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...
Monitoring duration and extent of storm-surge and flooding in Western Coastal Louisiana marshes with Envisat ASAR data
Elijah Ramsey III, Zhong Lu, Yukihiro Suzuoki, Amina Rangoonwala, Dirk Werle
2011, IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing (4) 387-399
Inundation maps of coastal marshes in western Louisiana were created with multitemporal Envisat Advanced Synthetic Aperture (ASAR) scenes collected before and during the three months after Hurricane Rita landfall in September 2005. Corroborated by inland water-levels, 7 days after landfall, 48% of coastal estuarine and palustrine marshes remained inundated by...
Contribution of global groundwater depletion since 1900 to sea-level rise
Leonard F. Konikow
2011, Geophysical Research Letters (38)
Removal of water from terrestrial subsurface storage is a natural consequence of groundwater withdrawals, but global depletion is not well characterized. Cumulative groundwater depletion represents a transfer of mass from land to the oceans that contributes to sea-level rise. Depletion is directly calculated using calibrated groundwater models, analytical approaches, or...
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...
US geological survey Circum-Arctic Resource Appraisal (CARA): Introduction and summary of organization and methods
Ronald R. Charpentier, Donald L. Gautier
2011, Geological Society Memoir 145-150
The USGS has assessed undiscovered petroleum resources in the Arctic through geological mapping, basin analysis and quantitative assessment. The new map compilation provided the base from which geologists subdivided the Arctic for burial history modelling and quantitative assessment. The CARA was a probabilistic, geologically based study that used existing USGS...
Palaeotsunamis in the Pacific Islands
J. Goff, C. Chague-Goff, D. Dominey-Howes, B. McAdoo, S. Cronin, Michael M. Bonte-Grapetin M., S. Nichol, M. Horrocks, M. Cisternas, G. Lamarche, B. Pelletier, Bruce E. Jaffe, W. Dudley
2011, Earth-Science Reviews (107) 141-146
The recent 29 September 2009 South Pacific and 27 February 2010 Chilean events are a graphic reminder that the tsunami hazard and risk for the Pacific Ocean region should not be forgotten. Pacific Islands Countries (PICs) generally have short (< 150 years) historic records, which means that to understand their tsunami hazard...
An overview of the petroleum geology of the Arctic
A.M. Spencer, A.F. Embry, Donald L. Gautier, A.V. Stoupakova, K. Sorensen
2011, Geological Society Memoir 1-15
Nine main petroleum provinces containing recoverable resources totalling 61 Bbbl liquids+269 Bbbloe of gas are known in the Arctic. The three best known major provinces are: West Siberia–South Kara, Arctic Alaska and Timan–Pechora. They have been sourced principally from, respectively, Upper Jurassic, Triassic and Devonian marine source rocks and their...
A case study of alternative site response explanatory variables in Parkfield, California
E.M. Thompson, L.G. Baise, R. E. Kayen, E.C. Morgan, J. Kaklamanos
2011, Conference Paper, Geotechnical Special Publication
The combination of densely-spaced strong-motion stations in Parkfield, California, and spectral analysis of surface waves (SASW) profiles provides an ideal dataset for assessing the accuracy of different site response explanatory variables. We judge accuracy in terms of spatial coverage and correlation with observations. The performance of the alternative models is...
Effects of environmental temperature on the dynamics of ichthyophoniasis in Juvenile Pacific Herring (Clupea pallasii)
J.L. Gregg, Johanna J. Vollenweider, C.A. Grady, R.A. Heintz, P.K. Hershberger
2011, Journal of Parasitology Research (2011)
The effects of temperature and infection by Ichthyophonus were examined in juvenile Pacific herring (Clupea pallasii) maintained under simulated overwinter fasting conditions. In addition to defining parameters for a herring bioenergetics model (discussed in Vollenweider et al. this issue), these experiments provided new insights into factors influencing the infectivity and...
Soil-geomorphic significance of land surface characteristics in an arid mountain range, Mojave Desert, USA
D.R. Hirmas, R.C. Graham, K.J. Kendrick
2011, Catena (87) 408-420
Mountains comprise an extensive and visually prominent portion of the landscape in the Mojave Desert, California. Landform surface properties influence the role these mountains have in geomorphic processes such as dust flux and surface hydrology across the region. The primary goal of this study was to describe and quantify land...
