Bathymetric controls on Pliocene North Atlantic and Arctic sea surface temperature and deepwater production
Marci M. Robinson, P.J. Valdes, A.M. Haywood, H.J. Dowsett, D.J. Hill, S.M. Jones
2011, Palaeogeography, Palaeoclimatology, Palaeoecology (309) 92-97
The mid-Pliocene warm period (MPWP; ~ 3.3 to 3.0 Ma) is the most recent interval in Earth's history in which global temperatures reached and remained at levels similar to those projected for the near future. The distribution of global warmth, however, was different than today in that the high latitudes warmed more...
Determining the seismic source mechanism and location for an explosive eruption with limited observational data: Augustine Volcano, Alaska
P.B. Dawson, B. A. Chouet, J. Power
2011, Geophysical Research Letters (38)
Waveform inversions of the very-long-period components of the seismic wavefield produced by an explosive eruption that occurred on 11 January, 2006 at Augustine Volcano, Alaska constrain the seismic source location to near sea level beneath the summit of the volcano. The calculated moment tensors indicate the presence of a volumetric...
Attitudes and intentions of off-highway vehicle riders toward trail use: Implications for forest managers
Diane Kuehn, P. D. D’Luhosch, Valerie Luzadis, R. W. Malmsheimer, Rudy Schuster
2011, Journal of Forestry (109) 281-287
Management of off-highway vehicles (OHV) in public forest areas requires up-to-date information about the attitudes and intentions of OHV riders toward trail use. A survey of 811 members of the New England Trail Riders Association was conducted in fall 2007; 380 questionnaires were completed and returned. Descriptive statistics and regressions...
Olfactory-mediated stream-finding behavior of migratory adult sea lamprey (Petromyzon marinus)
L.A. Vrieze, R.A. Bergstedt, P.W. Sorensen
2011, Canadian Journal of Fisheries and Aquatic Sciences (68) 523-533
Stream-finding behavior of adult sea lamprey (Petromyzon marinus), an anadromous fish that relies on pheromones to locate spawning streams, was documented in the vicinity of an important spawning river in the Great Lakes. Untreated and anosmic migrating sea lampreys were implanted with acoustic transmitters and then released outside the Ocqueoc...
Application of the CO2-PENS risk analysis tool to the Rock Springs Uplift, Wyoming
P.H. Stauffer, R.J. Pawar, R.C. Surdam, Z. Jiao, H. Deng, B.C. Lettelier, H.S. Viswanathan, D.L. Sanzo, G. N. Keating
2011, Energy Procedia (4) 4084-4091
We describe preliminary application of the CO2-PENS performance and risk analysis tool to a planned geologic CO2 sequestration demonstration project in the Rock Springs Uplift (RSU), located in south western Wyoming. We use data from the RSU to populate CO2-PENS, an evolving system-level modeling tool developed at Los Alamos National Laboratory....
Real-time monitoring of CO2 storage sites: Application to Illinois Basin-Decatur Project
G. Picard, T. Berard, E. Chabora, S. Marsteller, S. Greenberg, R.J. Finley, U. Rinck, R. Greenaway, C. Champagnon, J. Davard
2011, Energy Procedia (4) 5594-5598
Optimization of carbon dioxide (CO2) storage operations for efficiency and safety requires use of monitoring techniques and implementation of control protocols. The monitoring techniques consist of permanent sensors and tools deployed for measurement campaigns. Large amounts of data are thus generated. These data must be managed and integrated for interpretation...
Ammonium in thermal waters of Yellowstone National Park: Processes affecting speciation and isotope fractionation
J.M. Holloway, D. Kirk Nordstrom, J.K. Böhlke, R. Blaine McCleskey, J.W. Ball
2011, Geochimica et Cosmochimica Acta (75) 4611-4636
Dissolved inorganic nitrogen, largely in reduced form (NH4(T)≈NH4(aq)++NH3(aq)o), has been documented in thermal waters throughout Yellowstone National Park, with concentrations ranging from a few micromolar along the Firehole River to millimolar concentrations at Washburn Hot Springs. Indirect evidence from rock nitrogen analyses and previous work on organic compounds associated with...
Specificity of DNA vaccines against the U and M genogroups of infectious hematopoietic necrosis virus (IHNV) in rainbow trout (Oncorhynchus mykiss)
M.M.D. Penaranda, S. E. LaPatra, Gael Kurath
2011, Fish and Shellfish Immunology (31) 43-51
Infectious hematopoietic necrosis virus (IHNV) is a fish rhabdovirus that causes significant mortality in salmonid species. In North America IHNV has three major genogroups designated U, M, and L. Host-specificity of the M and U genogroups of IHNV has been established both in the field and in experimental challenges, with...
