Comparing historical catch rates of American shad in multifilament and monofilament nets: A step toward setting restoration targets for Virginia stocks
K.L. Maki, J.M. Hoenig, J.E. Olney, D.M. Heisey
2006, North American Journal of Fisheries Management (26) 282-288
Recreational and commercial harvest of American shad Alosa sapidissima in the Virginia waters of the Chesapeake Bay and its tributaries has been prohibited since 1994. The Atlantic States Marine Fisheries Commission Shad and River Herring Management Plan requires that Virginia develop restoration targets for its shad populations, but estimates of...
Evaluation of bottom trawls as compared to acoustics to assess adult Lake Herring (Coregonus artedi) abundance in Lake Superior
J.D. Stockwell, D.L. Yule, O. T. Gorman, E.J. Isaac, S.A. Moore
2006, Journal of Great Lakes Research (32) 280-292
We compared density estimates from day bottom trawl tows against night midwater trawl tows and acoustic gear to test the hypothesis that adult lake herring (≥250 mm) are underestimated by day bottom trawl tows during the annual USGS spring fish community survey in Lake Superior. We found average density at...
Water color affects the stratification, surface temperature, heat content, and mean epilimnetic irradiance of small lakes
J.N. Houser
2006, Canadian Journal of Fisheries and Aquatic Sciences (63) 2447-2455
The effects of water color on lake stratification, mean epilimnetic irradiance, and lake temperature dynamics were examined in small, north-temperate lakes that differed widely in water color (1.5-19.8 m -1). Among these lakes, colored lakes differed from clear lakes in the following ways: (i) the epilimnia were shallower and colder,...
Influence of potentially confounding factors on sea urchin porewater toxicity tests
R.S. Carr, J.M. Biedenbach, M. Nipper
2006, Archives of Environmental Contamination and Toxicology (51) 573-579
The influence of potentially confounding factors has been identified as a concern for interpreting sea urchin porewater toxicity test data. The results from >40 sediment-quality assessment surveys using early-life stages of the sea urchin Arbacia punctulata were compiled and examined to determine acceptable ranges of natural variables such as pH,...
Linking middle-school teachers to Earthscope
R. Butler, E. Bishop, C. Ault Jr., B. Atwater, B. Magura, C. Hedeen, R. Blakely, Ray E. Wells, K. Shay, R. Wagner, T. Southworth-Neumeyer, D. Connor
2006, Eos, Transactions, American Geophysical Union (87) 257-259
EarthScope is a multidisciplinary geophysical investigation of the structure and deformation of the North American continent. Components include a transportable array of digital seismometers (USArray) that will image the continental crust and underlying mantle, and Global Positioning System (GPS) receivers and strainmeters (Plate Boundary Observatory, PBO) that will measure tectonic...
Effects of wildfire and permafrost on soil organic matter and soil climate in interior Alaska
J.W. Harden, K.L. Manies, M.R. Turetsky, J. C. Neff
2006, Global Change Biology (12) 2391-2403
The influence of discontinuous permafrost on ground-fuel storage, combustion losses, and postfire soil climates was examined after a wildfire near Delta Junction, AK in July 1999. At this site, we sampled soils from a four-way site comparison of burning (burned and unburned) and permafrost (permafrost and nonpermafrost). Soil organic layers...
Visual detection of gas shows from coal core and cuttings using liquid leak detector
C.E. Barker
2006, Bulletin of Canadian Petroleum Geology (54) 292-297
Portions of core or cutting samples that have active gas shows can be identified by applying a liquid leak detector to the core surface. Although these gas shows can be caused by manmade changes to the coals' internal structure and surface of the core during the coring process, in many...
Quantity, composition, and source of sediment collected in sediment traps along the fringing coral reef off Molokai, Hawaii
Michael H. Bothner, R. L. Reynolds, M.A. Casso, C. D. Storlazzi, M.E. Field
2006, Marine Pollution Bulletin (52) 1034-1047
Sediment traps were used to evaluate the frequency, cause, and relative intensity of sediment mobility/resuspension along the fringing coral reef off southern Molokai (February 2000–May 2002). Two storms with high rainfall, floods, and exceptionally high waves resulted in sediment collection rates > 1000 times higher than during non-storm periods, primarily...