Mercury capture by selected Bulgarian fly ashes: Influence of coal rank and fly ash carbon pore structure on capture efficiency
I.J. Kostova, J.C. Hower, Maria Mastalerz, S.V. Vassilev
2011, Applied Geochemistry (26) 18-27
Mercury capture by fly ash C was investigated at five lignite- and subbituminous-coal-burning Bulgarian power plants (Republika, Bobov Dol, Maritza East 2, Maritza East 3, and Sliven). Although the C content of the ashes is low, never exceeding 1.6%, the Hg capture on a unit C basis demonstrates that the...
Comparison of Two Parametric Methods to Estimate Pesticide Mass Loads in California's Central Valley
D.K. Saleh, D. L. Lorenz, Joseph L. Domagalski
2011, Journal of the American Water Resources Association (47) 254-264
Mass loadings were calculated for four pesticides in two watersheds with different land uses in the Central Valley, California, by using two parametric models: (1) the Seasonal Wave model (SeaWave), in which a pulse signal is used to describe the annual cycle of pesticide occurrence in a stream, and (2)...
Effect of anaesthetics MS-222 and clove oil on blood biochemical parameters of juvenile Siberian sturgeon (Acipenser baerii)
G. Feng, P. Zhuang, L. Zhang, B. Kynard, X. Shi, M. Duan, J. Liu, X. Huang
2011, Journal of Applied Ichthyology (27) 595-599
The effects of MS-222 and clove oil on blood biochemical parameters of juvenile Siberian sturgeon (Acipenser baerii) were studied. MS-222 caused higher glucose (GLU) concentrations in anaesthetic test groups than for the control group. Triglyceride (TGL) concentrations of fish in the 140 and 160mgL-1 groups were also significantly higher than...
Lithosphere-asthenosphere interaction beneath the western United States from the joint inversion of body-wave traveltimes and surface-wave phase velocities
M. Obrebski, R. M. Allen, F. Pollitz, S.-H. Hung
2011, Geophysical Journal International (185) 1003-1021
The relation between the complex geological history of the western margin of the North American plate and the processes in the mantle is still not fully documented and understood. Several pre-USArray local seismic studies showed how the characteristics of key geological features such as the Colorado Plateau and the Yellowstone...
Mountain treelines: A roadmap for research orientation
George P. Malanson, Lynn M. Resler, Maaike Y. Bader, Fredrich-Karl Holtmeier, David R. Butler, Daniel J. Weiss, Lori D. Daniels, Daniel B. Fagre
2011, Arctic, Antarctic, and Alpine Research (43) 167-177
For over 100 years, mountain treelines have been the subject of varied research endeavors and remain a strong area of investigation. The purpose of this paper is to examine aspects of the epistemology of mountain treeline research-that is, to investigate how knowledge on treelines has been acquired and the changes...
Diel activity of Gulf of Mexico sturgeon in a northwest Florida bay
B.M. Wrege, M.S. Duncan, J. Jeffery Isely
2011, Journal of Applied Ichthyology (27) 322-326
In this paper, we assess patterns in activity of Gulf of Mexico sturgeon Acipenser oxyrinchus desotoi over a 24-h period in the Pensacola bay system, Florida. Although seasonal migration of sturgeon is well documented, little information is available pertaining to daily variation in activity. We surgically implanted 58 Gulf sturgeon...
Trends in pesticide concentrations in streams of the western United States, 1993-2005
Henry M. Johnson, Joseph L. Domagalski, Dina Saleh
2011, Journal of the American Water Resources Association (47) 265-286
Trends in pesticide concentrations for 15 streams in California, Oregon, Washington, and Idaho were determined for the organophosphate insecticides chlorpyrifos and diazinon and the herbicides atrazine, s‐ethyl diproplythiocarbamate (EPTC), metolachlor, simazine, and trifluralin. A parametric regression model was used to account for flow, seasonality, and antecedent hydrologic conditions and thereby...
Dirhinus texanus (Hymenoptera: Chalcididae) from Utah
L.L. Pech, M.W. Gates, T. B. Graham
2011, Southwestern Naturalist (56) 275-276
We collected a Dirhinus texanus (Hymenoptera: Chalcididae) in Salt Creek Canyon, Canyonlands National Park, San Juan County, Utah. This is the first record for D. texanus in Utah. ...
