Skip to main content
U.S. flag

An official website of the United States government

79 results found
Three microscopic characters were evaluated for the identification of Pinus contorta and Pinus ponderosa. The tangential diameter of the resin canals, including the epithelium, was compared to the tangential diameter of the entire resin canal complex. The latter measurement was shown to give…
Author(s): Alex C. Wiedenhoeft, Regis B. Miller, Terra J. Theim
Keywords: Resin canal, wood anatomy, wood identification, Pinus contorta, Pinus ponderosa
Source: IAWA journal. Vol. 24, no. 3 (2003): Pages 257-267
Year: 2003
CCA-treated southern yellow pine (SYP) chips were remediated utilizing acid extraction alone, and using acid extraction followed by bioleaching with the metal-tolerant bacterium Bacillus licheniformis CC01. bCleanedc chips were used to make particleboard (PB) with 10 percent urea-formaldehyde (UF)…
Author(s): Carol A. Clausen, S. Nami Kartal, James Muehl
Keywords: Pinus contorta, Bacillus licheniformis, Gloeophyllum trabeum, Wood destroying fungi, Decay fungi, Particleboards, Panels, Copper chrome arsenates, Wood properties, Modulus of elasticity, Thickness, Water intake, Postia placenta
Source: Forest products journal. Vol. 51, nos. 7/8 (July/Aug. 2001).:p. 61-64.
Year: 2001
During the course of restoring and maintaining forest ecosystem health and function in the western interior of the United States, many small-diameter stems are removed from densely stocked stands. In general, these materials are considered nonusable or underutilized. Information on the properties…
Author(s): Gary C. Myers, R. James Barbour, Said M. Abubakr
Keywords: Pseudotsuga menziesii, Larix occidentalis, Pinus contorta, Chemithermomechanical pulping, Paper, Strength, Optical properties, Energy consumption, Diameter, Small diameter trees, Small
Source: 1999 proceedings : TAPPI International Environmental Conference, April 18-21, 1999, Nashville, Tennessee, Opryland Hotel. Atlanta, GA : Tappi Press, c1999.:p. 481-490 : ill
Year: 1999
Fire has been an important ecological process in eastside Cascade ecosystems for millennia. Fire regimes ranged from low severity to high severity, and historic fire return intervals ranged from less than a decade to greater than 300 years. Fire history and effects are described for grassland and…
Author(s): James K. Agee
Keywords: Forest fire, fire history, Juniperus occidentalis, Pinus ponderosa, Pseudotsuga menziesii, Abies grandis, Abies lasiocarpa, Pinus contorta
Source: Portland, OR: U.S. Department of Agriculture, Forest Service, Pacific Northwest Research Station. 52 p. (Everett, Richard L., assessment team leader; Eastside forest ecosystem health assessment; Hessburg, Paul F., science team leader and tech. ed., Volume III: assessment.)
Year: 1994
Experimental prescriptions compare agroforestry systems designed to increase financial returns from high-elevation stands in the southern Oregon Cascade Range. The prescriptions emphasize alternative approaches for joint production of North American matsutake mushrooms (also known as North American…
Author(s): James F. Weigand
Keywords: Tricholoma magnivelare, agroforestry systems, nontimber forest products, adaptive management, Abies magnifica, Tsuga mertensiana, Pinus contorta, Pinus monticola, Abies amabilis, tree pruning
Source: Gen. Tech. Rep. PNW-GTR-424. Portland, OR: U.S. Department of Agriculture, Forest Service, Pacific Northwest Research Station. 42 p
Year: 1998
Growth, winter injury, and mortality were evaluated for 12-year-old trees of 11 subarctic lodgepole pine provenances and a jack pine provenance at Fairbanks, Alaska. Provenances from northeast British Columbia grew more than 0.003 cubic meter of wood per tree annually from 9 to 12 years after…
Author(s): John N. Alden
Keywords: Lodgepole pine, Pinus contorta, jack pine, Pinus banksiana, subarctic species and provenances, hybrid/swarm, introgression, growth, survival, winter injury, Alaska
Source: Res. Pap. PNW-RP-402. Portland, OR: U.S. Department of Agriculture, Forest Service, Pacific Northwest Research Station. 24 p
Year: 1988
The growth response after 20 years from an initial spacing study established in a ponderosa pine (Pinus ponderosa Dougl. ex Laws.) and lodgepole pine (Pinus contorta Dougl. ex Loud.) plantation was measured in central Oregon. The study was designed to compare the growth rates of…
Author(s): K.W. Seidel
Keywords: Stand density, plantation spacing, growth, increment, ponderosa pine, Pinus ponderosa, lodgepole pine, Pinus contorta, central Oregon, Oregon (central)
Source: Res. Pap. PNW-RP-410. Portland, OR: U.S. Department of Agriculture, Forest Service, Pacific Northwest Research Station. 14 p
Year: 1989
We used data from 142 stands in Colorado and Wyoming, USA, to test the expectations of a model of growth dominance and stand development. Growth dominance relates the distribution of growth rates of individual trees within a stand to tree sizes. Stands with large trees that account for a greater…
Author(s): Dan Binkley, Daniel M. Kashian, Suzanne Boyden, Margot W. Kaye, John B. Bradford, Mary A. Arthur, Paula J. Fornwalt, Michael G. Ryan
Keywords: age-related decline in forest growth, stand development, competition, Pinus contorta, P. ponderosa, Picea engelmannii, Abies lasiocarpa, Populus tremuloides
Source: Forest Ecology and Management. 236: 193-201.
Year: 2006
There are two general approaches for reducing the negative impacts of mountain pine beetle, Dendroctonus ponderosae Hopkins, on forests. Direct control involves short-term tactics designed to address current infestations by manipulating mountain pine beetle populations, and includes the…
Author(s): Christopher J. Fettig, Kenneth E. Gibson, A. Steven Munson, Jose F. Negrón
Keywords: Dendroctonus ponderosae, direct control, indirect control, Pinus contorta, Pinus ponderosa, sanitation, thinning
Source: Forests. 5: 822-826
Year: 2014
The recent mountain pine beetle outbreak in North American lodgepole pine forests demonstrates the importance of insect related disturbances in changing forest structure and ecosystem processes. Phloem feeding by beetles disrupts transport of photosynthate from tree canopies and fungi introduced to…
Author(s): Robert M. Hubbard, Charles C. Rhoades, Kelly Elder, Jose Negron
Keywords: blue stain fungi, phloem, sap flow, Pinus contorta, Dendroctonus ponderosae, mountain pine beetle
Source: Forest Ecology and Management. 289: 312-317.
Year: 2013