identification and characterization of lacustrine spawning habitats for native lake charr Salvelinus namaycush
Stephen Riley, J. E. Marsden, M. S. Ridgway, Christopher Konrad, Steve A. Farha, Thomas R. Binder, Trevor A. Middel, Peter C. Esselman, Charles C. Krueger
2019, Environmental Biology of Fishes (102) 1533-1557
Lake charr Salvelinus namaycush are endemic to the formerly glaciated regions of North America and spawn primarily in lakes, unlike most other Salmoninae. Spawning habitats for lake charr are thought to be characterized by relatively large substrate particle sizes which provide sufficient interstitial spaces for egg incubation, but little is...
Science questions and knowledge gaps to study microbial transport and survival in Asian and African dust plumes reaching North America
Andrew C. Schuerger, David J. Smith, Dale W. Griffin, Daniel A. Jaffe, B. Wawrik, Susannah M. Burrows, Brent Christner, Cristina Gonzalez-Martin, Erin K. Lipp, David G. Schmale III, Hongbin Yu
2019, Aerobiologia (34) 425-435
The Sahara in North Africa and the Gobi and Taklamakan deserts in Asia are the primary sources of mobilized dust in the atmosphere, with regional or global airborne transport estimated at 2 to 5 billion tonnes per year. Annual Asian dust plumes take about 7 to 10 d to cross the...
Landsat time series assessment of invasive annual grasses following energy development
Miguel L. Villarreal, Christopher E. Soulard, Eric Waller
2019, Remote Sensing (11) 1-18
Invasive annual grasses are of concern in many areas of the Western United States because they tolerate resource variability and have high reproductive capacity, with propagules that are readily dispersed in disturbed areas like those created and maintained for energy development. Early-season invasive grasses “green up” earlier than the most...
2016 Chief Joseph hatchery annual report
Andrea Pearl, Matthew Laramie, Casey Baldwin, John Rohrback, Brian Dietz, Pat Phillips, Taylor Scott
2019, Report
The Colville Confederated Tribes (CCT) Chief Joseph Hatchery (CJH) is the fourth hatchery obligated under the Grand Coulee Dam/Dry Falls project, originating in the 1940s. Leavenworth, Entiat, and Winthrop National Fish Hatcheries were built and operated as mitigation for salmon blockage at Grand Coulee Dam, but the fourth hatchery was...
Summary of hydrologic testing, wellbore-flow data, and expanded water-level and water-quality data, 2011–15, Fort Irwin National Training Center, San Bernardino County, California
Joseph M. Nawikas, Jill N. Densmore, David R. O'Leary, David C. Buesch, John A. Izbicki
2019, Scientific Investigations Report 2019-5091
In view of the U.S. Army’s historical reliance and plans to increase demands on groundwater to supply its operations at Fort Irwin National Training Center (NTC), California, coupled with the continuing water-level declines in some developed groundwater basins as a result of pumping, the U.S. Geological Survey (USGS), in cooperation...
Riverscape correlates for distribution of threatened spotfin chub Erimonax monachus in the Tennessee River Basin, USA
Joshuah S. Perkin, W. Keith Gibbs, Josey Lee Ridgway, S. Bradford Cook
2019, Endangered Species Research (40) 91-105
Globally, aquatic biodiversity is imperiled at an increasing rate, especially in diversity hotspots such as the southeastern USA. The spotfin chub Erimonax monachus is a federally threatened minnow with a disjunct distribution resulting from numerous impoundments on the Tennessee River and its tributaries in the heart of the southeastern USA. Recovery actions...
Introduction: Defining and interpreting ecological disturbances
Erik A. Beever, Suresh Andrew Sethi, Suzanne Prange, Dominick DellaSala
2019, Book chapter, Disturbance ecology and biological diversity
Within the field of ecology, disturbance can be defined as a physical force, agent, or process, either abiotic or biotic, causing a perturbation or stress, to an ecological component or system, relative to a specified reference state and/or system. Disturbance drive ecosystems, and our understanding of how disturbances interact with...
