Assessing state-wide biodiversity in the Florida Gap analysis project
L.G. Pearlstine, S. E. Smith, L.A. Brandt, Craig R. Allen, W.M. Kitchens, J. Stenberg
2002, Journal of Environmental Management (66) 127-144
The Florida Gap (FI-Gap) project provides an assessment of the degree to which native animal species and natural communities are or are not represented in existing conservation lands. Those species and communities not adequately represented in areas being managed for native species constitute 'gaps' in the existing network of conservation...
Effects of ENSO on weather-type frequencies and properties at New Orleans, Louisiana, USA
G.J. McCabe, R.A. Muller
2002, Climate Research (20) 95-105
Examination of historical climate records indicates a significant relation between the El Nino/Southern Oscillation (ENSO) and seasonal temperature and precipitation in Louisiana. In this study, a 40 yr record of twice daily (06:00 and 15:00 h local time) weather types are used to study the effects of ENSO variability on...
The National Vegetation Classification Standard applied to the remote sensing classification of two semiarid environments
Elijah W. Ramsey III, G.A. Nelson, D. Echols, S.K. Sapkota
2002, Environmental Management (29) 703-715
The National Vegetation Classification Standard (NVCS) was implemented at two US National Park Service (NPS) sites in Texas, the Padre Island National Seashore (PINS) and the Lake Meredith National Recreation Area (LM-NRA), to provide information for NPS oil and gas management plans. Because NVCS landcover classifications did not exist for...
Early to Middle Proterozoic construction of the Mojave province, southwestern United States
D.S. Coleman, A. P. Barth, J. L. Wooden
2002, Gondwana Research (5) 75-78
Zircon and monazite U-Pb geochronology of rocks in the western Mojave province of the southwest US reveals that the Proterozoic arc exposed there shares an intrusive and deformational history with rocks exposed further east in the Yavapai and Mazatzal belts after approximately 1780 Ma. Consequently, it seems likely that the...
Influence of an extreme high water event on survival, reproduction, and distribution of snail kites in Florida, USA
Robert E. Bennetts, Wiley M. Kitchens, Victoria Dreitz
2002, Wetlands (22) 366-373
Hydrology frequently has been reported as the environmental variable having the greatest influence on Florida snail kite (Rostrhamus sociabilis) populations. Although drought has received the most attention, high-water conditions also have been reported to affect kites. Years of high water generally have been reported to be favorable for nesting, although...
Chemical transport from paired agricultural and restored prairie watersheds
Keith E. Schilling
2002, Journal of Environmental Quality (31) 1184-1193
A five-year record of streamflow and chemical sampling data was evaluated to assess the effects of large-scale prairie restoration on transport of NO3–N, Cl, and SO4 loads from paired 5000-ha watersheds located in Jasper County, Iowa. Water quality conditions monitored during land use conversion from row crop agriculture to native prairie...
SHE analysis for biozonation of benthic foraminiferal assemblages from western arctic ocean
Lisa E. Osterman, Martin A Buzas, Lee-Ann C. Hayek
2002, Palaios (17) 297-303
Benthic foraminiferal species abundance in samples from three Mendeleyev Ridge box cores were analyzed by cluster analysis and the newer method of SHE analysis. Previously, the latter technique only has been used on foraminiferal data from depth transects of modern surface sediment samples. Unlike most methods, which initially compare all...
Groundwater recharge and agricultural contamination
J.K. Böhlke
2002, Hydrogeology Journal (10) 153-179
Agriculture has had direct and indirect effects on the rates and compositions of groundwater recharge and aquifer biogeochemistry. Direct effects include dissolution and transport of excess quantities of fertilizers and associated materials and hydrologic alterations related to irrigation and drainage. Some indirect effects include changes in water–rock reactions in soils...
Site effects in Avcilar, West of Istanbul, Turkey, from strong- and weak-motion data
O. Ozel, E. Cranswick, M. Meremonte, M. Erdik, E. Safak
2002, Bulletin of the Seismological Society of America (92) 499-508
Approximately 1000 people were killed in the collapse of buildings in Istanbul, Turkey, during the 17 August 1999 I??zmit earthquake, whose epicenter was roughly 90 km east of the city. Most of the fatalities and damage occurred in the suburb of Avcilar that is 20 km further west of the...
