Using large-scale flow experiments to rehabilitate Colorado River ecosystem function in Grand Canyon: Basis for an adaptive climate-resilient strategy
Theodore S. Melis, William E. Pine III, Josh Korman, Michael D. Yard, Shaleen Jain, Roger S. Pulwarty
Kathleen Miller, Alan F. Hamlet, Douglas S. Kenney, Kelly T. Redmond, editor(s)
2016, Book chapter, Water policy and planning in a variable and changing climate
Adaptive management of Glen Canyon Dam is improving downstream resources of the Colorado River in Glen Canyon National Recreation Area and Grand Canyon National Park. The Glen Canyon Dam Adaptive Management Program (AMP), a federal advisory committee of 25 members with diverse special interests tasked to advise the U.S. Department...
Federal collaboration in science for invasive mammal management in U.S. National Parks and Wildlife Refuges of the Pacific Islands
Steven C. Hess, Darcy Hu, Rhonda Loh, Paul C. Banko
L.M. Conner, M. D. Smith, editor(s)
2016, Conference Paper, Proceedings of the 16th Wildlife Damage Management Conference
Some of the most isolated islands in the Pacific Ocean are home to US National Parks and Wildlife Refuges. These islands are known for flora and fauna that occur nowhere else, but also for invasive species and other factors which have resulted in the disproportionate extinction of native species. The...
Does paleoseismology forecast the historic rates of large earthquakes on the San Andreas fault system?
Glenn Biasi, Katherine M. Scharer, Ray J. Weldon, Timothy E. Dawson
2016, Conference Paper, Proceedings of the 7th PATA Days, 2016
The 98-year open interval since the most recent ground-rupturing earthquake in the greater San Andreas boundary fault system would not be predicted by the quasi-periodic recurrence statistics from paleoseismic data. We examine whether the current hiatus could be explained by uncertainties in earthquake dating. Using seven independent paleoseismic records,...
Clinal patterns in genetic variation for northern leopard frog (Rana pipiens): Conservation status and population histories
Craig A. Stockwell, Justin D.L. Fisher, Kyle I. McLean
2016, Wetlands (36) 437-443
The security of the northern leopard frog (Rana pipiens) varies spatially with populations east and west of North Dakota considered as secure and at risk, respectively. We used genetic markers to characterize the conservation status of northern leopard frog populations across North Dakota. We used multiple regression analyses...
Graphical function mapping as a new way to explore cause-and-effect chains
Mary Anne Evans
2016, Fisheries (41) 638-643
Graphical function mapping provides a simple method for improving communication within interdisciplinary research teams and between scientists and nonscientists. This article introduces graphical function mapping using two examples and discusses its usefulness. Function mapping projects the outcome of one function into another to show the combined effect. Using this mathematical...
The Permian–Triassic transition in Colorado
James S. Hagadorn, Karen R. Whitely, Bonita L. Lahey, Charles M. Henderson, Christopher S. Holm-Denoma
2016, GSA Field Guides (44) 73-92
The Lykins Formation and its equivalents in Colorado are a stratigraphically poorly constrained suite of redbeds and intercalated stromatolitic carbonates, which is hypothesized to span the Permian-Triassic boundary. Herein we present a preliminary detrital zircon geochronology, new fossil occurrences, and δ13C chemostratigraphy for exposures along the Front Range and...
The Chuar Petroleum System, Arizona and Utah
Paul G. Lillis
2016, Book chapter, Hydrocarbon source rocks in unconventional plays, Rocky Mountain Region
The Neoproterozoic Chuar Group consists of marine mudstone, sandstone and dolomitic strata divided into the Galeros and Kwagunt Formations, and is exposed only in the eastern Grand Canyon, Arizona. Research by the U.S. Geological Survey (USGS) in the late 1980s identified strata within the group to be possible petroleum source...
Petroleum system model of the Upper Devonian-Lower Mississippian Bakken Formation in the northern Williston Basin, Saskatchewan, southwestern Manitoba, and southeastern Alberta, Canada
Debra K. Higley, Nicholas J. Gianoutsos
2016, Book chapter, Hydrocarbon source rocks in unconventional plays, Rocky Mountain region: RMAG guidebook
No abstract available....
Using resilience and resistance concepts to manage threats to sagebrush ecosystems, Gunnison sage-grouse, and Greater sage-grouse in their eastern range: A strategic multi-scale approach
Jeanne C. Chambers, Jeffrey L. Beck, Steve Campbell, John Carlson, Thomas J. Christiansen, Karen J. Clause, Jonathan B. Dinkins, Kevin E. Doherty, Kathleen A. Griffin, Douglas W. Havlina, Kenneth F. Mayer, Jacob D. Hennig, Laurie L. Kurth, Jeremy D. Maestas, Mary E. Manning, Brian A. Mealor, Clinton McCarthy, Marco A. Perea, David A. Pyke
2016, General Technical Report RMRS-GTR-356
This report provides a strategic approach developed by a Western Association of Fish and Wildlife Agencies interagency working group for conservation of sagebrush ecosystems, Greater sage-grouse, and Gunnison sage-grouse. It uses information on (1) factors that influence sagebrush ecosystem resilience to disturbance and resistance to nonnative invasive annual grasses and...
