Extirpation of freshwater mussels (Bivalvia: Unionidae) following the invasion of dreissenid mussels in an interconnecting river of the Laurentian Great Lakes
Don W. Schloesser, Janice L. Metcalfe-Smith, William P. Kovalak, Gary D. Longton, Rick D. Smithee
2006, American Midland Naturalist (155) 307-320
Previous (1992–1994) surveys for native freshwater mussels (Unionidae) along main channels of the Detroit River showed that unionids had been extirpated from all but four sites in the upper reaches of the river due to impacts of dreissenid mussels (Dreissena polymorpha and D. bugensis). These four sites were surveyed again...
Survey design for detecting rare freshwater mussels
D. R. Smith
2006, Journal of the North American Benthological Society (25) 701-711
A common objective when surveying freshwater mussels is to detect the presence of rare populations. In certain situations, such as when endangered or threatened species are potentially in the area of a proposed impact, the survey should be designed to ensure a high probability of detecting species presence. Linking survey...
The Cenozoic palaeoenvironment of the Arctic Ocean
K. Moran, J. Backman, H. Brinkhuis, S.C. Clemens, Thomas M. Cronin, G.R. Dickens, F. Eynaud, J. Gattacceca, M. Jakobsson, R.W. Jordan, M. Kaminski, J. King, N. Koc, A. Krylov, N. Martinez, J. Matthiessen, D. McInroy, T.C. Moore, J. Onodera, M. O'Regan, H. Palike, B. Rea, D. Rio, T. Sakamoto, D. C. Smith, R. Stein, John K. St, I. Suto, N. Suzuki, K. Takahashi, M. E. Watanabe, M. Yamamoto, J. Farrell, M. Frank, P. Kubik, W. Jokat, Y. Kristoffersen
2006, Nature (441) 601-605
The history of the Arctic Ocean during the Cenozoic era (0–65 million years ago) is largely unknown from direct evidence. Here we present a Cenozoic palaeoceanographic record constructed from >400 m of sediment core from a recent drilling expedition to the Lomonosov ridge in the Arctic Ocean. Our record shows a...
Trophic transfer of trace metals: Subcellular compartmentalization in a polychaete and assimilation by a decapod crustacean
P.S. Rainbow, L. Poirier, B. D. Smith, K.V. Brix, S. N. Luoma
2006, Marine Ecology Progress Series (308) 91-100
The chemical form of accumulated trace metal in prey is important in controlling the bioavailability of dietary metal to a predator. This study investigated the trophic transfer of radiolabelled Ag, Cd and Zn from the polychaete worm Nereis diversicolor to the decapod crustacean Palaemonetes varians. We used 2 populations of worms with different...
Arsenic, cadmium, lead, and mercury in surface soils, Pueblo, Colorado: Implications for population health risk
D.M. Diawara, J.S. Litt, D. Unis, N. Alfonso, L.A. Martinez, J. G. Crock, D. B. Smith, J. Carsella
2006, Environmental Geochemistry and Health (28) 297-315
Decades of intensive industrial and agricultural practices as well as rapid urbanization have left communities like Pueblo, Colorado facing potential health threats from pollution of its soils, air, water and food supply. To address such concerns about environmental contamination, we conducted an urban geochemical study of the city of Pueblo...
Hydraulic properties of the surficial aquifer at five selected sites in the Little Contentnea Creek basin, North Carolina, 2002-03
Douglas G. Smith, Melinda J. Chapman
2005, Scientific Investigations Report 2005-5238
Geochemical landscapes of Alaska — New map presentations and interpretations for 23 elements in surficial materials
L. P. Gough, Bronwen Wang, D. B. Smith, Nils Gustavsson
2005, Professional Paper 1716
No abstract available....
Major- and trace-element concentrations in soils from two continental-scale transects of the United States and Canada
David B. Smith, William F. Cannon, Laurel G. Woodruff, Robert G. Garrett, Rodney Klassen, James E. Kilburn, John D. Horton, Harley D. King, Martin B. Goldhaber, Jean Morrison
2005, Open-File Report 2005-1253
This report contains major- and trace-element concentration data for soil samples collected from 265 sites along two continental-scale transects in North America. One of the transects extends from northern Manitoba to the United States-Mexico border near El Paso, Tex. and consists of 105 sites. The other transect approximately follows the...
