Geodetic slip model of the 3 September 2016 Mw 5.8 Pawnee, Oklahoma, earthquake: Evidence for fault‐zone collapse
Frederick Pollitz, Charles W. Wicks Jr., Martin Schoenball, William L. Ellsworth, Mark Murray
2017, Seismological Research Letters (88) 983-993
The 3 September 2016 Mw 5.8 Pawnee earthquake in northern Oklahoma is the largest earthquake ever recorded in Oklahoma. The coseismic deformation was measured with both Interferometric Synthetic Aperture Radar and Global Positioning System (GPS), with measureable signals of order 1 cm and 1 mm, respectively. We derive a coseismic slip model from Sentinel‐1A...
Projecting community changes in hazard exposure to support long-term risk reduction: A case study of tsunami hazards in the U.S. Pacific Northwest
Benjamin M. Sleeter, Nathan J. Wood, Christopher E. Soulard, Tamara Wilson
2017, International Journal of Disaster Risk Reduction (22) 10-22
Tsunamis have the potential to cause considerable damage to communities along the U.S. Pacific Northwest coastline. As coastal communities expand over time, the potential societal impact of tsunami inundation changes. To understand how community exposure to tsunami hazards may change in coming decades, we projected future development (i.e. urban, residential,...
The recent warming trend in North Greenland
Anais J. Orsi, Kenji Kawamura, Valerie Masson-Delmotte, Xavier Fettweis, Jason E. Box, Dorthe Dahl-Jensen, Gary D. Clow, Amaelle Landais, Jeffrey P. Severinghaus
2017, Geophysical Research Letters (44) 6235-6243
The Arctic is among the fastest warming regions on Earth, but it is also one with limited spatial coverage of multidecadal instrumental surface air temperature measurements. Consequently, atmospheric reanalyses are relatively unconstrained in this region, resulting in a large spread of estimated 30 year recent warming trends, which limits their use...
Assessment of frequency and duration of point counts when surveying for golden eagle presence
Ben R. Skipper, Clint W. Boal, Jo-Szu Tsai, Mark R. Fuller
2017, Wildlife Society Bulletin (41) 212-223
We assessed the utility of the recommended golden eagle (Aquila chrysaetos) survey methodology in the U.S. Fish and Wildlife Service 2013 Eagle Conservation Plan Guidance. We conducted 800-m radius, 1-hr point-count surveys broken into 20-min segments, during 2 sampling periods in 3 areas within the Intermountain West of the United...
Calculation of in situ acoustic sediment attenuation using off-the-shelf horizontal ADCPs in low concentration settings
Dan Haught, Jeremy G. Venditti, Scott Wright
2017, Water Resources Research (53) 5017-5037
The use of “off-the-shelf” acoustic Doppler velocity profilers (ADCPs) to estimate suspended sediment concentration and grain-size in rivers requires robust methods to estimate sound attenuation by suspended sediment. Theoretical estimates of sediment attenuation require a priori knowledge of the concentration and grain-size distribution (GSD), making the method impractical to apply...
Finite‐fault Bayesian inversion of teleseismic body waves
Brandon Clayton, Stephen H. Hartzell, Morgan P. Moschetti, Sarah E. Minson
2017, Bulletin of the Seismological Society of America (107) 1526-1544
Inverting geophysical data has provided fundamental information about the behavior of earthquake rupture. However, inferring kinematic source model parameters for finite‐fault ruptures is an intrinsically underdetermined problem (the problem of nonuniqueness), because we are restricted to finite noisy observations. Although many studies use least‐squares techniques to make the finite‐fault problem...
Enclosed nests may provide greater thermal than nest predation benefits compared with open nests across latitudes
Thomas E. Martin, Andy J. Boyce, Karolina Fierro-Calderon, Adam E. Mitchell, Connor E. Armstad, James C. Mouton, Evertius E. Bin Soudi
2017, Functional Ecology (31) 1231-1240
Nest structure is thought to provide benefits that have fitness consequences for several taxa. Traditionally, reduced nest predation has been considered the primary benefit underlying evolution of nest structure, whereas thermal benefits have been considered a secondary or even non-existent factor. Yet, the relative roles of these...
Dynamic oceanography determines fine scale foraging behavior of Masked Boobies in the Gulf of Mexico
Caroline L. Poli, Autumn-Lynn Harrison, Adriana Vallarino, Patrick D. Gerard, Patrick G.R. Jodice
2017, PLoS ONE (12)
During breeding, foraging marine birds are under biological, geographic, and temporal constraints. These contraints require foraging birds to efficiently process environmental cues derived from physical habitat features that occur at nested spatial scales. Mesoscale oceanography in particular may change rapidly within and between breeding seasons, and findings from well-studied systems...
