Water quality data for national-scale aquatic research: The Water Quality Portal
Emily K. Read, Lindsay Carr, Laura A. DeCicco, Hilary Dugan, Paul C. Hanson, Julia A. Hart, James Kreft, Jordan S. Read, Luke Winslow
2017, Water Resources Research (53) 1735-1745
Aquatic systems are critical to food, security, and society. But, water data are collected by hundreds of research groups and organizations, many of which use nonstandard or inconsistent data descriptions and dissemination, and disparities across different types of water observation systems represent a major challenge for freshwater research. To address...
Preferential flow, diffuse flow, and perching in an interbedded fractured-rock unsaturated zone
John R. Nimmo, Kaitlyn M Creasey, Kimberlie Perkins, Benjamin B. Mirus
2017, Hydrogeology Journal (25) 421-444
Layers of strong geologic contrast within the unsaturated zone can control recharge and contaminant transport to underlying aquifers. Slow diffuse flow in certain geologic layers, and rapid preferential flow in others, complicates the prediction of vertical and lateral fluxes. A simple model is presented, designed to use limited geological site...
Source modeling of the 2015 Mw 7.8 Nepal (Gorkha) earthquake sequence: Implications for geodynamics and earthquake hazards
Daniel E. McNamara, William L. Yeck, William D. Barnhart, V. Schulte-Pelkum, E. Bergman, L. B. Adhikari, Amod Dixit, S. E. Hough, Harley M. Benz, Paul S. Earle
2017, Tectonophysics (714-715) 21-30
The Gorkha earthquake on April 25th, 2015 was a long anticipated, low-angle thrust-faulting event on the shallow décollement between the India and Eurasia plates. We present a detailed multiple-event hypocenter relocation analysis of the Mw 7.8 Gorkha Nepal earthquake sequence, constrained by local seismic stations, and a geodetic rupture...
Lithospheric density structure beneath the Tarim basin and surroundings, northwestern China, from the joint inversion of gravity and topography
Yangfan Deng, William Brower Levandowski, Tim Kusky
2017, Earth and Planetary Science Letters (460) 244-254
Intraplate strain generally focuses in discrete zones, but despite the profound impact of this partitioning on global tectonics, geodynamics, and seismic hazard, the processes by which deformation becomes localized are not well understood. Such heterogeneous intraplate strain is exemplified in central Asia, where the Indo-Eurasian collision has caused widespread deformation...
Reconciling catch differences from multiple fishery independent gill net surveys
Richard T. Kraus, Christopher Vandergoot, Patrick M. Kocovsky, Mark W. Rogers, H. Andrew Cook, Travis O. Brenden
2017, Fisheries Research (188) 17-22
Fishery independent gill net surveys provide valuable demographic information for population assessment and resource management, but relative to net construction, the effects of ancillary species, and environmental variables on focal species catch rates are poorly understood. In response, we conducted comparative deployments with three unique, inter-agency, survey gill nets used...
Book review: Physics of tsunamis
Eric L. Geist
2017, Pure and Applied Geophysics (174) 1521-1521
“Physics of Tsunamis”, second edition, provides a comprehensive analytical treatment of the hydrodynamics associated with the tsunami generation process. The book consists of seven chapters covering 388 pages. Because the subject matter within each chapter is distinct, an abstract appears at the beginning and references appear at the...
Asynchrony in the inter-annual recruitment of lake whitefish Coregonus clupeaformis in the Great Lakes region
Mitchell T. Zischke, David B. Bunnell, Cary D. Troy, Eric K. Berglund, David C. Caroffino, Mark P. Ebener, Ji X. He, Shawn P. Sitar, Tomas O. Hook
2017, Journal of Great Lakes Research (43) 359-369
Spatially separated fish populations may display synchrony in annual recruitment if the factors that drive recruitment success, particularly abiotic factors such as temperature, are synchronised across broad spatial scales. We examined inter-annual variation in recruitment among lake whitefish (Coregonus clupeaformis) populations in lakes Huron, Michigan and Superior using fishery-dependent and...
