Devils Hole, Nevada, δ18O record extended to the mid-Holocene
Isaac J. Winograd, Jurate M. Landwehr, Tyler B. Coplen, Warren D. Sharp, Alan C. Riggs, Kenneth R. Ludwig, Peter T. Kolesar
2006, Quaternary Research (66) 202-212
The mid-to-late Pleistocene Devils Hole δ18O record has been extended from 60,000 to 4500 yr ago. The new δ18O time series, in conjunction with the one previously published, is shown to be a proxy of Pacific Ocean sea surface temperature (SST) off the coast of California. During marine oxygen isotope stages...
Bluff evolution along coastal drumlins: Boston Harbor Islands, Massachusetts
E. A. Himmelstoss, D. M. FitzGerald, P.S. Rosen, J.R. Allen
2006, Journal of Coastal Research (22) 1230-1240
A series of partially drowned drumlins forms the backbone of the inner islands within Boston Harbor. The shoreline of these rounded glacial deposits is composed of actively retreating bluffs formed by continual wave attack. Comparisons of bluffs reveal variability in their height and lateral extent, as well as in the...
River size and fish assemblages in southwestern South Dakota
C.W. Hoagstrom, S.S. Wall, J.P. Duehr, C. R. Berry Jr.
2006, Great Plains Research (16) 117-126
We studied relations between river size, fish species diversity, and fish species composition along four major rivers in the Great Plains of southwestern South Dakota to assess patterns of species diversity and composition. We expected diversity to increase with river size and fish composition to change via species addition downstream....
Northern goshawk diet during the nesting season in southeast Alaska
S.B. Lewis, K. Titus, M.R. Fuller
2006, Journal of Wildlife Management (70) 1151-1160
[No abstract available]...
Growth, body condition, reproduction and survival of stocked barrens topminnows, Fundulus julisia (Fundulidae)
C.A. Goldsworthy, P.W. Bettoli
2006, American Midland Naturalist (156) 331-343
We documented the fate of 29 cohorts of propagated Barrens topminnows Fundulus julisia stocked as juveniles and adults (ntotal = 2770 fish) into 17 springheads and small ponds in middle Tennessee in 2003 and 2004. Annual mortality rates were calculated after estimating the number of individuals of each cohort remaining...
Influence of deflection on a fold-to-fault progression: field evidence from near Marietta, South Carolina
C.W. Clendenin, J.M. Garihan
2006, Journal of Structural Geology (28) 1316-1326
Four periods of deformation (D1-D4) are recognized in the Lion Park Road borrow pit near Marietta, South Carolina. Although each period is characterized by distinct structures, D3 produced two structural styles (D3a, D3b) resulting from layer-parallel shortening. D3a is characterized by detachment folding at the tip of an underlying thrust....
Simulating the influences of various fire regimes on caribou winter habitat
T. Scott Rupp, Mark Olson, Layne G. Adams, Bruce W. Dale, Kyle Joly, Jonathan Henkelman, William B. Collins, Anthony M. Starfield
2006, Ecological Applications (16) 1730-1743
Caribou are an integral component of high‐latitude ecosystems and represent a major subsistence food source for many northern people. The availability and quality of winter habitat is critical to sustain these caribou populations. Caribou commonly use older spruce woodlands with adequate terrestrial lichen, a preferred winter forage, in the understory....
Assimilation of snow covered area information into hydrologic and land-surface models
M.P. Clark, A.G. Slater, A.P. Barrett, L.E. Hay, G.J. McCabe, B. Rajagopalan, G.H. Leavesley
2006, Advances in Water Resources (29) 1209-1221
This paper describes a data assimilation method that uses observations of snow covered area (SCA) to update hydrologic model states in a mountainous catchment in Colorado. The assimilation method uses SCA information as part of an ensemble Kalman filter to alter the sub-basin distribution of snow as well as the...
Derivation of planetary topography using multi-image shape-from-shading
Volker Lohse, Christian Heipke, Randolph L. Kirk
2006, Planetary and Space Science (54) 661-674
In many cases, the derivation of high-resolution digital terrain models (DTMs) from planetary surfaces using conventional digital image matching is a problem. The matching methods need at least one stereo pair of images with sufficient texture. However, many space missions provide only a few stereo images and planetary surfaces often...
