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• 1. [Article] Identification and characterization of forest communities and habitat types in and adjacent to the H. J. Andrews Experimental Forest

  A total of 23 forest communities have been identified and characterized in a preliminary manner. Data used in formulating the classification had previously been collected on 300 reconnaissance plots located ...

  Citation × Citation Citation Abstract Copy Title: Identification and characterization of forest communities and habitat types in and adjacent to the H. J. Andrews Experimental Forest Author: Zobel, Donald B., U.S. International Biological Program. Coniferous Forest Biome, Dyrness, C. T., University of Washington, Franklin, Jerry F. A total of 23 forest communities have been identified and characterized in a preliminary manner. Data used in formulating the classification had previously been collected on 300 reconnaissance plots located on the H. J. Andrews Forest and surrounding area. Vegetation classification was facilitated by similarity analysis and stand ordination procedures developed by Dr. Will Moir, formerly of Colorado State University. Results of stand ordination indicate the presence of strong moisture and temperature gradients along which forest stands array themselves. Title: Identification and characterization of forest communities and habitat types in and adjacent to the H. J. Andrews Experimental Forest Author: Zobel, Donald B., U.S. International Biological Program. Coniferous Forest Biome, Dyrness, C. T., University of Washington, Franklin, Jerry F. A total of 23 forest communities have been identified and characterized in a preliminary manner. Data used in formulating the classification had previously been collected on 300 reconnaissance plots located on the H. J. Andrews Forest and surrounding area. Vegetation classification was facilitated by similarity analysis and stand ordination procedures developed by Dr. Will Moir, formerly of Colorado State University. Results of stand ordination indicate the presence of strong moisture and temperature gradients along which forest stands array themselves. Close

• 2. [Article] Variation in air and soil temperatures in forest communities on the H. J. Andrews Experimental Forest, 1970-1972

  Best copy available.

  Citation × Citation Citation Abstract Copy Title: Variation in air and soil temperatures in forest communities on the H. J. Andrews Experimental Forest, 1970-1972 Author: Zobel, Donald B., McKee, Arthur, Hawk, Glenn M., U.S. International Biological Program. Coniferous Forest Biome, Dyrness, C. T., University of Washington Best copy available. Title: Variation in air and soil temperatures in forest communities on the H. J. Andrews Experimental Forest, 1970-1972 Author: Zobel, Donald B., McKee, Arthur, Hawk, Glenn M., U.S. International Biological Program. Coniferous Forest Biome, Dyrness, C. T., University of Washington Best copy available. Close

• 3. [Article] A preliminary classification of forest communities in the central portion of the western Cascades in Oregon

  Forest communities in the central portion of Oregon's western Cascades are arrayed along moisture and temperature gradients. With the aid of reconnaissance data and a computerized ordination technique, ...

  Citation × Citation Citation Abstract Copy Title: A preliminary classification of forest communities in the central portion of the western Cascades in Oregon Author: U.S. International Biological Program. Coniferous Forest Biome, Dyrness, C. T., Moir, William H., Franklin, Jerry F. Forest communities in the central portion of Oregon's western Cascades are arrayed along moisture and temperature gradients. With the aid of reconnaissance data and a computerized ordination technique, 23 forest communities have been provisionally recognized in two distinct forest zones, the Tsuga heterophylla (300 to 1050 m in elevation) and the Abies amabilis (1050 to 1550 m). The location of these zones is largely a function of temperature (elevation), while distribution of individual communities within a zone is controlled mainly by moisture availability. Eleven climax or near-climax associations and three seral communities were recognized within the Tsuga heterophylla zone. Associations range from the Pseudotsuga/Holodiscus on very dry sites to the Tsuga/Polystichum-Oxalis on wet sites. In the Abies amabilis zone, nine units were identified--seven climax or near-climax associations and two seral communities. Driest habitats in the zone are occupied by the Abies--Tsuga mertensiana/ Xerophyllum association and wettest sites support the Chamaeeyparis/Oplopanax association. Characteristics of all 23 forest communities are described and relationships among them are discussed. Title: A preliminary classification of forest communities in the central portion of the western Cascades in Oregon Author: U.S. International Biological Program. Coniferous Forest Biome, Dyrness, C. T., Moir, William H., Franklin, Jerry F. Forest communities in the central portion of Oregon's western Cascades are arrayed along moisture and temperature gradients. With the aid of reconnaissance data and a computerized ordination technique, 23 forest communities have been provisionally recognized in two distinct forest zones, the Tsuga heterophylla (300 to 1050 m in elevation) and the Abies amabilis (1050 to 1550 m). The location of these zones is largely a function of temperature (elevation), while distribution of individual communities within a zone is controlled mainly by moisture availability. Eleven climax or near-climax associations and three seral communities were recognized within the Tsuga heterophylla zone. Associations range from the Pseudotsuga/Holodiscus on very dry sites to the Tsuga/Polystichum-Oxalis on wet sites. In the Abies amabilis zone, nine units were identified--seven climax or near-climax associations and two seral communities. Driest habitats in the zone are occupied by the Abies--Tsuga mertensiana/ Xerophyllum association and wettest sites support the Chamaeeyparis/Oplopanax association. Characteristics of all 23 forest communities are described and relationships among them are discussed. Close

