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30 results found
Wilderness is a source habitat for grizzly bear (Ursus arctos) and bull trout (Salvelinus confluentus) populations in the northern Rocky Mountains of the United States, helping sustain these indicators of ecosystem health. The spatial distribution of grizzly bear mortalities has changed since the…
Author(s): Mike Bader
Keywords: Ursus arctos, Salvelinus confluentus, wilderness, habitat, ecosystems, restoration, population viability, metapopulations, source sink relationships, Rocky Mountains
Source: In: McCool, Stephen F.; Cole, David N.; Borrie, William T.; O’Loughlin, Jennifer, comps. 2000. Wilderness science in a time of change conference—Volume 2: Wilderness within the context of larger systems; 1999 May 23–27; Missoula, MT. Proceedings RMRS-P-15-VOL-2. Ogden, UT: U.S. Department of Agriculture, Forest Service, Rocky Mountain Research Station. p. 99-110
Year: 2000
Erosion and sedimentation are natural geomorphic processes characterized by large temporal and spatial variability. Recent radionuclide studies suggest that rare episodic events, such as large wildfires, produce massive sediment yields over time scales of thousands of years, thereby causing long-…
Author(s): Walter F. Megahan, John G. King
Keywords: erosion, sedimentation, watersheds, forest management, residual effects, logging effects, erosion control, timber, harvesting, forest roads, temporal variability, wildfires, research needs, Idaho, Montana, Rocky Mountains
Source: In: Ice, George G.; Stednick, John D., eds. A century of forest and wildland watershed lessons. Bethesda, Md.: Society of American Foresters: p. 201-222
Year: 2004
We identify wetlands, riparian woodlands and shrublands, green ash woodlands, aspen forests, pinyon-juniper woodlands, and pure and mixed forests of ponderosa pine as important wildlife habitats in the US. Forest Service's Rocky Mountain Region. The relationships of vertebrate species to each of…
Author(s): Deborah M. Finch, Leonard F. Ruggiero
Keywords: wildlife habitats, biological diversity, Rocky Mountains, Great Plains
Source: Natural Areas Journal. 13(3): 191-203.
Year: 1993
This report lists 441 vascular plant taxa in 228 genera and 63 families encountered on the 9,300-ha Fraser Experimental Forest in central Colorado. Synonyms appearing in previous publications and other works pertaining to the Fraser Experimental Forest, as well as appropriate Colorado floras and…
Author(s): Steve J. Popovich, Wayne D. Shepperd, Donald W. Reichert, Michael A. Cone
Keywords: checklist, Colorado, flora, Fraser Experimental Forest, lichens, nomenclature, Rocky Mountains, taxonomy
Source: Gen. Tech. Rep. RM-233. Fort Collins, CO: U.S. Department of Agriculture, Forest Service, Rocky Mountain Forest and Range Experiment Station. 62 p.
Year: 1993
Widespread bark beetle outbreaks are currently affecting multiple conifer forest types throughout western North America, yet many ecosystem-level consequences of this disturbance are poorly understood. We quantified the effect of mountain pine beetle (Dendroctonus ponderosae) outbreak on…
Author(s): Jacob M. Griffin, Monica G. Turner, Martin Simard
Keywords: chronosequence, disturbance ecology, nitrogen mineralization, nitrification, foliar nitrogen, litter nitrogen, soils, insect outbreaks, Rocky Mountains
Source: Forest Ecology and Management. 261: 1077-1089
Year: 2011
Neotropical migrants have been affected by the loss and fragmentation of forests in the eastern United States (Askins et al. 1990). Changes in western forests and the effects of these changes on birds may be different from those in the East. While timber harvesting is widespread in the western…
Author(s): Sallie J. Hejl, Richard L. Hutto, Charles R. Preston, Deborah M. Finch
Keywords: neotropical migrants, silvicultural treatment, Rocky Mountains
Source: In: Martin, Thomas E.; Finch, Deborah M. Ecology and management of neotropical migratory birds. New York, NY: Oxford University Press. p. 220-244.
Year: 1995
We conducted a literature review of the effects of climate on the distribution and growth of quaking aspen (Populus tremuloides Michx.) in the Western United States. Based on our review, we summarize models of historical climate determinants of contemporary aspen distribution. Most…
Author(s): Toni Lyn Morelli, Susan C. Carr
Keywords: drought, forest health, global warming, Rocky Mountains, Sierra Nevada, sudden aspen decline
Source: Gen. Tech. Rep. PSW-GTR-235. Albany, CA: U.S. Department of Agriculture, Forest Service, Pacific Southwest Research Station. 31 p
Year: 2011
Conifer forests across western North America are undergoing a widespread mortality event mediated by an epidemic outbreak of bark beetles of the genus Dendroctonus and their associated bluestain fungi (Ophiostoma spp.). As of late 2009, beetles have impacted over 600,000 hectares in northern…
Author(s): Elise Pendall, Brent Ewers, Urszula Norton, Paul Brooks, W. J. Massman, Holly Barnard, David Reed, Tim Aston, John Frank
Keywords: forest mortality, bark beetles, carbon, water, nutrient cycling, Rocky Mountains
Source: FluxLetter (The Newsletter of FLUXNET). 3(1): 17-21.
Year: 2010
Recent mountain pine beetle infestations have resulted in widespread tree mortality and the accumulation of dead woody fuels across the Rocky Mountain region, creating concerns over future forest stand conditions and fire behavior. We quantified how salvage logging influenced tree regeneration and…
Author(s): B. J. Collins, C. C. Rhoades, M. A. Battaglia, R. M. Hubbard
Keywords: mountain pine beetle, salvage logging, fire behavior, Rocky Mountains, lodgepole pine
Source: Forest Ecology and Management. 284: 260-268.
Year: 2012
Bioclimatic models predict large reductions in native trout across the Rocky Mountains in the 21st century but lack details about how changes will occur. Through five case histories across the region, we explore how a changing climate has been affecting streams and the potential consequences for…
Author(s): Daniel J. Isaak, Clint C. Muhlfeld, Andrew S. Todd, Robert Al-Chokhachy, James Roberts, Jeffrey L. Kershner, Kurt D. Fausch, Steven W. Hostetler
Keywords: trout, Rocky Mountains, bioclimatic models, climate change
Source: Fisheries. 37(12): 542-556.
Year: 2012