Amphibians and disease: Implications for conservation in the Greater Yellowstone Ecosystem
Paul Stephen Corn
2007, Yellowstone Science (15) 11-16
The decline of amphibian populations is a world-wide phenomenon that has received increasing attention since about 1990. In 2004, the World Conservation Union’s global amphibian assessment concluded that 48% of the world’s 5,743 described amphibian species were in decline, with 32% considered threatened (Stuart et al. 2004). Amphibian declines are...
Deep faulting and structural reactivation beneath the southern Illinois basin
J.H. McBride, H.E. Leetaru, R.A. Bauer, B.E. Tingey, S.E.A. Schmidt
2007, Precambrian Research (157) 289-313
The investigation of deep fault structure and seismogenesis within "stable" continental interiors has been hindered by the paucity of detailed subsurface information and by low levels of seismicity. Outstanding seismotectonic questions for these areas include whether pre-existing structures govern the release of seismic energy as earthquakes, can reactivation of such...
Estimation of post-Katrina debris volume
Mark Hansen, Peter Howd, Asbury Sallenger, C. Wayne Wright, Jeff Lillycrop
2007, Circular 1306-3E
Hurricane Katrina severely impacted coastal Mississippi, creating large quantities of building and vegetation debris. This paper summarizes techniques to estimate vegetation and nonvegetation debris quantities from light detection and ranging (lidar) data and presents debris volume results for Harrison County, Miss....
Origin and emplacement of impactites in the Chesapeake Bay impact structure, Virginia, USA
J. Wright Horton, Jr., Gregory Gohn, David S. Powars, Lucy E. Edwards
2007, Special Paper of the Geological Society of America 73-97
The late Eocene Chesapeake Bay impact structure, located on the Atlantic margin of Virginia, may be Earth's best-preserved large impact structure formed in a shallow marine, siliciclastic, continental-shelf environment. It has the form of an inverted...
U/Th series radionuclides as coastal groundwater tracers
P.W. Swarzenski
2007, Chemical Reviews (107) 663-674
The study of coastal groundwater has recently surfaced as an active interdisciplinary area of research, driven foremost by its importance as a poorly quantified pathway for subsurface material transport into coastal ecosystems. Key issue in coastal groundwater research include a complete geochemical characterization of the groundwater(s); quantification of the kinetics...
Passage, survival, and approach patterns of radio-tagged juvenile salmonids at Little Goose Dam, 2006
J.W. Beeman, A.C. Braatz, S.D. Fielding, J.M. Hardiman, C. E. Walker, A.C. Pope, T.S. Wilkerson, D.J. Shurtleff, R.W. Perry, T.D. Counihan
2007, Report
Ages and origins of rocks of the Killingworth dome, south-central Connecticut: Implications for the tectonic evolution of southern New England
J. N. Aleinikoff, R. P. Wintsch, R.P. Tollo, D.M. Unruh, C.M. Fanning, M.D. Schmitz
2007, American Journal of Science (307) 63-118
The Killingworth dome of south-central Connecticut occurs at the southern end of the Bronson Hill belt. It is composed of tonalitic and trondhjemitic orthogneisses (Killingworth complex) and bimodal metavolcanic rocks (Middletown complex) that display calc-alkaline affinities. Orthogneisses of the Killingworth complex (Boulder Lake gneiss, 456 ?? 6 Ma; Pond Meadow...
RELM testing center
D. Schorlemmer, M.C. Gerstenberger
2007, Seismological Research Letters (78) 30-36
[No abstract available]...
Time for a change: Revision of the process for judging student presentations
T.M. Sutton, D.L. Parrish, J.R. Jackson
2007, Conference Paper, Fisheries
[No abstract available]...
Alpine debris flows triggered by a 28 July 1999 thunderstorm in the central Front Range, Colorado
J. W. Godt, J. A. Coe
2007, Geomorphology (84) 80-97
On 28 July 1999, about 480 alpine debris flows were triggered by an afternoon thunderstorm along the Continental Divide in Clear Creek and Summit counties in the central Front Range of Colorado. The thunderstorm produced about 43??mm of rain in 4??h, 35??mm of which fell in the first 2??h. Several...
