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1,486 results found
Reid's paradox describes the fact that classical models cannot account for the rapid (102-103 yr-1) spread of trees at the end of the Pleistocene. I use field estimates of seed dispersal with an integrodifference equation and simulation models of population growth to show that dispersal data are…
Author(s): James S. Clark
Keywords: climate change, diffusion, dispersal, Holocene, migration, pollen data
Source: The American Naturalist, Vol. 152, No. 2 August 1998
Year: 1998
There are increasing concerns in the forestry community about global climate change and variability associated with elevated atmospheric CO2. Changes in precipitation and increases in air temperature could impose additional stress on forests during the next century. For a study site in Carteret…
Author(s): Ge Sun, Devendra M. Amatya, Steven G. McNulty, R. Wayne Skaggs, Joseph H. Hughes
Keywords: climate change, drainage, forest hydrology, loblolly Pine, modeling, PnET-II
Source: Journal of The American Water Resources Association, Vol. 36, No. 2, April 2000
Year: 2000
Impacts of global climate change on the biophysical components of wilderness areas have the potential to alter their recreational utility of wilderness areas. Concomitantly, the frequency and patterns of both land-based and water-based wilderness recreation activities will be affected. Despite the…
Author(s): Vinod Sasidharan
Keywords: wilderness, climate change, El Niño, impacts, recreation, recreation management, resource management
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. 149-152
Year: 2000
Human impacts on the Earth’s ecosystems are globally pervasive. Wilderness areas, although largely protected from direct human impact at local scales, nevertheless are subject to global changes in atmospheric composition, climate and biodiversity. Research in wilderness areas plays a critical role…
Author(s): Lisa J. Graumlich
Keywords: wilderness, global change, human impacts, ecosystems, climate change
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 3: Wilderness as a place for scientific inquiry; 1999 May 23–27; Missoula, MT. Proceedings RMRS-P-15-VOL-3. Ogden, UT: U.S. Department of Agriculture, Forest Service, Rocky Mountain Research Station. p. 27-32
Year: 2000
Wilderness areas comprise 65% of the 1.92 million acre Kenai National Wildlife Refuge, Alaska. Fire history studies indicate that fire frequency increased substantially in both white and black spruce forests after European settlement. Dendrochronolgy studies indicate that regional-scale spruce bark…
Author(s): Edward E. Berg
Keywords: wilderness, fire, fire history, fire frequency, Dendroctonus rufipennis, spruce bark beetles, climate change, development, Kenai National Wildlife Refuge, Kenai Peninsula, Alaska
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 3: Wilderness as a place for scientific inquiry; 1999 May 23-27; Missoula, MT. Proceedings RMRS-P-15-VOL-3. Ogden, UT: U.S. Department of Agriculture, Forest Service, Rocky Mountain Research Station. p. 63-67.
Year: 2000
An integrated program of ecosystem modeling and extensive field studies at Glacier and Olympic National Parks has quantified many of the ecological processes affected by climatic variability and disturbance. Models have successfully estimated snow distribution, annual watershed discharge, and…
Author(s): Daniel B. Fagre, David L. Peterson
Keywords: wilderness, mountains, ecosystem, models, climate change, ecological disturbance, Glacier National Park, Montana, Olympic National Park, Washington
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 3: Wilderness as a place for scientific inquiry; 1999 May 23–27; Missoula, MT. Proceedings RMRS-P-15-VOL-3. Ogden, UT: U.S. Department of Agriculture, Forest Service, Rocky Mountain Research Station. p. 74-81
Year: 2000
This study mapped and analyzed the alpine-treeline ecotone (ATE) boundary and alpine plant communities on the Presidential Range, New Hampshire and Mount Katahdin, Maine. These are sensitive biomonitoring parameters for plant community responses to climatic change. The ATE boundary spans a…
Author(s): Kenneth D. Kimball, Douglas M. Weihrauch
Keywords: wilderness, mountains, ecotones, alpine vegetation, topographic features, climate change, mapping, Presidential Range, New Hampshire, Mount Katahdin, Maine
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 3: Wilderness as a place for scientific inquiry; 1999 May 23–27; Missoula, MT. Proceedings RMRS-P-15-VOL-3. Ogden, UT: U.S. Department of Agriculture, Forest Service, Rocky Mountain Research Station. p. 93-101
Year: 2000
The Middle Fork Salmon River drainage of the Frank Church River-Of-No-Return Wilderness has a history of livetock grazing from 1890 to 1950, and changes in grazing pressure from native ungulates. High mule deer (Odocoileus hemionus) populations occurred between 1940 and 1960, and high elk (Cervus…
Author(s): James M. Peek
Keywords: wilderness, grazing, shrub-steppe vegetation, herbivores, climate change, Frank Church River-Of-No-Return Wilderness, Middle Fork Salmon River, Idaho
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 3: Wilderness as a place for scientific inquiry; 1999 May 23–27; Missoula, MT. Proceedings RMRS-P-15-VOL-3. Ogden, UT: U.S. Department of Agriculture, Forest Service, Rocky Mountain Research Station. p. 117-127
Year: 2000
Hiking the nearly treeless slopes of western Nevada's Wassuk Range, researcher Connie Millar found dead limber pine throughout the watersheds. Where scanty forests were present, the dead wood occurred above treeline. Investigation of these wood remnants, sculpted by the elements over hundreds of…
Author(s): Anne M. Rosenthal, Constance I. Millar
Keywords: Wassuk Range, climate change
Source: Science Perspective PSW-SP-001. Albany, CA: U.S. Department of Agriculture, Forest Service, Pacific Southwest Research Station. 6 p
Year: 2003
Recent advances in earth system sciences have revealed significant new information relevant to rare plant ecology and conservation. Analysis of climate change at high resolution with new and precise proxies of paleotemperatures reveals a picture over the past two million years of oscillatory…
Author(s): Constance I. Millar
Keywords: plant ecology and conservation, global warming, climate change
Source: Sierra Nevada Research Center USDA Forest Service, Pacific Southwest Research Station
Year: 2003
https://www.fs.usda.gov/treesearch/search/query?f%5B0%5D=publication_keywords%3Aclimate%20change