Monitoring super-volcanoes: Geophysical and geochemical signals at Yellowstone and other large caldera systems
Jacob B. Lowenstern, Robert B. Smith, David P. Hill
2006, Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences (364) 2055-2072
Earth's largest calderas form as the ground collapses during immense volcanic eruptions, when hundreds to thousands of cubic kilometres of magma are explosively withdrawn from the Earth's crust over a period of days to weeks. Continuing long after such great eruptions, the resulting calderas often exhibit pronounced unrest, with frequent...
Paleotsunami research
B. Rhodes, M. Tuttle, B. Horton, L. Doner, H. Kelsey, A. Nelson, M. Cisternas
2006, Eos, Transactions, American Geophysical Union (87) 208-209
[No abstract available]...
Use of borehole radar tomography to monitor steam injection in fractured limestone
C. Gregoire, P. K. Joesten
2006, Near Surface Geophysics (4) 355-365
Borehole radar tomography was used as part of a pilot study to monitor steam‐enhanced remediation of a fractured limestone contaminated with volatile organic compounds at the former Loring Air Force Base, Maine, USA. Radar tomography data were collected using 100‐MHz electric‐dipole antennae before and during steam injection to evaluate whether...
Shallow gas off the Rhône prodelta, Gulf of Lions
Ana Garcia-Garcia, Daniel L. Orange, T. Lorenson, Olivier Radakovitch, Tommaso Tesi, Stefano Miserocchi, Serge Berne, P.L. Friend, Chuck Nittrouer, Alain Normand
2006, Marine Geology (234) 215-231
Sediment cores acquired in 2004 off the Rhône prodelta show consistent anomalous methane concentrations of up to 87,440 ppm. Methane compositional and isotopic data support a biogenic origin, although there are a few sites that show strongly depleted δ13C values (− 53‰ PDB) suggesting a mixed source for the gas (biogenic...
Coseismic and initial postseismic deformation from the 2004 Parkfield, California, earthquake, observed by global positioning system, electronic distance meter, creepmeters, and borehole strainmeters
J. Langbein, J.R. Murray, Hollice A. Snyder
2006, Bulletin of the Seismological Society of America (96)
Global Positioning System (GPS), electronic distance meter, creepmeter, and strainmeter measurements spanning the M 6.0 Parkfield, California, earthquake are examined. Using these data from 100 sec through 9 months following the main-shock, the Omori's law, with rate inversely related to time, l/t p and p ranging between 0.7 and 1.3,...
Assessment of gamete quality for the eastern oyster (Crassostrea virginica) by use of fluorescent dyes
C. G. Paniagua-Chavez, J. Jenkins, M. Segovia, T.R. Tiersch
2006, Cryobiology (53) 128-138
Evaluation of sperm motility is the single most widely used parameter to determine semen quality in mammals and aquatic species. While a good indicator for fresh sperm viability, post-thaw motility is not always effective at predicting fertilizing ability. Techniques using fluorescent dyes can assess functionality of mammalian sperm, but have...
Distribution and ecology of Dreissena polymorpha (pallas) and Dreissena bugensis (andrusov) in the upper Volga basin
G. Kh Shcherbina, D.R. Buckler
2006, Journal of ASTM International (3)
This paper presents data on contemporary distribution patterns of two species of Dreissenidae, the zebra mussel (Dreissena polymorpha) and the Quagga mussel (Dreissena bugensis), and their role in ecosystem processes in the Ivan'kovo, Uglich, Rybinsk, and Gorky Reservoirs of the Upper Volga River basin. The role of zebra mussel was...
Crustal structure of mainland China from deep seismic sounding data
S. Li, Walter D. Mooney, J. Fan
2006, Tectonophysics (420) 239-252
Since 1958, about ninety seismic refraction/wide angle reflection profiles, with a cumulative length of more than sixty thousand kilometers, have been completed in mainland China. We summarize the results in the form of (1) a new contour map of crustal thickness, (2) fourteen...