Digital floodplain mapping and an analysis of errors involved
C.S. Hamblen, D.T. Soong, X. Cai
2007, Conference Paper, Examining the Confluence of Environmental and Water Concerns - Proceedings of the World Environmental and Water Resources Congress 2006
Mapping floodplain boundaries using geographical information system (GIS) and digital elevation models (DEMs) was completed in a recent study. However convenient this method may appear at first, the resulting maps potentially can have unaccounted errors. Mapping the floodplain using GIS is faster than mapping manually, and digital mapping is expected...
Human influence on California fire regimes
A.D. Syphard, V. C. Radeloff, Jon E. Keeley, T. J. Hawbaker, M.K. Clayton, S. I. Stewart, R. B. Hammer
2007, Ecological Applications (17) 1388-1402
Periodic wildfire maintains the integrity and species composition of many ecosystems, including the mediterranean-climate shrublands of California. However, human activities alter natural fire regimes, which can lead to cascading ecological effects. Increased human ignitions at the wildland-urban interface (WUI) have recently gained attention, but fire activity and risk are typically...
Mapping an invasive plant, Phragmites australis, in coastal wetlands using the EO-1 Hyperion hyperspectral sensor
Bruce Pengra, C.A. Johnston, Thomas R. Loveland
2007, Remote Sensing of Environment (108) 74-81
Mapping tools are needed to document the location and extent of Phragmites australis, a tall grass that invades coastal marshes throughout North America, displacing native plant species and degrading wetland habitat. Mapping Phragmites is particularly challenging in the freshwater Great Lakes coastal wetlands due to dynamic lake levels and vegetation...
Using geospatial technology to process 911 calls after Hurricanes Katrina and Rita
Craig P. Conzelmann, William Sleavin, Brady R. Couvillion
2007, Circular 1306-3B
The flooding that ensued in the Greater New Orleans area after Hurricane Katrina left thousands of victims trapped and in need of emergency rescue. This paper describes the processing of raw 911-call data into search and rescue products used by emergency responders after the storm....
Exhumation and continental strike-slip fault systems: Introduction
S. M. Roeske, A.B. Till, D.A. Foster, J.C. Sample
2007, Geological Society of America Special Papers vii-x
Metamorphic rocks adjacent to and within strike-slip faultsystems occur in a wide range of tectonic settings. Detailed studies show that for a number of these locales a significant part of the exhumation occurred during strike-slip fault motion, but the specific processes involved are often cryptic. Although some sites share characteristic...
Oceanography of Glacier Bay, Alaska: Implications for biological patterns in a glacial fjord estuary
L.L. Etherington, P.N. Hooge, Elizabeth Ross Hooge, D.F. Hill
2007, Estuaries and Coasts (30) 927-944
Alaska, U.S.A, is one of the few remaining locations in the world that has fjords that contain temperate idewater glaciers. Studying such estuarine systems provides vital information on how deglaciation affects oceanographic onditions of fjords and surrounding coastal waters. The oceanographic system of Glacier Bay, Alaska, is of particular interest...
Integrated geologic and geophysical studies of North American continental intraplate seismicity
X. Van Lanen, Walter D. Mooney
2007, Special Paper of the Geological Society of America (425) 101-112
The origin of earthquakes within stable continental regions has been the subject of debate over the past thirty years. Here, we examine the correlation of North American stable continental region earthquakes using five geologic and geophysical data sets: (1) a newly compiled age-province map; (2) Bouguer...
Thioarsenates in geothermal waters of Yellowstone National Park: Determination, preservation, and geochemical importance
B. Planer-Friedrich, J. London, R. Blaine McCleskey, D. Kirk Nordstrom, D. Wallschlager
2007, Environmental Science & Technology (41) 5245-5251
Mono-, di-, tri-, and tetrathioarsenate, as well as methylated arsenic oxy- and thioanions, were determined besides arsenite and arsenate in geothermal waters of Yellowstone National Park using anion-exchange chromatography inductively coupled plasma mass spectrometry. Retention time match with synthetic standards, measured S:As ratios, and molecular electrospray mass spectra support the...
