Effect of dietary α-tocopherol + ascorbic acid, selenium, and iron on oxidative stress in sub-yearling Chinook salmon (Oncorhynchus tshawytscha Walbaum)
T.L. Welker, J.L. Congleton
2009, Journal of Animal Physiology and Animal Nutrition (93) 15-25
A three-variable central composite design coupled with surface-response analysis was used to examine the effects of dietary ??-tocopherol + ascorbic acid (TOCAA), selenium (Se), and iron (Fe) on indices of oxidative stress in juvenile spring Chinook salmon. Each dietary factor was tested at five levels for a total of fifteen...
Recognizing former flood-tide deltas in the Holocene stratigraphic record from the Outer Banks, North Carolina, USA
Christopher G. Smith, S.J. Culver, D. J. Mallinson, S.R. Riggs, D.R. Corbett
2009, Stratigraphy (6) 61-78
Foraminiferal and sedimentologic data were collected by vibracoring a small, relict, short-lived, migrating inlet (New Inlet) and its flood-tide delta on the Outer Banks, North Carolina. These data, placed in the context of geospatial data derived from ground penetrating radar, were developed into a stratigraphic model for this sedimentary environment....
Nonlinear processes in volcanoes
Bernard A. Chouet
Robert A. Meyers, editor(s)
2009, Book chapter, Encyclopedia of Complexity and System Science
No abstract available...
A distal earthquake cluster concurrent with the 2006 explosive eruption of Augustine Volcano, Alaska
M. A. Fisher, N.A. Ruppert, R.A. White, Frederic H. Wilson, D. Comer, R. W. Sliter, F. L. Wong
2009, Tectonophysics (469) 25-36
Clustered earthquakes located 25 km northeast of Augustine Volcano began about 6 months before and ceased soon after the volcano's 2006 explosive eruption. This distal seismicity formed a dense cluster less than 5 km across, in map view, and located in depth between 11 km and 16 km. This seismicity was contemporaneous with sharply increased...
Diffuse gas emissions at the Ukinrek Maars, Alaska: Implications for magmatic degassing and volcanic monitoring
William C. Evans, D. Bergfeld, R. G. McGimsey, A.G. Hunt
2009, Applied Geochemistry (24) 527-535
Diffuse CO2 efflux near the Ukinrek Maars, two small volcanic craters that formed in 1977 in a remote part of the Alaska Peninsula, was investigated using accumulation chamber measurements. High CO2 efflux, in many places exceeding 1000 g m−2 d−1, was found in conspicuous zones of plant damage or kill...
Carlin-type gold deposits: By daylight, by caplight, and by the Caetano Caldera - Leeville Gold Mine, Carlin Trend, Pipeline-Cortez Hills Gold Mines, Caetano Caldera
Peter G. Vikre
2009, Book
No abstract available....
Littoral transport rates in the Santa Barbara Littoral Cell: a process-based model analysis
E. P. L. Elias, Patrick L. Barnard, John Brocatus
2009, Journal of Coastal Research 947-951
Identification of the sediment transport patterns and pathways is essential for sustainable coastal zone management of the heavily modified coastline of Santa Barbara and Ventura County (California, USA). A process-based model application, based on Delft3D Online Morphology, is used to investigate the littoral transport potential along the Santa Barbara Littoral...
Environmental contaminants and bats: Investigating exposure and effects
Thomas J. O’Shea, J. J. Johnston
2009, Book chapter, Ecological and behavioral methods for the study of bats
No abstract available....
Combined use of frequency‐domain electromagnetic and electrical resistivity surveys to delineate the freshwater/saltwater interface near saline lakes in the Nebraska Sand Hills, Nebraska, USA
John T. Ong, Eric A. White, John W. Lane Jr., Todd Halihan, Vitaly A Zlotnik
Dwain K. Butler, editor(s)
2009, Conference Paper, Proceedings of the Symposium on the Application of Geophysics to Engineering and Environmental Problems 2009
We investigate the use of frequency‐domain electromagnetic (FDEM) and electrical resistivity (ER) surveys for rapid and detailed characterization of the direction of lake‐aquifer fluxes and the configuration of salt plumes generated from saline lakes. This methodology was developed and applied at several lakes in the Nebraska Sand Hills, Nebraska, in...
