Use of decision support systems as a drought management tool
D. Frevert, H. Lins
Moglen G.E., editor(s)
2005, Conference Paper, Proceedings of the 2005 Watershed Management Conference - Managing Watersheds for Human and Natural Impacts: Engineering, Ecological, and Economic Challenges
Droughts present a unique challenge to water managers throughout the world and the current drought in the western United States is taxing facilities to the limit. Coping with this severe drought requires state of the art decision support systems including efficient and accurate hydrologic process models, detailed hydrologic data bases...
The relationship between habitat characteristics and demographic performance of northern spotted owls in southern Oregon
Katie M. Dugger, Frank Wagner, Robert G. Anthony, Gail S. Olson
2005, The Condor (107) 863-878
We used data from Northern Spotted Owl (Strix occidentalis caurina) territories to model the effects of habitat (particularly intermediate-aged forest stand types), climate, and nonhabitat covariates (i.e., age, sex) on owl reproductive rate and apparent survival in southwestern Oregon. Our best model for reproductive rate included an interaction between a...
Petrology, mineralogy and geochemistry of mined coals, western Venezuela
Paul C. Hackley, Peter D. Warwick, Eligio Gonzalez
2005, International Journal of Coal Geology (63) 68-97
Upper Paleocene to middle Miocene coal samples collected from active mines in the western Venezuelan States of Táchira, Mérida and Zulia have been characterized through an integrated geochemical, mineralogical and petrographic investigation. Proximate, ultimate, calorific and forms of sulfur values, major and trace element, vitrinite reflectance, maceral concentrations and mineral...
Modeling of site occupancy dynamics for northern spotted owls, with emphasis on the effects of barred owls
Gail S. Olson, Robert G. Anthony, Eric D. Forsman, Steven H. Ackers, Peter J. Loschl, Janice A. Reid, Katie M. Dugger, Elizabeth M. Glenn, William J. Ripple
2005, Journal of Wildlife Management (69) 918-932
Northern spotted owls (Strix occidentalis caurina) have been studied intensively since their listing as a threatened species by the U.S. Fish and Wildlife Service in 1990. Studies of spotted owl site occupancy have used various binary response measures, but most of these studies have made the assumption that detectability is...
Evaluation of models and data for assessing whooping crane habitat in the central Platte River, Nebraska
Adrian H. Farmer, Brian S. Cade, James W. Terrell, Jim H. Henriksen, Jeffery T. Runge
2005, Scientific Investigations Report 2005-5123
The primary objectives of this evaluation were to improve the performance of the Whooping Crane Habitat Suitability model (C4R) used by the U.S. Fish and Wildlife Service (Service) for defining the relationship between river discharge and habitat availability, and to assist the Service in implementing improved model(s) with existing hydraulic...
Grass buffers for playas in agricultural landscapes: A literature synthesis
Cynthia P. Melcher, Susan K. Skagen
2005, Open-File Report 2005-1220
We summarize current knowledge about grass buffers for protecting small, isolated wetlands in agricultural contexts, including information relevant to protecting playas from runoff containing sediments, nutrients, pesticides, and other contaminants, and information on how buffers may affect densities and productivity of grassland birds. Land-uses surrounding the approximately 60,000 playas within...
Grass buffers for playas in agricultural landscapes: An annotated bibliography
Cynthia P. Melcher, Susan K. Skagen
2005, Open-File Report 2005-1221
This bibliography and associated literature synthesis (Melcher and Skagen, 2005) was developed for the Playa Lakes Joint Venture (PLJV). The PLJV sought compilation and annotation of the literature on grass buffers for protecting playas from runoff containing sediments, nutrients, pesticides, and other contaminants. In addition, PLJV sought information regarding the...
Analyzing stakeholder preferences for managing elk and bison at the National Elk Refuge and Grand Teton National Park: An example of the disparate stakeholder management approach
Lynne Koontz, Dana L. Hoag
2005, Open-File Report 2005-1224
The U.S. Fish and Wildlife Service (FWS) and the National Park Service (NPS) are preparing a management plan for bison and elk inhabiting the National Elk Refuge (NER) and Grand Teton National Park (GTNP) near Jackson Hole, Wyoming. A management plan is needed to evaluate current and possible changes to...
