Linking process to pattern: estimating spatiotemporal dynamics of a wildlife epidemic from cross‐sectional data
Dennis M. Heisey, Erik E. Osnas, Paul C. Cross, Damien O. Joly, Julia A. Langenberg, Michael W. Miller
2010, Ecological Monographs (80) 221-240
Underlying dynamic event processes unfolding in continuous time give rise to spatiotemporal patterns that are sometimes observable at only a few discrete times. Such event processes may be modulated simultaneously over several spatial (e.g., latitude and longitude) and temporal (e.g., age, calendar time, and cohort) dimensions. The ecological challenge is...
Evaluation of a portable automated serum chemistry analyzer for field assessment of harlequin ducks, Histrionicus histrionicus
Michael K. Stoskopf, Daniel M. Mulcahy, Daniel Esler
2010, Veterinary Medicine International (2010)
A portable analytical chemistry analyzer was used to make field assessments of wild harlequin ducks (Histrionicus histrionicus) in association with telemetry studies of winter survival in Prince William Sound, Alaska. We compared serum chemistry results obtained on-site with results from a traditional laboratory. Particular attention was paid to serum glucose...
Large-scale laboratory testing of bedload-monitoring technologies: Overview of the StreamLab06 Experiments
Jeffrey D. G. Marr, John R. Gray, Broderick E. Davis, Chris Ellis, Sara Johnson
John R. Gray, Jonathan B. Laronne, Jeffrey D. G. Marr, editor(s)
2010, Book chapter, Bedload-surrogate monitoring technologies
A 3-month-long, large-scale flume experiment involving research and testing of selected conventional and surrogate bedload-monitoring technologies was conducted in the Main Channel at the St. Anthony Falls Laboratory under the auspices of the National Center for Earth-surface Dynamics. These experiments, dubbed StreamLab06, involved 25 researchers and volunteers from academia, government,...
Evaluating propagation method performance over time with Bayesian updating: An application to incubator testing
Sarah J. Converse, J. N. Chandler, Glenn H. Olsen, C. C. Shafer
Barry K. Hartup, Richard P. Urbanek, editor(s)
2010, Book chapter, Proceedings of the Eleventh North American Crane Workshop
In captive-rearing programs, small sample sizes can limit the quality of information on performance of propagation methods. Bayesian updating can be used to increase information on method performance over time. We demonstrate an application to incubator testing at USGS Patuxent Wildlife Research Center. A new type of incubator was purchased...
Sap flux-scaled transpiration by tamarisk (Tamarix spp.) before, during and after episodic defoliation by the saltcedar leaf beetle (Diorhabda carinulata)
K. R. Hultine, P.L. Nagler, K. Morino, S.E. Bush, K.G. Burtch, P.E. Dennison, E. P. Glenn, J.R. Ehleringer
2010, Agricultural and Forest Meteorology (150) 1467-1475
The release of the saltcedar beetle (Diorhabda carinulata) has resulted in the periodic defoliation of tamarisk (Tamarix spp.) along more than 1000 river km in the upper Colorado River Basin and is expected to spread along many other river reaches throughout the upper basin, and possibly into the lower Colorado...
Migration patterns and movements of sandhill cranes wintering in central and southwestern Louisiana
Sammy L. King, Aaron R. Pierce, Kent Hersey, Nicholas Winstead
Barry K. Hartup, editor(s)
2010, Conference Paper, Proceedings of the eleventh North American crane workshop
In this study we trapped wintering sandhill cranes (Grus canadensis) in Louisiana and fitted them with satellite transmitters to determine their migration routes. Four of the 6 sandhill cranes with validated locations and a terminus point used the Central Flyway for spring migration; 2 of these 4 (the only 2...
Estimating the empirical probability of submarine landslide occurrence
Eric L. Geist, Thomas E. Parsons
David C. Mosher, Craig Shipp, Lorena Moscardelli, Jason D. Chaytor, Christopher D. P. Baxter, Homa J. Lee, Roger Urgeles, editor(s)
2010, Book chapter, Submarine mass movements and their consequences
The empirical probability for the occurrence of submarine landslides at a given location can be estimated from age dates of past landslides. In this study, tools developed to estimate earthquake probability from paleoseismic horizons are adapted to estimate submarine landslide probability. In both types of estimates, one has to account...
Comparison of XAD with other dissolved lignin isolation techniques and a compilation of analytical improvements for the analysis of lignin in aquatic settings
Robert G. M. Spencer, George R. Aiken, Rachael Y. Dyda, Kenna D. Butler, Brian A. Bergamaschi, Peter J. Hernes
2010, Organic Geochemistry (41) 445-453
This manuscript highlights numerous incremental improvements in dissolved lignin measurements over the nearly three decades since CuO oxidation of lignin phenols was first adapted for environmental samples. Intercomparison of the recovery efficiency of three common lignin phenol concentration and isolation techniques, namely XAD, C18with both CH3OH (C18M) and CH3CN (C18A)...
