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Filtering by: Contributor advisor sim Cromack, Kermit Jr. Remove constraint Contributor advisor sim: Cromack, Kermit Jr. Degree Name Doctor of Philosophy (Ph.D.) Remove constraint Degree Name: Doctor of Philosophy (Ph.D.)

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Soil carbon and nutrient dynamics of windthrow chronosequences in spruce-hemlock forests of southern Alaska

Creator:

McClellan, Michael H.

Resource Type:

Dissertation
Ecosystem effects of vegetation removal in coastal Oregon Douglas-fir experimental plantations : impacts on ecosystem production, tree growth, nutrients, and soils

Creator:

Yildiz, Oktay

Abstract:

Effects of partial understory removal on belowground and aboveground ecosystem properties were investigated in 5 and 15 yr old Douglas-fir (Pseudotsuga menziesll (Mirb.) Franco) experimental plantations in western Oregon. Seedling survival was not affected by understory removal at age 5 yr. But through age 15 yr, understory removal increased seedling...

Resource Type:

Dissertation
Effects of nutrient and light limitation on mountain hemlock : susceptibility to laminated root rot

Creator:

Matson, P. A. (Pamela A.)

Abstract:

Mountain hemlock forests in the Oregon Cascades exhibit wave-form dieback resulting from infection by laminated root rot (Phellinus weirii). Although Phellinus remains viable in dead roots after the wave of dieback passes, many regenerating mountain hemlock forests do not become immediately reinfected. We measured at least a doubling of nitrogen...

Resource Type:

Dissertation
Case studies of red alder and Sitka alder in Douglas-fir plantations : nitrogen fixation and ecosystem production

Creator:

Binkley, Dan

Abstract:

Seven case studies of 11 ecosystems were used to examine the effects of nitrogen-fixing alders in Douglas-fir plantations. The first case study quantified nitrogen (N) fixation and aboveground net primary production in a young Sitka alder [Alnus sinuata (Regel) Rydb.] ecosystem. At 5 yr of age, the N fixation (C₂2H₂...

Resource Type:

Dissertation
The effect of light and nitrogen limitation on western conifers : response to Armillaria ostoyae infection

Creator:

Entry, James A.

Abstract:

Armillaria (Fr. ex. Fr.) is a parasite whose pathogenicity and role in forest ecosystems often depends upon the physiological condition of the tree. Therefore, I tested the frequency and severity of Armillaria ostoyae (Romagn.) Herink infection among Abies grandis (Dougl.) Lindl., Larix occidentalis Nutt., Pinus contorta var. latifolia (Engelm.), Pinus...

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Dissertation

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Academic Affiliation

Forest Science5

Advisor

Cromack, Kermit jr.5

Commencement Year

Commencement Year range begin – Commencement Year range end

Current results range from 1982 to 2001

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Committee Member

Baham, John1
Beschta, Robert1
Bormann, Bernard1
Myrold, David1
Radosevich, Steve1
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Creator

Binkley, Dan1
Entry, James A.1
Matson, P. A. (Pamela A.)1
Mcclellan, Michael H.1
Yildiz, Oktay1

Date

Date range begin – Date range end

Current results range from 1982 to 2000

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Decade

2000-20091
1990-19991
1980-19893

Degree Field

Forest Science5

Degree Level

Doctoral5

Degree Name

Doctor of Philosophy (Ph.D.)[remove]5

Language

English [eng]5

Non-Academic Affiliation

Oregon State University. Graduate School5

Peer Reviewed

No4

Resource Type

Dissertation5

Rights Statement

Copyright Not Evaluated4
In Copyright1

Subject

Armillaria1
Conifers -- Disease and pest resistance1
Douglas fir -- Ecology -- Oregon1
Ecosystem health -- Oregon1
Forest management -- Northwest, Pacific1
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