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• 21. [Article] The valuation of outdoor recreation in a multiple-use forest

  The authors describe a consistent and theoretically sound methodology for evaluating nonmarket uses of forest resources, particularly those associated with recreation. The analytical methodology is applied ...

  Citation × Citation Citation Abstract Copy Title: The valuation of outdoor recreation in a multiple-use forest Author: Queirolo, Lewis E., Gibbs, Kenneth C., Oregon State University. Forest Research Laboratory, Lomnicki, Craig The authors describe a consistent and theoretically sound methodology for evaluating nonmarket uses of forest resources, particularly those associated with recreation. The analytical methodology is applied to a forest management unit. Present net worth of developed campgrounds and dispersed recreation activities on Oregon State Department of Forestry Lands in 1977 were estimated as $4.26 and $7.92 per visitor-day, respectively. Although these results are unique to the resource base analyzed, the application typifies the procedures employed, the type of data required, and the kinds of answers the technique can provide. The model can easily be adapted to different situations by changing assumptions and conditions. Title: The valuation of outdoor recreation in a multiple-use forest Author: Queirolo, Lewis E., Gibbs, Kenneth C., Oregon State University. Forest Research Laboratory, Lomnicki, Craig The authors describe a consistent and theoretically sound methodology for evaluating nonmarket uses of forest resources, particularly those associated with recreation. The analytical methodology is applied to a forest management unit. Present net worth of developed campgrounds and dispersed recreation activities on Oregon State Department of Forestry Lands in 1977 were estimated as $4.26 and $7.92 per visitor-day, respectively. Although these results are unique to the resource base analyzed, the application typifies the procedures employed, the type of data required, and the kinds of answers the technique can provide. The model can easily be adapted to different situations by changing assumptions and conditions. Close

• 22. [Article] Diameter growth equations for fourteen tree species in Southwest Oregon

  Equations are presented that predict individual-tree 5-year diameter growth, outside bark, for 14 tree species in southwest Oregon. The data used to develop the equations came from 19,245 trees sampled ...

  Citation × Citation Citation Abstract Copy Title: Diameter growth equations for fourteen tree species in Southwest Oregon Author: Larsen, David R., Oregon State University. Forest Research Laboratory, Hann, David W. Equations are presented that predict individual-tree 5-year diameter growth, outside bark, for 14 tree species in southwest Oregon. The data used to develop the equations came from 19,245 trees sampled from 391 stands in the study area. These equations express diameter growth as a function of diameter at breast height, crown ratio, site index, total stand basal area, and stand basal area in trees with diameters larger than the subject tree's diameter. The parameters of the equations were estimated by using weighted, nonlinear regression. Title: Diameter growth equations for fourteen tree species in Southwest Oregon Author: Larsen, David R., Oregon State University. Forest Research Laboratory, Hann, David W. Equations are presented that predict individual-tree 5-year diameter growth, outside bark, for 14 tree species in southwest Oregon. The data used to develop the equations came from 19,245 trees sampled from 391 stands in the study area. These equations express diameter growth as a function of diameter at breast height, crown ratio, site index, total stand basal area, and stand basal area in trees with diameters larger than the subject tree's diameter. The parameters of the equations were estimated by using weighted, nonlinear regression. Close

• 23. [Article] Equations for predicting the 5-year height growth of six conifer species in southwest Oregon

  Equations for predicting individual-tree height growth per 5-year period are presented for Douglas-fir, white fir, grand fir, ponderosa pine, sugar pine, and incense-cedar growing in the mixed-conifer ...

  Citation × Citation Citation Abstract Copy Title: Equations for predicting the 5-year height growth of six conifer species in southwest Oregon Author: Ritchie, Martin W., Oregon State University. Forest Research Laboratory, Hann, David W. Equations for predicting individual-tree height growth per 5-year period are presented for Douglas-fir, white fir, grand fir, ponderosa pine, sugar pine, and incense-cedar growing in the mixed-conifer zone of southwest Oregon. The data used to develop the equations came from 3,648 trees sampled from 391 stands in the study area. Parameters were estimated by means of nonlinear regression. The model for height growth is expressed as a function of site index, total tree height, crown ratio, and percentage of crown closure at total height of the subject tree. Title: Equations for predicting the 5-year height growth of six conifer species in southwest Oregon Author: Ritchie, Martin W., Oregon State University. Forest Research Laboratory, Hann, David W. Equations for predicting individual-tree height growth per 5-year period are presented for Douglas-fir, white fir, grand fir, ponderosa pine, sugar pine, and incense-cedar growing in the mixed-conifer zone of southwest Oregon. The data used to develop the equations came from 3,648 trees sampled from 391 stands in the study area. Parameters were estimated by means of nonlinear regression. The model for height growth is expressed as a function of site index, total tree height, crown ratio, and percentage of crown closure at total height of the subject tree. Close

• 24. [Article] Testing the vigor of coniferous planting stock

  "We describe a test procedure developed during growth room and field trials for which we processed hundreds of test lots of seedlings, mainly Douglas-fir (Pseudotsuga menziesii) and ponderosa pine (Pinus ...

