Ground-motion parameters of the southwestern Indiana earthquake of 18 June 2002 and the disparity between the observed and predicted values
R. Street, J. Wiegand, E.W. Woolery, P. Hart
2005, Seismological Research Letters (76) 512-530
The M 4.5 southwestern Indiana earthquake of 18 June 2002 triggered 46 blast monitors in Indiana, Illinois, and Kentucky. The resulting flee-field particle velocity records, along with similar data from previous earthquakes in the study area, provide a clear standard for judging the reliability of current...
The impact of disease in the American white pelican in North America
Tonie E. Rocke, Kathryn A. Converse, Carol U. Meteyer, R. McLean
2005, Waterbirds (28) 87-94
Records of reported die-offs of the American White Pelican (Pelicanus erythrorhynchos) held by the U.S. Geological Survey National Wildlife Health Center from 1978 through 2003 indicate that type C botulism (caused by Clostridium botulinum) was the major cause of mortality. In 1996, over 15,000 birds, including 8,500 American White Pelicans,...
Hazard map calculations using grid computing
E. H. Field, V. Gupta, N. Gupta, P. Maechling, T.H. Jordan
2005, Seismological Research Letters (76) 565-573
No abstract available....
Preliminary analysis of strong-motion recordings from the 28 September 2004 Parkfield, California earthquake
Anthony Shakal, Vladimir Graizer, Moh Huang, Rodger D. Borcherdt, Hamid Haddadi, Kuo-Wan Lin, Christopher D. Stephens, P. Roffers
2005, Seismological Research Letters (76) 27-39
The 2004 Mw 6.0 Parkfield earthquake of 28 September 2004 occurred on the San Andreas Fault near the small town of Parkfield in central California. As a result of a widely accepted likelihood of an earthquake in the area, a large number of strong-motion stations and...
Subtle structural influences on coal thickness and distribution: Examples from the Lower Broas-Stockton coal (Middle Pennsylvanian), Eastern Kentucky Coal Field, USA
S.F. Greb, C.F. Eble, J.C. Hower
2005, Special Paper of the Geological Society of America 31-50
The Lower Broas-Stockton coal is a heavily mined coal of the Central Appalachian Basin. Coal thickness, distribution, composition, and stratigraphic position were compared with basement structure, gas and oil field trends, and sequence strat- igraphic and paleoclimate interpretations to better understand the geology of the Stockton coal bed in eastern...
NPLichen: a database of lichens in the U.S. national parks
J. P. Bennett, C. M. Wetmore
2005, Evansia (22) 39-42
NPLichen, a database of lichens in the U. S. National Parks (Wetmore and Bennett, 1992), has been extensively revised and expanded, and is now available for public use at www.ies.wisc.edu/nplichen. As of this writing, the database contains 25,995 records of lichens in 144 national park units. The number of records...
Exertional myopathy in whooping cranes (Grus americana) with prognostic guidlelines
C. S. Hanley, Nancy J. Thomas, Joanne R. Paul-Murphy, Barry K. Hartup
2005, Journal of Zoo and Wildlife Medicine (36) 489-497
Exertional myopathy developed in three whooping cranes (Grus americana) secondary to routine capture, handling, and trauma. Presumptive diagnosis of exertional myopathy was based on history of recent capture or trauma, clinical signs, and elevation of aspartate aminotransferase, alanine aminotransferase, creatine kinase, lactate dehydrogenase, and serum potassium. Treatments were attempted...
δ30Si systematics in a granitic saprolite, Puerto Rico
Karen Ziegler, Oliver A. Chadwick, Arthur F. White, Mark A. Brzezinski
2005, Geology (33) 817-820
Granite weathering and clay mineral formation impart distinct and interpretable stable Si isotope (δ30Si) signatures to their solid and aqueous products. Within a saprolite, clay minerals have δ30Si values ∼2.0‰ more negative than their parent mineral and the δ30Si signature of the bulk solid is determined by the ratio of...
