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Filtering by: Has journal Current Biology Remove constraint Has journal: Current Biology Academic Affiliation Rangeland Resources Remove constraint Academic Affiliation: Rangeland Resources Committee Member Doescher, Paul Remove constraint Committee Member: Doescher, Paul

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Fire effects on vegetation diversity, structure, and successional dynamics in shrub-steppe and mixed conifer environments of the Hells Canyon, Idaho

Creator:

Havlina, Douglas William

Abstract:

The effects of fire severity on post-fire succession and shrub demography were quantified in shrub-steppe grasslands and subalpine forests in the Hells Canyon of the Payette National Forest, Idaho. Following the 1988 Eagle Bar Fire, species frequency, community diversity, fire adaptations, and stand ages were quantified at 12 plots in...

Resource Type:

Masters Thesis
Vegetation composition and response to fire of native Willamette Valley wetland prairies

Creator:

Pendergrass, Kathy L. (Connelly)

Abstract:

Fires set by Native Americans were important in shaping and maintaining Willamette Valley prairie plant communities. With fire exclusion after Euro-American settlement in the 1840's, composition of the remaining prairies shifted toward shrub and tree dominance with a concomitant decline in endemic prairie plant populations. I hypothesize that by restoring...

Resource Type:

Masters Thesis

Full Text:

material is characteristic of current Willamette Valley soils (Orr et al. 1992). Other soil deposits have
Growth characteristics and site potentials of perennial grass species

Creator:

Borman, Michael M.

Abstract:

In this study I assessed the potentials of selected, established perennial grasses to maintain site occupancy in the foothills ecosystem of the Rogue River Valley of southwest Oregon which is currently dominated by a variety of annual plants. The first evaluation compared growth curves of the perennial grasses and contrasted...

Resource Type:

Dissertation
Understory vegetation response and nitrogen cycling following cutting of western juniper

Creator:

Bates, Jonathan D.

Abstract:

Since the late 1880's western juniper has expanded in range and increased in density in sagebrush-bunchgrass, riparian, and forested plant communities of the Pacific Northwest. Succession to western juniper woodland has been shown to reduce the productivity and diversity of the understory component, result in concentration of soil nutrients beneath...

Resource Type:

Dissertation

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current distribution (Thompson, 1990; Wigand and Nowak, 1992). Warmer, drier conditions beginning in

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Academic Affiliation

Rangeland Resources[remove]4

Advisor

Kauffman, J. Boone1
Krueger, William C.1
Miller, Richard F.1
Svejcar, Tony1

Commencement Year

Commencement Year range begin – Commencement Year range end

Current results range from 1990 to 1997

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Committee Member

Doescher, Paul[remove]4
Davis, Steven1
Eddleman, Lee1
Eisgruber, Ludwig1
Frakes, Rod1
more Committee Members »

Creator

Bates, Jonathan D.1
Borman, Michael M.1
Havlina, Douglas William1
Pendergrass, Kathy L. (Connelly)1

Date

Date range begin – Date range end

Current results range from 1989 to 1996

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Decade

1990-19993
1980-19891

Degree Field

Rangeland Resources4

Degree Level

Doctoral2
Master's2

Degree Name

Doctor of Philosophy (Ph.D.)2
Master of Science (M.S.)2

File Format

application/pdf1
pdf1

Language

English [eng]4

License

All rights reserved1

Non-Academic Affiliation

Oregon State University. Graduate School4

Peer Reviewed

No4

Resource Type

Dissertation2
Masters Thesis2

Rights Statement

Copyright Not Evaluated2
In Copyright2

Subject

Annuals (Plants) -- Growth1
Fire ecology -- Hells Canyon (Idaho and Or.)1
Fire ecology -- Oregon -- Willamette River Valley1
Forest fires -- Environmental aspects -- Hells Canyon (Idaho and Or.)1
Grasses -- Growth1
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