The quest for a safe and effective canine distemper virus vaccine for black-footed ferrets
Jeffrey Wimsatt, Dean E. Biggins, Elizabeth S. Williams, Victor M. Becerra
2006, Conference Paper, Recovery of the black-footed ferret: Progress and continuing challenges- Proceedings of the Symposium on the Status of the Black-footed Ferret and Its Habitat, Fort Collins, Colorado, January 28-29, 2004 (Scientific Investigations Report 2005-5293)
Canine distemper virus (CDV) causes a systemic disease that is highly virulent to mustelids and other carnivore (Order Carnivora) species and is found worldwide. Endemic canine distemper in wild and domestic carnivores in the United States has made reintroduction of endangered black-footed ferrets (Mustela nigripes) difficult in the absence of...
Probabilistic analysis of tsunami hazards
E.L. Geist, T. Parsons
2006, Natural Hazards (37) 277-314
Determining the likelihood of a disaster is a key component of any comprehensive hazard assessment. This is particularly true for tsunamis, even though most tsunami hazard assessments have in the past relied on scenario or deterministic type models. We discuss probabilistic tsunami hazard analysis (PTHA) from the standpoint of integrating...
The quest for the perfect gravity anomaly: Part 1 - New calculation standards
X. Li, T.G. Hildenbrand, W. J. Hinze, Gordon R. Keller, D. Ravat, M. Webring
2006, SEG Technical Program Expanded Abstracts (25) 859-863
The North American gravity database together with databases from Canada, Mexico, and the United States are being revised to improve their coverage, versatility, and accuracy. An important part of this effort is revision of procedures and standards for calculating gravity anomalies taking into account our enhanced computational power, modern satellite-based...
Atmospheric dust in modern soil on aeolian sandstone, Colorado Plateau (USA): Variation with landscape position and contribution to potential plant nutrients
Richard L. Reynolds, J. Neff, Marith C. Reheis, Paul J. Lamothe
2006, Geoderma (130) 108-123
Rock-derived nutrients in soils originate from both local bedrock and atmospheric dust, including dust from far-distant sources. Distinction between fine particles derived from local bedrock and from dust provides better understanding of the landscape-scale distribution and abundance of soil nutrients. Sandy surficial deposits over dominantly sandstone substrates, covering vast upland...
Population dynamics of Greater Scaup breeding on the Yukon-Kuskokwim Delta, Alaska
Paul L. Flint, J. Barry Grand, Thomas F. Fondell, Julie A. Morse
2006, Wildlife Monographs (162) 1-22
Populations of greater scaup (Aythya marila) remained relatively stable during a period when populations of lesser scaup (A. affinis) have declined from historic levels. To assist in describing these differences in population trends, from 1991 through 2000, we studied the survival, nesting ecology, and productivity of greater scaup on the...
Temporal evolution of carbon budgets of the Appalachian forests in the U.S. from 1972 to 2000
J. Liu, S. Liu, Thomas R. Loveland
2006, Forest Ecology and Management (222) 191-201
Estimating dynamic terrestrial ecosystem carbon (C) sources and sinks over large areas is difficult. The scaling of C sources and sinks from the field level to the regional level has been challenging due to the variations of climate, soil, vegetation, and disturbances. As part of an effort to estimate the...
Timing of Cenozoic volcanism and Basin and Range extension in northwestern Nevada: New constraints from the northern Pine Forest Range
J.P. Colgan, T.A. Dumitru, M. McWilliams, E. L. Miller
2006, Geological Society of America Bulletin (118) 126-139
Eocene-middle Miocene volcanic rocks in the northern Pine Forest Range, Nevada, are ideally situated for reconstructing the timing and style of volcanism and extensional faulting in the northwesternmost part of the Basin and Range province. A conformable sequence of Cenozoic volcanic and sedimentary strata in the northern Pine Forest Range...
Uncertainty of earthquake losses due to model uncertainty of input ground motions in the Los Angeles area
T. Cao, M.D. Petersen
2006, Bulletin of the Seismological Society of America (96) 365-376
In a recent study we used the Monte Carlo simulation method to evaluate the ground-motion uncertainty of the 2002 update of the California probabilistic seismic hazard model. The resulting ground-motion distribution is used in this article to evaluate the contribution of the hazard model to the uncertainty in earthquake loss...
