A geostatistical approach to mapping site response spectral amplifications
E.M. Thompson, L.G. Baise, R. E. Kayen, Y. Tanaka, H. Tanaka
2010, Engineering Geology (114) 330-342
If quantitative estimates of the seismic properties do not exist at a location of interest then the site response spectral amplifications must be estimated from data collected at other locations. Currently, the most common approach employs correlations of site class with maps of surficial geology. Analogously, correlations of site class...
Composition, distribution, and potential toxicity of organochlorine mixtures in bed sediments of streams
Patrick J. Phillips, Lisa H. Nowell, Robert J. Gilliom, Naomi Nakagaki, Karen Riva-Murray, Carolyn VanAlstyne
2010, Science of the Total Environment (408) 594-606
Mixtures of organochlorine compounds have the potential for additive or interactive toxicity to organisms exposed in the stream. This study uses a variety of methods to identify mixtures and a modified concentration-addition approach to estimate their potential toxicity at 845 stream sites across the United States sampled between 1992 and...
Colony attendance patterns by mated Forster's Terns Sterna forsteri using an automated data-logging receiver system
Jill D. Bluso-Demers, Joshua T. Ackerman, John Y. Takekawa
2010, Ardea (98) 59-65
In order to examine 24-hour colony attendance patterns by mated Forster's Terns Sterna forsteri in South San Francisco Bay, California, during incubation and chick-rearing stages, we radio-marked 10 individuals consisting of five pairs and recorded colony attendance using an automated data-logging receiver system. We calculated and analyzed five variables: the total attendance...
Population-level resource selection by sympatric brown and American black bears in Alaska
Jerrold L. Belant, Brad Griffith, Yingte Zhang, Erich H. Follmann, Layne G. Adams
2010, Polar Biology (33) 31-40
Distribution theory predicts that for two species living in sympatry, the subordinate species would be constrained from using the most suitable resources (e.g., habitat), resulting in its use of less suitable habitat and spatial segregation between species. We used negative binomial generalized linear mixed models with fixed effects to estimate...
Theory for source-responsive and free-surface film modeling of unsaturated flow
J. R. Nimmo
2010, Vadose Zone Journal (9) 295-306
A new model explicitly incorporates the possibility of rapid response, across significant distance, to substantial water input. It is useful for unsaturated flow processes that are not inherently diffusive, or that do not progress through a series of equilibrium states. The term source-responsive is used to mean that flow responds...
Early observations on an emerging Great Lakes invader Hemimysis anomala in Lake Ontario
Maureen G. Walsh, Brian F. Lantry, Brent Boscarino, Kelly Bowen, Jocelyn Gerlofsma, Ted Schaner, Richard Back, Jennifer Questel, A. Garry Smythe, Roberta Cap, Michael Goehle, Bryan Young, Marc A. Chalupnicki, James H. Johnson, James E. McKenna
2010, Journal of Great Lakes Research (36) 499-504
Hemimysis anomala, a Ponto-Caspian littoral mysid, is an emerging Great Lakes invader that was discovered in Lakes Michigan and Ontario in 2006. Similar to the native mysid Mysis diluviana, Hemimysis exhibits a diel vertical migration pattern but generally inhabits shallower and warmer waters than M. diluviana. Because basic information on...
Transient electromagnetic mapping of clay units in the San Luis Valley, Colorado
David V. Fitterman, V. J. S. Grauch
2010, Conference Paper, Symposium on the Application of Geophysics to Engineering and Environmental Problems 2010
Transient electromagnetic soundings were used to obtain information needed to refine hydrologic models of the San Luis Valley, Colorado. The soundings were able to map an aquitard called the blue clay that separates an unconfined surface aquifer from a deeper confined aquifer. The blue clay forms a conductor with an average...
Passage and behavior of radio-tagged adult Pacific lampreys (Entosphenus tridentatus) at the Willamette Falls Project, Oregon.
Matthew G. Mesa, Robert J. Magie, Elizabeth S. Copeland
2010, Northwest Science (84) 233-242
Populations of Pacific lamprey (Entosphenus tridentatus) in the Columbia River basin have declined and passage problems at dams are a contributing factor. We used radio telemetry to monitor the passage of adult Pacific lampreys at the Willamette Falls Project (a hydroelectric dam integrated into a natural falls) on the Willamette...
Establishing the Antarctic Dome C community reference standard site towards consistent measurements from Earth observation satellites
C. Cao, S. Uprety, J. Xiong, A. Wu, P. Jing, D. Smith, G. Chander, N. Fox, S. Ungar
2010, Canadian Journal of Remote Sensing (36) 498-513
Establishing satellite measurement consistency by using common desert sites has become increasingly more important not only for climate change detection but also for quantitative retrievals of geophysical variables in satellite applications. Using the Antarctic Dome C site (75°06′S, 123°21′E, elevation 3.2 km) for satellite radiometric calibration and validation (Cal/Val) is...
