When should Mayfield model data be discarded?
T.R. Stanley
2004, The Wilson Bulletin (116) 267-269
Much confusion exists over the proper way to handle nest-fate data collected after the fledge date when using the Mayfield method. I provide a simple numerical example showing how use of these data can bias estimates of daily survival probability, and present a likelihood function demonstrating that nest-fate data collected...
Cross scale interactions, nonlinearities, and forecasting catastrophic events
Debra P. C. Peters, Roger A. Pielke Sr., Brandon T. Bestelmeyer, Craig D. Allen, Stuart Munson-McGee, Kris M. Havstad
2004, PNAS (101) 15130-15135
Catastrophic events share characteristic nonlinear behaviors that are often generated by cross-scale interactions and feedbacks among system elements. These events result in surprises that cannot easily be predicted based on information obtained at a single scale. Progress on catastrophic events has focused on one of the following two areas: nonlinear...
Species boundaries, phylogeography, and conservation genetics of the red-legged frog (Rana aurora/draytonii) complex
H. Bradley Shaffer, Gary M. Fellers, S. Randal Voss, J. C. Oliver, Gregory B. Pauly
2004, Molecular Ecology (13) 2667-2677
The red-legged frog, Rana aurora, has been recognized as both a single, polytypic species and as two distinct species since its original description 150 years ago. It is currently recognized as one species with two geographically contiguous subspecies, aurora and draytonii; the latter is protected under the US Endangered Species Act....
Mixing physical habitat and streamflow time series analysis
R.T. Milhous
2004, Hydroécologie Appliquée (14) 69-91
Four observations from two case studies are presented: physical habitat analysis of the Virgin River in southwestern Utah and upper Animas Basin in southwestern Colorado. The Virgin River is usually considered a sand bed river. Cross-sectional measurements, made at three streamflows, show there was considerable change in the channel between...
Estimating survival probabilities of unmarked dependent young when detection is imperfect
P.M. Lukacs, V.J. Dreitz, F.L. Knopf, K.P. Burnham
2004, The Condor (106) 926-931
We present a capture–recapture modeling approach to the estimation of survival probability of dependent chicks when only the attending adult bird is marked. The model requires that the bird's nest is found prior to hatching and that the number of eggs that hatch are counted. Subsequent data are sightings of...
Nest survival estimation: A review of alternatives to the Mayfield estimator
G. Jehle, A. A. Yackel Adams, J. A. Savidge, S. K. Skagen
2004, The Condor (106) 472-484
Reliable estimates of nest survival are essential for assessing strategies for avian conservation. We review the history of modifications and alternatives for estimating nest survival, with a focus on four techniques: apparent nest success, the Mayfield estimator, the Stanley method, and program MARK. The widely used Mayfield method avoids the...
Use and interpretation of logistic regression in habitat-selection studies
Kim A. Keating, Steve Cherry
2004, Journal of Wildlife Management (68) 774-789
Logistic regression is an important tool for wildlife habitat-selection studies, but the method frequently has been misapplied due to an inadequate understanding of the logistic model, its interpretation, and the influence of sampling design. To promote better use of this method, we review its application and interpretation under 3...
Estimating the use of morphometric measurements from museum specimens for sex determination in Mountain Plovers (Charadrius montanus)
W.M. Iko, S.J. Dinsmore, F.L. Knopf
2004, Western North American Naturalist (64) 492-496
The Mountain Plover (Charadrius montanus) is a shorebird species endemic to the dry, terrestrial ecosystems of the Great Plains and southwestern United States. Breeding Bird Survey data suggest that Mountain Plover populations have declined by >60% in the last 30 years. A better understanding of the population dynamics of the...
Spatial and temporal multiyear sea ice distributions in the Arctic: A neural network analysis of SSM/I data, 1988-2001
G. I. Belchansky, David C. Douglas, I.V. Alpatsky, Nikita G. Platonov
2004, Journal of Geophysical Research (109)
Arctic multiyear sea ice concentration maps for January 1988-2001 were generated from SSM/I brightness temperatures (19H, 19V, and 37V) using modified multiple layer perceptron neural networks. Learning data for the neural networks were extracted from ice maps derived from Okean and ERS satellite imagery to capitalize on the stability of...