  Citation × Citation Citation Abstract Copy Title: Testing the vigor of coniferous planting stock Author: Lavender, Denis P., Oregon State University. Forest Research Laboratory, Hermann, Richard K. "We describe a test procedure developed during growth room and field trials for which we processed hundreds of test lots of seedlings, mainly Douglas-fir (Pseudotsuga menziesii) and ponderosa pine (Pinus ponderosa), as well as lodgepole pine (Pinus contorta), Jeffrey pine (Pinus jeffreyi), and Sitka spruce (Picea sitchensis), noble fir (Abies procera), and western larch (Larix occidentaiis). If done properly, this simple procedure will closely estimate the physiological vigor of planting stock."--P. [1]. Title: Testing the vigor of coniferous planting stock Author: Lavender, Denis P., Oregon State University. Forest Research Laboratory, Hermann, Richard K. "We describe a test procedure developed during growth room and field trials for which we processed hundreds of test lots of seedlings, mainly Douglas-fir (Pseudotsuga menziesii) and ponderosa pine (Pinus ponderosa), as well as lodgepole pine (Pinus contorta), Jeffrey pine (Pinus jeffreyi), and Sitka spruce (Picea sitchensis), noble fir (Abies procera), and western larch (Larix occidentaiis). If done properly, this simple procedure will closely estimate the physiological vigor of planting stock."--P. [1]. Close

• 25. [Article] Production, consumption, and prices of softwood products in North America : regional time series data, 1950-1976

  The data included here were compiled for use in the 1980 Renewable Resources Planning Act Timber Assessment conducted by the U.S. Forest Service. They were used to develop structural equations and relationships ...

  Citation × Citation Citation Abstract Copy Title: Production, consumption, and prices of softwood products in North America : regional time series data, 1950-1976 Author: Haynes, Richard W., Childress, Steven, Shearer, David, Adams, Darius Mainard, 1944-, Mills, Thomas J. (Thomas John), 1946-, Oregon State University. Forest Research Laboratory The data included here were compiled for use in the 1980 Renewable Resources Planning Act Timber Assessment conducted by the U.S. Forest Service. They were used to develop structural equations and relationships comprising the 1980 Timber Assessment Market Model. These data series-covering U.S. demand, U.S. supply, and Canada-span 27 years of softwood production and consumption. Many were derived from unpublished sources, so this computation makes such data generally available to analysts for the first time. Title: Production, consumption, and prices of softwood products in North America : regional time series data, 1950-1976 Author: Haynes, Richard W., Childress, Steven, Shearer, David, Adams, Darius Mainard, 1944-, Mills, Thomas J. (Thomas John), 1946-, Oregon State University. Forest Research Laboratory The data included here were compiled for use in the 1980 Renewable Resources Planning Act Timber Assessment conducted by the U.S. Forest Service. They were used to develop structural equations and relationships comprising the 1980 Timber Assessment Market Model. These data series-covering U.S. demand, U.S. supply, and Canada-span 27 years of softwood production and consumption. Many were derived from unpublished sources, so this computation makes such data generally available to analysts for the first time. Close

• 26. [Article] Landscape Management Policy Simulator (LAMPS) : version 1.1 : user guide

  The LAndscape Management Policy Simulator (LAMPS) model, version 1.1, is a spatial simulation model developed to provide forest landscape planning simulations for the Coastal Landscape Analysis and Modeling ...

