Index Catalog // ScholarsArchive@OSU

Soil-site productivity relationships of central Oregon ponderosa pine

Creator:: Wilson, Duncan Steil, 1969-
Abstract:: The relationship between annual foliage production and nitrogen and water stress was examined in 14 naturally regenerated, mid-rotation ponderosa pine stands in central Oregon. Current-year and older foliage masses, and foliage nitrogen contents and concentration were estimated from 132 destructively sampled trees. Litterfall mass and nitrogen retranslocation rates from senescing...
Resource Type:: Dissertation

The expression of functional traits during seedling establishment in two populations of Pinus ponderosa from contrasting climates

Creator:: Kerr, Kelly L.
Abstract:: Vegetation patterns and species distributions are strongly linked to soil moisture regimes, and populations within a species from contrasting climatic regimes could exhibit differences in the degree to which certain functional traits related to establishment are expressed. Tree seedling survival is crucial for forest regeneration, and thus may be a...
Resource Type:: Masters Thesis
Full Text:: of ponderosa pine (Pinus ponderosa) from sites with contrasting climate regimes east (PIPOEAST) and

Performance of Pinus ponderosa seedlings in clearcuts, patch cuts and undisturbed forests on lavas

Creator:: Hutten, Martin A. B.
Abstract:: The survival, growth, foliar nutrient status, ectomycorrhiza (EM) colonization, and associative N-fixation of ponderosa pine seedlings (Pinus ponderosa var. ponderosa Doug!. ex Laws.) were studied under different gap sizes in forest canopy during the first growing season. Seedling performance variables were assessed relative to gap size of the forest canopy...
Resource Type:: Masters Thesis

Phytosociology of the ponderosa pine type on pumice soils in the Upper Williamson River Basin, Klamath County, Oregon

Creator:: Volland, Leonard A.
Abstract:: The study was conducted over approximately 191,000 acres in central Klamath County, Oregon. The research had three objectives: first, to describe and classify the seral and near-climax vegetation by using polyclimax principles; secondly, to determine the southern extension of five plant associations and one plant associes as previously described by...
Resource Type:: Masters Thesis
Full Text:: Title PHYTOSOCIOLOGY OF THE PONDEROSA PINE TYPE ON PUMICE SOILS IN THE UPPER WILLIAMSON RIVER BASIN

Geographic variation in central Oregon ponderosa pine (Pinus ponderosa Laws.) : seed germination; seed, wing, and cone morphology; seed color

Creator:: Weber, John C., 1948-
Abstract:: Geographic variation was investigated among 225 locations from five geographically disjunct regions in central Oregon. Characters included: germination speed and uniformity in two test environments differing in stratification period and incubation temperature; weight, three dimensions and three 'angles' of seeds; weight and three dimensions of wings; cone length and scale...
Resource Type:: Dissertation
Full Text:: in Central Oregon Ponderosa Pine (Pinus Ponderosa Laws.): Seed Germination; Seed, Wing and Cone

Fungitoxicities of NaMDC decomposition products to decay fungi colonizing Doulgas-fir and ponderosa pine wood

Creator:: Canessa, Edwin
Abstract:: Metham sodium or NaMDC is one of the four major soil fumigants that are currently registered for controlling internal decay of wood products in use. Fumigants are used primarily in utility poles but are also applied to piling, timbers and other large wood members. NaMDC must decompose to fungitoxic compounds...
Resource Type:: Masters Thesis

Soil compaction in central Oregon volcanic ash soils and the subsequent effects on residual ponderosa pine growth

Creator:: Parker, Robert T.
Abstract:: Although previous research in central Oregon has shown soil compaction can lead to a decline in site productivity, the subject is not understood well enough to predict the growth changes resulting from a given level of soil compaction. A study was initiated to relate the basal area, height and volume...
Resource Type:: Masters Thesis
Full Text:: the soil strength conditions of three ponderosa pine stands growing in the central Oregon volcanic

Selective light marking in ponderosa pine of Eastern Oregon

Creator:: Edmiston, Floyd H.
Resource Type:: Undergraduate Thesis
Full Text:: Selective light marking in ponderosa pine of Eastern Oregon

Reduction in growth of pole-sized Ponderosa pine related to a Pandora moth outbreak in central Oregon

Creator:: Cochran, P. H.
Abstract:: A pandora moth (Coloradia pandora Blake) outbreak began in 1991 in a ponderosa pine (Pinus ponderosa Dougl. ex. Laws) spacing study area that also included scattered sugar pine (P. lambertiana Dougl). The relation of defoliation to five tree spacings (with and without understory vegetation) was examined, and stand growth reduction...
Resource Type:: Technical Report

Classification strategies for unbalanced binary maps : finding Ponderosa pine in the Willamette Valley

Creator:: Riddell, Audrey P.
Abstract:: Forest species classifications are becoming increasingly automated as advances are made in machine learning. The algorithms used to identify tree species range from simple decision trees to intricate neural networks, and often excel in accurately delineating tree species. However, complex algorithms can have high input costs, including the cost of...
Resource Type:: Masters Thesis
Full Text:: plantations in the Willamette Valley in western Oregon. Willamette Valley ponderosa pine (WVPP) is a native

ScholarsArchive@OSU

Soil-site productivity relationships of central Oregon ponderosa pine

The expression of functional traits during seedling establishment in two populations of Pinus ponderosa from contrasting climates

Performance of Pinus ponderosa seedlings in clearcuts, patch cuts and undisturbed forests on lavas

Phytosociology of the ponderosa pine type on pumice soils in the Upper Williamson River Basin, Klamath County, Oregon

Geographic variation in central Oregon ponderosa pine (Pinus ponderosa Laws.) : seed germination; seed, wing, and cone morphology; seed color

Fungitoxicities of NaMDC decomposition products to decay fungi colonizing Doulgas-fir and ponderosa pine wood

Soil compaction in central Oregon volcanic ash soils and the subsequent effects on residual ponderosa pine growth

Selective light marking in ponderosa pine of Eastern Oregon

Reduction in growth of pole-sized Ponderosa pine related to a Pandora moth outbreak in central Oregon

Classification strategies for unbalanced binary maps : finding Ponderosa pine in the Willamette Valley

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