Index Catalog // ScholarsArchive@OSU

Crown structure and growth efficiency of red spruce in uneven-aged, mixed-species stands in Maine

Creator:: Maguire, Douglas A., Brissette, John C., and Gu, Lianhong
Abstract:: Several hypotheses about the relationships among individual tree growth, tree leaf area, and relative tree size or position were tested with red spruce (Picea rubens Sarg.) growing in uneven-aged, mixed-species forests of south-central Maine, U.S.A. Based on data from 65 sample trees, predictive models were developed to (i) estimate the...
Resource Type:: Article
Full Text:: , mixed-species stands in Maine Douglas A. Maguire, John C. Brissette, and Lianhong Gu Abstract:Several

Conifer response to three silvicultural treatments in the Oregon Coast Range foothills

Creator:: Walter, Scott T. and Maguire, Chris C.
Abstract:: This study assessed growth, condition, and mortality of residual trees one decade after harvest across three silvicultural treatments in thirty 85- to 125-year-old Douglas-fir (Pseudotsuga menziesii (Mirb.) Franco) stands in the Oregon Coast Range foothills. Group-selection cuts had 33% of the entire stand volume extracted as patches approximately 0.2–0.8 ha...
Resource Type:: Article
Full Text:: Coast Range foothills Scott T. Walter and Chris C. Maguire Abstract: This study assessed growth

Long-term patterns of diameter and basal area growth of old-growth Douglas-fir trees in western Oregon

Creator:: Poage, Nathan Jeremy and Tappeiner, John C., II
Abstract:: Diameter growth and age data collected from stumps of 505 recently cut old-growth Douglas-fir (Pseudotsuga menziesii (Mirb.) Franco) trees at 28 sample locations in western Oregon (U.S.A.) indicated that rapid early and sustained growth of old Douglas-fir trees were extremely important in terms of attaining large diameters at ages 100–300...
Resource Type:: Article
Full Text:: Douglas-fir trees in western Oregon Nathan J. Poage and John C. Tappeiner, II Abstract: Diameter growth

Intensifying a heuristic forest harvest scheduling search procedure with 2-opt decision choices

Creator:: Bettinger, Pete, 1962-, Boston, Kevin, and Sessions, John
Abstract:: Forest management problems with even-flow and adjacency considerations are difficult to solve optimally. A heuristic search intensification process, which uses two types of decision procedures, changes to single-decision choices (1-opt moves) and changes to two-decision choices simultaneously (2-opt moves), was used in an attempt to locate feasible and efficient solutions...
Resource Type:: Article
Full Text:: procedure with 2-opt decision choices Pete Bettinger, Kevin Boston, and John Sessions Abstract: Forest

Clonal expansion and seedling recruitment of Oregon grape (Berberis nervosa) in Douglas-fir (Pseudotsuga menziesii) forests: comparisons with salal (Gaultheria shallon)

Creator:: Huffman, David W. (William), 1962- and Tappeiner, John C.
Abstract:: Seedling regeneration and morphology of Oregon grape (Berberis nervosa Pursh) and salal (Gaultheria shallon Pursh) were studied in thinned and unthinned Douglas-fir (Pseudotsuga menziesii (Mirb.) Franco) stands in the central Coast Range, Oregon. Above- and below-ground growth of both species were significantly and negatively correlated with stand density. Oregon grape...
Resource Type:: Article
Full Text:: shallon)1 David W. Huffman and John C. Tappeiner II Abstract: Seedling regeneration and morphology of

Salmonberry and salal annual aerial stem production: the maintenance of shrub cover in forest stands

Creator:: Tappeiner, John C., Zasada, John C., Huffman, David W. (William), 1962-, and Ganio, Lisa M.
Abstract:: Annual sprouting of aerial stems and ramets enables populations of salmonberry (Rubus spectabilis Pursh), salal (Gaultheria shallon Pursh), and probably other forest shrubs to maintain dense covers (>20 000 stems/ha). We studied annual stem production of salmonberry on cut (all stems cut within 15 cm of the ground) and uncut...
Resource Type:: Article
Full Text:: production: the maintenance of shrub cover in forest stands1 John C. Tappeiner, II, John C. Zasada, David W