Noninvasive identification of cryptic herpetofauna from fecal samples: A novel approach pairing conservation dog surveys and genetic analysis
MJ Statham, DA Woollett, S Fresquez, John M. Pfeiffer, Jonathan Q. Richmond, A Whitelaw, NL Richards, Michael F. Westphal, BN Sacks
2019, Journal of Wildlife Management (84) 66-74
Noninvasive fecal sampling combined with genetic analysis is a powerful technique allowing the study of elusive or otherwise difficult to monitor species without the need for direct contact. While this method is widely used in birds and mammals, it has never been successfully applied on a large scale in reptiles....
Early life exposure to triphenyl phosphate: Effects on thyroid function, growth, and resting metabolic rate of Japanese quail (Coturnix japonica) chicks
Melanie F. Guigueno, J. Head, R. J. Letcher, Natalie Karouna-Renier, Lisa Peters, A.M. Hanas, K.J. Fernie
2019, Environmental Pollution (253) 899-908
Triphenyl phosphate (TPHP; CAS # 115-86-6), a commonly used plasticizer and flame retardant, has been reported in wild birds and identified as a potential high-risk chemical. We exposed Japanese quail (Coturnix japonica) by in ovo injection, and once hatched, orally each day for 5 days to safflower oil (controls) or TPHP dissolved...
Age and growth of Freshwater Drum and Gizzard Shad occupying two reservoir-river complexes with different groundwater contributions
J Dattilo, D. E. Shoup, Shannon K. Brewer
2019, North American Journal of Fisheries Management (39) 1132-1142
Restoring groundwater flow is a management option that improves water temperature regimes and benefits fishes. Although this strategy applies more readily to river systems, the thermal character of reservoirs is heavily influenced by inflowing rivers. We examined differences in age, structure, and growth of both Freshwater...
Eruption age and duration of the ~9 km3 Burney Mountain dacite dome complex, northern California
Drew T. Downs, Michael A. Clynne, Duane E. Champion, L.J. Patrick Muffler
2019, Geological Society of America Bulletin
At ~9 km3, the six dacite domes of Burney Mountain (db1–db6) constitute the most voluminous Quaternary dome complex in the Cascades volcanic arc. Whole-rock geochemistry, electron microprobe, and petrographic data indicate that the domes are magmatically related, which, when integrated with geomorphology and stratigraphy, indicate early (db1, db2, db3)...
Evolutionary dynamics of Ceratonova species (Cnidaria: Myxozoa) reveal different host adaptation strategies
Rachel B. Breyta, Stephen D Atkinson, Jerri L Bartholomew
2019, Infection, Genetics and Evolution (78)
The myxozoan parasite Ceratonova shasta is an important pathogen that infects multiple species of Pacific salmonids. Ongoing genetic surveillance has revealed stable host-parasite relationships throughout the parasite's endemic range. We applied Bayesian phylogenetics to test specific hypotheses about the evolution of these host-parasite relationships within the well-studied Klamath River watershed...
Responses of the odd couple Carquinez, CA, suspension bridge during the Mw6.0 south Napa earthquake of August 24, 2014
Mehmet Celebi, S. Farid Ghahari, Ertugrul Taciroglu
2019, Journal of Civil Structural Health Monitoring (9) 719-739
The behavior of the suspension bridge in Carquinez, CA, during the Mw6.0 24 August 2014 South Napa, CA earthquake is studied. Utilizing data from an extensive array of accelerometers that recorded the earthquake-excited motions, dynamic characteristics such as modes, corresponding frequencies and damping are identified and...
Study design and methods for a wetland condition assessment on U.S. Fish and Wildlife Service fee-title lands in the Prairie Pothole Region of North Dakota, South Dakota, and Montana, USA
Brian Tangen, Sheel Bansal, Rachel R. Fern, Edward S. DeKeyser, Christina L. M. Hargiss, David M. Mushet, Cami S. Dixon
2019, Open-File Report 2019-1118
The U.S. Fish and Wildlife Service (FWS) manages wetlands and grasslands for wildlife habitat throughout the central North American Prairie Pothole Region (PPR). PPR wetlands, or potholes, are widely recognized as critical habitats for North American migratory waterfowl, waterbirds, and other wildlife. Potholes also provide other ecosystem services such as...