Black-footed ferret areas of activity during late summer and fall at Meeteetse, Wyoming
K.A. Fagerstone, E. Biggins
2011, Journal of Mammalogy (92) 705-709
Radiotelemetry was used during 1983 and 1984 to collect information on short-term areas of activity for black-footed ferrets (Mustela nigripes) near Meeteetse, Wyoming. This population ultimately provided ferrets for the captive-breeding program that bred and released offspring into the wild since 1991. We fitted 5 adult ferrets and 13 juveniles...
Role of the fish astyanax aeneus (Characidae) as a keystone nutrient recycler in low-nutrient neotropical streams
G. E. Small, C. M. Pringle, M. Pyron, J.H. Duff
2011, Ecology (92) 386-397
Nutrient recycling by animals is a potentially important biogeochemical process in both terrestrial and aquatic ecosystems. Stoichiometric traits of individual species may result in some taxa playing disproportionately important roles in the recycling of nutrients relative to their biomass, acting as keystone nutrient recyclers. We examined factors controlling the relative...
Denitrification and inference of nitrogen sources in the karstic Floridan Aquifer
J.B. Heffernan, A.R. Albertin, M.L. Fork, B. G. Katz, M.J. Cohen
2011, Biogeosciences Discussions (8) 10247-10294
Aquifer denitrification is among the most poorly constrained fluxes in global and regional nitrogen budgets. The few direct measurements of denitrification in groundwaters provide limited information about its spatial and temporal variability, particularly at the scale of whole aquifers. Uncertainty in estimates of denitrification may also lead to underestimates of...
Columnar jointing in vapor-phase-altered, non-welded Cerro Galán Ignimbrite, Paycuqui, Argentina
Heather M. Wright, Chiara Lesti, Ray A.F. Cas, Massimiliano Porreca, Jose G. Viramonte, Christopher B. Folkes, Guido Giordano
2011, Bulletin of Volcanology (73) 1567-1582
Columnar jointing is thought to occur primarily in lavas and welded pyroclastic flow deposits. However, the non-welded Cerro Galán Ignimbrite at Paycuqui, Argentina, contains well-developed columnar joints that are instead due to high-temperature vapor-phase alteration of the deposit, where devitrification and vapor-phase crystallization have increased the density and cohesion of...
College and university environmental programs as a policy problem (Part 1): Integrating Knowledge, education, and action for a better world?
S.G. Clark, M.B. Rutherford, M.R. Auer, D.N. Cherney, R.L. Wallace, David J. Mattson, D. A. Clark, L. Foote, N. Krogman, P. Wilshusen, T. Steelman
2011, Environmental Management (47) 701-715
The environmental sciences/studies movement, with more than 1000 programs at colleges and universities in the United States and Canada, is unified by a common interest—ameliorating environmental problems through empirical enquiry and analytic judgment. Unfortunately, environmental programs have struggled in their efforts to integrate knowledge across disciplines and educate students to...
Faulted terrace risers place new constraints on the late Quaternary slip rate for the central Altyn Tagh fault, northwest Tibet
R.D. Gold, E. Cowgill, J.R. Arrowsmith, X. Chen, W.D. Sharp, K.M. Cooper, X.-F. Wang
2011, Geological Society of America Bulletin (123) 958-978
The active, left-lateral Altyn Tagh fault defines the northwestern margin of the Tibetan Plateau in western China. To clarify late Quaternary temporal and spatial variations in slip rate along the central portion of this fault system (85°–90°E), we have more than doubled the number of dated offset markers along the...
Electronic tagging of green sturgeon reveals population structure and movement among estuaries
S.T. Lindley, D.L. Erickson, M.L. Moser, G. Williams, O.P. Langness, B.W. McCovey Jr., M. Belchik, D. Vogel, W. Pinnix, J.T. Kelly, J.C. Heublein, A.P. Klimley
2011, Transactions of the American Fisheries Society (140) 108-122
Green sturgeon Acipenser medirostris spend much of their lives outside of their natal rivers, but the details of their migrations and habitat use are poorly known, which limits our understanding of how this species might be affected by human activities and habitat degradation. We tagged 355 green sturgeon with acoustic transmitters on...
The dynamics, transmission, and population impacts of avian malaria in native hawaiian birds: A modeling approach
Michael D. Samuel, P.H.F. Hobbelen, F. Decastro, Jorge A. Ahumada, Dennis A. LaPointe, Carter T. Atkinson, Bethany L. Woodworth, P.J. Hart, D.C. Duffy
2011, Ecological Applications (21) 2960-2973
We developed an epidemiological model of avian malaria (Plasmodium relictum) across an altitudinal gradient on the island of Hawaii that includes the dynamics of the host, vector, and parasite. This introduced mosquito‐borne disease is hypothesized to have contributed to extinctions and major shifts in the altitudinal distribution of highly susceptible...
