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Filtering by: Creator Pacific Southwest Forest and Range Experiment Station (Berkeley, Calif.) Remove constraint Creator: Pacific Southwest Forest and Range Experiment Station (Berkeley, Calif.) Decade 1990-1999 Remove constraint Decade: 1990-1999 Resource Type Dissertation Remove constraint Resource Type: Dissertation

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Fescue taxonomy in the Pacific coast states

Creator:

Wilson, Barbara L.

Abstract:

Accurate taxonomy is essential to preservation and management of native grasses. Four problems in fescue taxonomy were investigated: the identity of the native fescue that dominates western Oregon and Washington prairies, the relationship of native Festuca roemeri to closely related grasses, the status of F. howellii and F. washingtonica, and...

Resource Type:

Dissertation

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keys were provided for identifying fertile or sterile fescues and ryegrasses of the Pacific coast
Multiobjective model of the Pacific whiting fishery in the United States

Creator:

Enríquez Andrade, Roberto R.

Abstract:

Pacific whiting (Merluccius productus) is commercially and ecologically one of the most important fishery resources in the Pacific coast of the United States. The fishery is currently going through a period of rapid and profound transformation that could cause a substantial redistribution of benefits among domestic users. Benefits from the...

Resource Type:

Dissertation

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Scope and Limitations of Vector Optimization Models 9 2 THE PACIFIC WHITING FISHERY 11 2.1
Evolution and risk in conservation of Pacific salmon

Creator:

Currens, Kenneth P.

Abstract:

Identifying appropriate units for conservation requires knowledge of evolutionary patterns and risks of managing at different geographical and genetic scales. I examined genetic diversity at different geographical scales among 11,400 rainbow trout (Oncorhynchus mykiss) from 243 locations in 13 major river basins throughout much of their range and among coho...

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Dissertation

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much of their range and among coho salmon (0. kisutch) from 31 watersheds in Oregon, Washington, and
The impact of grazing on forage quantity, quality and foliar cover of the herbaceous vegetation in the Mamora Cork Oak Forest, Morocco

Creator:

Mejjati-Alami, Mohammed

Abstract:

This research was conducted in the Mamora cork oak forest of Morocco to: (1) Describe the impacts of sheep grazing (none, 35% use, 70% use) in March, April, May and June of 1987 and 1988 on seasonal forage production; (2) evaluate the effects of these factors on annual changes in...

Resource Type:

Dissertation

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Range and the Sierra Foothills Range Field Station in California. The most striking response of these
Taxomony and mycorrhizal ecology of the desert truffles in the genus Terfezia

Creator:

Alsheikh, Abdulmagid M.

Abstract:

Mycorrhizal fungi in arid and semiarid rangelands have received little study in southwest Asia and north Africa, although they are important in food production and rangeland productivity. The desert truffles of the genera Terfezia and Tirmania form fruiting-bodies and mycorrhizae with rangeland plants. This thesis treats the taxonomy and the...

Resource Type:

Dissertation

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. Department of Agriculture, Forest Service, Pacific Northwest Research Station, Forestry Sciences Laboratory
Spectroscopy of biophysical, physiological and pathological responses of plant germplasm

Creator:

Li, Ning

Abstract:

Imaging spectra of plant tissues yield considerable potential and useful information for basic studies and agriculture practice. We constructed an imaging spectrophotometer with spectral range from 400 nm to 1100 nm, which was used to study various physiological events of plant germplasm: location of bundle sheath and mesophyll cells in...

Resource Type:

Dissertation

Full Text:

arrangement of useful advice and discussions on a broad range of subjects, particularly: Prof. Bent Petersen
A paradigmatic framework for flight safety

Creator:

Routledge, Garry L.

Abstract:

Statistically, travel by air is one of the safest forms of transportation. Yet we continue to experience aviation tragedies. Do we fully understand flight safety or is there another way of looking at the problem? In this work a new way of approaching the question of flight safety is developed,...

Resource Type:

Dissertation

Full Text:

of the Thesis of Garry L. Rout ledge for the degree of Doctor of Philosophy in Industrial and
Germination and seedling establishment of spiny hopsage (Grayia spinosa [Hook.] Moq.)

Creator:

Shaw, Nancy L. (Nancy Lynn), 1947-

Resource Type:

Dissertation

Full Text:

of financial support provided by the USDA Forest Service, Intermountain Research Station and
Taxonomy and evolution of the Orthotyline genus Lopidea (Heteroptera: miridae)

Creator:

Asquith, Adam

Abstract:

The genus Lopidea Uhler is revised for America north of Mexico. The relationship of Lopidea to other orthotyline genera is discussed and it is proposed that the genus Ilnacora Reuter is the sister group of Lopidea. Forty-eight species of Lopidea are recognized in North America, one of which is described...

Resource Type:

Dissertation

Full Text:

limits of the variation of these structures in populations and throughout the range of species need to be
The effects of biomechanical and ecological factors on population and community structure of wave-exposed, intertidal macroalgae

Creator:

Blanchette, Carol A.

Abstract:

I examined the biomechanical factors that influence the sizes of intertidal macroalgae by studying a population of Fucus gardneri at Fogarty Creek Point, OR. I constructed a mathematical model to predict optimal sizes and probabilities of survival for Fucus under conditions of high and low wave exposure. Predicted optimal sizes...

Resource Type:

Dissertation

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them and Emily Bell for their help and hospitality on my many trips to Pacific Grove, CA. Thanks to

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Academic Affiliation

Botany and Plant Pathology3
Civil Engineering1
Crop and Soil Science1
Education1
Entomology1
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Advisor

Bedell, Thomas E.1
Daley, Larry S.1
Funk, Kenneth H. Ii1
Grabe, Don F.1
Haverson, Wayne W.1
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Commencement Year

Commencement Year range begin – Commencement Year range end

Current results range from 1991 to 1999

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Committee Member

Righetti, Timothy L.2
Steiner, Jeffrey2
Appleby, Arnold1
Arp, Daniel J.1
Bailey, George1
more Committee Members »

Creator

Alsheikh, Abdulmagid M.1
Asquith, Adam1
Bennett, Judith N1
Blanchette, Carol A.1
Currens, Kenneth P.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]13

Degree Field

Botany and Plant Pathology2
Civil Engineering1
Crop Science1
Education1
Entomology1
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Degree Level

Doctoral13

Degree Name

Doctor of Philosophy (Ph.D.)12
Doctor of Education (Ed.D.)1

Language

English [eng]13

Non-Academic Affiliation

Oregon State University. Graduate School13

Peer Reviewed

No13

Resource Type

Dissertation[remove]13

Rights Statement

Copyright Not Evaluated13

Subject

Actinorhizas1
Aeronautics -- Safety measures1
Aircraft accidents1
Arid regions plants -- West (U.S.)1
Ceanothus -- Ecology1
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