Effects of polychlorinated biphenyls, hexachlorocyclohexanes, and mercury on human neutrophil apoptosis, actin cytoskelton, and oxidative state
L.I. Sweet, D. R. Passino-Reader, P.G. Meier, G.M. Omann
2006, Environmental Toxicology and Pharmacology (22) 179-188
Apoptosis, or programmed cell death, has been proposed as a biomarker for environmental contaminant effects. In this work, we test the hypothesis that in vitro assays of apoptosis are sensitive indicators of immunological effects of polychlorinated biphenyls, hexachlorocyclohexanes, and mercury on human neutrophils. Apoptosis, necrosis, and viability as well as...
Modeling movement and fidelity of American black ducks
N.L. Zimpfer, M.J. Conroy
2006, Journal of Wildlife Management (70) 1770-1777
Spatial relationships among stocks of breeding waterfowl can be an important component of harvest management. Prediction and optimal harvest management under adaptive harvest management (AHM) requires information on the spatial relationships among breeding populations (fidelity and inter-year exchange), as well as rates of movements from breeding to harvest regions. We...
2005 annual progress report: Elk and bison grazing ecology in the Great Sand Dunes complex of lands
Kate A. Schoenecker, Bruce C. Lubow, Linda Zeigenfuss, Julie Mao
2006, Open-File Report 2006-1267
In 2000 the U.S. Congress authorized the expansion of the former Great Sand Dunes National Monument by establishing a new Great Sand Dunes National Park and Preserve in its place, and establishing the Baca National Wildlife Refuge. The establishment of Great Sand Dunes National Park and Preserve and the new...
Increased levels of IgE and autoreactive, polyreactive IgG in wild rodents: implications for the hygiene hypothesis
A.P. Devalapalli, A. Lesher, K. Shieh, J.S. Solow, M.L. Everett, A.S. Edala, P. Whitt, Renee R. Long, N. Newton, W. Parker
2006, Scandinavian Journal of Immunology (64) 125-136
To probe the potential role of Th1 versus Th2 reactivity underlying the hygiene hypothesis, intrinsic levels of Th1-associated and Th2-associated antibodies in the serum of wild rodents were compared with that in various strains of laboratory rodents. Studies using rat lung antigens as a target indicated that wild rats have...
Evaluating redband trout habitat in sagebrush desert basins in southwestern Idaho
B.W. Zoellick, B.S. Cade
2006, North American Journal of Fisheries Management (26) 268-281
We estimated abundance quantiles of redband trout Oncorhynchus mykiss gairdneri relative to five site-specific habitat variables (stream shading, bank cover, bank stability, fine sediment in the stream substrate, and cover for adults) and one landscape variable (distance from stream headwaters) on 30 streams in southwestern Idaho during 1993–1998. In addition,...
Experimental infection of the endangered bonytail chub (Gila elegans) with the Asian fish tapeworm (Bothriocephalus acheilognathi): impacts on survival, growth, and condition
S. P. Hansen, A. Choudhury, D.M. Heisey, J.A. Ahumada, T.L. Hoffnagle, Rebecca A. Cole
2006, Canadian Journal of Zoology (84) 1383-1394
Bothriocephalus acheilognathi Yamaguti, 1934, a tapeworm known to be pathogenic to some fish species, has become established in the endangered humpback chub (Gila cypha Miller, 1964) in Grand Canyon, USA, following the tapeworm’s introduction into the Colorado River system. The potential impact of this tapeworm on humpback chub was studied...
Surveillance for Asian H5N1 avian influenza in the United States
S. Ip, Paul G. Slota
2006, Fact Sheet 2006-3025
Increasing concern over the potential for migratory birds to introduce the Asian H5N1 strain of avian influenza to North America prompted the White House Policy Coordinating Committee for Pandemic Influenza Preparedness to request that the U.S. Departments of Agriculture (USDA) and Interior (DOI) develop a plan for the early detection...
USGS/National Wildlife Health Center's Quarterly Wildlife Mortality Report
R. Sohn, K. A. Converse, G. McLaughlin
2006, Supplement to the Journal of Wildlife Diseases (42)
Systematically describing gross lesions in corals
Thierry M. Work, Greta S. Aeby
2006, Diseases of Aquatic Organisms (70) 155-160
Many coral diseases are characterized based on gross descriptions and, given the lack or difficulty of applying existing laboratory tools to understanding causes of coral diseases, most new diseases will continued to be described based on appearance in the field. Unfortunately, many existing descriptions of coral disease are ambiguous or...