Restoration handbook for sagebrush steppe ecosystems with emphasis on greater sage-grouse habitat—Part 3. Site level restoration decisions
David A. Pyke, Jeanne C. Chambers, Mike Pellant, Richard F. Miller, Jeffrey L. Beck, Paul S. Doescher, Bruce A. Roundy, Eugene W. Schupp, Steven T. Knick, Mark Brunson, James D. McIver
2017, Circular 1426
Sagebrush steppe ecosystems in the United States currently (2016) occur on only about one-half of their historical land area because of changes in land use, urban growth, and degradation of land, including invasions of non-native plants. The existence of many animal species depends on the existence of sagebrush steppe...
Climate change and the eco-hydrology of fire: Will area burned increase in a warming western USA?
Donald McKenzie, Jeremy S. Littell
2017, Ecological Applications (27) 26-36
Wildfire area is predicted to increase with global warming. Empirical statistical models and process-based simulations agree almost universally. The key relationship for this unanimity, observed at multiple spatial and temporal scales, is between drought and fire. Predictive models often focus on ecosystems in which this relationship appears to be particularly...
Hydrogeology and simulation of groundwater flow and analysis of projected water use for the Canadian River alluvial aquifer, western and central Oklahoma
John H. Ellis, Shana L. Mashburn, Grant M. Graves, Steven M. Peterson, S. Jerrod Smith, Leland T. Fuhrig, Derrick L. Wagner, Jon E. Sanford
2017, Scientific Investigations Report 2016-5180
This report describes a study of the hydrogeology and simulation of groundwater flow for the Canadian River alluvial aquifer in western and central Oklahoma conducted by the U.S. Geological Survey in cooperation with the Oklahoma Water Resources Board. The report (1) quantifies the groundwater resources of the Canadian River alluvial...
Chemistry of diagenetic features analyzed by ChemCam at Pahrump Hills, Gale crater, Mars
Marion Nachon, Nicolas Mangold, Olivier Forni, Linda C. Kah, Agnes Cousin, Roger C. Wiens, Ryan B. Anderson, Diana L. Blaney, Jen G. Blank, Fred J. Calef, Samuel M. Clegg, Cecile Fabre, Martin R. Fisk, Olivier Gasnault, John P. Grotzinger, Rachel Kronyak, Nina L. Lanza, Jeremie Lasue, Laetitia Le Deit, Stephane Le Mouelic, Sylvestre Maurice, Pierre-Yves Meslin, D. Z. Oehler, Valerie Payre, William Rapin, Susanne Schroder, Katherine M. Stack, Dawn Sumner
2017, Icarus (281) 121-136
The Curiosity rover's campaign at Pahrump Hills provides the first analyses of lower Mount Sharp strata. Here we report ChemCam elemental composition of a diverse assemblage of post-depositional features embedded in, or cross-cutting, the host rock. ChemCam results demonstrate their compositional diversity, especially compared to the surrounding host rock: (i)...
Improved accuracy in quantitative laser-induced breakdown spectroscopy using sub-models
Ryan B. Anderson, Samuel M. Clegg, Jens Frydenvang, Roger C. Wiens, Scott M. McLennan, Richard V. Morris, Bethany L. Ehlmann, M. Darby Dyar
2017, Spectrochimica Acta Part B: Atomic Spectroscopy (129) 49-57
Accurate quantitative analysis of diverse geologic materials is one of the primary challenges faced by the Laser-Induced Breakdown Spectroscopy (LIBS)-based ChemCam instrument on the Mars Science Laboratory (MSL) rover. The SuperCam instrument on the Mars 2020 rover, as well as other LIBS instruments developed for geochemical analysis on Earth or...