Pleistocene Brawley and Ocotillo Formations: Evidence for initial strike-slip deformation along the San Felipe and San Jacinto fault zonez, Southern California
S.M. Kirby, S. U. Janecke, R.J. Dorsey, B.A. Housen, V.E. Langenheim, K. A. McDougall, A.N. Steeley
2007, Journal of Geology (115) 43-62
We examine the Pleistocene tectonic reorganization of the Pacific-North American plate boundary in the Salton Trough of southern California with an integrated approach that includes basin analysis, magnetostratigraphy, and geologic mapping of upper Pliocene to Pleistocene sedimentary rocks in the San Felipe Hills. These deposits preserve the earliest sedimentary record...
Genotype, soil type, and locale effects on reciprocal transplant vigor, endophyte growth, and microbial functional diversity of a narrow sagebrush hybrid zone in Salt Creek Canyon, Utah
K.J. Miglia, E.D. McArthur, R. S. Redman, R. J. Rodriguez, J.C. Zak, D.C. Freeman
2007, American Journal of Botany (94) 425-436
When addressing the nature of ecological adaptation and environmental factors limiting population ranges and contributing to speciation, it is important to consider not only the plant's genotype and its response to the environment, but also any close interactions that it has with other organisms, specifically, symbiotic microorganisms. To investigate this,...
Ore controls in the Charters Towers goldfield, NE Australia: Constraints from geological, geophysical and numerical analyses
O.P. Kreuzer, T.G. Blenkinsop, R.J. Morrison, S. G. Peters
2007, Ore Geology Reviews (32) 37-80
The approach taken in this paper, namely synthesising a wealth of previous information with new data and a genetic model, in combination with integrated numerical analyses, led to new insights into the geological controls on the localisation of auriferous veins and residual prospectivity of the Charters Towers goldfield, NE Australia....
Regional uplift associated with continental large igneous provinces: The roles of mantle plumes and the lithosphere
A.D. Saunders, S.M. Jones, L. A. Morgan, K. L. Pierce, M. Widdowson, Y.G. Xu
2007, Chemical Geology (241) 282-318
The timing and duration of surface uplift associated with large igneous provinces provide important constraints on mantle convection processes. Here we review geological indicators of surface uplift associated with five continent-based magmatic provinces: Emeishan Traps (260??million years ago: Ma), Siberian Traps (251??Ma), Deccan Traps (65??Ma), North Atlantic (Phase 1, 61??Ma...
Freshwater-saltwater transition zone movement during aquifer storage and recovery cycles in Brooklyn and Queens, New York City, USA
Paul E. Misut, Clifford I. Voss
2007, Journal of Hydrology (337) 87-103
Freshwater storage in deep aquifers of Brooklyn and Queens, New York, USA, is under consideration as an emergency water supply for New York City. The purpose of a New York City storage and recovery system is to provide an emergency water supply during times of drought or other contingencies and...
GSA committees: Progress through service the Annual Program Committee
J. E. Costa
2007, GSA Today (17) 56
The GSA's Annual Program Committee (APC) is directly responsible for the GSA's meeting and other responsibilities especially before the main event. It decides on the locations, the number and content of the technical sessions, annual membership surveys, hospitality for the guests, field trips and more. In addition, it pays significant...
Seed rain, soil seed bank, seed loss and regeneration of Castanopsis fargesii (Fagaceae) in a subtropical evergreen broad-leaved forest
X. Du, Q. Guo, X. Gao, K. Ma
2007, Forest Ecology and Management (238) 212-219
Understanding the seed rain and seed loss dynamics in the natural condition has important significance for revealing the natural regeneration mechanisms. We conducted a 3-year field observation on seed rain, seed loss and natural regeneration of Castanopsis fargesii Franch., a dominant tree species in evergreen broad-leaved forests in Dujiangyan, southwestern...