Aquifer sensitivity to pesticide leaching: Testing a soils and hydrogeologic index method
E. Mehnert, D.A. Keefer, W.S. Dey, H.A. Wehrmann, S.D. Wilson, C. Ray
2005, Ground Water Monitoring and Remediation (25) 60-67
For years, researchers have sought index and other methods to predict aquifer sensitivity and vulnerability to nonpoint pesticide contamination. In 1995, an index method and map were developed to define aquifer sensitivity to pesticide leaching based on a combination of soil and hydrogeologic factors. The soil factor incorporated three soil...
Lack of significant changes in the herpetofauna of Theodore Roosevelt National Park, North Dakota, since the 1920s
B. R. Hossack, P.S. Corn, D. S. Pilliod
2005, American Midland Naturalist (154) 423-432
We surveyed 88 upland wetlands and 12 1-km river sections for amphibians in Theodore Roosevelt National Park, North Dakota, during 2001–2002 to gather baseline data for future monitoring efforts and to evaluate changes in the distribution of species. We compared our results to collections of herpetofauna made during 1920–1922, 1954...
Tracing sources of streamwater sulfate during snowmelt using S and O isotope ratios of sulfate and 35S activity
James B. Shanley, B. Mayer, M.J. Mitchell, Robert L. Michel, S.W. Bailey, Carol Kendall
2005, Biogeochemistry (76) 161-185
The biogeochemical cycling of sulfur (S) was studied during the 2000 snowmelt at Sleepers River Research Watershed in northeastern Vermont, USA using a hydrochemical and multi-isotope approach. The snowpack and 10 streams of varying size and land use were sampled for analysis of anions, dissolved organic carbon (DOC), 35S activity,...
Recovery of imperiled species under the Endangered Species Act: The need for a new approach
J. Michael Scott, D. D. Goble, John A. Wiens, D. S. Wilcove, M. Bean, Timothy D. Male
2005, Frontiers in Ecology and the Environment (3) 383-389
The recovery (delisting) of a threatened or endangered species is often accompanied by the expectation that conservation management of the species will no longer be necessary. However, the magnitude and pace of human impacts on the environment make it unlikely that substantial progress will be made in delisting many species...
Verification of sex from harvested sea otters using DNA testing
Kim T. Scribner, Ben A. Green, Carol Gorbics, James L. Bodkin
2005, Wildlife Society Bulletin (33) 1027-1032
We used molecular genetic methods to determine the sex of 138 sea otters (Enhydra lutris) harvested from 3 regions of Alaska from 1994 to 1997, to assess the accuracy of post‐harvest field‐sexing. We also tested each of a series of factors associated with errors in field‐sexing of...
Factors influencing the biogeochemistry of sedimentary carbon and phosphorus in the Sacramento-San Joaquin Delta
E. B. Nilsen, M. L. Delaney
2005, Estuaries (28) 653-663
This study characterizes organic carbon (Corganic) and phosphorus (P) geochemistry in surface sediments of the Sacramento-San Joaquin Delta, California. Sediment cores were collected from five sites on a sample transect from the edge of the San Francisco Bay eastward to the freshwater Consumnes River. The top 8 cm of each...
Disentangling association patterns in fission-fusion societies using African buffalo as an example
P.C. Cross, James O. Lloyd-Smith, W.M. Getz
2005, Animal Behaviour (69) 499-506
A description of the social network of a population aids us in understanding dispersal, the spread of disease, and genetic structure in that population. Many animal populations can be classified as fission–fusion societies, whereby groups form and separate over time. Examples discussed in the literature include ungulates, primates and cetaceans...
Decomposition rates and termite assemblage composition in semiarid Africa
Gregor Schuurman
2005, Ecology (86) 1236-1249
Outside of the humid tropics, abiotic factors are generally considered the dominant regulators of decomposition, and biotic influences are frequently not considered in predicting decomposition rates. In this study, I examined the effect of termite assemblage composition and abundance on decomposition of wood litter of an indigenous species (Croton megalobotrys)...