Evidence of volcanic and glacial activity in Chryse and Acidalia Planitiae, Mars
Sara Martinez-Alonso, Michael T. Mellon, Maria E. Banks, Laszlo P. Keszthelyi, Alfred S. McEwen
2011, Icarus (212) 597-621
Chryse and Acidalia Planitiae show numerous examples of enigmatic landforms previously interpreted to have been influenced by a water/ice-rich geologic history. These landforms include giant polygons bounded by kilometer-scale arcuate troughs, bright pitted mounds, and mesa-like features. To investigate the significance of the last we have analyzed in detail the...
Segregating gas from melt: an experimental study of the Ostwald ripening of vapor bubbles in magmas
Nicole C. Lautze, Thomas W. Sisson, Margaret T. Mangan, Timothy L. Grove
2011, Contributions to Mineralogy and Petrology (161) 331-347
Diffusive coarsening (Ostwald ripening) of H2O and H2O-CO2 bubbles in rhyolite and basaltic andesite melts was studied with elevated temperature–pressure experiments to investigate the rates and time spans over which vapor bubbles may enlarge and attain sufficient buoyancy to segregate in magmatic systems. Bubble growth and segregation are also considered...
GSD-1G and MPI-DING Reference Glasses for In Situ and Bulk Isotopic Determination
K.P. Jochum, S. A. Wilson, W. Abouchami, M. Amini, J. Chmeleff, A. Eisenhauer, E. Hegner, L.M. Iaccheri, B. Kieffer, J. Krause, W.F. McDonough, R. Mertz-Kraus, I. Raczek, R.L. Rudnick, Donna K. Scholz, G. Steinhoefel, B. Stoll, A. Stracke, S. Tonarini, D. Weis, U. Weis, J.D. Woodhead
2011, Geostandards and Geoanalytical Research (35) 193-226
This paper contains the results of an extensive isotopic study of United States Geological Survey GSD-1G and MPI-DING reference glasses. Thirteen different laboratories were involved using high-precision bulk (TIMS, MC-ICP-MS) and microanalytical (LA-MC-ICP-MS, LA-ICP-MS) techniques. Detailed studies were performed to demonstrate the large-scale and small-scale homogeneity of the reference glasses....
An 1800-yr record of decadal-scale hydroclimatic variability in the upper Arkansas River basin from bristlecone pine
C.A. Woodhouse, G.T. Pederson, S.T. Gray
2011, Quaternary Research (75) 483-490
Bristlecone pine trees are exceptionally long-lived, and with the incorporation of remnant material have been used to construct multi-millennial length ring-width chronologies. These chronologies can provide valuable information about past temperature and moisture variability. In this study, we outline a method to build a moisture-sensitive bristlecone chronology and assess the...
Herpetofauna of the cedar glades and associated habitats of the Inner Central Basin of middle Tennessee
M.L. Niemiller, Reynolds R. Graham, B.M. Glorioso, J. Spiess, B.T. Miller
2011, Herpetological Conservation and Biology (6) 127-141
The cedar glades and barrens of the Inner Central Basin (ICB) of middle Tennessee support a unique and diverse flora and fauna and represent some of the state's most valued natural areas. We conducted herpetofaunal inventories of the cedar glades, associated barrens, cedar-hardwood forest, and adjacent aquatic habitats of the...
The ShakeOut earthquake source and ground motion simulations
R.W. Graves, Douglas B. Houston, K.W. Hudnut
2011, Earthquake Spectra (27) 273-291
The ShakeOut Scenario is premised upon the detailed description of a hypothetical Mw 7.8 earthquake on the southern San Andreas Fault and the associated simulated ground motions. The main features of the scenario, such as its endpoints, magnitude, and gross slip distribution, were defined through expert opinion and incorporated information...
Seasonal variations in ectotherm growth rates: Quantifying growth as an intermittent non steady state compensatory process
J. -M. Guarini, Laurent Chauvaud, James E. Cloern, J. Clavier, J. Coston-Guarini, Y. Patry
2011, Journal of Sea Research (65) 355-361
Generally, growth rates of living organisms are considered to be at steady state, varying only under environmental forcing factors. For example, these rates may be described as a function of light for plants or organic food resources for animals and these could be regulated (or not) by temperature or other...