Geologic assessment of undiscovered oil and gas resources—Lower Cretaceous Albian to Upper Cretaceous Cenomanian carbonate rocks of the Fredericksburg and Washita Groups, United States Gulf of Mexico Coastal Plain and State Waters
Sharon M. Swanson, Catherine B. Enomoto, Kristin O. Dennen, Brett J. Valentine, Steven M. Cahan
2017, Open-File Report 2016-1199
In 2010, the U.S. Geological Survey (USGS) assessed Lower Cretaceous Albian to Upper Cretaceous Cenomanian carbonate rocks of the Fredericksburg and Washita Groups and their equivalent units for technically recoverable, undiscovered hydrocarbon resources underlying onshore lands and State Waters of the Gulf Coast region of the United States. This assessment...
Computer modelling for ecosystem service assessment
Robert Dunford, Paula A. Harrison, Kenneth J. Bagstad
2017, Book chapter, Mapping ecosystem services
Computer models are simplified representations of the environment that allow biophysical, ecological, and/or socio-economic characteristics to be quantified and explored. Modelling approaches differ from mapping approaches (Chapter 5) as (i) they are not forcibly spatial (although many models do produce spatial outputs); (ii) they focus on understanding and quantifying the...
Water, Energy, and Biogeochemical Model (WEBMOD), user’s manual, version 1
Richard M. T. Webb, David L. Parkhurst
2017, Techniques and Methods 6-B35
The Water, Energy, and Biogeochemical Model (WEBMOD) uses the framework of the U.S. Geological Survey (USGS) Modular Modeling System to simulate fluxes of water and solutes through watersheds. WEBMOD divides watersheds into model response units (MRU) where fluxes and reactions are simulated for the following eight hillslope reservoir types: canopy;...
Electrical resistivity investigation of fluvial geomorphology to evaluate potential seepage conduits to agricultural lands along the San Joaquin River, Merced County, California, 2012–13
Krishangi D. Groover, Matthew K. Burgess, James F. Howle, Steven P. Phillips
2017, Scientific Investigations Report 2016-5172
Increased flows in the San Joaquin River, part of the San Joaquin River Restoration Program, are designed to help restore fish populations. However, increased seepage losses could result from these higher restoration flows, which could exacerbate existing drainage problems in neighboring agricultural lands and potentially damage crops. Channel deposits of...
Experts correctly describe demography associated with historical decline of the endangered Indiana bat, but not recent period of stationarity
Wayne E. Thogmartin, Carol A. Sanders-Reed, Jennifer Szymanski, Lori Pruitt, Michael C. Runge
2017, PeerJ (5)
Demographic characteristics of bats are often insufficiently described for modeling populations. In data poor situations, experts are often relied upon for characterizing ecological systems. In concert with the development of a matrix model describing Indiana bat (Myotis sodalis) demography, we elicited estimates for parameterizing this model from 12 experts. We...
Comparing stream-specific to generalized temperature models to guide salmonid management in a changing climate
Andrew K. Carlson, William W. Taylor, Kelsey M. Hartikainen, Dana M. Infante, Beard Jr., Abigail Lynch
2017, Reviews in Fish Biology and Fisheries (2) 443-462
Global climate change is predicted to increase air and stream temperatures and alter thermal habitat suitability for growth and survival of coldwater fishes, including brook charr (Salvelinus fontinalis), brown trout (Salmo trutta), and rainbow trout (Oncorhynchus mykiss). In a changing climate, accurate stream temperature modeling is increasingly important for sustainable...
Characterization of peak streamflows and flood inundation of selected areas in Louisiana from the August 2016 flood
Kara M. Watson, John B. Storm, Brian K. Breaker, Claire E. Rose
2017, Scientific Investigations Report 2017-5005
Heavy rainfall occurred across Louisiana and southwestern Mississippi in August 2016 as a result of a slow-moving area of low pressure and a high amount of atmospheric moisture. The storm caused major flooding in the southern portions of Louisiana including areas surrounding Baton Rouge and Lafayette. Flooding occurred along the...
