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Filtering by: Subject Douglas fir -- Fertilizers Remove constraint Subject: Douglas fir -- Fertilizers Committee Member Hibbs, David Remove constraint Committee Member: Hibbs, David Decade 2000-2009 Remove constraint Decade: 2000-2009

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Structure and development of old-growth Douglas-fir in central western Oregon

Creator:

Poage, Nathan Jeremy

Abstract:

The tree species and size structure of 9l old-growth forests dominated by Douglas-fir in central western Oregon was characterized using complete inventories of all trees larger than 20cm dbh over a mean area of 17.1ha at each site. Douglas-fir accounted for over 75% of the total average basal area (39.1...

Resource Type:

Dissertation
Patterns in understory vegetation communities across canopy gaps in young, Douglas-fir forests of western Oregon

Creator:

Fahey, Robert T.

Abstract:

Canopy gap formation is a major factor contributing to maintenance of overstory species diversity and stand structure in forests and may be integral to development of understory shrub and herb layers as well. Acknowledgement of gap formation as a fundamental feature of natural forests has led to consideration of gaps...

Resource Type:

Masters Thesis

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Gaps in Young, Douglas-fir Forests of Western Oregon U. Abstract approved
Stand development after 20-years of growth in Douglas-fir and red alder mixtures

Creator:

Garrelts, Brennan T.

Abstract:

This study examines the long-term role of interference on stand development of Douglas-fir (Pseudotsuga menziesii [Mirb.] Franco) and red alder (Alnus rubra Bong.) planted mixtures in the Central Cascades of Oregon, USA. The two species are common associates in naturally regenerated and planted conifer stands in the Pacific Northwest. Due...

Resource Type:

Masters Thesis

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June 13, 2008. Title: Stand Development after 20-years of Growth in Douglas-fir and Red Alder
Nitrogen dynamics across silvicultural canopy gaps in young forests of western Oregon

Creator:

Thiel, Aaron L.

Abstract:

Silvicultural canopy gaps are emerging as an alternative management tool to accelerate development of complex forest structure in young, even-aged forests of the Pacific Northwest. I investigated patterns of nitrogen (N) availability along transects through 0.1 and 0.4 ha silvicultural gaps in three 50-70 year old Douglas-fir forests of western...

Resource Type:

Masters Thesis

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in three 50-70 year old Douglas-fir forests of western Oregon. Six indices of N availability in

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Academic Affiliation

Forest Science4

Advisor

Perakis, Steven1
Puettmann, Klaus J.1
Radosevich, Steven1
Tappeiner, John C.1

Commencement Year

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Current results range from 2001 to 2009

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Committee Member

Hibbs, David[remove]4
Compton, Jana1
Cramer, Lori1
Fletcher, Rick1
Gartner, Barbara1
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Creator

Fahey, Robert T.1
Garrelts, Brennan T.1
Poage, Nathan Jeremy1
Thiel, Aaron L.1

Date

Date range begin – Date range end

Current results range from 2000 to 2008

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Decade

2000-2009[remove]4

Degree Field

Forest Science4

Degree Level

Master's3
Doctoral1

Degree Name

Master of Science (M.S.)3
Doctor of Philosophy (Ph.D.)1

File Format

application/pdf2

Language

English [eng]4

License

All rights reserved3

Non-Academic Affiliation

Oregon State University. Graduate School4

Peer Reviewed

No4

Resource Type

Masters Thesis3
Dissertation1

Rights Statement

In Copyright3
Copyright Not Evaluated1

Subject

Forest canopy gaps -- Oregon, Western2
Douglas fir -- Ecology -- Oregon1
Douglas fir -- Ecology -- Oregon -- H.J. Andrews Experimental Forest1
Douglas fir -- Soils -- Nitrogen content -- Oregon, Western1
Douglas fir -- Thinning -- Oregon, Western1
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