Overpressure development through time using 4D pressure-volume-temperature modeling in the deep Anadarko Basin, Colorado, Kansas, Oklahoma, and Texas
Debra K. Higley
2016, Book chapter, Hydrocarbon source rocks in unconventional plays, Rocky Mountain region: RMAG guidebook
No abstract available....
Temperature response of soil respiration largely unaltered with experimental warming
Joanna C. Carey, Jianwu Tang, Pamela H. Templer, Kevin D. Kroeger, Thomas W. Crowther, Andrew J. Burton, Jeffrey S. Dukes, Bridget Emmett, Serita D. Frey, Mary A. Heskel, Lifen Jiang, Megan B. Machmuller, Jacqueline Mohan, Anne Marie Panetta, Peter B. Reich, Sabine Reinsch, Xin Wang, Steven D. Allison, Chris Bamminger, Scott D. Bridgham, Scott L. Collins, Giovanbattista de Dato, William C. Eddy, Brian J. Enquist, Marc Estiarte, John Harte, Amanda Henderson, Bart R. Johnson, Klaus Steenberg Larsen, Yiqi Luo, Sven Marhan, Jerry M. Melillo, Josep Penuelas, Laurel Pfeifer-Meister, Christian Poll, Edward B. Rastetter, Andrew B. Reinmann, Lorien L. Reynolds, Inger K. Schmidt, Gaius R. Shaver, Aaron L. Strong, Vidya Suseela, Albert Tietema
2016, Proceedings of the National Academy of Sciences of the United States of America (113) 13797-13802
The respiratory release of carbon dioxide (CO2) from soil is a major yet poorly understood flux in the global carbon cycle. Climatic warming is hypothesized to increase rates of soil respiration, potentially fueling further increases in global temperatures. However, despite considerable scientific attention in recent decades, the overall response of...
Cryovolcanism on Ceres
O. Ruesch, T. Platz, P. Schenk, L.A. McFadden, J. C. Castillo-Rogez, L. C. Quick, S. Byrne, F. Preusker, D.P. O'Brien, N. Schmedemann, D.A. Williams, Jian-Yang Li, M. T. Bland, H. Hiesinger, T. Kneissl, A. Neesemann, M. Schaefer, J. H. Pasckert, B.E. Schmidt, D.L. Buczkowski, M. V. Sykes, A. Nathues, T. Roatsch, M. Hoffman, C.A. Raymond, C.T. Russell
2016, Science (353)
Volcanic edifices are abundant on rocky bodies of the inner solar system. In the cold outer solar system, volcanism can occur on solid bodies with a water-ice shell, but derived cryovolcanic constructs have proved elusive. We report the discovery using Dawn Framing Camera images of a landform on dwarf planet...
Using structure from motion photogrammetry to examine glide snow avalanches
Erich H. Peitzsch, Jordy Hendrikx, Daniel B. Fagre
2016, Conference Paper, Proceedings of the International Snow Science Workshop
Structure from Motion (SfM), a photogrammetric technique, has been used extensively and successfully in many fields including geosciences over the past few years to create 3D models and high resolution digital elevation models (DEMs) from aerial or oblique photographs. SfM has recently been used in a limited capacity in snow avalanche research and...
Case study: 2016 Natural glide and wet slab avalanche cycle, Going-to-the-Sun Road, Glacier National Park, Montana, USA
Jacob Hutchinson, Erich H. Peitzsch, Adam Clark
2016, Conference Paper, Proceedings of the International Snow Science Workshop
The Going-to-the-Sun Road (GTSR) is the premier tourist attraction in Glacier National Park, Montana. The GTSR also traverses through and under 40 avalanche paths which pose a hazard to National Park Service (NPS) road crews during the annual spring snow plowing operation. Through a joint collaboration between the NPS and the U.S. Geological...
Geologic map and cross sections of the Embudo Fault Zone in the Southern Taos Valley, Taos County, New Mexico
Paul W. Bauer, Keith I. Kelson, V. J. S. Grauch, Benjamin J. Drenth, Peggy S. Johnson, Scott B. Aby, Brigitte Felix
2016, Open-File Report 584
The southern Taos Valley encompasses the physiographic and geologic transition zone between the Picuris Mountains and the San Luis Basin of the Rio Grande rift. The Embudo fault zone is the rift transfer structure that has accommodated the kinematic disparities between the San Luis Basin and the Española Basin during...
Oxygen, hydrogen, sulfur, and carbon isotopes in the Pea Ridge magnetite-apatite deposit, southeast Missouri, and sulfur isotope comparisons to other iron deposits in the region
Craig A. Johnson, Warren C. Day, Robert O. Rye
2016, Economic Geology (111) 2017-2032
Oxygen, hydrogen, sulfur, and carbon isotopes have been analyzed in the Pea Ridge magnetite-apatite deposit, the largest historic producer among the known iron deposits in the southeast Missouri portion of the 1.5 to 1.3 Ga eastern granite-rhyolite province. The data were collected to investigate the sources of ore fluids,...