Impacts of past climate and sea level change on Everglades wetlands: placing a century of anthropogenic change into a late-Holocene context
Debra A. Willard, C.E. Bernhardt
2011, Climatic Change (107) 59-80
We synthesize existing evidence on the ecological history of the Florida Everglades since its inception ~7 ka (calibrated kiloannum) and evaluate the relative impacts of sea level rise, climate variability, and human alteration of Everglades hydrology on wetland plant communities. Initial freshwater peat accumulation began between 6 and 7 ka...
Summary of intrinsic and extrinsic factors affecting detection probability of marsh birds
Courtney J. Conway, J.P. Gibbs
2011, Wetlands (31) 403-411
Many species of marsh birds (rails, bitterns, grebes, etc.) rely exclusively on emergent marsh vegetation for all phases of their life cycle, and many organizations have become concerned about the status and persistence of this group of birds. Yet, marsh birds are notoriously difficult to monitor due to their secretive...
Spatial organization of northern flying squirrels, Glaucomys sabrinus: Territoriality in females?
J.R. Smith, D.H.V. Vuren, D.A. Kelt, M.L. Johnson
2011, Western North American Naturalist (71) 44-48
We determined home-range overlap among northern flying squirrels (Glaucomys sabrinus) to assess their spatial organization. We found extensive home-range overlap among females, and though this overlap could reflect social behavior, we found no evidence of attraction among females, with only one instance of den sharing. Instead, our results...
A perspective on nonstationarity and water management
R.M. Hirsch
2011, Journal of the American Water Resources Association (47) 436-446
This essay offers some perspectives on climate-related nonstationarity and water resources. Hydrologists must not lose sight of the many sources of nonstationarity, recognizing that many of them may be of much greater magnitude than those that may arise from climate change. It is paradoxical that statistical and deterministic approaches give...
High-resolution well-log derived dielectric properties of gas-hydrate-bearing sediments, Mount Elbert Gas Hydrate Stratigraphic Test Well, Alaska North Slope
Y. Sun, D. Goldberg, Timothy S. Collett, R. Hunter
2011, Marine and Petroleum Geology (28) 450-459
A dielectric logging tool, electromagnetic propagation tool (EPT), was deployed in 2007 in the BPXA-DOE-USGS Mount Elbert Gas Hydrate Stratigraphic Test Well (Mount Elbert Well), North Slope, Alaska. The measured dielectric properties in the Mount Elbert well, combined with density log measurements, result in a vertical high-resolution (cm-scale) estimate...
Dispersal, mortality, and predation on recently-stocked rainbow trout in Dale Hollow Lake, Tennessee
Tomas J. Ivasauskas, Phillip William Bettoli
2011, Proceedings of the Annual Conference of the Southeastern Association of Fish and Wildlife Agencies (65) 83-91
Forty-four hatchery-raised rainbow trout (Oncorhynchus mykiss) were implanted with ultrasonic tags and stocked into Dale Hollow Lake, Tennessee, and tracked at least once per week for eight weeks to describe post-stocking dispersal rates, movements, and habitat use. Dispersal followed a three-stage pattern characterized by rapid movement away from each stocking...
Long-term change in perennial vegetation along the Colorado river in Grand Canyon national park (1889-2010)
R. H. Webb, Jayne Belnap, M. L. Scott, Todd Esque
2011, Park Science (28) 83-87
Long-term monitoring data are difficult to obtain for high-value resource areas, particularly in remote parts of national parks. One long-used method for evaluating change uses ground-based repeat photography to match historical images of landscapes. River expeditions that documented a proposed railroad route through Grand Canyon with large-format photographs occurred in...
Thiamine concentrations in lake whitefish eggs from the upper Great Lakes are related to maternal diet
Stephen Riley, J. Rinchard, M.P. Ebener, Donald E. Tillitt, K.R. Munkittrick, J.L. Parrott, J.D. Allen
2011, Journal of Great Lakes Research (37) 732-737
Thiamine deficiency is responsible for reproductive impairment in several species of salmonines in the Great lakes, and is thought to be caused by the consumption of prey containing thiaminase, a thiamine-degrading enzyme. Because thiaminase levels are extremely high in dreissenid mussels, fish that prey on them may be susceptible to...
Scenarios for coastal vulnerability assessment
Robert J. Nicholls, Colin D. Woodroffe, Virginia Burkett, John Hay, Poh Poh Wong, Leonard Nurse
Eric Wolanski, Donald S. McLusky, editor(s)
2011, Book chapter, Treatise on estuarine and coastal science: Ecological economics of estuaries and coasts
Coastal vulnerability assessments tend to focus mainly on climate change and especially on sea-level rise. Assessment of the influence of nonclimatic environmental change or socioeconomic change is less well developed and these drivers are often completely ignored. Given that the most profound coastal changes of the twentieth century due to...