Applications of Radarsat-1 synthetic aperture radar imagery to assess hurricane-related flooding of coastal Louisiana
L.M. Kiage, N.D. Walker, S. Balasubramanian, A. Babin, J. Barras
2005, International Journal of Remote Sensing (26) 5359-5380
The Louisiana coast is subjected to hurricane impacts including flooding of human settlements, river channels and coastal marshes, and salt water intrusion. Information on the extent of flooding is often required quickly for emergency relief, repairs of infrastructure, and production of flood risk maps. This study investigates the feasibility of...
Duelling timescales of host mixing and disease spread determine invasion of disease in structured populations
P.C. Cross, James O. Lloyd-Smith, P.L.F. Johnson, W.M. Getz
2005, Ecology Letters (8) 587-595
The epidemic potential of a disease is traditionally assessed using the basic reproductive number, R0. However, in populations with social or spatial structure a chronic disease is more likely to invade than an acute disease with the same R0, because it persists longer within each group and allows for more...
Thallium isotope composition of the upper continental crust and rivers - An investigation of the continental sources of dissolved marine thallium
S.G. Nielsen, M. Rehkamper, D. Porcelli, P. Andersson, A. N. Halliday, P.W. Swarzenski, C. Latkoczy, D. Gunther
2005, Geochimica et Cosmochimica Acta (69) 2007-2019
The thallium (Tl) concentrations and isotope compositions of various river and estuarine waters, suspended riverine particulates and loess have been determined. These data are used to evaluate whether weathering reactions are associated with significant Tl isotope fractionation and to estimate the average Tl isotope composition of the upper continental crust...
The introduced ribbed mussel (Geukensia demissa) in Estero de Punta Banda, Mexico: Interactions with the native cord grass, Spartina foliosa
Mark E. Torchin, Ryan F. Hechinger, Todd C. Huspeni, Kathleen L. Whitney, Kevin D. Lafferty
2005, Biological Invasions (7) 607-614
Introduced populations of Guekensia demissa occur on the west coast of North America. They have been reported in San Francisco Bay, four southern California wetlands, and in Estero de Punta Banda (EPB), Baja California Norte, Mexico. We randomly sampled benthic invertebrates in four habitat types within EPB: marsh,...
Nebraska, U.S.A.: A new state record for the shortwing snowfly, Allocapnia vivipara (Plecoptera: Capniidae)
R.E. Zuellig, B.C. Kondratieff
2005, Entomological News (116) 111-112
[No abstract available]...
Introduced predators transform subarctic islands from grassland to tundra
D.A. Croll, J.L. Maron, J. A. Estes, E.M. Danner, G.V. Byrd
2005, Science (307) 1959-1961
Top predators often have powerful direct effects on prey populations, but whether these direct effects propagate to the base of terrestrial food webs is debated. There are few examples of trophic cascades strong enough to alter the abundance and composition of entire plant communities. We show that the introduction of...
Should we expect population thresholds for wildlife disease?
James O. Lloyd-Smith, P.C. Cross, C.J. Briggs, M. Daugherty, W.M. Getz, J. Latto, M. Sanchez, A. Smith, A. Swei
2005, Trends in Ecology and Evolution (20) 511-519
Host population thresholds for invasion or persistence of infectious disease are core concepts of disease ecology, and underlie on-going and controversial disease control policies based on culling and vaccination. Empirical evidence for these thresholds in wildlife populations has been sparse, however, though recent studies have narrowed this gap. Here we...
Selenium mobilization during a flood experiment in a contaminated wetland: Stewart Lake Waterfowl Management Area, Utah
D. L. Naftz, J. Yahnke, J. Miller, S. Noyes
2005, Applied Geochemistry (20) 569-585
Constructed and natural wetlands can accumulate elevated levels of Se; however, few data are available on cost-effective methods for remobilization and removal of Se from these areas. A field experiment was conducted to assess the effectiveness of flooding on the removal of Se from dry surface sediments. The 83-m2 flood-experiment...
Climate change and amphibians
P.S. Corn
2005, Animal Biodiversity and Conservation (28) 59-67
Amphibian life histories are exceedingly sensitive to temperature and precipitation, and there is good evidence that recent climate change has already resulted in a shift to breeding earlier in the year for some species. There are also suggestions that the recent increase in the occurrence of El Niño events has...
