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Creator:: Hedden, Roy L., Gara, Robert I., U.S. International Biological Program. Coniferous Forest Biome, and University of Washington
Abstract:: The attack spatial pattern of the Douglas-fir beetle, Dendroctonus pseudotsugae Hopkins was shown to be regular within a given subarea of bark on its host, Pseudotsugae menziesii (Mirb.) Franco. Empirical arguments were advanced which indicated the uniform spacing of attacks was the result of a beetle controlled spacing mechanism dependent...
Resource Type:: Technical Report
Full Text:: PATTERN OF AN ENDEMIC DOUGLAS-FIR BEETLE POPULATION ABSTRACT The attack spatial pattern of the Douglas

Creator:: Hedden, Roy L., Gara, Robert I., U.S. International Biological Program. Coniferous Forest Biome, and University of Washington
Abstract:: Felled second-growth Douglas-fir trees in western Washington were used to determine the attack distribution and develop a sampling technique for an endemic Douglas-fir beetle, Dendroctonue peeudotaugae Hopk. (Coleoptera: Scolytidae) population. The attack density varied by circumferential position. The lowest density was on the upper bole and the highest on one...
Resource Type:: Technical Report
Full Text:: Douglas-fir trees in western Washington. Thus recognizing the Importance of the Douglas-fir beetle in the

Creator:: Gara, Robert I., Dreyup, M., Hedden, Roy L., Merrifield, L. E., Souto, D., U.S. International Biological Program. Coniferous Forest Biome, and University of Washington
Resource Type:: Technical Report
Full Text:: beetles; attack characteristics of the Douglas-fir beetle; and preliminary investigation of the tree

Creator:: Cole, Dale W., Grier, Charles Crocker, 1938-, U.S. International Biological Program. Coniferous Forest Biome, and University of Washington
Abstract:: Intensive studies of the mineral cycling process in young-growth Douglas-fir stands have been in progress at the R. H. Thompson Research Center since 1966. During this time, a substantial body of information has been collected on the amounts, pathways, rates of transfer, and mechanisms that control transfer of elements in...
Resource Type:: Technical Report
Full Text:: INTERNAL REPORT 19 MINERAL CYCLING IN DOUGLAS-FIR

Creator:: Scott, David R. M., Lassoie, J. P., U.S. International Biological Program. Coniferous Forest Biome, and University of Washington
Abstract:: Preliminary results of a comprehensive study of hydraulic fluctuations in Douglas-fir (Pseudotsuga menziesii) stems in response to plant water status and environment are presented. Diurnal changes in stem circumference near DBH of a dominant Douglas-fir were monitored using automated band dendrometers. Measurements of transpiration rate, internal moisture stress and stomata...
Resource Type:: Technical Report
Full Text:: of lower elevations in western Washington; the average temperature in July is 16°C, in January, 3°C

Creator:: Kline, J. R., Reed, Kenneth Lee, 1942-, Waring, Richard H., Stewart, M. L., U.S. International Biological Program. Coniferous Forest Biome, and University of Washington
Resource Type:: Technical Report
Full Text:: , Illinois 2 Department of Natural Resources, Olympia, Washington. 3 Oregon State University, Corvallis

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