Modeling the probability of arsenic in groundwater in New England as a tool for exposure assessment
J. D. Ayotte, B. T. Nolan, J.R. Nuckols, K.P. Cantor, G.R. Robinson Jr., D. Baris, L. Hayes, M. Karagas, W. Bress, D.T. Silverman, J.H. Lubin
2006, Environmental Science & Technology (40) 3578-3585
We developed a process-based model to predict the probability of arsenic exceeding 5 ??g/L in drinking water wells in New England bedrock aquifers. The model is being used for exposure assessment in an epidemiologic study of bladder cancer. One important study hypothesis that may explain increased bladder cancer risk is...
Spatial epidemiology of chronic wasting disease in Wisconsin white-tailed deer
D.O. Joly, M.D. Samuel, J.A. Langenberg, Julie A. Blanchong, C.A. Batha, R.E. Rolley, D.P. Keane, C. A. Ribic
2006, Journal of Wildlife Diseases (42) 578-588
Chronic wasting disease (CWD) is a fatal, emerging disease of cervids associated with transmissible protease-resistant prion proteins. The potential for CWD to cause dramatic declines in deer and elk populations and perceived human health risks associated with consuming CWD-contaminated venison have led wildlife agencies to embark on extensive CWD control...
Recovery of the black-footed ferret: Progress and continuing challenges- Proceedings of the Symposium on the Status of the Black-footed Ferret and Its Habitat, Fort Collins, Colorado, January 28-29, 2004
James E. Roelle, Brian J. Miller, Jerry L. Godbey, Dean E. Biggins, editor(s)
2006, Scientific Investigations Report 2005-5293
The black-footed ferret (Mustela nigripes) is a member of the weasel family (Mustelidae) and is closely related to the Siberian polecat (M. eversmannii) of Asian steppes and the European polecat (M. putorius). Compared to its relatives, the black-footed ferret is an extreme specialist, depending on the prairie dogs (Cynomys spp.)...
Calcite-graphite thermometry of the Franklin Marble, New Jersey Highlands
W.H. Peck, R.A. Volkert, M.T. Meredith, E.L. Rader
2006, Journal of Geology (114) 485-499
We present new stable-isotope data for the Mesoproterozoic Franklin Marble from outcrops along an 80-km traverse parallel to and across strike of the structural grain of the western New Jersey Highlands. Calcite and dolomite from marble have an average ??13C of 0.35??? ?? 0.73??? PDB (n = 46) and a...
Shallow stratigraphy and sedimentation history during high-frequency sea-level changes on the central California shelf
E. E. Grossman, S.L. Eittreim, M.E. Field, F. L. Wong
2006, Continental Shelf Research (26) 1217-1239
Analyses of high-resolution seismic-reflection data and sediment cores indicate that an extensive sediment deposit on the central California continental shelf is comprised of several late-Pleistocene to Holocene age facies. Offshore of the littoral zone, in water depths of 30-90 m, a 3-6 m thick veneer of fine sediment referred to...
Flooding on California's Russian River: Role of atmospheric rivers
F.M. Ralph, P.J. Neiman, G.A. Wick, S.I. Gutman, M. D. Dettinger, D.R. Cayan, A.B. White
2006, Geophysical Research Letters (33)
Experimental observations collected during meteorological field studies conducted by the National Oceanic and Atmospheric Administration near the Russian River of coastal northern California are combined with SSM/I satellite observations offshore to examine the role of landfalling atmospheric rivers in the creation of flooding. While recent studies have documented the characteristics...
Hurricanes, submarine groundwater discharge, and Florida's red tides
C. Hu, F. E. Muller-Karger, P.W. Swarzenski
2006, Geophysical Research Letters (33)
A Karenia brevis Harmful Algal Bloom affected coastal waters shallower than 50 m off west-central Florida from January 2005 through January 2006, showing a sustained anomaly of ???1 mg chlorophyll m-3 over an area of up to 67,500 km2. Red tides occur in the same area (approximately 26-29??N, 82-83??W) almost...
Effectiveness of spinning-wing decoys varies among dabbling duck species and locations
Joshua T. Ackerman, J.M. Eadie, M.L. Szymanski, J.H. Caswell, Mark P. Vrtiska, Andrew H. Raedeke, J.M. Checkett, A. D. Afton, T.G. Moore, F. Dale Caswell, R. A. Walters, D.D. Humburg, J.L. Yee
2006, Journal of Wildlife Management (70) 799-804
Spinning-wing decoys are strong attractants to ducks and inc rease kill rates over traditional decoying methods. However, it is unknown whether all duck species are attracted similarly to spinning-wing decoys and whether the effectiveness of these decoys changes with latitude. We examined the effectiveness of spinning-wing decoys for 9 species...
