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Thinning effects on stand and tree growth : different perspectives on same old questions

Creator:: Romero Castaño, Pablo
Abstract:: The search for the stand density that optimizes growth and hence generates the maximum amount of wood is one of the philosopher’s stone in modern forestry. Since scientific methods were applied to forestry, numerous generations of foresters have studied the relations between stocking density and growth, obtaining diverse results and...
Resource Type:: Masters Thesis
Full Text:: largest and oldest Douglas-fir thinning experiments with the native region of this species. The

Growth growing-stock relationships in young Douglas-fir (Pseudotsuga menziesii (Mirb.) Franco)

Creator:: Sales Luis, Jaime Fernando
Abstract:: In the thinning theory, the hypothesis that the stand growth is unaffected by the density over a broad range of densities is generally accepted today. In this study three different measures of stand density were used in basal area growth and volume growth multiple regressions in even-aged managed stands, searching...
Resource Type:: Masters Thesis

Fifth-year growth responses of Douglas-fir to crowding and other competition

Creator:: Cole, Elizabeth C.
Abstract:: This thesis examines the competitive aspects of Douglas-fir trees growing with two commonly associated competitors--red alder and grass--at varying densities. Two Nelder plots in three different environments in the Oregon Coast Range were studied. The sites represented the warm, dry climate of the Willamette Valley; the warm, moist climate of...
Resource Type:: Masters Thesis

Distribution and growth of advance Douglas-fir regeneration in commercially thinned stands in the Oregon Coast Range

Creator:: Beer, Louis W.
Abstract:: This study examined the abundance, size, growth, and age of advance regeneration Douglas-fir, beneath an eighty year-old overstory at a single site on plots subjected to different overstory thinning treatments. Treatments consisted of keeping overstory basal area within upper and lower limits for periods of 12-17 years which, depending upon...
Resource Type:: Masters Thesis

Habitat relationships of birds and young-growth Douglas-fir in northwestern California

Creator:: Marcot, Bruce G.
Abstract:: Ninety-one species of birds were surveyed in grass/forb, early and late shrub/sapling, pole, and medium sawtimber stages of young-growth Douglas-fir in northwestern California; patterns of bird distribution and abundance were related to habitat conditions and even-age silvicultural treatments. Seven species (band-tailed pigeon, western wood pewee, dusky flycatcher, western bluebird, fox...
Resource Type:: Dissertation
Full Text:: Relationships of Birds and Young- Growth Douglas-fir in North estern California Abstract approved: Dr. E. Ch0

Growth and structure of three adjacent 22 year-old Douglas-fir stands in the Oregon Coast Range

Creator:: Espinosa Bancalari, Miguel A.
Abstract:: In the Oregon Coast Range, total biomass and biomass increment, leaf area, the relationship between leaf area and sapwood area, and patterns of growth and form of individual trees, were studied in 40 Douglas-fir (Pseudotsuga menziesfi (Mirb.) Franco) trees from three adjacent 22 year-old plantations that had developed at different...
Resource Type:: Dissertation

Competitive interactions between Douglas-fir or ponderosa pine and whiteleaf manzanita

Creator:: White, Diane E.
Abstract:: Juvenile Douglas-fir, ponderosa pine, and whiteleaf manzanita growth in southwest Oregon varied with density of co-developing manzanita and presence of herbaceous cover. Plant xylem pressure potential and stomatal conductance of each species was responsive to competition-induced depletion of soil water. Rates varied among species. The best correlations with growth usually...
Resource Type:: Dissertation

Influence of light on the growth of advance regeneration in the understory of Douglas-fir dominated forests in western Oregon

Creator:: Deisenhofer, Florian
Abstract:: The growth potential of Douglas-fir, grand fir and western hemlock advance regeneration in the forest understory of Douglas-fir-dominated forests was investigated to detennine the feasibility of selection cutting systems in northwest Oregon. This study compared the growth of Douglas-fir, grand fir and western hemlock advance regeneration along a light gradient...
Resource Type:: Masters Thesis
Full Text:: , thinning cycles of 6 to 10 years appear necessary. Since advance regeneration of Douglas-fir and grand

Effects of release from suppression on hydraulic architecture, photosynthetic capacity and functional wood characteristics in Douglas-fir and western hemlock

Creator:: Renninger, Heidi
Abstract:: Douglas-fir (Pseudotsuga menziesii (Mirb.) Franco), a shade intolerant species, and western hemlock (Tsuga heterophylla (Raf.) Sarg.), a shade tolerant species, were compared to learn more about the temporal pattern of release from suppression in both species, whether hydraulic architecture or photosynthetic capacity constrain release and how wood functional properties change...
Resource Type:: Masters Thesis
Full Text:: evidence showing that Douglas-fir trees experience a lag between the time of thinning 9 and when

ScholarsArchive@OSU

Thinning effects on stand and tree growth : different perspectives on same old questions

Growth growing-stock relationships in young Douglas-fir (Pseudotsuga menziesii (Mirb.) Franco)

Fifth-year growth responses of Douglas-fir to crowding and other competition

Distribution and growth of advance Douglas-fir regeneration in commercially thinned stands in the Oregon Coast Range

Habitat relationships of birds and young-growth Douglas-fir in northwestern California

Growth and structure of three adjacent 22 year-old Douglas-fir stands in the Oregon Coast Range

Competitive interactions between Douglas-fir or ponderosa pine and whiteleaf manzanita

Influence of light on the growth of advance regeneration in the understory of Douglas-fir dominated forests in western Oregon

Effects of release from suppression on hydraulic architecture, photosynthetic capacity and functional wood characteristics in Douglas-fir and western hemlock

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