Warmwater fish in large standing waters
L.E. Miranda, Jeff Boxrucker
Scott A. Bonar, Wayne A. Hubert, David W. Willis, editor(s)
2009, Book chapter, Standard methods for sampling North American freshwater fishes
Large standing waters are defined as those larger than 200 ha. Water temperature is a major determinant of fish assemblages in large standing water of North America (Matthews 1998 ). From a thermal perspective, eaters are broadly classified into coldwater (inhabited by trout and salmon) and warmwater (intolerable to trout...
Multifunctional grass farming: Science and policy considerations
George Boody, Prasanna H. Gowda, John Westra, Caroline van Schaik, Patrick Welle, Bruce C. Vondracek, Dennis Johnson
Alan J. Franzluebbers, editor(s)
2009, Book chapter, Farming with frass: Achieving sustainable mixed agricultural landscapes
No abstract available....
High-frequency in situ optical measurements during a storm event: Assessing relationships between dissolved organic matter, sediment concentrations, and hydrologic processes
John Franco Saraceno, Brian A. Pellerin, Bryan D. Downing, Emmanuel Boss, Philip A. M. Bachand, Brian A. Bergamaschi
2009, Journal of Geological Research (114)
Dissolved organic matter (DOM) dynamics during storm events has received considerable attention in forested watersheds, but the extent to which storms impart rapid changes in DOM concentration and composition in highly disturbed agricultural watersheds remains poorly understood. In this study, we used identical in situ optical sensors for DOM fluorescence...
Integrating toxicity risk in bird eggs and chicks: Using chick down feathers to estimate mercury concentrations in eggs
Joshua T. Ackerman, Collin A. Eagles-Smith
2009, Environmental Science & Technology (43) 2166-2172
The concentration of mercury (Hg) in eggs that causes reduced hatching success is regarded as a critical end point for Hg toxicity in birds. However, incorporating effects of in ovo mercury exposure on chick health and survival could improve risk assessment. We developed equations to predict Hg in eggs using...
Options for national parks and reserves for adapting to climate change
Jill S. Baron, Lance Gunderson, Craig D. Allen, Erica Fleishman, Donald McKenzie, Laura A. Meyerson, Jill Oropeza, Nathan L. Stephenson
2009, Environmental Management (44) 1033-1042
Past and present climate has shaped the valued ecosystems currently protected in parks and reserves, but future climate change will redefine these conditions. Continued conservation as climate changes will require thinking differently about resource management than we have in the past; we present some logical steps and tools for doing...
Fire effects on the Point Reyes Mountain Beaver (Aplodontia rufa phaea) at Point Reyes National Seashore, 10 years after the Vision Fire
Gary M. Fellers, Michael Osbourn
2009, Northwestern Naturalist (90) 189-193
The 1995 Vision Fire burned 5000 ha and destroyed 40% of the habitat of the Point Reyes Mountain Beaver (Aplodontia rufa phaea). Surveys immediately post-fire and in 2000 showed that only 0.4 to 1.7% of Mountain Beavers within the burn area survived. In 2000, dense, ground-hugging Blue-blossom Ceanothus (Ceanothus thrysiflorus)...
Feldspar dissolution rates in the Topopah Spring Tuff, Yucca Mountain, Nevada
C.R. Bryan, K.B. Helean, B.D. Marshall, P.V. Brady
2009, Applied Geochemistry (24) 2133-2143
Two different field-based methods are used here to calculate feldspar dissolution rates in the Topopah Spring Tuff, the host rock for the proposed nuclear waste repository at Yucca Mountain, Nevada. The center of the tuff is a high silica rhyolite, consisting...
Angler awareness of aquatic nuisance species and potential transport mechanisms
K.K. Gates, C.S. Guy, A.V. Zale, T.B. Horton
2009, Fisheries Management and Ecology (16) 448-456
The role anglers play in transporting aquatic nuisance species (ANS) is important in managing infestations and preventing introductions. The objectives of this study were to: (1) quantify angler movement patterns in southwestern Montana, ANS awareness and equipment cleaning practices; and (2) quantify the amount of soil transported on boots and...