Otolith marking of juvenile shortnose gar by immersion in oxytetracycline
Richard A. Snow, James M. Long
2017, North American Journal of Fisheries Management (37) 724-728
Oxytetracycline (OTC) has been used to mark a variety of fish species at multiple developmental stages; however, there is little information on batch-marking Lepisosteidae. Juvenile Shortnose Gar Lepisosteus platostomus (53 ± 3 mm TL) were seined from an Oklahoma State University research pond and transported to the Oklahoma Fishery Research...
Sources and ages of fine-grained sediment to streams using fallout radionuclides in the Midwestern United States
Allen C. Gellis, Christopher C. Fuller, Peter C. Van Metre
2017, Journal of Environmental Management (194) 73-85
Fallout radionuclides, 7Be and 210Pbex, sampled in bed sediment for 99 watersheds in the Midwestern region of the United States and in 15 samples of suspended sediment from 3 of these watersheds were used to partition upland from channel sources and to estimate the age or the time since the surface-derived portion...
A land cover change detection and classification protocol for updating Alaska NLCD 2001 to 2011
Suming Jin, Limin Yang, Zhe Zhu, Collin G. Homer
2017, Remote Sensing of Environment (195) 44-55
Monitoring and mapping land cover changes are important ways to support evaluation of the status and transition of ecosystems. The Alaska National Land Cover Database (NLCD) 2001 was the first 30-m resolution baseline land cover product of the entire state derived from circa 2001 Landsat imagery and geospatial ancillary data....
Precision and accuracy of age estimates obtained from anal fin spines, dorsal fin spines, and sagittal otoliths for known-age largemouth bass
Zachary B. Klein, Timothy F. Bonvechio, Bryant R. Bowen, Michael C. Quist
2017, Southeastern Naturalist (16) 225-234
Sagittal otoliths are the preferred aging structure for Micropterus spp. (black basses) in North America because of the accurate and precise results produced. Typically, fisheries managers are hesitant to use lethal aging techniques (e.g., otoliths) to age rare species, trophy-size fish, or when sampling in small impoundments where populations are small. Therefore,...
Sediment source fingerprinting as an aid to catchment management: A review of the current state of knowledge and a methodological decision-tree for end-users
A.L Collins, S. Pulley, I.D.L Foster, Allen C. Gellis, P. Porto, A.J. Horowitz
2017, Journal of Environmental Management (194) 86-108
The growing awareness of the environmental significance of fine-grained sediment fluxes through catchment systems continues to underscore the need for reliable information on the principal sources of this material. Source estimates are difficult to obtain using traditional monitoring techniques, but sediment source fingerprinting or tracing procedures, have emerged as a...
Evaluating species-specific changes in hydrologic regimes: an iterative approach for salmonids in the Greater Yellowstone Area (USA)
Robert K. Al-Chokhachy, Adam J. Sepulveda, Andrew M. Ray, David P. Thoma, Michael T. Tercek
2017, Reviews in Fish Biology and Fisheries (27) 425-441
Despite the importance of hydrologic regimes to the phenology, demography, and abundance of fishes such as salmonids, there have been surprisingly few syntheses that holistically assess regional, species-specific trends in hydrologic regimes within a framework of climate change. Here, we consider hydrologic regimes within the Greater Yellowstone Area in the...
Forecasted range shifts of arid-land fishes in response to climate change
James E. Whitney, Joanna B. Whittier, Craig P. Paukert, Julian D. Olden, Angela L. Strecker
2017, Reviews in Fish Biology and Fisheries (27) 463-479
Climate change is poised to alter the distributional limits, center, and size of many species. Traits may influence different aspects of range shifts, with trophic generality facilitating shifts at the leading edge, and greater thermal tolerance limiting contractions at the trailing edge. The generality of relationships between traits and range...
The morphology of transverse aeolian ridges on Mars
Paul Geissler, Justin T. Wilgus
2017, Aeolian Research (26) 63-71
A preliminary survey of publicly released high resolution digital terrain models (DTMs) produced by the High Resolution Imaging Science Experiment (HiRISE) camera on Mars Reconnaissance Orbiter identified transverse aeolian ridges (TARs) in 154 DTMs in latitudes from 50°S to 40°N. Consistent with previous surveys, the TARs identified in HiRISE DTMs...
