Mesohaline submerged aquatic vegetation survey along the U.S. gulf of Mexico coast, 2001 and 2002: A salinity gradient approach
J.H. Merino, J. Carter, S.L. Merino
2009, Gulf of Mexico Science (27) 9-20
Distribution of marine submerged aquatic vegetation (SAV; i.e., seagrass) in the northern Gulf of Mexico coast has been documented, but there are nonmarine submersed or SAV species occurring in estuarine salinities that have not been extensively reported. We sampled 276 SAV beds along the gulf coast in Florida, Alabama, Mississippi,...
Fine sediment affects on survival to emergence of robust redhorse
Cecil A. Jennings, E.W. Dilts, J.L. Shelton Jr., Ronald C. Peterson
2009, Environmental Biology of Fishes (87) 43-53
Robust redhorse (Moxostoma robustum) is a rare riverine sucker for which life history information is scarce. Spawning occurs over loose gravel substrate and eggs and larvae may be adversely affected by fine sediments among the gravel. A 2-year study was conducted to determine the threshold at which fine sediments are...
Survival rates of female greater sage-grouse in autumn and winter in Southeastern Oregon
R.G. Anthony, M.J. Willis
2009, Journal of Wildlife Management (73) 538-545
We estimated survival rates of 135 female greater sage-grouse (Centrocercus urophasianus) on 3 study areas in southeastern Oregon, USA during autumn and winter for 3 years. We used known-fate models in Program MARK to test for differences among study areas and years, investigate the potential influence of weather, and compute...
Comparison with CLPX II airborne data using DMRT model
X. Xu, D. Liang, K.M. Andreadis, L. Tsang, E.G. Josberger
2009, Conference Paper, International Geoscience and Remote Sensing Symposium (IGARSS)
In this paper, we considered a physical-based model which use numerical solution of Maxwell Equations in three-dimensional simulations and apply into Dense Media Radiative Theory (DMRT). The model is validated in two specific dataset from the second Cold Land Processes Experiment (CLPX II) at Alaska and Colorado. The data were...
Improving accessibility to geospatial data using geographic search
J.E. Williams, M.L. Allison, J.B. Kozman
2009, Conference Paper, 2009 17th International Conference on Geoinformatics, Geoinformatics 2009
[No abstract available]...
Silt and gas accumulation beneath an artificial recharge spreading basin, Southwestern Utah, U.S.A.
V.M. Heilweil, D. K. Solomon, G. Ortiz
2009, Boletin Geologico y Minero (120) 185-196
Sand Hollow Reservoir in southwestern Utah, USA, is operated for both surface-water storage and artificial recharge to the underlying Navajo Sandstone. The total volume of estimated artificial recharge between 2002 and 2007 is 85 million cubic meters (69,000 acre-feet). Since 2002, artificial recharge rates have generally been declining and are...
Polydactyly in the central pacific gecko, Lepidodactylus sp. (Squamata: Gekkonidae)
A.M. Bauer, S.A. Hathaway, Robert N. Fisher
2009, Herpetology Notes (2) 243-246
We report the first known case of naturally occurring polydactyly in a gekkotan lizard. A single individual from Palmyra Atoll exhibited a triplication of digit III of the m hand. No obvious teratogenic sources are present on the atoll and the causal factors of polydactyly in Lepidodactylus sp. remain unknown....
Allen's big-eared bat (Idionycteris phyllotis) documented in colorado based on recordings of its distinctive echolocation call
M. A. Hayes, K.W. Navo, L. Bonewell, C.J. Mosch, Rick A. Adams
2009, Southwestern Naturalist (54) 499-501
Allen's big-eared bat (Idionycteris phyllotis) inhabits much of the southwestern USA, but has not been documented in Colorado. We recorded echolocation calls consistent with I. phyllotis near La Sal Creek, Montrose County, Colorado. Based on characteristics of echolocation calls and flight behavior, we conclude that the echolocation calls described here...
Pliocene three-dimensional global ocean temperature reconstruction
H.J. Dowsett, M.M. Robinson, K.M. Foley
2009, Climate of the Past (5) 769-783
The thermal structure of the mid-Piacenzian ocean is obtained by combining the Pliocene Research, Interpretation and Synoptic Mapping Project (PRISM3) multiproxy sea-surface temperature (SST) reconstruction with bottom water temperature estimates from 27 locations produced using Mg/Ca paleothermometry based upon the ostracod genus Krithe. Deep water temperature estimates are skewed toward...