Evidence of regional subsidence and associated interior wetland loss induced by hydrocarbon production, Gulf Coast region, USA
R.A. Morton, J.C. Bernier, J.A. Barras
2006, Environmental Geology (50) 261-274
Analysis of remote images, elevation surveys, stratigraphic cross-sections, and hydrocarbon production data demonstrates that extensive areas of wetland loss in the northern Gulf Coast region of the United States were associated with large-volume fluid production from mature petroleum fields. Interior wetland losses at many sites in coastal Louisiana and Texas...
Proximity to crops and residential to agricultural herbicides in Iowa
M.H. Ward, J. Lubin, J. Giglierano, J.S. Colt, C. Wolter, N. Bekiroglu, D. Camann, P. Hartge, J.R. Nuckols
2006, Environmental Health Perspectives (114) 893-897
Rural residents can be exposed to agricultural pesticides through the proximity of their homes to crop fields. Previously, we developed a method to create historical crop maps using a geographic information system. The aim of the present study was to determine whether crop maps are useful for predicting levels of...
Improving data analysis in herpetology: Using Akaike's information criterion (AIC) to assess the strength of biological hypotheses
M. J. Mazerolle
2006, Amphibia-Reptilia (27) 169-180
In ecology, researchers frequently use observational studies to explain a given pattern, such as the number of individuals in a habitat patch, with a large number of explanatory (i.e., independent) variables. To elucidate such relationships, ecologists have long relied on hypothesis testing to include or exclude variables in regression models,...
Linking landscape characteristics to mineral site use by band-tailed pigeons in Western Oregon: Coarse-filter conservation with fine-filter tuning
C.T. Overton, R.A. Schmitz, Michael L. Casazza
2006, Natural Areas Journal (26) 38-46
Mineral sites are scarce resources of high ion concentration used heavily by the Pacific Coast subpopulation of band-tailed pigeons. Over 20% of all known mineral sites used by band-tailed pigeons in western Oregon, including all hot springs, have been abandoned. Prior investigations have not analyzed stand or landscape level habitat...
Modeling decadal timescale interactions between surface water and ground water in the central Everglades, Florida, USA
J. W. Harvey, J.T. Newlin, S.L. Krupa
2006, Journal of Hydrology (320) 400-420
Surface-water and ground-water flow are coupled in the central Everglades, although the remoteness of this system has hindered many previous attempts to quantify interactions between surface water and ground water. We modeled flow through a 43,000 ha basin in the central Everglades called Water Conservation Area 2A. The purpose of...
Petrography, palynology, and paleoecology of the Lower Pennsylvanian Bon Air coal, Franklin County, Cumberland Plateau, southeast Tennessee
S.A. Shaver, C.F. Eble, J.C. Hower, F.L. Saussy
2006, International Journal of Coal Geology (67) 17-46
Stratigraphy, palynology, petrography, and geochemistry of the Bon Air coal from the Armfield, Dotson, Rutledge, and Shakerag mine sites of Franklin County, Tennessee suggest that Bon Air seams at all sites were small (??? 1.0 mile, 1.6 km), spatially distinct paleomires that evolved from planar to domed within the fluviodeltaic...
Interaction Assessment: A modeling tool for predicting population dynamics from field data
John M. Emlen, Jeffrey J. Duda, Matt D. Kirchhoff, D. Carl Freeman
2006, Ecological Modelling (192) 557-570
Interaction Assessment (INTASS) is a field and analytic methodology for constructing population dynamics models. Because data collected in generating a model for one species comprise much of the information needed for other species, a small increase in effort can result in simultaneous expressions for the dynamics of multiple species. These...
Changes in seasonal energy dynamics of alewife (Alosa pseudoharengus) in Lake Michigan after invasion of dreissenid mussels
Charles P. Madenjian, Steven A. Pothoven, John M. Dettmers, Jeffrey D. Holuszko
2006, Canadian Journal of Fisheries and Aquatic Sciences (63) 891-902
The dreissenid mussel invasion of Lake Michigan during the 1990s has been linked to a concomitant decrease in the abundance of the amphipod Diporeia. We tracked the seasonal energy dynamics of alewife (Alosa pseudoharengus) in Lake Michigan during 2002–2004 and compared our findings with previously published results for years 1979–1981. Adult...
