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Focus on forestry ; vol. 12, no. 2 (Spring 1999)

Creator:: Oregon State University. College of Forestry
Abstract:: Magazine of the OSU College of Forestry.
Resource Type:: Other
Full Text:: State University J fiJreStry Vol. 12, No. 2 - Encounters with ( ,"ropical forests. Autumn

Clearcut logging and flow flows in Oregon coastal watersheds

Creator:: Harr, R. Dennis (Robert Dennis), 1941-, Krygier, James T., and Oregon State University. Forest Research Laboratory
Resource Type:: Technical Report
Full Text:: . Denni Harr Assistant Professor oftForest_Hydrology James T. Krygier Coordinator, Forestry Extension

Yarding delays for advanced logging systems

Creator:: Dykstra, Dennis P. and Oregon State University. Forest Research Laboratory
Abstract:: Yarding delays add significantly to the time and cost required to obtain a given quantity of timber. In this study, they increased total yarding time by as much as 28 percent. As yarding system complexity increases, the frequency of delays can also be expected to increase. For one balloon yarding...
Resource Type:: Technical Report
Full Text:: Delays for Advanced Logging Systems ti Dennis P. Dykstra Research Paper 33 October 1976 7 ' 9Fc'I

Production rates and costs for cable, balloon, and helicopter yarding systems in old-growth Douglas-fir

Creator:: Dykstra, Dennis P. and Oregon State University. Forest Research Laboratory
Abstract:: This report describes initial results of a yarding time study for the Pansy Basin Study, a cooperative research project designed to test the performance of skylines, balloons, and helicopters operating under various conditions of timber and terrain, and over a range of silvicultural and landscape design prescriptions. Observations during the...
Resource Type:: Technical Report
Full Text:: in Old-Growth Douglas-fir COMPACT Dennis P. Dykstra Research Bulletin 18 September 1975 Forest

Production rates and costs for yarding by cable, balloon, and helicopter compared for clearcuttings and partial cuttings

Creator:: Dykstra, Dennis P. and Oregon State University. Forest Research Laboratory
Abstract:: This report supplements Research Bulletin 18 (1975) of the Forest Research Laboratory, School of Forestry, Oregon State University. Bulletin 18 summarized analyses of data for the first field season of the Pansy Basin Study. This Bulletin extends those analyses to the second, and final, field season. Time-study observations during the...
Resource Type:: Technical Report
Full Text:: , and Helicopter Compared for Clearcuttings and Partial Cuttings Dennis P. Dykstra Research Bulletin

A technique for the solution of the catenary problem in surveying

Creator:: Wilson, Robert L., Dykstra, Dennis P., Sessions, John, and Oregon State University. Forest Research Laboratory
Abstract:: A technique for solving efficiently the catenary problem encountered in surveying with tapes is presented. The theory of the catenary solution is outlined, and our technique is shown to solve correctly the catenary for all conditions. Analysis of error that compared the catenary correction to the more commonly used parabolic...
Resource Type:: Technical Report
Full Text:: Technique for the Solution of the Catenary Problem in Surveying Robert L. Wilson Dennis P. Dykstra John

Focus on forestry ; vol. 3, no. 1 (Winter 1990)

Creator:: Oregon State University. College of Forestry
Abstract:: Focus on Forestry is published three times each year (Fall, Winter, Spring) by the College of Forestry, Oregon State University.
Resource Type:: Other
Full Text:: at Oregon State University Winter1990 ERSAL researcher Dennis

Impacts of different philosophies on natural resources

Creator:: Shelby, Bo, 1948-, Arbogast, Sandie, Oregon State University. College of Forestry, Dykstra, Dennis, Angelstam, Per, and Cronon, William
Resource Type:: Conference Proceeding
Full Text:: ; : i l U U h t : fi j i I 4 w T J r Y w : _ _ _ _ _ A A . _ 4 ' , " - - . : i ' 3 W I . i f

Reduction in carbon uptake during turn of the century drought in western North America

Creator:: Schwalm, Christopher R., Williams, Christopher A., Schaefer, Kevin, Baldocchi, Dennis D., Black, T. Andrew, Goldstein, Allen H., Law, Beverly E., Oechel, Walter C., Paw U, Kyaw Tha, and Scott, Russel L.
Abstract:: Fossil fuel emissions aside, temperate North America is a net sink of carbon dioxide at present¹⁻³. Year-to-year variations in this carbon sink are linked to variations in hydroclimate that affect net ecosystem productivity³,⁴. The severity and incidence of climatic extremes, including drought, have increased as a result of climate warming⁵⁻⁸....
Resource Type:: Article
Full Text:: North America Christopher R. Schwalm1*, Christopher A. Williams2, Kevin Schaefer3, Dennis Baldocchi4,5

Focus on forestry ; vol. 6, no. 3 (Fall 1993)

Creator:: Oregon State University. College of Forestry
Abstract:: Magazine of the OSU College of Forestry.
Resource Type:: Other
Full Text:: Caird, Dennis J Caldwell, Bruce Alan Champion International Corp. Chien, Ching-Te Christensen, Dan

ScholarsArchive@OSU

Focus on forestry ; vol. 12, no. 2 (Spring 1999)

Clearcut logging and flow flows in Oregon coastal watersheds

Yarding delays for advanced logging systems

Production rates and costs for cable, balloon, and helicopter yarding systems in old-growth Douglas-fir

Production rates and costs for yarding by cable, balloon, and helicopter compared for clearcuttings and partial cuttings

A technique for the solution of the catenary problem in surveying

Focus on forestry ; vol. 3, no. 1 (Winter 1990)

Impacts of different philosophies on natural resources

Reduction in carbon uptake during turn of the century drought in western North America

Focus on forestry ; vol. 6, no. 3 (Fall 1993)

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