Precision mapping of snail habitat provides a powerful indicator of human schistosomiasis transmission
Chelsea L. Wood, Susanne H. Sokolow, Isabel J. Jones, Andrew J Chamberlin, Kevin D. Lafferty, Armand M. Kuris, Merlijn M. T. Jocque, Skylar R. Hopkins, Grant Adams, Julia C Buck, Andrea J Lund, Ana E Garcia-Vedrenne, Evan Fiorenza, Jason R. Rohr, Fiona Allan, Bonnie Webster, Muriel Rabone, Joanne P Webster, Lydie Bandagny, Raphael Ndione, Simon Senghor, Anne-Marie Schacht, Nicolas Jouanard, Gilles Riveau, Giulio A. De Leo
2019, PNAS (449) 23182-23191
Recently, the World Health Organization recognized that efforts to interrupt schistosomiasis transmission through mass drug administration have been ineffective in some regions; one of their new recommended strategies for global schistosomiasis control emphasizes targeting the freshwater snails that transmit schistosome parasites. We sought to identify robust indicators that would enable...
Status of three-dimensional geological mapping and modeling activities in the U.S. Geological Survey
Donald S. Sweetkind, Russell Graymer, D.K. Higley, Oliver S. Boyd
2019, Report, AER/AGS Special Report 112
The U.S. Geological Survey (USGS), created in 1879, is the national geological survey for the United States and the sole science agency within its cabinet-level bureau, the Department of the Interior. The USGS has a broad mission, including: serving the Nation by providing reliable scientific information to describe and understand the Earth; minimize...
Impact of down-dip rupture limit and high stress drop subevents on coseismic land-level change during Cascadia megathrust earthquakes
Erin A. Wirth, Arthur D. Frankel
2019, Geophysical Research Letters (109) 2187-2197
Seismic hazard associated with Cascadia megathrust earthquakes is strongly dependent on the landward rupture extent and heterogeneous fault properties. We use 3-D numerical simulations and a seismic velocity model for Cascadia to estimate coseismic deformation due to ~M9 earthquake scenarios. Our earthquake source model is based on observations of the...
Exploring trends in wet-season precipitation and drought indices in wet, humid and dry regions
Chris Funk, Laura Harrison, Lisa Alexander, Pete Peterson, Ali Behrangi, Gregory Husak
2019, Environmental Research Letters (14)
This study examines wet season droughts using eight products from the FROGS database. The study begins by evaluating wet season precipitation totals and wet day counts at seasonal and decadal time scales. While we find a high level of agreement among the products at a seasonal timescale, evaluations of 10-year...
Targeting wildlife crime interventions through geographic profiling
Stephanie Romanach, Sally C. Faulkner, Michael C.A. Stevens, Peter A. Lindsey, Steven C. Le Comber
2019, Report
Seeing an animal hanging lifelessly from a snare is a heart-wrenching experience. Knowing that most animals caught in snares are left to rot without being used for meat or any other purpose might be worse. Over an eight-year period, 2001–2009, we recorded 10,231 incidents of illegal hunting in a wildlife...
Quantitative guidance for efficient vertical flow measurements at the sediment-water interface using temperature-depth profiles
D. Irvine, B. Kurylyk, Martin A. Briggs
2019, Hydrological Processes (34) 649-661
Upward discharge to surface water bodies can be quantified using analytical models based on temperature-depth (T-z) profiles. The use of sediment T-z profiles is attractive as discharge estimates can be obtained using point-in-time data that are collected inexpensively and rapidly. Previous studies have identified that T-z methods can only be...
Geologic map of the Ferncliff and Louisa quadrangles, Louisa, Fluvanna, and Goochland Counties, Virginia
William C. Burton, Richard W. Harrison, Helen F. Malenda, Frank J. Pazzaglia, E. Allen Crider, Jr.
2019, Scientific Investigations Map 3429
The area encompassed by the geologic map of the Ferncliff and Louisa, Va., 7.5-minute quadrangles includes the hypothetical surface projection of the Quail fault, which is the subsurface fault that was responsible for the 2011 magnitude 5.8 (M5.8) Mineral, Va., earthquake. The mapping shows that the Quail fault appears to...