Migration patterns and wintering range of common loons breeding in the Northeastern United States
K.P. Kenow, D. Adams, N. Schoch, D.C. Evers, W. Hanson, D. Yates, L. Savoy, T.J. Fox, A. Major, R. Kratt, J. Ozard
2009, Waterbirds (32) 234-247
A study, using satellite telemetry, was conducted to determine the precise migration patterns and wintering locations of Common Loons (Gavia immer) breeding in the northeastern United States. Transmitters were implanted in 17 loons (16 adults and one juvenile) that were captured on breeding lakes in New York, New Hampshire, and...
Water level observations in mangrove swamps during two hurricanes in Florida
K. W. Krauss, T.W. Doyle, T.J. Doyle, C.M. Swarzenski, A.S. From, Richard H. Day, W.H. Conner
2009, Wetlands (29) 142-149
Little is known about the effectiveness of mangroves in suppressing water level heights during landfall of tropical storms and hurricanes. Recent hurricane strikes along the Gulf Coast of the United States have impacted wetland integrity in some areas and hastened the need to understand how and to what degree coastal...
Hand-mouth transfer and potential for exposure to E. coli and F+ coliphage in beach sand, Chicago, Illinois
R.L. Whitman, K. Przybyla-Kelly, D.A. Shively, M.B. Nevers, M.N. Byappanahalli
2009, Journal of Water and Health (7) 623-629
Beach sand contains fecal indicator bacteria, often in densities greatly exceeding the adjacent swimming waters. We examined the transferability of Escherichia coli and F+ coliphage (MS2) from beach sand to hands in order to estimate the potential subsequent health risk. Sand with high initial E. coli concentrations was collected from...
Revised Dst and the epicycles of magnetic disturbance: 1958-2007
J.J. Love, J.L. Gannon
2009, Annales Geophysicae (27) 3101-3131
A revised version of the storm-time disturbance index Dst is calculated using hourly-mean magnetic-observatory data from four standard observatories and collected over the years 1958-2007. The calculation algorithm is a revision of that established by Sugiura et al., and which is now used by the Kyoto World Data Center for...
Petrographic observations on the Exmore breccia, ICDP-USGS drilling at Eyreville, Chesapeake Bay impact structure, USA
W.U. Reimold, K. Bartosova, R.T. Schmitt, B. Hansen, C. Crasselt, C. Koeberl, A. Wittmann, D.S. Powars
2009, Special Paper of the Geological Society of America 655-698
The International Continental Scientific Drilling Program (ICDP)-U.S. Geological Survey (USGS) Eyreville A and B drill cores sampled crater fill in the region of the crater moat, ??9 km to the NE of the center of the Chesapeake Bay impact structure, Virginia, USA. They provide a 953 m section (444-1397 m...
Soil and nutrient retention in winter-flooded ricefields with implications for watershed management
S.W. Manley, R.M. Kaminski, P.B. Rodrigue, J.C. Dewey, S.H. Schoenholtz, P.D. Gerard, K. J. Reinecke
2009, Journal of Soil and Water Conservation (64) 173-182
The ability of water resources to support aquatic life and human needs depends, in part, on reducing nonpoint source pollution amid contemporary agricultural practices. Winter retention of shallow water on rice and other agricultural fields is an accepted management practice for wildlife conservation; however, soil and water conservation benefits are...
Field camp: Using traditional methods to train the next generation of petroleum geologists
J.O. Puckette, N.H. Suneson
2009, Special Paper of the Geological Society of America 25-34
The summer field camp experience provides many students with their best opportunity to learn the scientific process by making observations and collecting, recording, evaluating, and interpreting geologic data. Field school projects enhance student professional development by requiring cooperation and interpersonal interaction, report writing to communicate interpretations, and the development of...
Geomorphic changes resulting from floods in reconfigured gravel-bed river channels in Colorado, USA
J. G. Elliott, J.P. Capesius
2009, Special Paper of the Geological Society of America 173-198
Geomorphic changes in reconfi gured reaches of three Colorado rivers in response to floods in 2005 provide a benchmark for "restoration" assessment. Sedimententrainment potential is expressed as the ratio of the shear stress from the 2 yr, 5 yr, 10 yr, and 2005 floods to the critical shear stress for...