Mapping apparent stress and energy radiation over fault zones of major earthquakes
Art McGarr, Joe B. Fletcher
2002, Bulletin of the Seismological Society of America (92) 1633-1646
Using published slip models for five major earthquakes, 1979 Imperial Valley, 1989 Loma Prieta, 1992 Landers, 1994 Northridge, and 1995 Kobe, we produce maps of apparent stress and radiated seismic energy over their fault surfaces. The slip models, obtained by inverting seismic and geodetic data, entail the division of the...
Subsurface fluid pressures from drill-stem tests, Uinta Basin, Utah
P. H. Nelson
2002, Mountain Geologist (39) 17-26
High fluid pressures are known to be associated with oil and gas fields in the Uinta Basin, Utah. Shut-in pressure measurements from drill-stem tests show how pressure varies with depth and by area within the basin. The data base used in this report incorporates over 2,000 pressure measurements from drill-stem...
VOLATILECALC: A silicate melt-H2O-CO2 solution model written in Visual Basic for excel
S. Newman, J. B. Lowenstern
2002, Computers & Geosciences (28) 597-604
We present solution models for the rhyolite-H2O-CO2 and basalt-H2O-CO2 systems at magmatic temperatures and pressures below ~ 5000 bar. The models are coded as macros written in Visual Basic for Applications, for use within MicrosoftR Excel (Office'98 and 2000). The series of macros, entitled VOLATILECALC, can calculate the following: (1)...
The Saguenay Fjord, Quebec, Canada: Integrating marine geotechnical and geophysical data for spatial seismic slope stability and hazard assessment
R. Urgeles, J. Locat, H.J. Lee, F. Martin
2002, Marine Geology (185) 319-340
In 1996 a major flood occurred in the Saguenay region, Quebec, Canada, delivering several km3 of sediment to the Saguenay Fjord. Such sediments covered large areas of the, until then, largely contaminated fjord bottom, thus providing a natural capping layer. Recent swath bathymetry data have also shown that sediment landslides...
Low abundance materials at the mars pathfinder landing site: An investigation using spectral mixture analysis and related techniques
J.F. Bell III, W. H. Farrand, J. R. Johnson, R.V. Morris
2002, Icarus (158) 56-71
Recalibrated and geometrically registered multispectral images from the Imager for Mars Pathfinder (IMP) were analyzed using Spectral Mixture Analysis (SMA) and related techniques. SMA models a multispectral image scene as a linear combination of end-member spectra, and anomalous materials which do not fit the model are detected as model residuals....
Effects of a coastal golf complex on water quality, periphyton, and seagrass
M.A. Lewis, R.G. Boustany, D.D. Dantin, R.L. Quarles, J.C. Moore, R. S. Stanley
2002, Ecotoxicology and Environmental Safety (53) 154-162
The objective of this study was to provide baseline information on the effects of a golf course complex on water quality, colonized periphyton, and seagrass meadows in adjacent freshwater, near-coastal, and wetland areas. The chemical and biological impacts of the recreational facility, which uses reclaimed municipal wastewater for irrigation, were...
Estimating recharge at Yucca Mountain, Nevada, USA: Comparison of methods
A. L. Flint, L. E. Flint, E. M. Kwicklis, J. T. Fabryka-Martin, G.S. Bodvarsson
2002, Hydrogeology Journal (10) 180-204
Obtaining values of net infiltration, groundwater travel time, and recharge is necessary at the Yucca Mountain site, Nevada, USA, in order to evaluate the expected performance of a potential repository as a containment system for high-level radioactive waste. However, the geologic complexities of this site, its low precipitation and net...
Reconnaissance-level assessment of water quality near Flandreau, South Dakota
Bryan D. Schaap
2002, Open-File Report 2002-474
This report presents water-quality data that have been compiled and collected for a reconnaissance-level assessment of water quality near Flandreau, South Dakota. The investigation was initiated as a cooperative effort between the U.S. Geological Survey and the Flandreau Santee Sioux Tribe. Members of the Flandreau Santee Sioux Tribe have expressed concern...