A surficial hydrogeologic framework for the Mid-Atlantic Coastal Plain
Scott W. Ator, Judith M. Denver, David E. Krantz, Wayne L. Newell, Sarah K. Martucci
2005, Professional Paper 1680
A surficial hydrogeologic framework was developed for the Mid-Atlantic Coastal Plain, from New Jersey through North Carolina. The framework includes seven distinct hydrogeologic subregions within which the primary natural physical factors affecting the flow and chemistry of shallow ground water and small streams are relatively consistent. Within most subregions, the...
Advancing migratory bird conservation and management by using radar: An interagency collaboration
Janet M. Ruth, Wylie C. Barrow, Richard S. Sojda, Deanna K. Dawson, Robert H. Diehl, Albert Manville, Michael T. Green, David J. Krueper, Scott Johnston
2005, Open-File Report 2005-1173
Migratory birds face many changes to the landscapes they traverse and the habitats they use. Wind turbines and communications towers, which pose hazards to birds and bats in flight, are being erected or proposed across the United States and offshore. Human activities can also destroy or threaten habitats critical to...
Gulf of Mexico Integrated Science - Tampa Bay Study: Examining the Impact of Urbanization on Seafloor Habitats
Kimberly Yates
2005, Open-File Report 2005-1017
Seafloor habitats, such as seagrass beds, provide essential habitat for fish and marine mammals. For many years, the study of seagrass vitality has been a priority for scientists and resource managers working in Tampa Bay. Seafloor habitats are extremely sensitive to changes in water quality. Like a canary in a...
User manual for Blossom statistical package for R
Marian Talbert, Brian S. Cade
2005, Open-File Report 2005-1353
Blossom is an R package with functions for making statistical comparisons with distance-function based permutation tests developed by P.W. Mielke, Jr. and colleagues at Colorado State University (Mielke and Berry, 2001) and for testing parameters estimated in linear models with permutation procedures developed by B. S. Cade and colleagues at...
Hazard calculations for the WGCEP-2002 earthquake forecast using OpenSHA and distributed object technologies
Edward H. Field, N. Gupta, Vipin Gupta, Michael L. Blanpied, Phillip J. Maechling, Thomas H. Jordan
2005, Seismological Research Letters (76) 161-167
We present seismic-hazard calculations for what is arguably the most sophisticated earthquake forecast ever developed—the model by the 2002 Working Group on California Earthquake Probabilities (2003), or WGCEP-2002 as referred to hereafter. These calculations have been made possible by developments in both OpenSHA (Field et al.,...
Grid computing in the SCEC community modeling environment
P. Maechling, Vipin Gupta, N. Gupta, Edward H. Field, David Okaya, Thomas H Jordan
2005, Seismological Research Letters (76) 581-587
No abstract available....
Prey vulnerability to peacock cichlids and largemouth bass based on predator gape and prey body depth
Jeffrey E. Hill, Leo G. Nico, Charles E. Cichra, Carter R. Gilbert
2005, Proceedings of the Southeastern Association of Fish and Wildlife Agencies (58) 47-56
The interaction of prey fish body depth and predator gape size may produce prey assemblages dominated by invulnerable prey and excessive prey-to-predator biomass ratios. Peacock cichlids (Cichla ocellaris) were stocked into southeast Florida canals to consume excess prey fish biomass, particularly spotted tilapia (Tilapia mariae). The ecomorphologically similar largemouth bass...
ATLSS data viewer: A tool to analyze and display ATLSS model outputs
S. Hartley, J. Johnston
Moglen G.E., editor(s)
2005, Conference Paper, Proceedings of the 2005 Watershed Management Conference - Managing Watersheds for Human and Natural Impacts: Engineering, Ecological, and Economic Challenges
[No abstract available]...
Preliminary evaluation of a lake whitefish (Coregonus clupeaformis) bioenergetics model
Charles P. Madenjian, Steven A. Pothoven, Philip J. Schneeberger, Daniel V. O’Connor, Stephen B. Brandt
2005, Conference Paper, Proceedings of a workshop on the dynamics of lake whitefish (<i>Coregonus clupeaformis</i>) and the amphipod Diporeia spp. in the Great Lakes
We conducted a preliminary evaluation of a lake whitefish (Coregonus clupeaformis) bioenergetics model by applying the model to size-at-age data for lake whitefish from northern Lake Michigan. We then compared estimates of gross growth efficiency (GGE) from our bioenergetis model with previously published estimates of GGE for bloater (C. hoyi)...
