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: 1308
An elevational gradient in snowpack chemical loading at Glacier National Park, Montana: implications for ecosystem processes An elevational gradient in snowpack chemical loading at Glacier National Park, Montana: implications for ecosystem processes
The accumulation and melting of mountain snowpacks are major drivers of ecosystem processes in the Rocky Mountains. These include the influence of snow water equivalent (SWE) timing and amount of release on soil moisture for annual tree growth, and alpine stream discharge and temperature that control aquatic biota life histories. Snowfall also brings with it atmospheric deposition...
Authors
Daniel Fagre, Kathy Tonnessen, Kristi Morris, George Ingersoll, Lisa McKeon, Karen Holzer
Current research efforts in decision support system technology as applied to trumpeter swan management Current research efforts in decision support system technology as applied to trumpeter swan management
No abstract available.
Authors
Richard S. Sojda, J.E. Cornely, L. H. Fredrickson, A.E. Howe
Application of snow models to snow removal operations on the Going-to-the-Sun Road, Glacier National Park Application of snow models to snow removal operations on the Going-to-the-Sun Road, Glacier National Park
Snow removal, and the attendant avalanche risk for road crews, is a major issue on mountain highways worldwide. The Going-to-the-Sun Road is the only road that crosses Glacier National Park, Montana. This 80-km highway ascends over 1200m along the wall of a glaciated basin and crosses the continental divide. The annual opening of the road is critical to the regional economy and there is...
Authors
Daniel B. Fagre, Frederick L. Klasner
Growth and diet of fish in Waldo Lake, Oregon Growth and diet of fish in Waldo Lake, Oregon
Waldo Lake, located in the Oregon Cascades, is considered to be one of the most dilute lakes in the world. Even with low nutrient concentrations and sparse populations of zooplankton, introduced fish in the lake are large in size and in good condition when compared to fish from other lakes. This apparent anomaly is due to the availability of benthic macroinvertebrates. Taxa found in the...
Authors
Nicola L. Swanson, W.J. Liss, Jeffrey S. Ziller, M. Wade, R. E. Gresswell
Fish stocking in protected areas: Summary of a workshop Fish stocking in protected areas: Summary of a workshop
Native and nonnative sport fish have been introduced into the majority of historically fishless lakes in wilderness, generating conflicts between managing wilderness as natural ecosystems and providing opportunities for recreation. Managers faced with controversial and difficult decisions about how to manage wilderness lakes may not always have ready access to research relevant to these...
Authors
Paul Stephen Corn, Roland A. Knapp
The phenology of space: Spatial aspects of bison density dependence in Yellowstone National Park The phenology of space: Spatial aspects of bison density dependence in Yellowstone National Park
The Yellowstone bison represent the only bison population in the United States that survived in the wild the near-extermination of the late 1800's. This paper capitalizes on a unique opportunity provided by the record of the bison population of Yellowstone National Park (YNP). This population has been intensely monitored for almost four decades. The analysis of long-term spatio-temporal...
Authors
M.L. Taper, M. Meagher, C.L. Jerde
The Upper Midwest Aerospace Consortium Environmental Information Network: Building ‘Learning Communities’ in the Northern Great Plains The Upper Midwest Aerospace Consortium Environmental Information Network: Building ‘Learning Communities’ in the Northern Great Plains
In the last two decades alone, the U.S. and large portions of the world have witnessed what can be aptly be described as an explosion of scientific information and technological innovations that has permeated almost every aspect of our lives. Given these trends, it is clear that science and the understanding of science are becoming increasingly more relevant and essential to decision...
Authors
Leigh Welling, George Seielstad, Pat McClurg, Daniel B. Fagre
Obsidian hydration dating of Quaternary events Obsidian hydration dating of Quaternary events
Abstract has not been submitted
Authors
K. L. Pierce, Irving Friedman
Effect of hibernation and reproductive status on body mass and condition of coastal brown bears Effect of hibernation and reproductive status on body mass and condition of coastal brown bears
We investigated the effect of hibernation and reproductive status on changes in body mass and composition of adult female brown bears (Ursus arctos) on the Kenai Peninsula, Alaska. This information is fundamental to understanding nutritional ecology of wild brown bear populations. Six adult females handled in the fall and following spring (paired samples) lost 73 ± 22 kg (x̄ ± SD; 32 ±...
Authors
Grant V. Hilderbrand, C. C. Schwartz, C.T. Robbins, Thomas A. Hanley
Charismatic megafauna or exotic pest? Interactions between popular perceptions of feral horses (Equus caballus) and their management and research Charismatic megafauna or exotic pest? Interactions between popular perceptions of feral horses (Equus caballus) and their management and research
No abstract available.
Authors
E.A. Beever, P. F. Brussard
Abiotic and biotic controls of spatial pattern at alpine treeline Abiotic and biotic controls of spatial pattern at alpine treeline
At alpine treeline, trees and krummholz forms affect the environment in ways that increase their growth and reproduction. We assess the way in which these positive feedbacks combine in spatial patterns to alter the environment in the neighborhood of existing plants. The research is significant because areas of alpine tundra are susceptible to encroachment by woody species as climate...
Authors
George P. Malanson, Ningchuan Xiao, K.J. Alftine, Mathew Bekker, David R. Butler, Daniel G. Brown, David M. Cairns, Daniel Fagre, Stephen J. Walsh
Elk, beaver, and the persistence of willows in national parks: comment on Singer et al. (1998). Elk, beaver, and the persistence of willows in national parks: comment on Singer et al. (1998).
Singer et al. (1998) propose that the decline in populations of beaver (Castor canadensis) in Yellowstone National Park (YNP) has caused willow to be more vulnerable to browsing by clk (Alces alces). I do not believe that their scenario correctly characterizes the relationship between elk and willow in YNP The authors developed their hypothesis based on 2 sets of observations. One was an
Authors
R.B. Keigley