  Citation × Citation Citation Abstract Copy Title: Landscape Management Policy Simulator (LAMPS) : version 1.1 : user guide Author: Lennette, Marie, Oregon State University. Forest Research Laboratory, Bettinger, Pete, 1962- The LAndscape Management Policy Simulator (LAMPS) model, version 1.1, is a spatial simulation model developed to provide forest landscape planning simulations for the Coastal Landscape Analysis and Modeling Study (CLAMS). It is designed to help policymakers, managers, and planners think through alternative management scenarios and their potential effects on the ecological and economic resources of Oregon's Coast Range forests. LAMPS simulates changes to landscape structure over time, incorporating the management intentions of the four major landowner groups and vegetation dynamics. Socioeconomic and ecological information is used to track and allocate activities across the landscape. LAMPS projects, with relatively high resolution, forest conditions across broad areas, all ownership groups, and a planning horizon of 100 yr. This user guide provides instructions on how to use LAMPS for forest landscape simulations of alternative forest policies for the Coast Range of Oregon. Title: Landscape Management Policy Simulator (LAMPS) : version 1.1 : user guide Author: Lennette, Marie, Oregon State University. Forest Research Laboratory, Bettinger, Pete, 1962- The LAndscape Management Policy Simulator (LAMPS) model, version 1.1, is a spatial simulation model developed to provide forest landscape planning simulations for the Coastal Landscape Analysis and Modeling Study (CLAMS). It is designed to help policymakers, managers, and planners think through alternative management scenarios and their potential effects on the ecological and economic resources of Oregon's Coast Range forests. LAMPS simulates changes to landscape structure over time, incorporating the management intentions of the four major landowner groups and vegetation dynamics. Socioeconomic and ecological information is used to track and allocate activities across the landscape. LAMPS projects, with relatively high resolution, forest conditions across broad areas, all ownership groups, and a planning horizon of 100 yr. This user guide provides instructions on how to use LAMPS for forest landscape simulations of alternative forest policies for the Coast Range of Oregon. Close

• 27. [Article] Habitat use by snag-associated species : a bibliography for species occurring in Oregon and Washington

  Fifty-seven species of wildlife rely on or frequently use snags for breeding, roosting, or denning in Oregon and Washington. Several publications offer information on use of snags by wildlife, influence ...

  Citation × Citation Citation Abstract Copy Title: Habitat use by snag-associated species : a bibliography for species occurring in Oregon and Washington Author: Oregon State University. Forest Research Laboratory, Weikel, Jennifer M., Hayes, John P. (John Parker) Fifty-seven species of wildlife rely on or frequently use snags for breeding, roosting, or denning in Oregon and Washington. Several publications offer information on use of snags by wildlife, influence of management activities on snags and snag users, and approaches to managing snags to benefit wildlife. Because of the diverse information available and the variety of sources in which it is published, it can be difficult for a biologist or land manager to compile information needed to understand habitat needs of a given species. To help compile information on species in Oregon and Washington, that use snags, we developed a comprehensive bibliography of published literature on ecology of species of wildlife closely associated with snags. Here we present it in a user-friendly format. Title: Habitat use by snag-associated species : a bibliography for species occurring in Oregon and Washington Author: Oregon State University. Forest Research Laboratory, Weikel, Jennifer M., Hayes, John P. (John Parker) Fifty-seven species of wildlife rely on or frequently use snags for breeding, roosting, or denning in Oregon and Washington. Several publications offer information on use of snags by wildlife, influence of management activities on snags and snag users, and approaches to managing snags to benefit wildlife. Because of the diverse information available and the variety of sources in which it is published, it can be difficult for a biologist or land manager to compile information needed to understand habitat needs of a given species. To help compile information on species in Oregon and Washington, that use snags, we developed a comprehensive bibliography of published literature on ecology of species of wildlife closely associated with snags. Here we present it in a user-friendly format. Close

• 28. [Article] Estimating aboveground biomass of shrubs and young ponderosa and lodgepole pines in southcentral Oregon

  Regression equations for estimating the aboveground biomass (ovendry weight) of individual plants of 10 shrub and 2 pine species were developed from data collected in southcentral Oregon. All include a ...

  Citation × Citation Citation Abstract Copy Title: Estimating aboveground biomass of shrubs and young ponderosa and lodgepole pines in southcentral Oregon Author: Ross, Darrell W., Oregon State University. Forest Research Laboratory Regression equations for estimating the aboveground biomass (ovendry weight) of individual plants of 10 shrub and 2 pine species were developed from data collected in southcentral Oregon. All include a single independent variable and were generated from logarithmically transformed data. Total aboveground biomass of each shrub species is predicted from canopy breadth or volume (length x width x height). Total aboveground and bole-only biomass of ponderosa and lodgepole pines (<3.5 m tall) are predicted from stem diameter, diameter squared times height, or total height. Equations for ponderosa pine were found to be site--specific for the three sampling locations. All of the regression equations are most appropriate for predicting plant biomass in the first 8 years after severe disturbance of forest sites in southcentral Oregon. Title: Estimating aboveground biomass of shrubs and young ponderosa and lodgepole pines in southcentral Oregon Author: Ross, Darrell W., Oregon State University. Forest Research Laboratory Regression equations for estimating the aboveground biomass (ovendry weight) of individual plants of 10 shrub and 2 pine species were developed from data collected in southcentral Oregon. All include a single independent variable and were generated from logarithmically transformed data. Total aboveground biomass of each shrub species is predicted from canopy breadth or volume (length x width x height). Total aboveground and bole-only biomass of ponderosa and lodgepole pines (<3.5 m tall) are predicted from stem diameter, diameter squared times height, or total height. Equations for ponderosa pine were found to be site--specific for the three sampling locations. All of the regression equations are most appropriate for predicting plant biomass in the first 8 years after severe disturbance of forest sites in southcentral Oregon. Close