Multi-scale and nested-intensity sampling techniques for archaeological survey
O. Burger, L.C. Todd, P. Burnett, T.J. Stohlgren, D. Stephens
2004, Journal of Field Archaeology (29) 409-423
This paper discusses sampling techniques for archaeological survey that are directed toward evaluating the properties of surface artifact distributions. The sampling techniques we experimented with consist of a multi-scale sampling plot developed in plant ecology and the use of a nested-intensity survey design. We present results from the initial application...
Remote sensing of vegetation and land-cover change in Arctic Tundra Ecosystems
Douglas A. Stow, Allen Hope, David McGuire, David Verbyla, John A. Gamon, Fred Huemmrich, Stan Houston, Charles H. Racine, Matthew Sturm, Ken D. Tape, Larry D. Hinzman, Kenji Yoshikawa, Craig E. Tweedie, Brian Noyle, Cherie Silapaswan, David C. Douglas, Brad Griffith, Gensuo Jia, Howard E. Epstein, Donald A. Walker, Scott Daeschner, Aaron Petersen, Liming Zhou, Ranga B. Myneni
2004, Remote Sensing of Environment (89) 281-308
The objective of this paper is to review research conducted over the past decade on the application of multi-temporal remote sensing for monitoring changes of Arctic tundra lands. Emphasis is placed on results from the National Science Foundation Land–Air–Ice Interactions (LAII) program and on optical remote sensing techniques. Case...
A quantitative approach to identifying predators from nest remains
R. Michael Anthony, J.B. Grand, T.F. Fondell, B.F. Manly
2004, Journal of Field Ornithology (75) 40-48
Nesting success of Dusky Canada Geese (Branta canadensis occidentalis) has declined greatly since a major earthquake affected southern Alaska in 1964. To identify nest predators, we collected predation data at goose nests and photographs of predators at natural nests containing artificial eggs in 1997-2000. To document feeding behavior by nest...
Using satellite radiotelemetry data to delineate and manage wildlife populations
Steven C. Amstrup, T. L. McDonald, George M. Durner
2004, Wildlife Society Bulletin (32) 661-679
The greatest promise of radiotelemetry always has been a better understanding of animal movements. Telemetry has helped us know when animals are active, how active they are, how far and how fast they move, the geographic areas they occupy, and whether individuals vary in these traits. Unfortunately, the inability to...
Detecting denning polar bears with Forward-Looking Infrared (FLIR) imagery
Steven C. Amstrup, G. York, T. L. McDonald, R. Nielson, Kristin S. Simac
2004, BioScience (54) 337-344
Polar bears give birth in snow dens in midwinter and remain in dens until early spring. The survival and development of cubs is dependent on a stable environment within the maternal den. To mitigate potential disruption of polar bear denning by existing and proposed petroleum activities, we used forward-looking infrared...
Duration of the Arctic sea ice melt season: Regional and interannual variability, 1979-2001
G. I. Belchansky, David C. Douglas, Nikita G. Platonov
2004, Journal of Climate (17) 67-80
Melt onset dates, freeze onset dates, and melt season duration were estimated over Arctic sea ice, 1979–2001, using passive microwave satellite imagery and surface air temperature data. Sea ice melt duration for the entire Northern Hemisphere varied from a 104-day minimum in 1983 and 1996 to a 124-day maximum in...
Land cover mapping of North and Central America—Global Land Cover 2000
Rasim Latifovic, Zhi-Liang Zhu
2004, Remote Sensing of Environment (89) 116-127
The Land Cover Map of North and Central America for the year 2000 (GLC 2000-NCA), prepared by NRCan/CCRS and USGS/EROS Data Centre (EDC) as a regional component of the Global Land Cover 2000 project, is the subject of this paper. A new mapping approach for transforming satellite observations acquired by...
Forecasting vegetation greenness with satellite and climate data
Lei Ji, Albert J. Peters
2004, IEEE Geoscience and Remote Sensing Letters (1) 3-6
A new and unique vegetation greenness forecast (VGF) model was designed to predict future vegetation conditions to three months through the use of current and historical climate data and satellite imagery. The VGF model is implemented through a seasonality-adjusted autoregressive distributed-lag function, based on our finding that the normalized difference...