Development of a bioenergetics model for humpback chub and evaluation of water temperature changes in the Grand Canyon, Colorado River
C. A. Haskell, K.F. Tiffan, R.C. Koch, D.W. Rondorf
2005, Report
No abstract available ...
Why is metal bioaccumulation so variable? Biodynamics as a unifying concept
Samuel N. Luoma, Philip S. Rainbow
2005, Environmental Science & Technology (39) 1921-1931
Ecological risks from metal contaminants are difficult to document because responses differ among species, threats differ among metals, and environmental influences are complex. Unifying concepts are needed to better tie together such complexities. Here we suggest that a biologically based conceptualization, the biodynamic model, provides the necessary unification for a...
Modeling tritium transport through a deep unsaturated zone in an arid environment
C.J. Mayers, Brian J. Andraski, C.A. Cooper, S.W. Wheatcraft, David A. Stonestrom, R. L. Michel
2005, Vadose Zone Journal (4) 967-976
Understanding transport of tritium (3H) in unsaturated zones is critical to evaluating options for waste isolation. Tritium typically is a large component of low-level radioactive waste (LLRW). Studies at the U.S. Geological Survey's Amargosa Desert Research Site (ADRS) in Nevada investigate 3H transport from a closed LLRW facility. Two boreholes...
A method adapting microarray technology for signature tagged mutagenesis of Dusulfovibrio dusulfuricans G20 and Shewanella oneidensis MR-1 in anaerobic sediment survival experiments
Jennifer L. Groh, Qingwei Luo, Jimmy D. Ballard, Lee R. Krumholz
2005, Applied and Environmental Microbiology (71) 7064-7074
Signature-tagged mutagenesis (STM) is a powerful technique that can be used to identify genes expressed by bacteria during exposure to conditions in their natural environments. To date, there have been no reports of studies in which this approach was used to study organisms of environmental, rather than pathogenic, significance. We...
The most recent large earthquake on the Rodgers Creek fault, San Francisco bay area
S. Hecker, D. Pantosti, David P. Schwartz, J. C. Hamilton, L.M. Reidy, T. J. Powers
2005, Bulletin of the Seismological Society of America (95) 844-860
The Rodgers Creek fault (RCF) is a principal component of the San Andreas fault system north of San Francisco. No evidence appears in the historical record of a large earthquake on the RCF, implying that the most recent earthquake (MRE) occurred before 1824, when a Franciscan mission was built near...
Contaminants as viral cofactors: assessing indirect population effects
Katherine R. Springman, Gael Kurath, James J. Anderson, John M. Emlen
2005, Aquatic Toxicology (71) 13-23
Current toxicological methods often miss contaminant effects, particularly when immune suppression is involved. The failure to recognize and evaluate indirect and sublethal effects severely limits the applicability of those methods at the population level. In this study, the Vitality model is used to evaluate the population level effects of a...
Habitat selection models for Pacific sand lance (Ammodytes hexapterus) in Prince William Sound, Alaska
William D. Ostrand, Tracey A. Gotthardt, Shay Howlin, Martin D. Robards
2005, Northwestern Naturalist (86) 131-143
We modeled habitat selection by Pacific sand lance (Ammodytes hexapterus) by examining their distribution in relation to water depth, distance to shore, bottom slope, bottom type, distance from sand bottom, and shoreline type. Through both logistic regression and classification tree models, we compared the characteristics of 29 known sand lance...
Polar climate: Arctic sea ice
R. S. Stone, David C. Douglas, G. I. Belchansky, S. D. Drobot
2005, Bulletin of the American Meteorological Society (86) S39-S41
Recent decreases in snow and sea ice cover in the high northern latitudes are among the most notable indicators of climate change. Northern Hemisphere sea ice extent for the year as a whole was the third lowest on record dating back to 1973, behind 1995 (lowest) and 1990 (second lowest;...