Evaluation of some random effects methodology applicable to bird ringing data
K.P. Burnham, Gary C. White
2002, Journal of Applied Statistics (29) 245-264
Existing models for ring recovery and recapture data analysis treat temporal variations in annual survival probability (S) as fixed effects. Often there is no explainable structure to the temporal variation in S1,..., Sk; random effects can then be a useful model: Si = E(S) + ??i. Here, the temporal variation...
Preliminary comparison of landscape pattern-normalized difference vegetation index (NDVI) relationships to central plains stream conditions
J. A. Griffith, E. A. Martinko, J. L. Whistler, K. P. Price
2002, Journal of Environmental Quality (31) 846-859
We explored relationships of water quality parameters with landscape pattern metrics (LPMs), land use–land cover (LULC) proportions, and the advanced very high resolution radiometer (AVHRR) normalized difference vegetation index (NDVI) or NDVI-derived metrics. Stream sites (271) in Nebraska, Kansas, and Missouri were sampled for water quality parameters, the index of...
A statistical evaluation of non-ergodic variogram estimators
F.C. Curriero, M.E. Hohn, A.M. Liebhold, S.R. Lele
2002, Environmental and Ecological Statistics (9) 89-110
Geostatistics is a set of statistical techniques that is increasingly used to characterize spatial dependence in spatially referenced ecological data. A common feature of geostatistics is predicting values at unsampled locations from nearby samples using the kriging algorithm. Modeling spatial dependence in sampled data is necessary before kriging and is...
A source-depth separation filter: Using the Euler method on the derivatives of total intensity magnetic anomaly data
D. Ravat, K. Kirkham, T.G. Hildenbrand
2002, Leading Edge (Tulsa, OK) (21) 360-365
Derivatives of potential-field anomalies (or the anomaly gradients) enhance the field associated with shallow features and de-emphasize the field from deeper sources. The derivative approach of separating anomalies of shallow, intermediate, and deep sourves is, however, qualitative.Semiautomatic source...
Prioritizing conservation potential of arid-land montane natural springs and associated riparian areas
B.C. Thompson, P. L. Matusik-Rowan, K.G. Boykin
2002, Journal of Arid Environments (50) 527-547
Using inventory data and input from natural resource professionals, we developed a classification system that categorizes conservation potential for montane natural springs. This system contains 18 classes based on the presence of a riparian patch, wetland species, surface water, and evidence of human activity. We measured physical and biological components...
Estimation of shoreline position and change using airborne topographic lidar data
H.F. Stockdon, A. H. Sallenger Jr., J. H. List, R.A. Holman
2002, Journal of Coastal Research (18) 502-513
A method has been developed for estimating shoreline position from airborne scanning laser data. This technique allows rapid estimation of objective, GPS-based shoreline positions over hundreds of kilometers of coast, essential for the assessment of large-scale coastal behavior. Shoreline position, defined as the cross-shore position of a vertical shoreline datum,...
The US Geological Survey's national coal resource assessment: The results
Leslie F. Ruppert, Mark A. Kirschbaum, Peter D. Warwick, Romeo M. Flores, Ronald H. Affolter, Joseph R. Hatch
2002, International Journal of Coal Geology (50) 247-274
The US Geological Survey and the State geological surveys of many coal-bearing States recently completed a new assessment of the top producing coal beds and coal zones in five major producing coal regions—the Appalachian Basin, Gulf Coast, Illinois Basin, Colorado Plateau, and Northern Rocky Mountains and Great Plains. The assessments,...
Paleocurrent analysis of a deformed Devonian foreland basin in the northern Appalachians, Maine, USA
D. C. Bradley, L.S. Hanson
2002, Sedimentary Geology (148) 425-447
New paleocurrent data indicate that the widespread Late Silurian and Devonian flysch and molasse succession in Maine was deposited in an ancestral, migrating foreland basin adjacent to an advancing Acadian orogenic belt. The foreland-basin sequence spread across a varied Silurian paleogeography of deep basins and small islands-the vestiges of an...