Littoral Assessment of Mine Burial Signatures (LAMBS) buried land mine/background spectral signature analyses
A.C. Kenton, D.M. Geci, K.J. Ray, C.M. Thomas, J.W. Salisbury, J.C. Mars, J.K. Crowley, N.H. Witherspoon, J.H. Holloway Jr.
J.H. Harmon R.S.Broach J.T.Holloway, editor(s)
2004, Conference Paper, Proceedings of SPIE - The International Society for Optical Engineering
The objective of the Office of Naval Research (ONR) Rapid Overt Reconnaissance (ROR) program and the Airborne Littoral Reconnaissance Technologies (ALRT) project's LAMBS effort is to determine if electro-optical spectral discriminants exist that are useful for the detection of land mines in littoral regions. Statistically significant buried mine overburden and...
Lake Powell management alternatives and values: CVM estimates of recreation benefits
A. J. Douglas, D.A. Harpman
2004, Water International (29) 375-383
This paper presents data analyses based on information gathered from a recreation survey distributed during the spring of 1997 at Lake Powell. Recreation-linked management issues are the foci of the survey and this discussion. Survey responses to contingent valuation method (CVM) queries included in the questionnaire quantify visitor recreation values....
Frequency spectral analysis of GPR data over a crude oil spill
B.L. Burton, G.R. Olhoeft, M.H. Powers
Slob E.Yarovoy A.Rhebergen J.B., editor(s)
2004, Conference Paper, Proceedings of the Tenth International Conference Ground Penetrating Radar, GPR 2004
A multi-offset ground penetrating radar (GPR) dataset was acquired by the U.S. Geological Survey (USGS) at a crude oil spill site near Bemidji, Minnesota, USA. The dataset consists of two, parallel profiles, each with 17 transmitter-receiver offsets ranging from 0.60 to 5.15m. One profile was acquired over a known oil...
Hydrologic processes in deep vadose zones in interdrainage arid environments
Michelle Ann Walvoord, Bridget R. Scanlon
James F. Hogan, Fred M. Phillips, Bridget R. Scanlon, editor(s)
2004, Book chapter, Groundwater recharge in a desert environment: The southwestern United States (Water Science and Application, no. 9)
A unifying theory for the hydrology of desert vadose zones is particularly timely considering the rising population and water stresses in arid and semiarid regions. Conventional models cannot reconcile the apparent discrepancy between upward flow indicated by hydraulic gradient data and downward flow suggested by environmental tracer data in deep...
The National Geochemical Survey: Database and documentation
Water Resources Division, U.S. Geological Survey
2004, Open-File Report 2004-1001
The USGS, in collaboration with other federal and state government agencies, industry, and academia, is conducting the National Geochemical Survey (NGS) to produce a body of geochemical data for the United States based primarily on stream sediments, analyzed using a consistent set of methods. These data will compose a...
Water-quality characteristics and trends for selected sites in or near the Earth Resources Observation Systems (EROS) Data Center, South Dakota, 1973-2000
Kathleen M. Neitzert
2004, Water-Resources Investigations Report 2003-4280
This report presents data on water-quality samples that were collected in and near the Earth Resources Observation Systems (EROS) Data Center from 1973 through 2000. The investigation is a collaborated effort between the U.S. Geological Survey, Water Resources Discipline (WRD), and Geography (formerly National Mapping) Discipline, EROS Data Center. A water-quality...
Invertebrate Paleontology of the Wilson Grove Formation (Late Miocene to Late Pliocene), Sonoma and Marin Counties, California, with some Observations on Its Stratigraphy, Thickness, and Structure
Charles L. Powell II, James R. Allen, Peter J. Holland
2004, Open-File Report 2004-1017
The Wilson Grove Formation is exposed from Petaluma north to northern Santa Rosa, and from Bennett Valley west to Bodega Bay. A fauna of at least 107 invertebrate taxa consisting of two brachiopods, 95 mollusks (48 bivalves and 46 gastropods), at least eight arthropods, and at least two echinoids have...
Economic analysis of alternative bison and elk management practices on the National Elk Refuge and Grand Teton National Park: A comparison of visitor and household responses
John B. Loomis, Lynne Caughlan
2004, Open-File Report 2004-1305
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). These animals are part of the bison and elk herds in Jackson Hole, one of the...
