An evaluation of a mitigation strategy for deer-vehicle collisions
John A. Bissonette, Silvia Rosa
2012, Wildlife Biology (18) 414-423
High mule deer Odocoileus hemionus mortality in southwestern Utah led to the establishment of a mitigation strategy with two major objectives: 1) reduction of wildlife-vehicle collisions and 2) restoration of landscape connectivity to facilitate wildlife movement across the roaded landscape. During our study, we assessed the effectiveness of the mitigation...
Using the internet to understand angler behavior in the information age
Dustin R. Martin, Brenda M. Pracheil, Jason A. DeBoer, Gene R. Wilde, Kevin L. Pope
2012, Fisheries (37) 458-463
Declining participation in recreational angling is of great concern to fishery managers because fishing license sales are an important revenue source for protection of aquatic resources. This decline is frequently attributed, in part, to increased societal reliance on electronics. Internet use by anglers is increasing and fishery managers may use...
Estimating the benefits of land imagery in environmental applications: a case study in nonpoint source pollution of groundwater
Richard L. Bernknopf, William M. Forney, Ronald P. Raunikar, Shruti K. Mishra
Ramanan Laxminarayan, Molly K. Maccauley, editor(s)
2012, Book chapter, The value of information
Moderate-resolution land imagery (MRLI) is crucial to a more complete assessment of the cumulative, landscape-level effect of agricultural land use and land cover on environmental quality. If this improved assessment yields a net social benefit, then that benefit reflects the value of information (VOI) from MRLI. Environmental quality and the...
The 2009 eruption of Redoubt Volcano, Alaska
Katharine F. Bull, Cheryl Cameron, Michelle L. Coombs, Angie Diefenbach, Taryn Lopez, Steve McNutt, Christina A. Neal, Allison Payne, John A. Power, David J. Schneider, William E. Scott, Seth Snedigar, Glenn Thompson, Kristi L. Wallace, Christopher F. Waythomas, Peter Webley, Cynthia A. Werner
Janet R. Schaefer, editor(s)
2012, Report of Investigations of the Alaska Department of Natural Resources, Division of Geological & Geophysical Surveys 2011-5
Redoubt Volcano, an ice-covered stratovolcano on the west side of Cook Inlet, erupted in March 2009 after several months of escalating unrest. The 2009 eruption of Redoubt Volcano shares many similarities with eruptions documented most recently at Redoubt in 1966–68 and 1989–90. In each case, the eruptive phase lasted several...
Borates
R.D. Crangle Jr.
2012, Mining Engineering (64) 39-40
Four minerals represent 90 percent of the borates used by industry worldwide — the sodium borates, tincal and kernite; the calcium borate, colemanite; and the sodium-calcium borate, ulexite....
Fragilariopsis diatom evolution in Pliocene and Pleistocene Antarctic shelf sediments
Charlotte Sjunneskog, Christina Riesselman, Diane Winter, Reed Scherer
2012, Micropaleontology (58) 273-289
The late Pliocene – early Pleistocene sediment record in the AND-1B core from the McMurdo Sound, Ross Sea, Antarctica, displays a rich diversity and high abundance of diatoms, including several new morphologies within the genus Fragilariopsis. These new morphologies exhibit similarities to the extinct late Miocene/early Pliocene species Fragilariopsis aurica...
Food security in a changing climate
Roger Pulwarty, Gary Eilerts, James Verdin
2012, Solutions Journal (3) 31-34
By 2080 the effects of climate change—on heat waves, floods, sea level rise, and drought—could push an additional 600 million people into malnutrition and increase the number of people facing water scarcity by 1.8 billion. The precise impacts will, however, strongly depend on socioeconomic conditions such as local markets and...
Evolution of the chemistry of Fe bearing waters during CO2 degassing
J.N. Geroni, C.A. Cravotta III, D.J. Sapsford
2012, Applied Geochemistry (27) 2335-2347
The rates of Fe(II) oxidation and precipitation from groundwater are highly pH dependent. Elevated levels of dissolved CO2 can depress pH and cause difficulty in removing dissolved Fe and associated metals during treatment of ferruginous water. This paper demonstrates interdependent changes in pH, dissolved inorganic C species, and Fe(II) oxidation...
The ICDP Snake River Geothermal Drilling Project: preliminary overview of borehole geophysics
Douglas R. Schmitt, Lee M. Liberty, James E. Kessler, Jochem Kuck, Randolph Kofman, Ross Bishop, John W. Shervais, James P. Evans, Duane E. Champion
2012, Geothermal Resources Council Transactions (36) 1017-1022
Hotspot: The Snake River Geothermal Drilling Project was undertaken to better understand the geothermal systems in three locations across the Snake River Plain with varying geological and hydrological structure. An extensive series of standard and specialized geophysical logs were obtained in each of the wells. Hydrogen-index neutron and γ-γ density...
