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...
Response of fish assemblages to declining acidic deposition in Adirondack Mountain lakes, 1984–2012
Barry P. Baldigo, Karen Roy, Charles T. Driscoll
2016, Atmospheric Environment (146) 223-235
Adverse effects of acidic deposition on the chemistry and fish communities were evident in Adirondack Mountain lakes during the 1980s and 1990s. Fish assemblages and water chemistry in 43 Adirondack Long-Term Monitoring (ALTM) lakes were sampled by the Adirondack Lakes Survey Corporation and the New York State Department of Environmental...
Application of ground penetrating radar for identification of washover deposits and other stratigraphic features: Assateague Island, MD
Nicholas Zaremba, Christopher G. Smith, Julie Bernier, Arnell S. Forde
2016, Journal of Environmental & Engineering Geophysics (21) 173-186
A combination of ground penetrating radar (GPR) data, core data, and aerial photographs were analyzed to better understand the evolution of two portions of Assateague Island, Maryland. The focus of the study was to investigate the applicability of using GPR data to image washover deposits in the stratigraphic record. High...
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 relative contributions of disease and insects in the decline of a long-lived tree: a stochastic demographic model of whitebark pine (Pinus albicaulis)
Erik S Jules, Jenell I. Jackson, Phillip J. van Mantgem, Jennifer S. Beck, Michael P. Murray, E. April Sahara
2016, Forest Ecology and Management (381) 144-156
Pathogens and insect pests have become increasingly important drivers of tree mortality in forested ecosystems. Unfortunately, understanding the relative contributions of multiple mortality agents to the population decline of trees is difficult, because it requires frequent measures of tree survival, growth, and recruitment, as well as the incidence of mortality...
Population-specific life histories contribute to metapopulation viability
Samniqueka J. Halsey, Timothy J. Bell, Kathryn McEachern, Noel B. Pavlovic
2016, Ecosphere (7) 1-13
Restoration efforts can be improved by understanding how variations in life-history traits occur within populations of the same species living in different environments. This can be done by first understanding the demographic responses of natural occurring populations. Population viability analysis continues to be useful to species management and conservation with...
Increased prevalence of antibiotic-resistant E. coli in gulls sampled in southcentral Alaska is associated with urban environments
Clara Atterby, Andrew M. Ramey, Gabriel Gustafsson Hall, Josef Jarhult, Stefan Borjesson, Jonas Bonnedahl
2016, Infection Ecology and Epidemiology (6) 1-7
BackgroundAntibiotic-resistant bacteria pose challenges to healthcare delivery systems globally; however, limited information is available regarding the prevalence and spread of such bacteria in the environment. The aim of this study was to compare the prevalence of antibiotic-resistant bacteria in large-bodied gulls (Larus spp.) at urban...
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....
Topographic and fire weather controls of fire refugia in forested ecosystems of northwestern North America
Meg A. Krawchuk, Sandra L. Haire, Jonathan D. Coop, Marc-André Parisien, Ellen Whitman, Geneva W. Chong, Carol Miller
2016, Ecosphere (7) 1-18
Fire refugia, sometimes referred to as fire islands, shadows, skips, residuals, or fire remnants, are an important element of the burn mosaic, but we lack a quantitative framework that links observations of fire refugia from different environmental contexts. Here, we develop and test a conceptual model for how predictability of...
Evaluating new SMAP soil moisture for drought monitoring in the rangelands of the US High Plains
Naga Manohar Velpuri, Gabriel B. Senay, Jeffrey T. Morisette
2016, Rangelands (38) 183-190
Level 3 soil moisture datasets from the recently launched Soil Moisture Active Passive (SMAP) satellite are evaluated for drought monitoring in rangelands.Validation of SMAP soil moisture (SSM) with in situ and modeled estimates showed high level of agreement.SSM showed the highest correlation with surface soil moisture (0-5 cm) and a...
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...
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...
Prediction of fish and sediment mercury in streams using landscape variables and historical mining
Charles N. Alpers, Julie L. Yee, Joshua T. Ackerman, James L. Orlando, Darrell G. Slotton, Mark C. Marvin-DiPasquale
2016, Science of the Total Environment (571) 364-379
Widespread mercury (Hg) contamination of aquatic systems in the Sierra Nevada of California, U.S., is associated with historical use to enhance gold (Au) recovery by amalgamation. In areas affected by historical Au mining operations, including the western slope of the Sierra Nevada and downstream areas in northern California, such as...