A method to assess the population-level consequences of wind energy facilities on bird and bat species
James E. Diffendorfer, Julie A. Beston, Matthew D. Merrill, Jessica C. Stanton, M.D. Corum, Scott R. Loss, Wayne E. Thogmartin, Douglas H. Johnson, Richard A. Erickson, Kevin W. Heist
2017, Book chapter, Wind energy and wildlife interactions
For this study, a methodology was developed for assessing impacts of wind energy generation on populations of birds and bats at regional to national scales. The approach combines existing methods in applied ecology for prioritizing species in terms of their potential risk from wind energy facilities and estimating impacts of...
Nonlethal laparoscopic detection of intersex (testicular oocytes) in largemouthbass (Micropterus salmoides) and smallmouth bass (Micropterus dolomieu)
Vicki S. Blazer, Alexander H Macleod, Mark A Matsche, Lance T Yonkos
2017, Environmental Toxicology and Chemistry (36) 1924-1933
Intersex in wild fish populations has received considerable attention in the scientific literature and public media. Conventional detection of testicular oocytes (TO), the presence of immature oocytes within testis of male fish, employs transverse sectioning of excised testis and is lethal. This present study used a non-lethal laparoscopic technique to...
In situ assessment of lampricide toxicity to age-0 lake sturgeon
Lisa M. O’Connor, Thomas C. Pratt, Todd B. Steeves, Brian Stephens, Michael A. Boogaard, Cheryl Kaye
2017, Journal of Great Lakes Research (43) 189-198
The lampricides 3-trifluoromethyl-4-nitrophenol (TFM) and 2′, 5-dichloro-4′-nitrosalicylanilide (niclosamide) are used to control sea lamprey (Petromyzon marinus), an invasive species in the Great Lakes. Age-0 lake sturgeon (Acipenser fulvescens), a species of conservationconcern, share similar stream habitats with larval sea lampreys and these streams can be...
Modeled ecohydrological responses to climate change at seven small watersheds in the northeastern United States
Afshin Pourmokhtarian, Charles T. Driscoll, John L. Campbell, Katharine Hayhoe, Anne M. K. Stoner, Mary Beth Adams, Douglas A. Burns, Ivan Fernandez, Myron J. Mitchell, James B. Shanley
2017, Global Change Biology (23) 840-856
A cross-site analysis was conducted on seven diverse, forested watersheds in the northeastern United States to evaluate hydrological responses (evapotranspiration, soil moisture, seasonal and annual streamflow, and water stress) to projections of future climate. We used output from four atmosphere–ocean general circulation models (AOGCMs; CCSM4, HadGEM2-CC, MIROC5, and MRI-CGCM3) included...
A global probabilistic tsunami hazard assessment from earthquake sources
Gareth Davies, Jonathan Griffin, Finn Lovholt, Sylfest Glimsdal, Carl Harbitz, Hong Kie Thio, Stefano Lorito, Roberto Basili, Jacopo Selva, Eric L. Geist, Maria Ana Baptista
2017, Geological Society, London, Special Publications (456) 219-244
Large tsunamis occur infrequently but have the capacity to cause enormous numbers of casualties, damage to the built environment and critical infrastructure, and economic losses. A sound understanding of tsunami hazard is required to underpin management of these risks, and while tsunami hazard assessments are typically conducted at regional or...
Building the vegetation drought response index for Canada (VegDRI-Canada) to monitor agricultural drought: first results
Tsegaye Tadesse, Catherine Champagne, Brian D. Wardlow, Trevor A. Hadwen, Jesslyn F. Brown, Getachew B. Demisse, Yared A. Bayissa, Andrew M. Davidson
2017, GIScience and Remote Sensing (54) 230-257
Drought is a natural climatic phenomenon that occurs throughout the world and impacts many sectors of society. To help decision-makers reduce the impacts of drought, it is important to improve monitoring tools that provide relevant and timely information in support of drought mitigation decisions. Given that drought is a complex...
