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Ecology of Corydalis aquae-gelidae, a rare riparian plant

Creator:: Goldenberg, Douglas M.
Abstract:: Corydalis aquae-gelidae is a large herbaceous perennial in the Fumariaceae that has high habitat specificity. It is endemic to the western Cascade Range of Oregon and Washington, almost entirely on the Mt. Hood and Gifford Pinchot National Forests. It is a federal C2 candidate under the Endangered Species Act and...
Resource Type:: Masters Thesis
Full Text:: Riparian Plant. Abstract approved: Donald B obel Corydalis aquae-gelidae is a large herbaceous perennial

Organic pesticide modification of the species interactions in an annual plant community

Creator:: Pfleeger, Thomas G.
Resource Type:: Masters Thesis
Full Text:: : Donald Zobel The impact on natural plant communities from the release of organic chemicals into the

The ecology of lupines in Crater Lake National Park, Oregon

Creator:: Kerle, Elizabeth A.
Resource Type:: Masters Thesis
Full Text:: National Park. Oregon Redacted for Privacy Abstract approved: Donald b. zdidel The ecology of two N2

Forest structure and regeneration in the Tsuga heterophylla - Abies amabilis transition zone, central Western Cascades, Oregon

Creator:: Stewart, Glenn H.
Abstract:: The dynamics of stands in the mid-elevation old-growth Douglas-fir (Pseudotsuga menziesii) forests of the central western Oregon Cascade Range were investigated using stand structure analysis. Trees with different growth rates were commonly present in the same stand, which resulted often in a weak correlation between tree diameter and age. Thus,...
Resource Type:: Dissertation
Full Text:: Redacted for Privacy (,- Donald B. lobel The dynamics of stands in the mid-elevation old-growth Douglas

Responses of forest understory plants to burial by volcanic tephra from Mount St. Helens, Washington

Creator:: Antos, Joseph A.
Abstract:: The effects of burial by tephra (volcanic aerial ejecta) on forest understory plants were examined northeast of Mount St. Helens, Washington, in the area where the 18 May 1980 eruption deposited tephra but did not destroy canopy trees. At six sites along a tephra depth gradient from 2-15 cm, understory...
Resource Type:: Dissertation
Full Text:: , Dr. Donald B. Zobel, for numerous forms of assistance. I appreciate the help received from my

Comparative water relations of Abies grandis, Abies concolor and their hybrids

Creator:: Yoder, Barbara J.
Abstract:: Comparisons were made of the tissue water relations, stomatal conductance and growth of grand fir (Abies grandis), white fir (Abies concolor) and their hybrids growing in a western Oregon plantation. The grand fir were naturally-regenerated trees native to the study site. White fir and hybrids were the progeny of controlled...
Resource Type:: Masters Thesis

Growth and reproductive ecology of Larix laricina in interior Alaska

Creator:: Brown, Kevin R.
Abstract:: Larix laricina in Alaska occurs on sites ranging from productive slopes and riverbottoms to wet bogs underlain by permafrost. It is largest on sites without permafrost, where it is associated with Picea glauca, but is much more common in bogs, where it occurs with Picea mariana. In this study, I...
Resource Type:: Masters Thesis
Full Text:: LARICINA IN INTERIOR ALASKA Abstract approved: Redacted for Privacy bonAdB. Zobel Larix laricina in

The relation of soil characteristics to growth and distribution of Chamaecyparis lawsoniana and Thuja plicata in southwestern Oregon

Creator:: Imper, David Kimberly
Abstract:: Twelve plots at six sites in southwestern Oregon were studied to determine the degree to which various soil characteristics are related to the occurrence and growth of Chamaecyparis lawsoniana and Thuja plicata. Soil profiles and vegetation were described in each plot, and measurements were made of insolation, soil and litter...
Resource Type:: Masters Thesis
Full Text:: lkoLltcT B. Zobel Twelve plots at six sites in southwestern Oregon were studied to determine the degree

Ecology of Pinus albicaulis on Bachelor Butte, Oregon

Creator:: Lueck, Dennis
Resource Type:: Masters Thesis
Full Text:: approved: Redacted for privacy Donald B. Toybl The ecology of whitebark pine (Pinus albicaulis Engeim

The vegetation dynamics of Pinus contorta forest, Crater Lake National Park, Oregon

Creator:: Zeigler, Robert S.
Abstract:: This study describes the soils, vegetation and age structure of the Pinus contorta forests of Crater Lake National Park. Growth rates of P. contorta, and levels of infection and impact of dwarf mistletoe (Arceuthobium americanu1r) on growth of P. contorta individuals are compared among communities. Vegetation description is based on...
Resource Type:: Masters Thesis

ScholarsArchive@OSU

Ecology of Corydalis aquae-gelidae, a rare riparian plant

Organic pesticide modification of the species interactions in an annual plant community

The ecology of lupines in Crater Lake National Park, Oregon

Forest structure and regeneration in the Tsuga heterophylla - Abies amabilis transition zone, central Western Cascades, Oregon

Responses of forest understory plants to burial by volcanic tephra from Mount St. Helens, Washington

Comparative water relations of Abies grandis, Abies concolor and their hybrids

Growth and reproductive ecology of Larix laricina in interior Alaska

The relation of soil characteristics to growth and distribution of Chamaecyparis lawsoniana and Thuja plicata in southwestern Oregon

Ecology of Pinus albicaulis on Bachelor Butte, Oregon

The vegetation dynamics of Pinus contorta forest, Crater Lake National Park, Oregon

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