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Creator:: Adams, W. T., Hipkins, Valerie D., Burczyk, J., and Randall, W. K.
Abstract:: Pollen contamination was investigated in one block (block 4) of a 10-block Douglas-fir (Pseudotsuga menziesii (Mirb.) Franco) seed orchard complex in western Oregon. Blocks (25 clones each) represent different breeding zones; thus, contaminant pollen sources not only included the adjacent natural stand of Douglas-fir, but also other blocks within the...
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Full Text:: W.T. Adams, V.D. Hipkins, J. Burczyk, and W.K. Randall Abstract: Pollen contamination was

Creator:: Hann, David W.
Abstract:: In their recent Canadian Journal of Forest Research Comment 368 article, Wilson and Oliver (2000) developed an equation for predicting the average ratio of height to diameter at breast height for the largest 250 trees/ha (H/DL250) in unthinned stands as a function of initial density and dominant height of the...
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Full Text:: -fir plantations1 David W. Hann Comment 368In their recentCanadian Journal of Forest Researcharti

Creator:: Ritchie, Martin W. and Hann, David W.
Abstract:: The efficiency of six disaggregative methods and two individual-tree methods was evaluated in terms of their ability to predict 5-year basal area increment for Douglas-fir (Pseudotsuga menziesii (Mirb.) Franco) stands in western Oregon. Models were developed for predicting gross stand basal-area increment and individual-tree diameter increment. In addition, models were...
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Full Text:: Douglas-fir stands in western Oregon1 Martin W. Ritchie and David W. Hann Abstract: The efficiency of

Creator:: Garber, Sean M., Temesgen, Hailemariam, Monleon, Vicente J., and Harm, David W.
Abstract:: Subsampling and subsequent imputation of tree heights can improve the predictive performance of stand volume estimation but may also introduce biases. Using coastal Douglas-fir data from southwest Oregon, USA, the predictive performance of several height imputation strategies for estimating stand volume was evaluated. A subsample of 1-15 trees was randomly...
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Full Text:: , Vicente J. Monleon, and David W. Harm Abstract: Subsampling and subsequent imputation of tree heights can

Creator:: Cornett, Meredith W., Puettmann, Klaus J., and Reich, Peter B.
Abstract:: There is concern that the conifer component of mixed conifer-deciduous forests in the Great Lakes region is on the decline, possibly the result of insufficient conifer regeneration. Limitations on conifer regeneration that occur during the first 18 months of seedling emergence and establishment were examined for Abies balsamea (L.) Mill....
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Full Text:: –deciduous forests Meredith W. Cornett, Klaus J. Puettmann, and Peter B. Reich Abstract: There is concern

Creator:: Temesgen, H., Monleon, V. J., and Hann, D. W.
Abstract:: Using an extensive Douglas-fir data set from southwest Oregon, we examined the (1) performance and suitability of selected prediction strategies, (2) contribution of relative position and stand-density measures in improving tree height (h) prediction values, and (3) effect of different subsampling designs to fill in missing h values in a...
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Full Text:: -mail: hailemariam.temesgen@oregonstate.edu). 553 Can. J. For. Res. 38: 553–565 (2008) doi:10.1139/X07

Creator:: Temesgen, Hailemariam, Hann, David W., and Monleon, Vincente J.
Abstract:: Selected tree height and diameter functions were evaluated for their predictive abilities for major tree species of southwest Oregon. Two sets of equations were evaluated. The first set included four base equations for estimating height as a function of individual tree diameter, and the remaining 16 equations enhanced the four...
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Full Text:: Southwest Oregon • Hailemariam Temesgenl David W. Hanni and Vincente J. Monleon Selected tree height and

Creator:: Simard, Suzanne W., Molina, Randy, Smith, Jane E., Perry, David A., and Jones, Melanie D.
Abstract:: Seedlings of Pseudotsuga menziesii (Mirb.) Franco and Betula papyrifera Marsh. were grown in the greenhouse in monoculture and dual culture in soils collected from a young mixed species plantation in the southern interior of British Columbia. The objectives of the study were (i) to evaluate the ability of P. menziesii...
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Full Text:: Betula papyrifera seedlings grown in mixture in soils from southern British Columbia Suzanne W. Simard

Creator:: Wang, Weihong and Morrell, J. J.
Abstract:: Wood-plastic composites are generally presumed to be inherently more resistant to moisture uptake than solid wood, but there is little data on the relative rates of moisture uptake in these materials over time. Trex[R] and Strandex[R] deck sections were immersed in water for up to 215 days, then sections were...
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Full Text:: characteristics of two wood-plastic composites Weihong Wang J. J. Morrell✳ While wood-plastic composites (WPC

Creator:: Morrell, Jeffrey J.
Abstract:: The bioassay with Aspergillus niger is a simple way of determining the presence and amount of pentachlorophenol or tributyltin oxide in wood, but it does not appear useful for measuring strongly fixed chemicals such as chromated copper arsenate, borate, and fluoride. Its effectiveness in detecting other preservatives has not been...
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Full Text:: JeHrey J. Morrell Assistant Professor Department of Forest Products, College of Forestry Oregon State

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