Helicopter electromagnetic and magnetic survey data and maps, northern Bexar County, Texas
Bruce D. Smith, Michael J. Cain, Allan K. Clark, David W. Moore, Jason R. Faith, Patricia L. Hill
2005, Open-File Report 2005-1158
New Perspectives on Ancient Mars
S.C. Solomon, O. Aharonson, J.M. Aurnou, W. B. Banerdt, Michael H. Carr, A.J. Dombard, H. V. Frey, Matthew P. Golombek, S.A. Hauck II, J.W. Head, Bruce M. Jakosky, C.L. Johnson, P.J. McGovern, G.A. Neumann, R.J. Phillips, D.E. Smith, Maria Zuber
2005, Science (307) 1214-1220
Mars was most active during its first billion years. The core, mantle, and crust formed within ∼50 million years of solar system formation. A magnetic dynamo in a convecting fluid core magnetized the crust, and the global field shielded a more massive early atmosphere against solar wind stripping. The Tharsis...
Calibrating a tensor magnetic gradiometer using spin data
Robert E. Bracken, David V. Smith, Philip J. Brown
2005, Scientific Investigations Report 2005-5045
Scalar magnetic data are often acquired to discern characteristics of geologic source materials and buried objects. It is evident that a great deal can be done with scalar data, but there are significant advantages to direct measurement of the magnetic gradient tensor in applications with nearby sources, such as unexploded...
Environmental impacts of oil production on soil, bedrock, and vegetation at the U.S. Geological Survey Osage-Skiatook Petroleum Environmental Research site A, Osage County, Oklahoma
J. K. Otton, R. A. Zielinski, B. D. Smith, M.M. Abbott, B. D. Keeland
2005, Environmental Geosciences (12) 73-87
The U.S. Geological Survey is investigating the impacts of oil and gas production on soils, groundwater, surface water, and ecosystems in the United States. Two sites in northeastern Oklahoma (sites A and B) are presently being investigated under the Osage–Skiatook Petroleum Environmental Research project. Oil wells on the lease surrounding...
Two-stage sequential sampling: A neighborhood-free adaptive sampling procedure
M. Salehi, D. R. Smith
2005, Journal of Agricultural, Biological, and Environmental Statistics (10) 84-103
Designing an efficient sampling scheme for a rare and clustered population is a challenging area of research. Adaptive cluster sampling, which has been shown to be viable for such a population, is based on sampling a neighborhood of units around a unit that meets a specified condition. However, the edge...
Comparison of sediment grain size characteristics on nourished and un-nourished estuarine beaches and impacts on horseshoe crab habitat, Delaware Bay, New Jersey
N.L. Jackson, D. R. Smith, K.F. Nordstrom
2005, Zeitschrift fur Geomorphologie, Supplementband (141) 31-45
This study was undertaken to determine whether nourished and un-nourished estuarine beaches have conspicuous differences in sediment size and sorting that could affect their value as habitat for horseshoe crabs. Comparisons are made of beach profiles and sediment samples gathered at 0.15 m and 0.30 m depths on the backshore,...
Influence of waves and horseshoe crab spawning on beach morphology and sediment grain-size characteristics on a sandy estuarine beach
N.L. Jackson, K.F. Nordstrom, D. R. Smith
2005, Sedimentology (52) 1097-1108
The effects of wave action and horseshoe crab spawning on the topography and grain-size characteristics on the foreshore of an estuarine sand beach in Delaware Bay, New Jersey, USA were evaluated using data collected over six consecutive high tides. Data were gathered inside and outside a 25 m long exclosure...
Optimal sampling design for estimating spatial distribution and abundance of a freshwater mussel population
P.S. Pooler, D. R. Smith
2005, Journal of the North American Benthological Society (24) 525-537
We compared the ability of simple random sampling (SRS) and a variety of systematic sampling (SYS) designs to estimate abundance, quantify spatial clustering, and predict spatial distribution of freshwater mussels. Sampling simulations were conducted using data obtained from a census of freshwater mussels in a 40 X 33 m section...
Large-scale 3D subsurface conductivity imaging using full-wave forward modeling
G.L. Wang, W.C. Chew, T.J. Cui, D.L. Wright, D.V. Smith
2005, Conference Paper, IEEE Antennas and Propagation Society, AP-S International Symposium (Digest)
[No abstract available]...