Conflicts between sandhill cranes and farmers in the western United States: evolving issues and solutions
Jane E. Austin
2012, Conference Paper, Cranes, Agriculture and Climate Change, May 28 - June 3, 2010, Muraviovka Park for Sustainable Land Use, Amur Region, Russia
The main conflicts between Sandhill Cranes (Grus canadensis) and farmers in western United States occur in the Rocky Mountain region during migration and wintering periods. Most crop damage by cranes occurs in mature wheat (Triticum aestivum) and barley (Hordeum vulgare), young shoots of alfalfa (Medicago sativa) and cereal grains, chilies...
Inter-laboratory calibration of natural gas round robins for δ2H and δ13C using off-line and on-line techniques
Jinxing Dai, Xinyu Xia, Zhisheng Li, Dennis D. Coleman, Robert F. Dias, Ling Gao, Jian Li, Andrei Deev, Jin Li, Daniel Dessort, Dominique Duclerc, Liwu Li, Jinzhong Liu, Stefan Schloemer, Wenlong Zhang, Yunyan Ni, Guoyi Hu, Xiaobo Wang, Yongchun Tang
2012, Chemical Geology (310-311) 49-55
Compound-specific carbon and hydrogen isotopic compositions of three natural gas round robins were calibrated by ten laboratories carrying out more than 800 measurements including both on-line and off-line methods. Two-point calibrations were performed with international measurement standards for hydrogen isotope ratios (VSMOW and SLAP) and carbon isotope ratios (NBS 19...
Habitat use by fishes of Lake Superior. II. Consequences of diel habitat use for habitat linkages and habitat coupling in nearshore and offshore waters
Owen T. Gorman, Daniel L. Yule, Jason D. Stockwell
2012, Aquatic Ecosystem Health & Management (15) 355-368
Diel migration patterns of fishes in nearshore (15–80 m depth) and offshore (>80 m) waters of Lake Superior were examined to assess the potential for diel migration to link benthic and pelagic, and nearshore and offshore habitats. In our companion article, we described three types of diel migration: diel vertical migration (DVM),...
Heat flow in vapor dominated areas of the Yellowstone Plateau volcanic field: implications for the thermal budget of the Yellowstone Caldera
Shaul Hurwitz, Robert Harris, Cynthia Anne Werner, Fred Murphy
2012, Journal of Geophysical Research B: Solid Earth (117)
Characterizing the vigor of magmatic activity in Yellowstone requires knowledge of the mechanisms and rates of heat transport between magma and the ground surface. We present results from a heat flow study in two vapor dominated, acid-sulfate thermal areas in the Yellowstone Caldera, the 0.11 km2 Obsidian Pool Thermal Area...
Impact disruption and recovery of the deep subsurface biosphere
Charles S. Cockell, Mary A. Voytek, Aaron L. Gronstal, Kai Finster, Julie D. Kirshtein, Kieren Howard, Joachim Reitner, Gregory S. Gohn, Ward E. Sanford, J. Wright Horton Jr., Jens Kallmeyer, Laura Kelly, David S. Powars
2012, Astrobiology (12) 231-246
Although a large fraction of the world's biomass resides in the subsurface, there has been no study of the effects of catastrophic disturbance on the deep biosphere and the rate of its subsequent recovery. We carried out an investigation of the microbiology of a 1.76 km drill core obtained from the...
Modeling species invasions in Ecopath with Ecosim: an evaluation using Laurentian Great Lakes models
Brian J. Langseth, Mark Rogers, Hongyan Zhang
2012, Ecological Modelling (247) 251-261
Invasive species affect the structure and processes of ecosystems they invade. Invasive species have been particularly relevant to the Laurentian Great Lakes, where they have played a part in both historical and recent changes to Great Lakes food webs and the fisheries supported therein. There is increased interest in understanding...
Luna B. Leopold--pioneer setting the stage for modern hydrology
Randall J. Hunt, Curt Meine
2012, Ground Water (50) 966-970
In 1986, during the first year of graduate school, the lead author was sampling the water from a pitcher pump in front of “The Shack,” the setting of the opening essays in Aldo Leopold's renowned book A Sand County Almanac. The sampling was part of my Master's work that included...
Ecology of bison, elk, and vegetation in an arid ecosystem
Kathryn A. Schoenecker
2012, Thesis
Herbivory has profound effects on vegetation production and structure in many different plant communities. The influence of herbivory on plants and ultimately ecosystem processes is shaped by the types of plants consumed, the intensity of herbivory, the evolutionary history of grazing, and the availability of water and nutrients to plants....
