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
Modeling the invasion and spread of contagious disease in heterogeneous populations Modeling the invasion and spread of contagious disease in heterogeneous populations
No abstract available.
Authors
W.M. Getz, James O. Lloyd-Smith, Paul C. Cross, S. Bar-David, P.L.F. Johnson, T.C. Porco, M.S. Sanchez
Coping with climate change Coping with climate change
What have we learned so far about how climate change is affecting our global environment? Studies show that it adversely affects human and natural systems by • reducing biodiversity • altering hydrological systems • impairing biological and chemical cycles • making it more difficult to restore degraded ecosystems Climate is not the only factor in the deterioration of natural systems.We...
Authors
Tony Prato, Daniel B. Fagre
Natural glide slab avalanches, Glacier National Park, USA: A unique hazard and forecasting challenge Natural glide slab avalanches, Glacier National Park, USA: A unique hazard and forecasting challenge
In a museum of avalanche phenomena, glide cracks and glide avalanches might be housed in the “strange but true” section. These oddities are uncommon in most snow climates and tend to be isolated to specific terrain features such as bedrock slabs. Many glide cracks never result in avalanches, and when they do, the wide range of time between crack formation and slab failure makes them...
Authors
Blase Reardon, Daniel B. Fagre, Mark Dundas, Chris Lundy
Measurements of bed load transport on Pacific Creek, Buffalo Fork and The Snake River in Grand Teton National Park, Wyoming Measurements of bed load transport on Pacific Creek, Buffalo Fork and The Snake River in Grand Teton National Park, Wyoming
Dams disrupt the flow of both of water and sediment through a watershed. Channel morphology is a function of discharge and sediment load, and perturbations caused by dams often alter channel form, causing significant geomorphic and, potentially, ecological changes (e.g. Petts and Gurnell, 2005). At the first order, dams often produce a flow regime that is profoundly altered in the timing
Authors
Susannah O. Erwin, J. C. Schmidt
Identifying suitable sites for Florida panther reintroduction Identifying suitable sites for Florida panther reintroduction
A major objective of the 1995 Florida Panther (Puma concolor cory) Recovery Plan is the establishment of 2 additional panther populations within the historic range. Our goal was to identify prospective sites for Florida panther reintroduction within the historic range based on quantitative landscape assessments. First, we delineated 86 panther home ranges using telemetry data collected...
Authors
Cindy A. Thatcher, Frank T. van Manen, Joseph D. Clark
Habitat-based adaptive management at Mount Haggin Wildlife Management Area Habitat-based adaptive management at Mount Haggin Wildlife Management Area
The 22,743-hectare Mount Haggin Wildlife Management Area was purchased in 1976, in part for moose (Alces alces) winter range. Observed moose populations climbed from a low of 7 in 1976 to a high of 56 in 2000. A 4-step management program was initiated in 2000 consisting of definition of management objective, monitoring to determine if the objective was attained, developing a management...
Authors
R.B. Keigley, C.W. Fager
Divergent patterns of abundance and age-class structure of headwater stream tadpoles in burned and unburned watersheds Divergent patterns of abundance and age-class structure of headwater stream tadpoles in burned and unburned watersheds
Wildfire is a potential threat to many species with narrow environmental tolerances like the Rocky Mountain tailed frog (Ascaphus montanus Mittleman and Myers, 1949), which inhabits a region where the frequency and intensity of wildfires are expected to increase. We compared pre- and post-fire counts of tadpoles in eight streams in northwestern Montana to determine the effects of...
Authors
B. R. Hossack, P.S. Corn, D.B. Fagre
Remote sensing sensitivity to fire severity and fire recovery Remote sensing sensitivity to fire severity and fire recovery
The paper examines fundamental ways that geospatial data on fire severity and recovery are influenced by conditions of the remote sensing. Remote sensing sensitivities are spatial, temporal and radiometric in origin. Those discussed include spatial resolution, the sampling time of year, and time since fire. For standard reference, sensitivities are demonstrated with examples drawn from...
Authors
C.H. Key
Global-scale environmental changes in mountain protected areas: The CLIMET project Global-scale environmental changes in mountain protected areas: The CLIMET project
No abstract available.
Authors
Daniel B. Fagre, D. L. Peterson
Forestry practices and aquatic biodiversity: Fish Forestry practices and aquatic biodiversity: Fish
In the Pacific Northwest, fish communities are found in a diverse array of aquatic habitats ranging from the large coastal rivers of the temperate rainforests, to the fragmented and sometimes ephemeral streams of the xeric interior basins, and high-elevation streams and lakes in the mountainous areas (Rieman et al. 2003). Only high-elevation lakes and streams isolated above barriers to...
Authors
Robert E. Gresswell
Yellowstone grizzly bear investigations: Annual report of the Interagency Grizzly Bear Study Team, 2004 Yellowstone grizzly bear investigations: Annual report of the Interagency Grizzly Bear Study Team, 2004
The contents of this Annual Report summarize results of monitoring and research from the 2004 field season. The report also contains a summary of nuisance grizzly bear (Ursus arctos horribilis) management actions. The study team continues to work on issues associated with counts of unduplicated females with cubs-of-the-year (COY). These counts are used to establish a minimum population...