Index Catalog // ScholarsArchive@OSU

Creator:: Gartner, Barbara L., Morrell, Jeffrey J., Freitag, Camille M., and Spicer, Rachel
Abstract:: Heartwood durability of Douglas-fir (Pseudotsuga menziesii (Mirb.) Franco var. menziesii) was studied as a function of vertical and radial position in boles of trees with a wide range of leaf area/sapwood area ratios. Six 34- year-old trees were harvested from each of three plots established 14 years before: very dense,...
Resource Type:: Article

Creator:: Taylor, Adam M., Gartner, Barbara L., and Morrell, Jeffrey J.
Abstract:: This paper reviews literature on the formation of heartwood and on the components that affect natural durability. It includes discussion about the function of heartwood in living trees, factors influencing the natural durability of heartwood, the process of heartwood formation, and variations in heartwood quantity and quality. Heartwood formation is...
Resource Type:: Article

Creator:: Morrell, Jeffrey J., Paillard, Alice, Gnoblei, Dominique, Gartner, Barbara L., Milota, Michael R., and Rhatigan, Ronald G.
Abstract:: The air permeability of western hemlock from coastal forests in western Oregon was assessed. Permeability varied widely among trees, as well as by position within individual trees. Permeability tended to decrease with distance inward from the bark, a trend implying that this species produces a heartwood zone. These variations may...
Resource Type:: Article

Creator:: DeBell, Jeffrey D., Morrell, Jeffrey J., and Gartner, Barbara L.
Abstract:: The high decay resistance of western redcedar (Thuja plicata Donn) is due to the presence of toxic extractives, called tropolones, in the heartwood. Therefore, tropolone content may be used as an indicator of decay resistance. With increment core-sized samples of western redcedar heartwood, we used gas chromatography to measure tropolone...
Resource Type:: Article

Creator:: Silva, Antonio, Gartner, Barbara L., and Morrell, Jeffrey J.
Abstract:: While wood plastic composites have gained an increasingly large share of the market for decks and other outdoor structures, there are many questions about the long-term potential for biodeterioration of these materials. While the plastic does appear to retard moisture uptake, thereby slowing the rate of degradation, a number of...
Resource Type:: Preprint and Article

Creator:: Taylor, Adam M., Gartner, Barbara L., and Morrell, Jeffrey J.
Abstract:: Understanding how silvicultural treatments and changes in the forest resource will affect wood quality characteristics, including heartwood natural durability, is a critical need for forest managers. Because heartwood properties can be affected by environmental disturbances, including silvicultural practices used to grow trees faster, we need to know if increased growth...
Resource Type:: Article

ScholarsArchive@OSU