Novel silver tubing method for quantitative introduction of water into high temperature conversion systems for stable hydrogen and oxygen isotopic measurements
Haiping Qi, Manfred Groning, Tyler B. Coplen, Bryan Buck, Stanley J. Mroczkowski, Willi A. Brand, Heike Geilmann, Matthias Gehre
2010, Rapid Communications in Mass Spectrometry (24) 1821-1827
A new method to seal water in silver tubes for use in a TC/EA reduction unit using a semi-automated sealing apparatus can yield reproducibilities (1 standard deviation) of δ2H and &delta18O measurements of 1.0 ‰ and 0.06 ‰, respectively. These silver tubes containing reference waters may be preferred for calibration...
Perfluorinated compounds and polybrominated diphenyl ethers in great blue heron eggs from three colonies on the Mississippi River, Minnesota
Thomas W. Custer, Kurunthachalam Kannan, Lin Tao, Hun Yun, Annette Trowbridge
2010, Waterbirds (33) 86-95
Archived Great Blue Heron (Ardea herodias) eggs (N = 16) collected in 1993 from three colonies on the Mississippi River in Minnesota were analyzed in 2007 for perfluorinated compounds (PFCs) and polybrominated diphenyl ethers (PBDEs). One of the three colonies, Pig's Eye, was located near a presumed source of PFCs....
Pollutant fate and spatio-temporal variability in the choptank river estuary: Factors influencing water quality
D. Whitall, W.D. Hively, A.K. Leight, C.J. Hapeman, L.L. McConnell, T. Fisher, C.P. Rice, E. Codling, G.W. McCarty, A.M. Sadeghi, A. Gustafson, K. Bialek
2010, Science of the Total Environment (408) 2096-2108
Restoration of the Chesapeake Bay, the largest estuary in the United States, is a national priority. Documentation of progress of this restoration effort is needed. A study was conducted to examine water quality in the Choptank River estuary, a tributary of the Chesapeake Bay that since 1998 has been classified...
Mineral resource of the Month: Clay
Robert L. Virta
2010, Earth (2010) 27-27
Clays were one of the first mineral commodities used by people. Clay pottery has been found in archeological sites that are 12,000 years old, and clay figurines have been found in sites that are even older....
Agriculture and food availability -- remote sensing of agriculture for food security monitoring in the developing world
Michael E. Budde, James Rowland, Christopher C. Funk
2010, Earthzine
For one-sixth of the world’s population - roughly 1 billion children, women and men - growing, buying or receiving adequate, affordable food to eat is a daily uncertainty. The World Monetary Fund reports that food prices worldwide increased 43 percent in 2007-2008, and unpredictable growing conditions make subsistence farming, on...
Introduction: Tagging, telemetry, and marking compendium project
Keith S. Wolf, Stephen M. Waste
2010, PNAMP Report Series 2010-002-1
Goal and Objectives of the Compendium The goal of this compendium is to integrate profiles of on-going, individual, disparate efforts implementing the science of tagging, telemetry, and marking (TTM) into a compilation of experience to inform the development of fish population monitoring. This is accomplished by meeting the following objectives: • Provide...
Waterfowl ecology and avian influenza in california: Do host traits inform us about viral occurrence?
N.J. Hill, John Y. Takekawa, C.J. Cardona, Joshua T. Ackerman, A.K. Schultz, K.A. Spragens, W.M. Boyce
2010, Avian Diseases (54) 426-432
We examined whether host traits influenced the occurrence of avian influenza virus (AIV) in Anatidae (ducks, geese, swans) at wintering sites in California's Central Valley. In total, 3487 individuals were sampled at Sacramento National Wildlife Refuge and Conaway Ranch Duck Club during the hunting season of 2007-08. Of the 19...
First high-resolution stratigraphic column of the Martian north polar layered deposits
K.E. Fishbaugh, C.S. Hvidberg, S. Byrne, P.S. Russell, Kenneth E. Herkenhoff, M. Winstrup, R. Kirk
2010, Geophysical Research Letters (37)
This study achieves the first high-spatial-resolution, layer-scale, measured stratigraphic column of the Martian north polar layered deposits using a 1m-posting DEM. The marker beds found throughout the upper North Polar Layered Deposits range in thickness from 1.6 m-16.0 m +/-1.4 m, and 6 of 13 marker beds are separated by...