Unbiased survival estimates and evidence for skipped breeding opportunities in females
Erin L. Muths, Rick D. Scherer, Brad A. Lambert
2010, Methods in Ecology and Evolution (1) 123-130
1. Estimates of demographic parameters for females, in many organisms, are sparse. This is particularly worrisome as more and more species are faced with high extinction probabilities and conservation increasingly depends on actions dictated by complex predictive models that require accurate estimates of demographic parameters for each sex and species. 2. This study...
Characterizing wet slab and glide slab avalanche occurrence along the Going-to-the-Sun Road, Glacier National Park, Montana, USA
Erich H. Peitzsch, Jordy Hendrikx, Daniel B. Fagre, Blase Reardon
2010, Conference Paper, Proceedings: 2010 international snow science workshop
Wet slab and glide slab snow avalanches are dangerous and yet can be particularly difficult to predict. Both wet slab and glide slab avalanches are thought to depend upon free water moving through the snowpack but are driven by different processes. In Glacier National Park, Montana, both types of avalanches...
Columbia River Project water use plan: Mid Columbia River sturgeon incubation and rearing study (Year 1)
Michael J. Parsley
2010, Report
This report describes the results from the first year of a three-year investigation on the effects of different thermal regimes on incubation and rearing early life stages of white sturgeon. The Columbia River has been significantly altered by the construction of dams resulting in annual flows and water temperatures that...
Post-construction monitoring of a Core-Loc™ breakwater using tripod-based LiDAR
Jessica H. Podoski, Gerald W. Bawden, Sandra Bond, Thomas D. Smith, James Foster
2010, Book chapter, Coasts, marine structures and breakwaters: Adapting to change
The goal of the technology application described herein is to determine whether breakwater monitoring data collected using Tripod (or Terrestrial) Light Detection and Ranging (T-LiDAR) can give insight into processes such as how Core-Loc™ concrete armour units nest following construction, and in turn how settlement affects armour layer stability, concrete...
Design and analysis of simple choice surveys for natural resource management
John Fieberg, Louis Cornicelli, David C. Fulton, Marrett D. Grund
2010, Journal of Wildlife Management (74) 871-879
We used a simple yet powerful method for judging public support for management actions from randomized surveys. We asked respondents to rank choices (representing management regulations under consideration) according to their preference, and we then used discrete choice models to estimate probability of choosing among options (conditional on the set...
Biological community structure on patch reefs in Biscayne National Park, FL, USA
Ilsa B. Kuffner, Rikki Grober-Dunsmore, John Brock, T. Don Hickey
2010, Environmental Monitoring and Assessment (164) 513-531
Coral reef ecosystem management benefits from continual quantitative assessment of the resources being managed, plus assessment of factors that affect distribution patterns of organisms in the ecosystem. In this study, we investigate the relationships among physical, benthic, and fish variables in an effort to help explain the distribution patterns of...
A practitioner's tool for assessing glide crack activity
Jordy Hendrikx, Erich H. Peitzsch, Daniel B. Fagre
2010, Conference Paper, Proceedings, 2010 International Snow Science Workshop
Glide cracks can result in full-depth glide avalanche release. Avalanches from glide cracks are notoriously difficult to forecast, but are a reoccurring problem in a number of different avalanche forecasting programs across a range of snow climates. Despite this, there is no consensus for how to best manage, mitigate, or...
Climatic water deficit, tree species ranges, and climate change in Yosemite National Park
James A. Lutz, Jan W. Van Wagtendonk, Jerry F. Franklin
2010, Journal of Biogeography (37) 936-350
Aim (1) To calculate annual potential evapotranspiration (PET), actual evapotranspiration (AET) and climatic water deficit (Deficit) with high spatial resolution; (2) to describe distributions for 17 tree species over a 2300-m elevation gradient in a 3000-km2 landscape relative to AET and Deficit; (3) to examine changes in AET and Deficit...
Effects of subsidized predators, resource variability, and human population density on desert tortoise populations in the Mojave Desert, USA
Todd C. Esque, Kenneth E. Nussear, K. Kristina Drake, Andrew D. Walde, Kristin H. Berry, Roy C. Averill-Murray, A. Peter Woodman, William I. Boarman, Phil A. Medica, Jeremy S. Mack, Jill S. Heaton
2010, Endangered Species Research (12) 167-177
Understanding predator–prey relationships can be pivotal in the conservation of species. For 2 decades, desert tortoise Gopherus agassizii populations have declined, yet quantitative evidence regarding the causes of declines is scarce. In 2005, Ft. Irwin National Training Center, California, USA, implemented a translocation project including 2 yr of baseline monitoring...