Arctic-Yukon-Kuskokwim Salmon Research and Restoration Plan
2006, Report
The Arctic-Yukon-Kuskokwim Sustainable Salmon Initiative (AYK SSI) is an innovative partnership between public and private institutions which provides a forum for non-governmental organizations and state and federal agencies to cooperatively identify and address salmon research and restoration needs. The affected region encompasses over 40% of the State of Alaska; the...
Spatial nonlinearities: Cascading effects in the earth system
Debra P.C. Peters, R.A. Pielke, B.T. Bestelmeyer, Craig D. Allen, Stuart Munson-McGee, K. M. Havstad
Josep G. Canadell, Diane E. Pataki, Louis F. Pitelka, editor(s)
2006, Book chapter, Terrestrial ecosystems in a changing world
Nonlinear behavior is prevalent in all aspects of the Earth System, including ecological responses to global change (Gallagher and Appenzeller 1999; Steffen et al. 2004). Nonlinear behavior refers to a large, discontinuous change in response to a small change in a driving variable (Rial et al. 2004). In contrast to...
Use of Picard and Newton iteration for solving nonlinear ground water flow equations
S. Mehl
2006, Ground Water (44) 583-594
This study examines the use of Picard and Newton iteration to solve the nonlinear, saturated ground water flow equation. Here, a simple three-node problem is used to demonstrate the convergence difficulties that can arise when solving the nonlinear, saturated ground water flow equation in both homogeneous and heterogeneous systems with...
Satellite-derived, melt-season surface temperature of the Greenland Ice Sheet (2000-2005) and its relationship to mass balance
D.K. Hall, R.S. Williams Jr., K.A. Casey, N.E. DiGirolamo, Z. Wan
2006, Geophysical Research Letters (33)
Mean, clear-sky surface temperature of the Greenland Ice Sheet was measured for each melt season from 2000 to 2005 using Moderate-Resolution Imaging Spectroradiometer (MODIS)–derived land-surface temperature (LST) data-product maps. During the period of most-active melt, the mean, clear-sky surface temperature of the ice sheet was highest in 2002 (−8.29 ±...
Use of NEXRAD to study shorebird migration in the Prairie Pothole region: A feasibility study
Cynthia P. Melcher, Susan K. Skagen, Lori Randall
2006, Open-File Report 2006-1033
An essential component of shorebird conservation is identifying, protecting, and managing high-priority stopover sites and migration habitats crucial to the long-term persistence of migrating shorebirds. Because of the tremendous variability in migrant shorebird occurrence patterns in the Prairie Pothole Region of the U.S. (Skagen 1997), it is labor- and cost-intensive...
Abundance of adult horseshoe crabs (Limulus polylphemus) in Delaware Bay estimated from a bay-wide mark-recapture study
D. R. Smith, M. J. Millard, S. Eyler
2006, Fishery Bulletin (104) 456-464
Estimates of the abundance of American horseshoe crabs (Limulus polyphemus) are important to determine egg production and to manage populations for the energetic needs of shorebirds that feed on horseshoe crab eggs. In 2003, over 17,500 horseshoe crabs were tagged and released throughout Delaware Bay, and recaptured crabs came from...
Earthquakes triggered by silent slip events on Kīlauea volcano, Hawaii
Paul Segall, Emily K. Desmarais, David Shelly, Asta Mikijus, Peter F. Cervelli
2006, Nature (442) 71-74
Slow-slip events, or ‘silent earthquakes’, have recently been discovered in a number of subduction zones including the Nankai trough1, 2, 3 in Japan, Cascadia4, 5, and Guerrero6 in Mexico, but the depths of these events have been difficult to determine from surface deformation measurements. Although it is assumed that...
Influence of propagule flotation longevity and light availability on establishment of introduced mangrove species in Hawai'i
J. A. Allen, K. W. Krauss
2006, Pacific Science (60) 367-376
Although no mangrove species are native to the Hawaiian Archipelago, both Rbizopbora mangle and Bruguiera sexangula were introduced and have become naturalized. Rbizopbora mangle has spread to almost every major Hawaiian island, but B. sexangula has established only on O'ahu, where it was intentionally introduced. To examine the possibility that...