Hanging out at the airport: Unusual upside-down perching behavior by Eurasian Jackdaws (Corvus monedula) in a human-dominated environment
Todd E. Katzner
2016, Wilson Journal of Ornithology (128) 926-930
Animals occupying human-dominated environments show the capacity for behavioral flexibility. Corvids are among the most intelligent synanthropic bird species. During a layover at Schipol Airport in Amsterdam, Netherlands, I photographically documented Eurasian Jackdaws (Corvus monedula) perching upside down from a building cornice. In contrast to other reports of hanging birds,...
Historical reconstructions of California wildfires vary by data source
Alexandra D. Syphard, Jon E. Keeley
2016, International Journal of Wildland Fire (25) 1221-1227
Historical data are essential for understanding how fire activity responds to different drivers. It is important that the source of data is commensurate with the spatial and temporal scale of the question addressed, but fire history databases are derived from different sources with different restrictions. In California, a frequently used...
Identifying alternate pathways for climate change to impact inland recreational fishers
Len M. Hunt, Eli P. Fenichel, David C. Fulton, Robert Mendelsohn, Jordan W. Smith, Tyler D. Tunney, Abigail J. Lynch, Craig P. Paukert, James E. Whitney
2016, Fisheries (41) 362-372
Fisheries and human dimensions literature suggests that climate change influences inland recreational fishers in North America through three major pathways. The most widely recognized pathway suggests that climate change impacts habitat and fish populations (e.g., water temperature impacting fish survival) and cascades to impact fishers. Climate change also impacts recreational...
The Bonneville Flood—A veritable débâcle
Jim E. O'Connor
2016, Book chapter, Developments in earth surface processes, vol. 20
The Bonneville Flood was one of the largest floods on Earth. First discovered by G.K. Gilbert in the 1870s during his inspection of the outlet at Red Rock Pass, it was rediscovered in the 1950s by Harold Malde and coworkers, leading to mapping and assessment of spectacular flood features along...
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....
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...
Development of an adaptive harvest management program for Taiga bean geese
Fred A. Johnson, Mikko Alhainen, Anthony D. Fox, Jesper Madsen
2016, Conference Paper, First meeting of the AEWA European Goose Management International Working Group
This report describes recent progress in specifying the elements of an adaptive harvest program for taiga bean goose. It describes harvest levels appropriate for first rebuilding the population of the Central Management Unit and then maintaining it near the goal specified in the AEWA International Single Species Action Plan (ISSAP)....
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....
Summary of SPT based field case history data of CETIN (2016) database
K. Onder Cetin, Raymond B. Seed, Robert E. Kayen, Robb E. S. Moss, H. Tolga Bilge, Makbule Ilgac, Khaled Chowdhury
2016, Report
This report provides documentation of the Cetin et al. (2016) field performance case histories, probabilistic maximum likelihood assessment and the sources of differences between the liquefaction triggering resistance estimations (CRR values) of the widely used liquefaction triggering relationships of Seed et al. (1985), Cetin et al. (2004, 2016) and Boulanger...
Uncertainty quantification and propagation for projections of extremes in monthly area burned under climate change: A case study in the coastal plain of Georgia, USA
Adam J. Terando, Brian J. Reich, Krishna Pacifici, Jennifer Costanza, Alexa McKerrow, Jaime A. Collazo
Karin L. Riley, Peter Webley, Matthew Thompson, editor(s)
2016, Book chapter, Natural hazard uncertainty assessment: Modeling and decision support
Human‐caused climate change is predicted to affect the frequency of hazard‐linked extremes. Unusually large wildfires are a type of extreme event that is constrained by climate and can be a hazard to society but also an important ecological disturbance. This chapter focuses on changes in the frequency of extreme monthly...
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...
Effects of stream-adjacent logging in fishless headwaters on downstream coastal cutthroat trout
Douglas S. Bateman, Matthew R. Sloat, Robert E. Gresswell, Aaron M. Berger, David Hockman-Wert, David W. Leer, Arne E. Skaugset
2016, Canadian Journal of Fisheries and Aquatic Sciences (73) 1898-1913
To investigate effects of headwater logging on downstream coastal cutthroat trout (Oncorhynchus clarkii clarkii) populations, we monitored stream habitat and biotic indicators including biomass, abundance, growth, movement, and survival over 8 years using a paired-watershed approach. Reference and logged catchments were located on private industrial forestland on ∼60-year harvest rotation....
