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Filtering by: Committee Member Cromack, Kermit Remove constraint Committee Member: Cromack, Kermit Decade 1990-1999 Remove constraint Decade: 1990-1999

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Effects of wood species and prior fungal exposure on the feeding habits of the dampwood termite Zootermopsis angusticollis

Creator:

Mankowski, Mark Edward

Abstract:

The effects of natural preconditioning (source wood), wood species, and previous exposure of wood to two types of fungi on the feeding rates and protozoa survival in the Pacific dampwood termite Zootermopsis angusticollis (Isoptera: Termospidae) were examined under laboratory conditions. Termites were exposed to four wood species that had been...

Resource Type:

Masters Thesis
Biology, epidemiology, and biological and chemical control of Phytophthora vignae

Creator:

Fernando, W. Gerard Dilantha

Abstract:

Phytophthora vignae, causal agent of stem and root rot of cowpea (Vigna unguiculata), was reported for the first time in Sri Lanka. The pathogen was found in cowpea field soils from 3 of 5 geographic regions sampled. Only one site however, had plants exhibiting disease symptoms. Of the eight cowpea...

Resource Type:

Dissertation
Growth responses of Douglas-fir (Pseudotsuga menziesii [Mirb.] Franco) to defoliation

Creator:

Osman, Khalid Amir

Abstract:

The effect of defoliation intensity and season on Douglas-fir growth were studied in three replications in the Siuslaw National Forest during 1988-1990. Four intensities of defoliation were applied once in either spring or summer 1988. Stem diameter and canopy area were linearly inversely proportional to the level of defoliation. Defoliation...

Resource Type:

Dissertation
Microbiology of soil aggregates recovered from different crop management systems

Creator:

Mendes, Iêda de Carvalho

Resource Type:

Dissertation
Fall applied ethephon and temperature effects on flower bud growth and ovule longevity in Prunus domestica

Creator:

Moreno-Simunovic, Yerko M.

Abstract:

In the Pacific Northwest some prune cultivars often exhibit inconsistent fruit set. Several factors have been associated with this characteristic. Temperature, genotype and boron content are among the most frequently mentioned. Studies were conducted to determine the effect of fall ethephon application on flower bud growth and ovule longevity in...

Resource Type:

Masters Thesis
Contending with risk in the seafood processing industry : a bioeconomic portfolio analysis of the Pacific whiting fishery

Creator:

Tuininga, Chris R

Abstract:

Since harvest levels of many of the world's fisheries are not likely to increase in the foreseeable future, resource managers and seafood processors need to develop improved strategies to maximize the utilization and benefits of current catches. In addition to increasing utilization and benefits, seafood processors are subject to the...

Resource Type:

Masters Thesis
Investigations of runoff production and sedimentation on forest roads

Creator:

Wemple, Beverley C.

Abstract:

Forest roads constructed in steep mountain landscapes have been associated with a number of effects on hydrologic and geomorphic processes. This research examined the effects of forest roads on the flow of water and sediment in drainage basins in the Cascade range of western Oregon. A study conducted at the...

Resource Type:

Dissertation
Bird communities in managed conifer stands in the Oregon Cascades : habitat associations and nest predation

Creator:

Vega, Robyn M. S.

Abstract:

Green-tree retention is being implemented on state and federal lands in Oregon. Silvicultural prescriptions with tree and snag retention are thought to mimic natural disturbance patterns in the Pacific Northwest more closely than traditional silvicultural practices, which reduce structural complexity. The effects of green-tree retention on native bird species in...

Resource Type:

Masters Thesis
Meta-sedimentary bedrock as an alternative source of water for forest ecosystems in a Mediterranean climate

Creator:

Zwieniecki, Maciej A.

Abstract:

Evaluation of meta-sedimentary bedrock as a source of stored water available to plants in a mediterranean climate is presented based on: root length distribution (RLD), root morphology, rock water holding capacity and seasonal pattern of water depletion. Studies were performed in southwestern Oregon under young stands of whiteleaf manzanita, ponderosa...

Resource Type:

Dissertation
Effects of prescribed fire and silvicultural activities on fuel mass and nitrogen redistribution in Pinus ponderosa ecosystems of central Oregon

Creator:

Shea, Ronald W.

Resource Type:

Masters Thesis

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Academic Affiliation

Forest Science7
Rangeland Resources2
Agriculture and Resource Economics1
Botany and Plant Pathology1
Crop and Soil Science1
more Academic Affiliations »

Advisor

Perry, David A.2
Bottomley, Peter J.1
Boyle, James R.1
Hansen, Andrew J.1
Jones, Julia Allen1
more Advisors »

Commencement Year

Commencement Year range begin – Commencement Year range end

Current results range from 1991 to 2000

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Committee Member

Cromack, Kermit[remove]15
Myrold, Dave2
Baham, John1
Boersma, Larry1
Bottomley, Peter1
more Committee Members »

Creator

Fernando, W. Gerard Dilantha1
Geyer, Eric A.1
Mankowski, Mark Edward1
Mendes, Ieda de Carvalho1
Moreno Simunovic, Yerko M.1
more Creators »

Date

Date range begin – Date range end

Current results range from 1990 to 1999

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Decade

1990-1999[remove]15

Degree Field

Forest Science7
Rangeland Resources2
Agricultural and Resource Economics1
Botany and Plant Pathology1
Entomology1
more Degree Fields »

Degree Level

Master's9
Doctoral6

Degree Name

Master of Science (M.S.)9
Doctor of Philosophy (Ph.D.)6

Language

English [eng]15

Non-Academic Affiliation

Oregon State University. Graduate School15

Peer Reviewed

No13

Resource Type

Masters Thesis9
Dissertation6

Rights Statement

Copyright Not Evaluated15

Subject

Douglas fir -- Oregon -- Growth2
Forest soils2
Soils -- Carbon content2
Birds -- Effect of logging on -- Oregon1
Birds -- Habitat -- Cascade Range1
more Subjects »

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