A likelihood framework for joint estimation of salmon abundance and migratory timing using telemetric mark-recapture
Jeffrey F. Bromaghin, Kenneth S. Gates, Douglas E. Palmer
2010, North American Journal of Fisheries Management (30) 1385-1394
Many fisheries for Pacific salmon Oncorhynchus spp. are actively managed to meet escapement goal objectives. In fisheries where the demand for surplus production is high, an extensive assessment program is needed to achieve the opposing objectives of allowing adequate escapement and fully exploiting the available surplus. Knowledge of abundance is a critical...
Using ecological function to develop recovery criteria for depleted species: Sea otters and kelp forests in the Aleutian archipelago
James A. Estes, M. Tim Tinker, James L. Bodkin
2010, Conservation Biology (24) 852-860
Recovery criteria for depleted species or populations normally are based on demographic measures, the goal being to maintain enough individuals over a sufficiently large area to assure a socially tolerable risk of future extinction. Such demographically based recovery criteria may be insufficient to restore the functional roles of strongly interacting...
Marine electrical resistivity imaging of submarine groundwater discharge: Sensitivity analysis and application in Waquoit Bay, Massachusetts, USA
Rory Henderson, Frederick D. Day-Lewis, Elena Abarca, Charles F. Harvey, Hanan N. Karam, Lanbo Liu, John W. Lane Jr.
2010, Hydrogeology Journal (18) 173-185
Electrical resistivity imaging has been used in coastal settings to characterize fresh submarine groundwater discharge and the position of the freshwater/salt-water interface because of the relation of bulk electrical conductivity to pore-fluid conductivity, which in turn is a function of salinity. Interpretation of tomograms for hydrologic processes is complicated by...
Colony attendance patterns by mated Forster's Terns Sterna forsteri using an automated data-logging receiver system
Jill D. Bluso-Demers, Joshua T. Ackerman, John Y. Takekawa
2010, Ardea (98) 59-65
In order to examine 24-hour colony attendance patterns by mated Forster's Terns Sterna forsteri in South San Francisco Bay, California, during incubation and chick-rearing stages, we radio-marked 10 individuals consisting of five pairs and recorded colony attendance using an automated data-logging receiver system. We calculated and analyzed five variables: the total attendance...
Composition, distribution, and potential toxicity of organochlorine mixtures in bed sediments of streams
Patrick J. Phillips, Lisa H. Nowell, Robert J. Gilliom, Naomi Nakagaki, Karen Riva-Murray, Carolyn VanAlstyne
2010, Science of the Total Environment (408) 594-606
Mixtures of organochlorine compounds have the potential for additive or interactive toxicity to organisms exposed in the stream. This study uses a variety of methods to identify mixtures and a modified concentration-addition approach to estimate their potential toxicity at 845 stream sites across the United States sampled between 1992 and...
The age of the Steens reversal and the Columbia River Basalt Group
Nicholas A. Jarboe, Robert S. Coe, Paul R. Renne, Jonathan M. G. Glen
2010, Chemical Geology (274) 158-168
The Columbia River Basalt Group (CRBG) eruptions have a well-defined relative magnetostratigraphy but have not been definitively correlated to the geomagnetic polarity time scale. 40Ar/39Ar ages are presented from lavas erupted in the R0 through N1magnetozones of the CRBG and in the transition between R0 and N0. Four ages from transitionally magnetized lava flows at Steens Mountain,...
Geophysical framework of the northern San Francisco Bay region, California
Victoria E. Langenheim, Russell W. Graymer, Robert C. Jachens, Robert J. McLaughlin, D.L. Wagner, Donald S. Sweetkind
2010, Geosphere (6) 594-620
We use geophysical data to examine the structural framework of the northern San Francisco Bay region, an area that hosts the northward continuation of the East Bay fault system. Although this fault system has accommodated ∼175 km of right-lateral offset since 12 Ma, how this offset is partitioned north of...
High resolution near-bed observations in winter near Cape Hatteras, North Carolina
Marinna A. Martini, Brandy N. Armstrong, John C. Warner
2010, Conference Paper, OCEANS 2009, MTS/IEEE Biloxi - Marine Technology for Our Future: Global and Local Challenges
The U.S. Geological Survey (USGS) Coastal and Marine Science Center in Woods Hole, Massachusetts, is leading an effort to understand the regional sediment dynamics along the coastline of North and South Carolina. As part of the Carolinas Coastal Change Processes Project, a geologic framework study in June of 2008 by...