Megablocks and melt pockets in the Chesapeake Bay impact structure constrained by magnetic field measurements and properties of the Eyreville and Cape Charles cores
A. K. Shah, D. L. Daniels, A. Kontny, J. Brozena
2009, Special Paper of the Geological Society of America 195-208
We use magnetic susceptibility and remanent magnetization measurements of the Eyreville and Cape Charles cores in combination with new and previously collected magnetic field data in order to constrain structural features within the inner basin of the Chesapeake Bay impact structure. The Eyreville core shows the first evidence of several-hundred-meter-thick...
Submarine canyon and fan systems of the California Continental Borderland
W. R. Normark, D.J.W. Piper, B.W. Romans, J.A. Covault, P. Dartnell, R. W. Sliter
2009, Special Paper of the Geological Society of America 141-168
Late Quaternary turbidite and related gravity-flow deposits have accumulated in basins of the California Borderland under a variety of conditions of sediment supply and sea-level stand. The northern basins (Santa Barbara, Santa Monica, and San Pedro) are closed and thus trap virtually all sediment supplied through submarine canyons and smaller...
Short-term effects of hurricane disturbance on food availability for migrant songbirds during autumn stopover
R.C. Dobbs, W.C. Barrow Jr., C.W. Jeske, J. Dimiceli, T.C. Michot, J.W. Beck
2009, Wetlands (29) 123-134
Understanding the consequences of hurricanes on the food resources available to neotropical-nearctic migrant songbirds may provide important insight into the effects of hurricanes on migratory populations. During autumn migration 2006 we investigated the foraging ecology of two species of insectivorous migrants, Blue-gray Gnatcatcher (Polioptila caerulea) and Yellow Warbler (Dendroica petechia),...
Task 1: Whole-body concentrations of elements in kelp bass (Paralabrax clathratus), kelp rockfish (Sebastes atrovirens), and Pacific sanddab (Citharichthys sordidus) from offshore oil platforms and natural areas in the Southern California Bight
Milton S. Love
2009, Report, Reproductive ecology and body burden of resident fish prior to decomissioning
Resource managers are concerned that offshore oil platforms in the Southern California Bight may be contributing to environmental contaminants accumulated by marine fishes. To examine this possibility, 18 kelp bass (Paralabrax clathratus), 80 kelp rockfish (Sebastes atrovirens), and 98 Pacific sanddab (Citharichthys sordidus) were collected from five offshore oil platforms...
Preparing a population for an earthquake like Chi-Chi: The Great Southern California ShakeOut
Lucile M. Jones, The ShakeOut Team
2009, Conference Paper, Improving earthquake mitigation through innovations and applications in seismic science, engineering, communication, and response, Proceedings of a U.S.-Iran seismic workshop
The Great Southern California ShakeOut was a week of special events featuring the largest earthquake drill in United States history. On November 13, 2008, over 5 million southern Californians pretended that a magnitude-7.8 earthquake had occurred and practiced actions that could reduce its impact on their lives. The primary message...
Mineral resource of the month: gallium
Brian W. Jaskula
2009, Earth (54) 29-29
The metal element gallium occurs in very small concentrations in rocks and ores of other metals — native gallium is not known. As society gets more and more high-tech, gallium becomes more useful. Gallium is one of only five metals that are liquid at or close to room temperature. It...
Mineral resource of the month: cobalt
Kim B. Shedd
2009, Earth (54) 31-31
Cobalt is a metal used in numerous commercial, industrial and military applications. On a global basis, the leading use of cobalt is in rechargeable lithium-ion, nickel-cadmium and nickel-metal hydride battery electrodes. Cobalt use has grown rapidly since the early 1990s, with the development of new battery technologies and an increase...
Mineral resource of the month: zinc
Amy C. Tolcin
2009, Earth (54) 29-29
The article provides information on zinc, the fourth most-widely consumed metal. It traces the first use of zinc with the Romans' production of brass. It describes the presence of zinc in Earth's crust and the importance of sphalerite as a source of zinc and other some minor metal production. The...
