Publications
Below is a list of available NOROCK peer reviewed and published science. If you are in search of a specific publication and cannot find it below or through a search, please contact twojtowicz@usgs.gov.
Filter Total Items: 1357
Wildfire effects on water temperature and selection of breeding sites by the Boreal Toad (Bufo boreas) in seasonal wetlands Wildfire effects on water temperature and selection of breeding sites by the Boreal Toad (Bufo boreas) in seasonal wetlands
Disturbances can significantly affect the thermal regime and community structure of wetlands. We investigated the effect of a wildfire on water temperature of seasonal, montane wetlands after documenting the colonization of recently burned wetlands by the Boreal Toad (Bufo boreas boreas). We compared the daily mean temperature, daily maximum temperature, and accumulated growing degree...
Authors
B. R. Hossack, P.S. Corn
Post-breeding habitat use by adult Boreal Toads (Bufo boreas) after wildfire in Glacier National Park, USA Post-breeding habitat use by adult Boreal Toads (Bufo boreas) after wildfire in Glacier National Park, USA
Effects of wildfire on amphibians are complex, and some species may benefit from the severe disturbance of stand-replacing fire. Boreal Toads (Bufo boreas boreas) in Glacier National Park, Montana, USA increased in occurrence after fires in 2001 and 2003. We used radio telemetry to track adult B. boreas in a mosaic of terrestrial habitats with different burn severities to better...
Authors
C.G. Guscio, B. R. Hossack, L.A. Eby, P.S. Corn
The ecological future of the North American bison: Conceiving long-term, large-scale conservation of a species The ecological future of the North American bison: Conceiving long-term, large-scale conservation of a species
Many wide-ranging mammal species have experienced significant declines over the last 200 years; restoring these species will require long-term, large-scale recovery efforts. We highlight 5 attributes of a recent range-wide vision-setting exercise for ecological recovery of the North American bison (Bison bison) that are broadly applicable to other species and restoration targets. The...
Authors
E.W. Sanderson, Kent Redford, Bill Weber, K. Aune, Dick Baldes, J. Berger, Dave Carter, C. Curtin, James N. Derr, S.J. Dobrott, Eva Fearn, Craig Fleener, Steven C. Forrest, Craig Gerlach, C. Cormack Gates, J.E. Gross, P. Gogan, Shaun M. Grassel, Jodi A. Hilty, Marv Jensen, Kyran E. Kunkel, Duane Lammers, R. List, Karen Minkowski, Tom Olson, Chris Pague, Paul B. Robertson, Bob Stephenson
Landscape-scale evaluation of genetic structure among barrier-isolated populations of coastal cutthroat trout, Oncorhynchus clarkii clarkii Landscape-scale evaluation of genetic structure among barrier-isolated populations of coastal cutthroat trout, Oncorhynchus clarkii clarkii
Relationships among landscape structure, stochastic disturbance, and genetic diversity were assessed by examining interactions between watershed-scale environmental factors and genetic diversity of coastal cutthroat trout (Oncorhynchus clarkii clarkii) in 27 barrier-isolated watersheds from western Oregon, USA. Headwater populations of coastal cutthroat trout were genetically...
Authors
T.J. Guy, R. E. Gresswell, M. A. Banks
Wildlife health initiatives in Yellowstone National Park Wildlife health initiatives in Yellowstone National Park
No abstract available.
Authors
Paul C. Cross, G. Plumb
Spatial design and strength of spatial signal: Effects on covariance estimation Spatial design and strength of spatial signal: Effects on covariance estimation
In a spatial regression context, scientists are often interested in a physical interpretation of components of the parametric covariance function. For example, spatial covariance parameter estimates in ecological settings have been interpreted to describe spatial heterogeneity or “patchiness” in a landscape that cannot be explained by measured covariates. In this article, we investigate...
Authors
Kathryn M. Irvine, Alix I. Gitelman, Jennifer A. Hoeting
Results of chemical analyses of soil, shale, and soil/shale extract from the Mancos Shale formation in the Gunnison Gorge National Conservation Area, southwestern Colorado, and at Hanksville, Utah Results of chemical analyses of soil, shale, and soil/shale extract from the Mancos Shale formation in the Gunnison Gorge National Conservation Area, southwestern Colorado, and at Hanksville, Utah
Results of chemical and some isotopic analyses of soil, shale, and water extracts collected from the surface, trenches, and pits in the Mancos Shale are presented in this report. Most data are for sites on the Gunnison Gorge National Conservation Area (GGNCA) in southwestern Colorado. For comparison, data from a few sites from the Mancos landscape near Hanksville, Utah, are included...
Authors
Michele L.W. Tuttle, Juli Fahy, Richard I. Grauch, Bridget A. Ball, Geneva W. Chong, John G. Elliott, John J. Kosovich, Keith E. Livo, Lisa L. Stillings
Evaluating shading bias in malaise and intercept traps Evaluating shading bias in malaise and intercept traps
Foresters are increasingly focusing on landscape level management regimes. At the landscape level, managed acreage may differ substantially in structure and micro-climatic conditions. Trapping is a commonly used method to evaluate changes in insect communities across landscapes. Among those trapping techniques, Malaise and window-pane traps are conveniently deployed to collect large...
Authors
Kathryn M. Irvine, Stephen A. Woods
Longitudinal patterns of fish assemblages, aquatic habitat, and water temperature in the Lower Crooked River, Oregon Longitudinal patterns of fish assemblages, aquatic habitat, and water temperature in the Lower Crooked River, Oregon
The Lower Crooked River is a remarkable groundwater-fed stream flowing through vertical basalt canyons in the Deschutes River Valley ecoregion in central Oregon (Pater and others, 1998). The 9-mile section of the river between the Crooked River National Grasslands boundary near Ogden Wayside and river mile (RM) 8 is protected under the National Wild and Scenic Rivers Act (16 U.S.C. 1271...
Authors
Christian E. Torgersen, David P. Hockman-Wert, Douglas S. Bateman, David W. Leer, Robert E. Gresswell
Mechanisms for an ∼7‐kyr climate and sea‐level oscillation during marine isotope stage 3 Mechanisms for an ∼7‐kyr climate and sea‐level oscillation during marine isotope stage 3
No abstract available.
Authors
Peter U. Clark, Steven W. Hostetler, N. G. Pisias, Andreas Schmittner, K. J. Meissner
Yellowstone grizzly bear investigations: Annual report of the Interagency Grizzly Bear Study Team, 2006 Yellowstone grizzly bear investigations: Annual report of the Interagency Grizzly Bear Study Team, 2006
The contents of this Annual Report summarize results of monitoring and research from the 2006 field season. The report also contains a summary of nuisance grizzly bear (Ursus arctos horribilis) management actions. The Interagency Grizzly Bear Study Team (IGBST) continues to work on issues associated with counts of unduplicated females with cubs-of- the-year (COY). These counts are used...