• 29. [Article] Asymptotic height-diameter equations for twenty-four tree species in western Oregon

  Equations for predicting height from diameter outside bark at breast height (DBH) were generated for 24 tree species in western Oregon. The equations were based on the asymptotic Chapman-Richards function. ...

  Citation × Citation Citation Abstract Copy Title: Asymptotic height-diameter equations for twenty-four tree species in western Oregon Author: Spies, Thomas A. (Thomas Allen), Garman, Steven L. (Steven Lee), 1955-, Acker, Steven A., Ohmann, Janet L., Oregon State University. Forest Research Laboratory Equations for predicting height from diameter outside bark at breast height (DBH) were generated for 24 tree species in western Oregon. The equations were based on the asymptotic Chapman-Richards function. Because geographic location and site productivity may influence height-diameter relationships, height-diameter measures from 8727 plots were first grouped by site class in each of seven ecoregions. Equation coefficients were derived by weighted, nonlinear least-squares regression. Although species differences in the degree of equation fit were evident, the Chapman- Richards function provided reliable predictions of height from DBH overall. These equations were developed specifically for the ZELIG.PNW forest dynamics model, but they can also be used in other models and in field applications. Title: Asymptotic height-diameter equations for twenty-four tree species in western Oregon Author: Spies, Thomas A. (Thomas Allen), Garman, Steven L. (Steven Lee), 1955-, Acker, Steven A., Ohmann, Janet L., Oregon State University. Forest Research Laboratory Equations for predicting height from diameter outside bark at breast height (DBH) were generated for 24 tree species in western Oregon. The equations were based on the asymptotic Chapman-Richards function. Because geographic location and site productivity may influence height-diameter relationships, height-diameter measures from 8727 plots were first grouped by site class in each of seven ecoregions. Equation coefficients were derived by weighted, nonlinear least-squares regression. Although species differences in the degree of equation fit were evident, the Chapman- Richards function provided reliable predictions of height from DBH overall. These equations were developed specifically for the ZELIG.PNW forest dynamics model, but they can also be used in other models and in field applications. Close

• 30. [Article] Machines and techniques for skyline yarding of smallwood

  Research on skyline machines and techniques currently available for yarding smallwood is reviewed. Three categories of machines are discussed: used yarders (with a low initial cost) adaptable to smallwood, ...

  Citation × Citation Citation Abstract Copy Title: Machines and techniques for skyline yarding of smallwood Author: Oregon State University. Forest Research Laboratory, Kellogg, L. D. (Loren D.) Research on skyline machines and techniques currently available for yarding smallwood is reviewed. Three categories of machines are discussed: used yarders (with a low initial cost) adaptable to smallwood, new and versatile yarders (with a high Initial cost) manufactured in the United States, and new, foreign-built yarders (with a low initial cost) specifically developed for smallwood. Used, inexpensive yarders can be a viable option for yarding smallwood, but carriage selection and timber size are important considerations. Prebunching small logs with a separate, low-cost system can increase yarding production and lower harvesting costs incurred with expensive new yarders. Proper determination of crew size and equipment balance can produce more cost-effective use of new, low-cost yarders. Because smallwood logging will increase in the Pacific Northwest as log diameter continues to drop, additional research and evaluation to Improve the effectiveness of machines and techniques is essential. Title: Machines and techniques for skyline yarding of smallwood Author: Oregon State University. Forest Research Laboratory, Kellogg, L. D. (Loren D.) Research on skyline machines and techniques currently available for yarding smallwood is reviewed. Three categories of machines are discussed: used yarders (with a low initial cost) adaptable to smallwood, new and versatile yarders (with a high Initial cost) manufactured in the United States, and new, foreign-built yarders (with a low initial cost) specifically developed for smallwood. Used, inexpensive yarders can be a viable option for yarding smallwood, but carriage selection and timber size are important considerations. Prebunching small logs with a separate, low-cost system can increase yarding production and lower harvesting costs incurred with expensive new yarders. Proper determination of crew size and equipment balance can produce more cost-effective use of new, low-cost yarders. Because smallwood logging will increase in the Pacific Northwest as log diameter continues to drop, additional research and evaluation to Improve the effectiveness of machines and techniques is essential. Close