Development of a liquefaction hazard screening tool for caltrans bridge sites
Kathy L. Knudsen, J.D.J. Bott, M.O. Woods, T.L. McGuire
2009, Conference Paper, TCLEE 2009: Lifeline Earthquake Engineering in a Multihazard Environment
We have developed a liquefaction hazard screening tool for the California Department of Transportation (Caltrans) that is being used to evaluate the liquefaction hazard to approximately 13,000 bridge sites in California. Because of the large number of bridge sites to be evaluated, we developed a tool that makes use of...
Influence of trees in the landscape on parasitism rates of grassland passerine nests in Southeastern North Dakota
Pamela J. Pietz, Deborah A. Buhl, Jill A. Shaffer, Maiken Winter, Douglas H. Johnson
2009, Condor (111) 36-42
Woody vegetation has been linked to increased rates of Brown-headed Cowbird (Molothrus ater) parasitism for some grassland hosts. In northern North Dakota, however, studies reported that parasitism of grassland passerine nests was lower in landscapes with trees than in those without trees. We looked for evidence of this pattern elsewhere,...
Physical modeling of river spanning rock structures: Evaluating interstitial flow, local hydraulics, downstream scour development, and structure stability
K.L. Collins, C.I. Thornton, B. Mefford, C. L. Holmquist-Johnson
2009, Conference Paper, Proceedings of World Environmental and Water Resources Congress 2009 - World Environmental and Water Resources Congress 2009: Great Rivers
Rock weir and ramp structures uniquely serve a necessary role in river management: to meet water deliveries in an ecologically sound manner. Uses include functioning as low head diversion dams, permitting fish passage, creating habitat diversity, and stabilizing stream banks and profiles. Existing information on design and performance of in-stream...
Design of smart sensing components for volcano monitoring
M. Xu, W.-Z. Song, R. Huang, Y. Peng, B. Shirazi, R. LaHusen, A. Kiely, N. Peterson, A. Ma, L. Anusuya-Rangappa, M. Miceli, D. McBride
2009, Pervasive and Mobile Computing (5) 639-653
In a volcano monitoring application, various geophysical and geochemical sensors generate continuous high-fidelity data, and there is a compelling need for real-time raw data for volcano eruption prediction research. It requires the network to support network synchronized sampling, online configurable sensing and situation awareness, which pose significant challenges on sensing...
Water uptake and nutrient concentrations under a floodplain oak savanna during a non-flood period, lower Cedar River, Iowa
K. E. Schilling, P. Jacobson
2009, Hydrological Processes (23) 3006-3016
Floodplains during non-flood periods are less well documented than when flooding occurs, but non-flood periods offer opportunities to investigate vegetation controls on water and nutrient cycling. In this study, we characterized water uptake and nutrient concentration patterns from 2005 to 2007 under an oak savanna located on the floodplain of...
Movements by adult cutthroat trout in a lotic system: Implications for watershed-scale management
T.B. Sanderson, W.A. Hubert
2009, Fisheries Management and Ecology (16) 329-336
Movements by adult cutthroat trout, Oncorhynchus clarkii (Richardson), were assessed from autumn to summer in the Salt River watershed, Wyoming-Idaho, USA by radio telemetry. Adult cutthroat trout were captured during September and October 2005 in the main stem of the Salt River, surgically implanted with radio transmitters, and tracked through...
Geographic relatedness and predictability of Escherichia coli along a peninsular beach complex of Lake Michigan
M.B. Nevers, D.A. Shively, G.T. Kleinheinz, C.M. McDermott, W. Schuster, V. Chomeau, R.L. Whitman
2009, Journal of Environmental Quality (38) 2357-2364
To determine more accurately the real-time concentration of fecal indicator bacteria (FIB) in beach water, predictive modeling has been applied in several locations around the Great Lakes to individual or small groups of similar beaches. Using 24 beaches in Door County, Wisconsin, we attempted to expand predictive models to multiple...
Evolution of the hormonal control of animal performance: insights from the seaward migration of salmon
S. D. McCormick
2009, Integrative and Comparative Biology (49) 408-422
The endocrine system is the key mediator of environmental and developmental (internal) information, and is likely to be involved in altering the performance of animals when selection has favored phenotypic plasticity. The endocrine control of performance should be especially pronounced in animals that undergo a developmental shift in niche, such...
