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19 results found
Abstract - The additional strength provided by roots to the soil is generally considered to be in the form of a cohesive strength C which may range in magnitude from 1 kPa to 20 kPa. Studies of the tensile strength of tree roots show that small roots sampled from living trees range in mean tensile…
Author(s): C. O'Loughlin, R. R. Ziemer
Keywords: PSW4351, root strength, tree roots, slope stability, landslides, soil stability, forest vegetation, erosion
Source: Proceedings of I.U.F.R.O. Workshop P.1.07-00 Ecology of Subalpine Ecosystems as a Key to Management. 2-3 August 1982, Corvallis, Oregon. Oregon State University, Corvallis, Oregon. p. 70-78.
Year: 1982
Interdisciplinary research efforts to integrate the ecological aspects of water with its physical and societal roles have a long history as well as some interesting new developments. Small, paired, experimental watersheds, with their long-term monitoring systems for data collection and their…
Author(s): D.A. Post, G. E. Grant, J. A. Jones
Keywords: PSW4351, Caspar Creek, watershed, ecological hydrology, precipitation, forest vegetation, streamflow, landscape
Source: EOS, Transactions, American Geophysical Union 79(43): 517; 526.
Year: 1998
Global Positioning System (GPS) telemetry enables biologists to obtain accurate and systematic locations of animals. Vegetation can block signals from satellites to GPS radio collars. Therefore, a vegetation dependent bias to telemetry data may occur which if quantified, could be accounted for. We…
Author(s): R. Scott Gamo, Mark A. Rumble, Fred Lindzey, Matt Stefanich
Keywords: Global Positioning System (GPS), telemetry, forest vegetation, Black Hills National Forest
Source: Biotelemetry 15: proceedings of the 15th international symposium on biotelemetry, Juneau, Alaska, USA, May 9-14, 1999. Wageningen, The Netherlands: International Society on Biotelemetry, 2000.
Year: 2000
A land-classification system based upon potential natural vegetation is presented for the forests of central Idaho. It is based on reconnaissance sampling of about 980 stands. A hierarchical taxonomic classification of forest sites was developed using the habitat type concept. A total of six climax…
Author(s): Robert Steele, Stephen V. Cooper, David M. Ondov, David W. Roberts, Robert D. Pfister
Keywords: forest vegetation, Idaho, habitat types, plant communities, forest ecology, forest management, classification, Wyoming
Source: Gen. Tech. Rep. INT-144. Ogden, UT: U.S. Department of Agriculture, Forest Service, Intermountain Forest and Range Experiment Station. 122 p.
Year: 1983
A land-classification system based upon potential natural vegetation is presented for the coniferous forests of central and southern Utah. It is based on reconnaissance sampling of about 720 stands. A hierarchical taxonomic classification of forest sites was developed using the habitat type concept…
Author(s): Andrew P. Youngblood, Ronald L. Mauk
Keywords: forest vegetation, Utah, habitat types, plant communities, forest ecology, forest management, classification
Source: General Technical Report INT-187. Ogden, UT: U.S. Department of Agriculture, Forest Service, Intermountain Research Station. 89 p.
Year: 1985
Modelled changes in climate water deficit between past, present and future climate scenarios suggest that recent past changes in forest structure and composition may accelerate in the future, with species responding individualistically to further declines in water availability. Declining water…
Author(s): James A. Lutz, Jan W. van Wagtendonk, Jerry F. Franklin
Keywords: California, climate change, forest vegetation, Little Ice Age, Pinus monticola, PRISM, Sierra Nevada, species range shifts, Thornthwaite method, Tsuga mertensiana
Source: Journal of Biogeography. 37: 936-950
Year: 2010
A land-classification system based upon potential natural vegetation is presented for the forests of Montana. It is based on an intensive 4-year study and reconnaissance sampling of about 1,500 stands. A hierarchical classification of forest sites was developed using the habitat type concept. A…
Author(s): Robert D. Pfister, Bernard L. Kovalchik, Stephen F. Arno, Richard C. Presby
Keywords: forest vegetation, Montana, habitat types, plant communities, forest ecology, forest management
Source: Gen. Tech. Rep. INT-GTR-34. Ogden, UT: U.S. Department of Agriculture, Forest Service, Intermountain Forest & Range Experiment Station. 174 p.
Year: 1977
A land-classification system based upon potential natural vegetation is presented for the forests of central Idaho. It is based on reconnaissance sampling of about 800 stands. A hierarchical taxonomic classification of forest sites was developed using the habitat type concept. A total of eight…
Author(s): Robert Steele, Robert D. Pfister, Russell A. Ryker, Jay A. Kittams
Keywords: forest vegetation, Idaho, habitat types, plant communities, forest ecology, forest management, classification
Source: Gen. Tech. Rep. INT-GTR-114. Ogden, UT: U.S. Department of Agriculture, Forest Service, Intermountain Forest and Range Experiment Station. 138 p.
Year: 1981
Plant communities are the foundation for terrestrial trophic webs and animal habitat, and their structure and species composition are an integrated result of biological and physical drivers (Gates, 1993). Additionally, they have a major role in geologic, geomorphologic and soil development…
Author(s): Andrea Woodward, Karen M. Hutten, John R. Boetsch, Steven A. Acker, Regina M. Rochefort, Mignonne M. Bivin, Laurie L. Kurth
Keywords: forest vegetation, monitoring, Pacific Northwest
Source: Techniques and Methods 2-A8. Reston, VA: U.S. Department of the Interior, U.S. Geological Survey. 228 p.
Year: 2009
A vegetation classification based on concepts and methods developed by Daubenmire was used to identify 12 forest habitat types and one shrub habitat type in the Black Hills. Included were two habitat types in the Quercus macrocarpa series, seven in the Pinus ponderosa series, one in the Populus…
Author(s): George R. Hoffman, Robert R. Alexander
Keywords: forest vegetation, Black Hills National Forest, Quercus macrocarpa, Pinus ponderosa, Populus tremuloides, Picea glaucci, Cercocarpus montanus
Source: Res. Pap. RM-RP-276. Fort Collins, CO: U.S. Department of Agriculture, Forest Service, Rocky Mountain Forest and Range Experiment Station. 48 p.
Year: 1987
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