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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 1960-1969 Remove constraint Decade: 1960-1969 Resource Type Dissertation Remove constraint Resource Type: Dissertation

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Vegetation changes of communities containing medusahead (Taeniatherum asperum (Sim.) Nevski) following herbicide, grazing, and mowing treatments

Creator:

Turner, Robert Bruce

Abstract:

Studies were conducted from 1962 to 1966 to investigate the effectiveness of several practices in manipulating medusahead (Taeniatherum asperum (Sim. ) Nevski) infested and/or dominated ecosystems by releasing competition in favor of perennial grasses. Several herbicide treatments were evaluated for selective control of medusahead and cheatgrass (Bromus tectorum L. )...

Resource Type:

Dissertation

Full Text:

! As a means of combating the medusahead problem, the Oregon Agricultural Experiment Station and the
Revegetation in the 1914-1915 devastated area of Lassen Volcanic National Park

Creator:

Bailey, Warren Hutchinson, 1914-

Abstract:

At the time of the eruptions of Lassen Peak in 1914-1915, an area of vegetation along the east slope of the mountain approximately 1 1/4 miles wide and four miles long was destroyed. Except for a few surviving trees, all vegetation was destroyed. A study of the revegetation of this...

Resource Type:

Dissertation

Full Text:

Forest Service lookout station. A trail existed and the mountain was often climbed by hikers
Subsurface currents off the Oregon coast

Creator:

Stevenson, Merritt R.

Resource Type:

Dissertation

Full Text:

the south or southwest; 3 a northward surface current nearshore develops and is called the
Temperature effects on the growth of Douglas-fir seedlings

Creator:

Wommack, Donald Everett

Abstract:

This study was undertaken to determine the effects of different chilling treatments during the dormant season upon growth of Douglas-fir seedlings0 In addition it was planned to determine whether seedlings native to various geographic areas differ in their chilling requirements0 The hypotheses were advanced, based on previous studies, that chilling...

Resource Type:

Dissertation

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lower elevations. Experiments II and III differed from Experiment I since the dormant seedlings had
A critical analysis of wildlife conservation in Oregon

Creator:

Rymon, Larry Maring

Abstract:

This analysis is the study of Oregon's wildlife resources from the period prior to white settlement up to the present time, including critical projections, based on present trends and expected conditions for both human and wildlife populations in the state up to the year 2010. Prior to white settlement Oregon...

Resource Type:

Dissertation

Full Text:

. The National and State Wildlife refuges ix; Oregon which benefit waterfowl. 318 13. Major forest
A biosystematic study in the genus Aster, section Aster, in western North America

Creator:

Dean, Milton Lee

Abstract:

A biosystematic investigation was undertaken in 15 species and three subspecies of the genus Aster, in western North America. Previous studies had been based entirely on external morphological features, and it was believed that much could be learned about the natural affinities of the taxa by exploring their cytological and...

Resource Type:

Dissertation

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biosystematic investigation was undertaken in 15 species and three subspecies of the genus Aster, in western
Heat as a factor in germination of seeds of Ceanothus velutinus var. laevigatus T. & G.

Creator:

Gratkowski, H.

Resource Type:

Dissertation

Full Text:

who have helped make this possible. First, the Pacific Horthwest Forest and Range Experiment Station
Heat as a factor in germination of seeds of Ceanothus velutinus var. laevigatus T. & G.

Creator:

Gratkowski, H.

Resource Type:

Dissertation

Full Text:

possible. First, the Pacific Northwest Forest and Range Experiment Station of the B*. S. Forest Service
A biosystematic study of some North American species of Agrostis L. and Podagrostis (Griseb.) Scribn. & Merr.

Creator:

Carlbom, Curt Gerald, 1932-

Abstract:

A taxonomic investigation was made of 24 taxa belonging to the section Trichodium (Michx.) Trin., of Agrostis, and the genus Podagrostis. Experimental methods were employed, including: uniform garden culture of transplants and plants grown from seeds collected in natural populations; breeding studies; physiological and phenological investigations; cytological studies; ecological studies...

Resource Type:

Dissertation

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species of Agrostis from Alaska and the northern Pacific Coast of North Amer- ica; Bongard (1833), and
Nearctic sawflies I, the adults and larvae of the subfamily Blennocampinae (Hymenoptera: Tenthredinidae)

Creator:

Smith, David R.

Abstract:

Seventy-two species of Blennocampinae in 21 genera and six tribes are known from the Nearctic region. The adults and known larvae of all species and genera are keyed, described and illistrated. A definition of the subfamily, a review of previous work, a table of host-plant associations, and a discussion of...

Resource Type:

Dissertation

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, Texas A. and M. University, College Station; George W. Byers, University of Kansas, Lawrence; Edwin

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Academic Affiliation

Botany and Plant Pathology3
Botany2
Agricultural Economics1
Education1
Entomology1
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Advisor

Chilcote, W. W.3
Chambers, Kenton L.2
Lattin, John D.1
Morris, R. J.1
Pattullo, June G.1
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Commencement Year

Commencement Year range begin – Commencement Year range end

Current results range from 1960 to 1969

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Committee Member

Chilcote, William W.1
Dickinson, Ernest M.1
Youngberg, Chester T.1

Creator

Gratkowski, H.2
Bailey, Warren Hutchinson, 1914 1
Carlbom, Curt Gerald, 1932 1
Dean, Milton Lee1
Owens, Thomas Richard1
more Creators »

Date

Date range begin – Date range end

Current results range from 1960 to 1969

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Decade

1960-1969[remove]12

Degree Field

Botany4
Agricultural Economics1
Botany and Plant Pathology1
Education1
Entomology1
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Degree Level

Doctoral12

Degree Name

Doctor of Philosophy (Ph.D.)11
Doctor of Education (Ed.D.)1

Language

English [eng]12

Non-Academic Affiliation

Oregon State University. Graduate School12

Peer Reviewed

No12

Resource Type

Dissertation[remove]12

Rights Statement

Copyright Not Evaluated12

Subject

Buckhorn -- Seeds2
Ceanothus velutinus2
Plant ecology2
Agrostis1
Coasts -- Oregon1
more Subjects »

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