• 4. [Article] Annual report on site characterization

  Citation × Citation Citation Abstract Copy Title: Annual report on site characterization Author: U.S. International Biological Program. Coniferous Forest Biome, Dyrness, C. T., University of Washington Title: Annual report on site characterization Author: U.S. International Biological Program. Coniferous Forest Biome, Dyrness, C. T., University of Washington Close

• 5. [Article] Vegetation and soils of the Hi-15 watersheds, H. J. Andrews Experimental Forest

  Early in the planning of the Coniferous Biome research program, it was recognized that Experimental Watersheds 6, 7, and 8 in the H. J. Andrews Experimental Forest might provide ideal study sites for certain ...

  Citation × Citation Citation Abstract Copy Title: Vegetation and soils of the Hi-15 watersheds, H. J. Andrews Experimental Forest Author: Hawk, Glenn M., U.S. International Biological Program. Coniferous Forest Biome, Dyrness, C. T., University of Washington Early in the planning of the Coniferous Biome research program, it was recognized that Experimental Watersheds 6, 7, and 8 in the H. J. Andrews Experimental Forest might provide ideal study sites for certain phases of the Biome program. A study was funded during year 1 (1970) to provide necessary background ecological information about these watersheds, which then would be available before intensive studies were undertaken. This report contains a summary of the information obtained as a result of an inventory of vegetation and soils present on the watershed. It contains the vegetation mapping legend, vegetation maps, descriptions of mapped vegetation units, a generalized soil map, and a brief description of soils present. In addition to the small maps included with this report, large-scale vegetation maps (scale 1 in. = 2 chains: 1 chain = 66 feet) also are available. Title: Vegetation and soils of the Hi-15 watersheds, H. J. Andrews Experimental Forest Author: Hawk, Glenn M., U.S. International Biological Program. Coniferous Forest Biome, Dyrness, C. T., University of Washington Early in the planning of the Coniferous Biome research program, it was recognized that Experimental Watersheds 6, 7, and 8 in the H. J. Andrews Experimental Forest might provide ideal study sites for certain phases of the Biome program. A study was funded during year 1 (1970) to provide necessary background ecological information about these watersheds, which then would be available before intensive studies were undertaken. This report contains a summary of the information obtained as a result of an inventory of vegetation and soils present on the watershed. It contains the vegetation mapping legend, vegetation maps, descriptions of mapped vegetation units, a generalized soil map, and a brief description of soils present. In addition to the small maps included with this report, large-scale vegetation maps (scale 1 in. = 2 chains: 1 chain = 66 feet) also are available. Close

• 6. [Article] Vegetation and soils of watersheds 2 and 3, H. J. Andrews Experimental Forest

  Early in the planning of the Coniferous Biome program It was recognized that experimental watersheds 2 and 3 in the H. J. Andrews Experimental Forest might provide ideal study sites for certain phases ...