Use of structured decision-making to explicitly incorporate environmental process understanding in management of coastal restoration projects: Case study on barrier islands of the northern Gulf of Mexico
P. Soupy Dalyander, Michelle B. Meyers, Brady Mattsson, Gregory Steyer, Elizabeth Godsey, Justin McDonald, Mark R. Byrnes, Mark Ford
2016, Journal of Environmental Management (183) 497-509
Coastal ecosystem management typically relies on subjective interpretation of scientific understanding, with limited methods for explicitly incorporating process knowledge into decisions that must meet multiple, potentially competing stakeholder objectives. Conversely, the scientific community lacks methods for identifying which advancements in system understanding would have the highest value to decision-makers. A...
Concentrations of mineral aerosol from desert to plains across the central Rocky Mountains, western United States
Richard L. Reynolds, Seth M. Munson, Daniel Fernandez, Harland L. Goldstein, Jason C. Neff
2016, Aeolian Research (23) 21-35
Mineral dusts can have profound effects on climate, clouds, ecosystem processes, and human health. Because regional dust emission and deposition in western North America are not well understood, measurements of total suspended particulate (TSP) from 2011 to 2013 were made along a 500-km transect of five remote sites in Utah...
Occurrence and concentrations of selected trace elements, halogenated organic compounds, and polycyclic aromatic hydrocarbons in streambed sediments and results of water-toxicity testing in Westside Creeks and the San Antonio River, San Antonio, Texas, 2014
Cassi L. Crow, Jennifer T. Wilson, James L. Kunz
2016, Scientific Investigations Report 2016-5136
Sediment samples and samples for water-toxicity testing were collected during 2014 from several streams in San Antonio, Texas, known locally as the Westside Creeks (Alazán, Apache, Martínez, and San Pedro Creeks) and from the San Antonio River. Samples were collected during base flow and after periods of stormwater runoff (poststorm...
Shifting currents: Progress, setbacks, and shifts in policy and practice
Wisconsin Academy of Sciences, Arts & Letters, Charles Dunning, Dale M. Robertson
2016, Report
The Wisconsin Academy’s initial Waters of Wisconsin project (WOW I) facilitated a statewide conversation between 2000 and 2003 around one main question: How can we ensure healthy aquatic ecosystems and clean, abundant water supplies for tomorrow’s Wisconsin? Robust participation in this conversation underscored the important role citizens have in the...
Powell Center Newsletter, Volume 3, Issue 1
Marcia McNiff
2016, Report
Newsletter for the John Wesley Powell Center for Analysis and Synthesis, covering news from most of FY2016....
Trading shallow safety for deep sleep: Juvenile green turtles select deeper resting sites as they grow
Kristen M. Hart, Connor F. White, Autumn R. Iverson, Nick Whitney
2016, Endangered Species Research (31) 61-73
To better protect endangered green sea turtles Chelonia mydas, a more thorough understanding of the behaviors of each life stage is needed. Although dive profile analyses obtained using time-depth loggers have provided some insights into habitat use, recent work has shown that more fine-scale monitoring of body movements is needed...
An experimental study of the role of subsurface plumbing on geothermal discharge
Atsuko Namiki, Yoshinori Ueno, Shaul Hurwitz, Michael Manga, Carolina Munoz-Saez, Fred Murphy
2016, Geochemistry, Geophysics, Geosystems (17) 3691-3716
In order to better understand the diverse discharge styles and eruption intervals observed at geothermal features, we performed three series of laboratory experiments with differing plumbing geometries. A single, straight conduit that connects a hot water bath (flask) to a vent (funnel) can originate geyser-like periodic eruptions, continuous discharge like...
Habitat selection by Forster's Terns (Sterna forsteri) at multiple spatial scales in an urbanized estuary: The importance of salt ponds
Jill Bluso-Demers, Joshua T. Ackerman, John Y. Takekawa, Sarah H. Peterson
2016, Waterbirds (39) 375-387
The highly urbanized San Francisco Bay Estuary, California, USA, is currently undergoing large-scale habitat restoration, and several thousand hectares of former salt evaporation ponds are being converted to tidal marsh. To identify potential effects of this habitat restoration on breeding waterbirds, habitat selection of radiotagged Forster's Terns (Sterna forsteri) was...
Unmanned aircraft systems in wildlife research: Current and future applications of a transformative technology
Katherine S. Christie, Sophie L. Gilbert, Casey L. Brown, Michael Hatfield, Leanne Hanson
2016, Frontiers in Ecology and the Environment (14) 241-251
Unmanned aircraft systems (UAS) – also called unmanned aerial vehicles (UAVs) or drones – are an emerging tool that may provide a safer, more cost-effective, and quieter alternative to traditional research methods. We review examples where UAS have been used to document wildlife abundance, behavior, and habitat, and illustrate the...