A new mechanistic approach for the further development of a population with established size bimodality
Lisa Heerman, Donald L. DeAngelis, Jost Borcherding
2017, PLoS ONE (12) 1-18
Usually, the origin of a within-cohort bimodal size distribution is assumed to be caused by initial size differences or by one discrete period of accelerated growth for one part of the population. The aim of this study was to determine if more continuous pathways exist allowing shifts from the small...
Quantile regression of microgeographic variation in population characteristics of an invasive vertebrate predator
Shane R. Siers, Julie A. Savidge, Robert Reed
2017, PLoS ONE (12) 1-19
Localized ecological conditions have the potential to induce variation in population characteristics such as size distributions and body conditions. The ability to generalize the influence of ecological characteristics on such population traits may be particularly meaningful when those traits influence prospects for successful management interventions. To characterize variability in invasive...
Length limits fail to restructure a Largemouth Bass population: A 28‐year case history
Leandro E. Miranda, M.E. Colvin, A. C. Shamaskin, L. A. Bull, T. Holman, R. Jones
2017, North American Journal of Fisheries Management (37) 624-632
Length limits have been implemented by fisheries management agencies to achieve population density, size structure, and angler satisfaction objectives. By redirecting harvest towards or away from particular length‐ or age‐groups, length limits rely on harvest by anglers to maintain a population at or near a desired state. The fish population...
Erosion characteristics and horizontal variability for small erosion depths in the Sacramento-San Joaquin River Delta, California, USA
David H. Schoellhamer, Andrew J. Manning, Paul A. Work
2017, Ocean Dynamics (67) 799-811
Erodibility of cohesive sediment in the Sacramento-San Joaquin River Delta (Delta) was investigated with an erosion microcosm. Erosion depths in the Delta and in the microcosm were estimated to be about one floc diameter over a range of shear stresses and times comparable to half of a typical tidal cycle....
Complex mixtures of Pesticides in Midwest U.S. streams indicated by POCIS time-integrating samplers
Peter C. Van Metre, David Alvarez, Barbara Mahler, Lisa H. Nowell, Mark W. Sandstrom, Patrick W. Moran
2017, Environmental Pollution (220) 431-440
The Midwest United States is an intensely agricultural region where pesticides in streams pose risks to aquatic biota, but temporal variability in pesticide concentrations makes characterization of their exposure to organisms challenging. To compensate for the effects of temporal variability, we deployed polar organic chemical integrative samplers (POCIS) in 100...
Assessing changes in the physico-chemical properties and fluoride adsorption capacity of activated alumina under varied conditions
Laura Craig, Lisa L. Stillings, David L. Decker
2017, Applied Geochemistry (76) 112-123
Adsorption using activated alumina is a simple method for removing fluoride from drinking water, but to be cost effective the adsorption capacity must be high and effective long-term. The intent of this study was to assess changes in its adsorption capacity under varied conditions. This...
Historical patterns of acidification and increasing CO2 flux associated with Florida springs
Kira E. Barrera, Lisa L. Robbins
2017, Limnology and Oceanography (62) 2404-2417
Florida has one of the highest concentrations of springs in the world, with many discharging into rivers and predominantly into eastern Gulf of Mexico coast, and they likely influence the hydrochemistry of these adjacent waters; however, temporal and spatial trends have not been well studied. We present over 20 yr...
Mangrove species' responses to winter air temperature extremes in China
Luzhen Chen, Wenqing Wang, Qingshun Q. Li, Yihui Zhang, Shengchang Yang, Michael J. Osland, Jinliang Huang, Congjiao Peng
2017, Ecosphere (8)
The global distribution and diversity of mangrove forests is greatly influenced by the frequency and intensity of winter air temperature extremes. However, our understanding of how different mangrove species respond to winter temperature extremes has been lacking because extreme freezing and chilling events are, by definition, relatively uncommon and also...
Benchmarking computational fluid dynamics models of lava flow simulation for hazard assessment, forecasting, and risk management
Hannah R. Dietterich, Einat Lev, Jiangzhi Chen, Jacob A. Richardson, Katharine V. Cashman
2017, Journal of Applied Volcanology (6)
Numerical simulations of lava flow emplacement are valuable for assessing lava flow hazards, forecasting active flows, designing flow mitigation measures, interpreting past eruptions, and understanding the controls on lava flow behavior. Existing lava flow models vary in simplifying assumptions, physics, dimensionality, and the degree to which they have been validated...