  Citation × Citation Citation Abstract Copy Title: Vegetation and soils of watersheds 2 and 3, H. J. Andrews Experimental Forest Author: Hawk, Glenn M., U.S. International Biological Program. Coniferous Forest Biome, Dyrness, C. T., University of Washington Early in the planning of the Coniferous Biome program It was recognized that experimental watersheds 2 and 3 in the H. J. Andrews Experimental Forest might provide ideal study sites for certain phases of the Biome program. A study was funded during year 1 (1970) to provide necessary background ecological information about these watersheds, which would then be available before intensive studies were undertaken. This report contains a summary of the Information obtained as a result of an inventory of vegetation and soils present on the watersheds. It contains the vegetation mapping legend, vegetation maps, descriptions of mapped vegetation units, detailed soil maps, and a brief description of soils present. In addition to small maps included with this report, large-scale vegetation maps (scale 2 inches or 5 centimeters equals 100 meters) are also available. Title: Vegetation and soils of watersheds 2 and 3, H. J. Andrews Experimental Forest Author: Hawk, Glenn M., U.S. International Biological Program. Coniferous Forest Biome, Dyrness, C. T., University of Washington Early in the planning of the Coniferous Biome program It was recognized that experimental watersheds 2 and 3 in the H. J. Andrews Experimental Forest might provide ideal study sites for certain phases of the Biome program. A study was funded during year 1 (1970) to provide necessary background ecological information about these watersheds, which would then be available before intensive studies were undertaken. This report contains a summary of the Information obtained as a result of an inventory of vegetation and soils present on the watersheds. It contains the vegetation mapping legend, vegetation maps, descriptions of mapped vegetation units, detailed soil maps, and a brief description of soils present. In addition to small maps included with this report, large-scale vegetation maps (scale 2 inches or 5 centimeters equals 100 meters) are also available. Close

• 7. [Article] A conceptual model of soil mass movement, surface soil erosion, and stream channel erosion processes

  The conceptual framework of an erosion model has been designed to link processes of mass wasting, surface erosion, and channel storage and transport. A program to stimulate mass wasting will be based on ...

  Citation × Citation Citation Abstract Copy Title: A conceptual model of soil mass movement, surface soil erosion, and stream channel erosion processes Author: Fredriksen, R. L., U.S. International Biological Program. Coniferous Forest Biome, Moore, Duane G., Swanston, Douglas N., Dyrness, C. T., University of Washington, Glenn, Leslie Fred, 1944-, Swanson, Frederick J. (Frederick John), 1943-, Cromack, Kermit The conceptual framework of an erosion model has been designed to link processes of mass wasting, surface erosion, and channel storage and transport. A program to stimulate mass wasting will be based on a variation of the factor of safety approach which balances forces tending to drive mass movement against those resisting it. Surface erosion will be treated by using a form of the universal soil loss equation adapted to account for dry ravel processes as well as precipitation generated surface erosion. These processes move material eroded from hillslope landscape areas into the stream channel. Channel erosion may occur either as bedload and suspension load transport or in episodic debris torrents, triggered by debris dam failure or by mass movement from a hillslope. The model will be driven primarily by hydrologic processes and will also receive key inputs from vegetation components of the general ecosystem model. Model development will aim at producing a computer model which will have sufficient realism and predictive capability to be useful to land managers. Title: A conceptual model of soil mass movement, surface soil erosion, and stream channel erosion processes Author: Fredriksen, R. L., U.S. International Biological Program. Coniferous Forest Biome, Moore, Duane G., Swanston, Douglas N., Dyrness, C. T., University of Washington, Glenn, Leslie Fred, 1944-, Swanson, Frederick J. (Frederick John), 1943-, Cromack, Kermit The conceptual framework of an erosion model has been designed to link processes of mass wasting, surface erosion, and channel storage and transport. A program to stimulate mass wasting will be based on a variation of the factor of safety approach which balances forces tending to drive mass movement against those resisting it. Surface erosion will be treated by using a form of the universal soil loss equation adapted to account for dry ravel processes as well as precipitation generated surface erosion. These processes move material eroded from hillslope landscape areas into the stream channel. Channel erosion may occur either as bedload and suspension load transport or in episodic debris torrents, triggered by debris dam failure or by mass movement from a hillslope. The model will be driven primarily by hydrologic processes and will also receive key inputs from vegetation components of the general ecosystem model. Model development will aim at producing a computer model which will have sufficient realism and predictive capability to be useful to land managers. Close