Interdisciplinary research produces results in understanding planetary dunes
Timothy N. Titus, Rosalyn K. Hayward, Cynthia L. Dinwiddie
2012, Eos, Transactions, American Geophysical Union (93) 367-367
Third International Planetary Dunes Workshop: Remote Sensing and Image Analysis of Planetary Dunes; Flagstaff, Arizona, 12–16 June 2012. This workshop, the third in a biennial series, was convened as a means of bringing together terrestrial and planetary researchers from diverse backgrounds with the goal of fostering collaborative interdisciplinary research. The...
A meeting of the waters: interdisciplinary challenges and opportunities in tidal rivers
Scott H. Ensign, Gregory B. Noe, Cliff R. Hupp, Sergio Fagherazzi
2012, Eos, Transactions, American Geophysical Union (95) 455-456
At the interface of estuarine tides and freshwater rivers lie wetland and aquatic ecosystems, which experience dramatic effects of sea level rise. There, nontidal channels and riparian floodplains are transforming into tidal ecosystems, and tidal freshwater ecosystems are receiving increasing salinity. These river-floodplain systems have both fluvial characteristics, including meandering...
Bioenergetic response by steelhead to variation in diet, thermal habitat, and climate in the north Pacific Ocean
Margaret E. Atcheson, Katherine W. Myers, David A. Beauchamp, Nathan J. Mantua
2012, Transactions of the American Fisheries Society (141) 1081-1096
Energetic responses of steelhead Oncorhynchus mykiss to climate-driven changes in marine conditions are expected to affect the species’ ocean distribution, feeding, growth, and survival. With a unique 18-year data series (1991–2008) for steelhead sampled in the open ocean, we simulated interannual variation in prey consumption and growth efficiency of steelhead...
Nearshore hydrodynamics as loading and forcing factors for Escherichia coli contamination at an embayed beach
Zhongfu Ge, Richard L. Whitman, Meredith B. Nevers, Mantha S. Phanikumar, Muruleedhara N. Byappanahalli
2012, Limnology and Oceanography (57) 362-381
Numerical simulations of the transport and fate of Escherichia coli were conducted at Chicago's 63rd Street Beach, an embayed beach that had the highest mean E. coli concentration among 23 similar Lake Michigan beaches during summer months of 2000-2005, in order to find the cause for the high bacterial contamination....
Hydrogeomorphology of the hyporheic zone: stream solute and fine particle interactions with a dynamic streambed
J. W. Harvey, J.D. Drummond, R.L. Martin, L.E. McPhillips, A.I. Packman, D.J. Jerolmack, S.H. Stonedahl, A.F. Aubeneau, A.H. Sawyer, L. G. Larsen, C.R. Tobias
2012, Journal of Geophysical Research: Biogeosciences (117)
Hyporheic flow in streams has typically been studied separately from geomorphic processes. We investigated interactions between bed mobility and dynamic hyporheic storage of solutes and fine particles in a sand-bed stream before, during, and after a flood. A conservatively transported solute tracer (bromide) and a fine particles tracer (5 μm...
Lichens: Unexpected anti-prion agents?
Cynthia M. Rodriguez, James P. Bennett, Christopher J. Johnson
2012, Prion (6) 11-16
The prion diseases sheep scrapie and cervid chronic wasting disease are transmitted, in part, via an environmental reservoir of infectivity; prions released from infected animals persist in the environment and can cause disease years later. Central to controlling disease transmission is the identification of methods capable of inactivating these agents...
Geologic isolation of nuclear waste at high latitudes: the role of ice sheets
M. Person, J. McIntosh, N. Iverson, C. E. Neuzil, V. Bense
2012, Geofluids (12) 1-6
Geologic isolation of high-level nuclear waste from the biosphere requires special consideration in countries at high latitudes (>40°N) owing to the possibility of future episodes of continental glaciation (Talbot 1999). It is now widely recognized that Pleistocene continental glaciations have had a profound effect on rates of sediment erosion (Cuffey...
Anisotropic path modeling to assess pedestrian-evacuation potential from Cascadia-related tsunamis in the US Pacific Northwest
Nathan J. Wood, Mathew C. Schmidtlein
2012, Natural Hazards (62) 275-300
Recent disasters highlight the threat that tsunamis pose to coastal communities. When developing tsunami-education efforts and vertical-evacuation strategies, emergency managers need to understand how much time it could take for a coastal population to reach higher ground before tsunami waves arrive. To improve efforts to model pedestrian evacuations from tsunamis,...