Teleseismic body waves from dynamically rupturing shallow thrust faults: Are they opaque for surface-reflected phases?
D.E. Smith, Brad T. Aagaard, T. H. Heaton
2005, Bulletin of the Seismological Society of America (95) 800-817
We investigate whether a shallow-dipping thrust fault is prone to waveslip interactions via surface-reflected waves affecting the dynamic slip. If so, can these interactions create faults that are opaque to radiated energy? Furthermore, in this case of a shallow-dipping thrust fault, can incorrectly assuming a transparent fault while using dislocation...
Burrowing owl nesting productivity: A comparison between artificial and natural burrows on and off golf courses
M. D. Smith, Courtney J. Conway, L. A. Ellis
2005, Wildlife Society Bulletin (33) 454-462
Burrowing owl (Athene cunicularia) populations are declining in many portions of their range, and lack of suitable nesting burrows is thought to be one reason for observed declines. Burrowing owls are attracted to golf courses because the birds generally nest and forage in short-grass, open areas, yet golf courses seldom...
Critical shear stress for erosion of cohesive soils subjected to temperatures typical of wildfires
J. A. Moody, Smith J. Dungan, B.W. Ragan
2005, Journal of Geophysical Research F: Earth Surface (110)
[1] Increased erosion is a well-known response after wildfire. To predict and to model erosion on a landscape scale requires knowledge of the critical shear stress for the initiation of motion of soil particles. As this soil property is temperature-dependent, a quantitative relation between critical shear stress and the temperatures...
Summer diet of the Peregrine Falcon in faunistically rich and poor zones of Arizona analyzed with capture-recapture modeling
D. H. Ellis, Catherine H. Ellis, B.A. Sabo, A.M. Rea, J. Dawson, J.K. Fackler, C.T. LaRue, T.G. Grubb, J. Schmitt, D.G. Smith, M. Kery
2004, Condor (106) 873-886
We collected prey remains from 25 Peregrine Falcon (Falco peregrinus) territories across Arizona from 1977 to 1988 yielding 58 eyrie-years of data. Along with 793 individual birds (107 species and six additional genera), we found seven mammals and nine insects. In addition, two nestling peregrines were consumed. We found a...
Biosolids, soil, crop, ground-water, and streambed-sediment data for a biosolids-application area near Deer Trail, Colorado, 2002-2003
Tracy J.B. Yager, David B. Smith, James G. Crock
2004, Open-File Report 2004-1404
In January 1999, the U.S. Geological Survey began an expanded monitoring program near Deer Trail, Colorado, in cooperation with the Metro Wastewater Reclamation District and the North Kiowa Bijou Groundwater Management District. Monitoring components were biosolids, soils, crops, ground water, and streambed sediments. The monitoring program addresses concerns from the...
Biosolids, soil, crop, ground-water, and streambed-sediment data for a biosolids-application area near Deer Trail, Colorado, 2001
Tracy J.B. Yager, David B. Smith, James G. Crock
2004, Open-File Report 2004-1388
In January 1999, the U.S. Geological Survey (USGS) began an expanded monitoring program near Deer Trail, Colorado, in cooperation with the Metro Wastewater Reclamation District and the North Kiowa Bijou Groundwater Management District. Monitoring components were biosolids, soils, crops, ground water, and streambed sediment. The monitoring program addresses concerns from...
Surface- and Ground-Water Monitoring and Mapping of Selected Features at the Blue Ridge Parkway Mt. Pisgah Campground, Haywood County, North Carolina, 2002
Douglas G. Smith
2004, Open-File Report 2004-1073
During 2002, a baseline study of hydrologic conditions was conducted, and selected features were mapped within the Mt. Pisgah campground on the Blue Ridge Parkway in Haywood County, North Carolina. Field surveys were performed by using global positioning system equipment one time (January 2002) during the study to locate hydrologic...
Preliminary 40Ar/39Ar geochronology of igneous intrusions from Uvalde County, Texas: Defining a more precise eruption history for the southern Balcones Volcanic Province
Daniel P. Miggins, Charles D. Blome, David V. Smith
2004, Open-File Report 2004-1031
No abstract available....