Inter-regional comparison of land-use effects on stream metabolism
M. J. Bernot, D. J. Sobota, R.O. Hall, P. J. Mulholland, W. K. Dodds, J.R. Webster, J. L. Tank, L. R. Ashkenas, L. W. Cooper, Clifford N. Dahm, S.V. Gregory, N. B. Grimm, S. K. Hamilton, S. L. Johnson, W. H. McDowell, J.L. Meyer, B. Peterson, G. C. Poole, Valett H.M. Maurice, C. Arango, J. J. Beaulieu, A. J. Burgin, C. Crenshaw, A. M. Helton, L. Johnson, J. Merriam, B.R. Niederlehner, J. M. O’Brien, J. D. Potter, R.W. Sheibley, S. M. Thomas, K. Wilson
2010, Freshwater Biology (55) 1874-1890
1. Rates of whole-system metabolism (production and respiration) are fundamental indicators of ecosystem structure and function. Although first-order, proximal controls are well understood, assessments of the interactions between proximal controls and distal controls, such as land use and geographic region, are lacking. Thus, the influence of land use on stream...
Attributes for MRB_E2RF1 Catchments by Major River Basins in the Conterminous United States: STATSGO Soil Characteristics
Michael Wieczorek, Andrew E. LaMotte
2010, Data Series 491-26
This tabular data set represents estimated soil variables compiled for every MRB_E2RF1 catchment of selected Major River Basins (MRBs, Crawford and others, 2006). The variables included are cation exchange capacity, percent calcium carbonate, slope, water-table depth, soil thickness, hydrologic soil group, soil erodibility (k-factor), permeability, average water capacity, bulk density,...
Small mammals associated with colonies of black-tailed prairie dogs (Cynomys ludovicianus) in the Southern High Plains
A.L. Pruett, C. W. Boal, M.C. Wallace, Heather A. Whitlaw, J.D. Ray
2010, Southwestern Naturalist (55) 50-56
We compared diversity and abundance of small mammals at colonies of black-tailed prairie dogs (Cynomys ludovicianus) and paired non-colony sites. Of colonies of black-tailed prairie dogs in our study area, >80 were on slopes of playa lakes; thus, we used sites of colonies and non-colonies that were on slopes of...
Regional seismic stratigraphy and controls on the Quaternary evolution of the Cape Hatteras region of the Atlantic passive margin, USA
D. J. Mallinson, S.J. Culver, S.R. Riggs, E.R. Thieler, D. Foster, J. Wehmiller, K.M. Farrell, J. Pierson
2010, Marine Geology (268) 16-33
Seismic and core data, combined with amino acid racemization and strontium-isotope age data, enable the definition of the Quaternary stratigraphic framework and recognition of geologic controls on the development of the modern coastal system of North Carolina, U.S.A. Seven regionally continuous high amplitude reflections are defined which bound six seismic...
Mid-Piacenzian sea surface temperature record from ODP Site 1115 in the western equatorial Pacific
Danielle Stoll
2010, Stratigraphy (7) 1-6
Planktic foraminifer assemblages and alkenone unsaturation ratios have been analyzed for the mid-Piacen-zian (3.3 to 2.9 Ma) section of Ocean Drilling Program (ODP) Site 1115B, located in the western equatorial Pacific off the coast of New Guinea. Cold and warm season sea surface temperature (SST) estimates were determined using a...
Life history and demographics of the endangered birdwing pearlymussel (Lemiox rimosus) (Bivalvia: Unionidae)
Jess W. Jones, Richard J. Neves, Steven A. Ahlstedt, Don Hubbs, Matthew Johnson, Hua Dan, Brett J.K. Ostby
2010, American Midland Naturalist (163) 335-350
The life history and population demography of the endangered birdwing pearlymussel (Lemiox rimosus) were studied in the Clinch and Duck rivers, Tennessee. Reproducing populations of L. rimosus now occur only in the Clinch, Duck and Powell rivers, as the species is considered extirpated from the remaining portions of its...
Migration of northern yellowstone elk: Implications of spatial structuring
P.J. White, K.M. Proffitt, L.D. Mech, S.B. Evans, J.A. Cunningham, K.L. Hamlin
2010, Journal of Mammalogy (91) 827-837
Migration can enhance survival and recruitment of mammals by increasing access to higher-quality forage or reducing predation risk, or both. We used telemetry locations collected from 140 adult female elk during 20002003 and 20072008 to identify factors influencing the migration of northern Yellowstone elk. Elk wintered in 2 semidistinct herd...
Recruitment in a Colorado population of big brown bats: Breeding probabilities, litter size, and first-year survival
T. J. O'Shea, L.E. Ellison, D.J. Neubaum, M.A. Neubaum, C.A. Reynolds, R. A. Bowen
2010, Journal of Mammalogy (91) 418-428
We used markrecapture estimation techniques and radiography to test hypotheses about 3 important aspects of recruitment in big brown bats (Eptesicus fuscus) in Fort Collins, Colorado: adult breeding probabilities, litter size, and 1st-year survival of young. We marked 2,968 females with passive integrated transponder (PIT) tags at multiple sites during...