Genetic variation in drought hardiness of coastal Douglas-fir seedlings from British Columbia

Creator:: Anekonda, T. S., Lomas, M. Christine, Adams, W. T., Kavanagh, Kathleen L., 1955-, and Aitken, S. N.
Abstract:: Abstract: Genetic variation in drought hardiness traits and their genetic correlations with growth potential and17re1c6overy traits were investigated in 39 full-sib families of coastal Douglas-fir (Pseudotsuga menziesii var. menziesii (Mirb.) Franco) from southwestern British Columbia. Seedlings of these families were grown in raised nursery beds and subjected to three moisture...
Resource Type:: Article
Full Text:: and Mackay 1996): [5] h n r n t hf 2 i 2= + − + − 1 1 1 1 ( ) ( ) where n is the harmonic mean

Effects of contrasting light and soil moisture availability on the growth and biomass allocation of Douglas-fir and red alder

Creator:: Chan, Samuel S., Radosevich, Steven R., and Grotta, Amy T.
Abstract:: We examined growth and biomass allocation of individual Douglas-fir (Pseudotsuga menziesii (Mirb.) Franco) and red alder (Alnus rubra Bong.) seedlings grown for 3 years under contrasting combinations of light and water. Alder growth was always greater than Douglas-fir. Full sunlight and soil moisture at field capacity caused large differences in...
Resource Type:: Article
Full Text:: T. Grotta Abstract: We examined growth and biomass allocation of individual Douglas-fir

Genetic variation in cold hardiness of Douglas-fir in relation to parent tree environment

Creator:: Balduman, Lisa M., Aitken, S. N., Harmon, M., and Adams, W. T.
Abstract:: The extent to which parent trees within breeding zones of coastal Douglas-fir (Pseudotsuga menziesii var. menziesii (Mirb.) Franco) are locally adapted to their native environments was evaluated. Forty families from each of one Coastal and one Cascade breeding population in Oregon were assessed for cold hardiness and growth phenology, and...
Resource Type:: Article
Full Text:: small scale. The aridity index (A; Tuhkanen 1980) was calculated asA = P/(T +10), whereP and T are the

Impact of the foliar pathogen Swiss needle cast on wood quality of Douglas-fir

Creator:: Johnson, G. R., Grotta, Amy T., Gartner, Barbara L., and Downes, Geoff
Abstract:: Many stands of Douglas-fir (Pseudotsuga menziesii (Mirb.) Franco) near coastal areas of Oregon and Washington are heavily infected with the foliar pathogen causing Swiss needle cast (SNC) disease, and yet there is very little research on the resulting wood quality. Modulus of elasticity (MOE), modulus of rupture (MOR), microfibril angle...
Resource Type:: Article
Full Text:: on wood quality of Douglas-fir G.R. Johnson, Amy T. Grotta, Barbara L. Gartner, and Geoff Downes

ScholarsArchive@OSU

Crown structure and growth efficiency of red spruce in uneven-aged, mixed-species stands in Maine

Conifer response to three silvicultural treatments in the Oregon Coast Range foothills

Long-term patterns of diameter and basal area growth of old-growth Douglas-fir trees in western Oregon

Intensifying a heuristic forest harvest scheduling search procedure with 2-opt decision choices

Clonal expansion and seedling recruitment of Oregon grape (Berberis nervosa) in Douglas-fir (Pseudotsuga menziesii) forests: comparisons with salal (Gaultheria shallon)

Salmonberry and salal annual aerial stem production: the maintenance of shrub cover in forest stands

Genetic variation in drought hardiness of coastal Douglas-fir seedlings from British Columbia

Effects of contrasting light and soil moisture availability on the growth and biomass allocation of Douglas-fir and red alder

Genetic variation in cold hardiness of Douglas-fir in relation to parent tree environment

Impact of the foliar pathogen Swiss needle cast on wood quality of Douglas-fir

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