Nitrogen loads to estuaries from waste water plumes: Modeling and isotopic approaches
K.D. Kroeger, Marci L. Cole, J.K. York, I. Valiela
2006, Ground Water (44) 188-200
We developed, and applied in two sites, novel methods to measure ground water-borne nitrogen loads to receiving estuaries from plumes resulting from land disposal of waste water treatment plant (WWTP) effluent. In addition, we quantified nitrogen losses from WWTP effluent during transport through watersheds. WWTP load to receiving water was...
Predicting crappie recruitment in Ohio reservoirs with spawning stock size, larval density, and chlorophyll concentrations
David B. Bunnell, R. Scott Hale, Michael J. Vanni, Roy A. Stein
2006, North American Journal of Fisheries Management (26) 1-12
Stock-recruit models typically use only spawning stock size as a predictor of recruitment to a fishery. In this paper, however, we used spawning stock size as well as larval density and key environmental variables to predict recruitment of white crappies Pomoxis annularis and black crappies P. nigromaculatus, a genus notorious...
Modeling wetland plant community response to assess water-level regulation scenarios in the Lake Ontario-St. Lawrence River basin
Christiane Hudon, Douglas Wilcox, Joel Ingram
2006, Environmental Monitoring and Assessment (113) 303-328
The International Joint Commission has recently completed a five-year study (2000-2005) to review the operation of structures controlling the flows and levels of the Lake Ontario - St. Lawrence River system. In addition to addressing the multitude of stakeholder interests, the regulation plan review also considers environmental sustainability and integrity...
Evaluation of gridded snow water equivalent and satellite snow cover products for mountain basins in a hydrologic model
K.A. Dressler, G.H. Leavesley, R.C. Bales, S.R. Fassnacht
2006, Conference Paper, Hydrological Processes
The USGS precipitation-runoff modelling system (PRMS) hydrologic model was used to evaluate experimental, gridded, 1 km2 snow-covered area (SCA) and snow water equivalent (SWE) products for two headwater basins within the Rio Grande (i.e. upper Rio Grande River basin) and Salt River (i.e. Black River basin) drainages in the southwestern...
GIS-based niche modeling for mapping species' habitats
J.T. Rotenberry, K.L. Preston, S. Knick
2006, Ecology (87) 1458-1464
Ecological a??niche modelinga?? using presence-only locality data and large-scale environmental variables provides a powerful tool for identifying and mapping suitable habitat for species over large spatial extents. We describe a niche modeling approach that identifies a minimum (rather than an optimum) set of basic habitat requirements for a species, based...
Conceptual ecological model for management of breeding grassland birds in the Mid-Atlantic Region
Bruce G. Peterjohn
2006, Natural Resource Report NPS/NER/NRR--2006/005
The status of grassland birds has become an increasingly important conservation issue. These species exhibit the most consistent population declines of any group of North American birds during the past 40 years. Anecdotal evidence suggests these declines have been occurring for nearly a century (Peterjohn and Sauer 1999). While the...
Influence of landscape-scale factors in limiting brook trout populations in Pennsylvania streams
P.M. Kocovsky, R.F. Carline
2006, Transactions of the American Fisheries Society (135) 76-88
Landscapes influence the capacity of streams to produce trout through their effect on water chemistry and other factors at the reach scale. Trout abundance also fluctuates over time; thus, to thoroughly understand how spatial factors at landscape scales affect trout populations, one must assess the changes in populations over time...
The contingent behavior of charter fishing participants on the Chesapeake Bay: Welfare estimates associated with water quality improvements
P.J. Poor, M. Breece
2006, Journal of Environmental Planning and Management (49) 265-278
Water quality in the Chesapeake Bay has deteriorated over recent years. Historically, fishing has contributed to the region's local economy in terms of commercial and recreational harvests. A contingent behavior model is used to estimate welfare measures for charter fishing participants with regard to a hypothetical improvement in water quality....
Quiescent deformation of the Aniakchak Caldera, Alaska mapped by InSAR
Oh-Ig Kwoun, Zhong Lu, Christina A. Neal, Charles W. Wicks Jr.
2006, Geology (34) 5-8
The 10-km-wide caldera of the historically active Aniakchak volcano, Alaska, subsides ∼13 mm/yr, based on data from 19 European Remote Sensing Satellite (ERS-1 and ERS-2) interferometric synthetic aperture radar (InSAR) images from 1992 through 2002. The pattern of subsidence does not reflect the distribution of pyroclastic deposits from the last...
