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Filtering by: Creator Nelson, Esther H. Remove constraint Creator: Nelson, Esther H. Committee Member Liston, Aaron Remove constraint Committee Member: Liston, Aaron Non-Academic Affiliation Oregon State University. Graduate School Remove constraint Non-Academic Affiliation: Oregon State University. Graduate School

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Reproductive isolation and interspecific hybridization in the threatened species, Sidalcea nelsoniana

Creator:

Gisler, Steven D.

Abstract:

In addition to its longstanding recognition as an influential evolutionary process, interspecific hybridization is increasingly regarded as a potential threat to the genetic integrity and survival of rare plant species, manifested through gamete wasting, increased pest and disease pressures, outbreeding depression, competitive exclusion, and genetic assimilation. Alternatively, hybridization has also...

Resource Type:

Masters Thesis

Full Text:

threats posed by hybridization with the weedy annual sunflower, H. annuus, which has dramatically
Butterflies of the H.J. Andrews Experimental Forest : biological inventory and ecological analysis

Creator:

Ross, Dana N. R.

Abstract:

A biological inventory of the butterflies of the H. J. Andrews Experimental Forest [HJA] in Linn/Lane County, Oregon was conducted during 1994 and 1995. It was the first comprehensive survey of HJA butterflies for the site and serves as a baseline for future butterfly research. A detailed ecological account is...

Resource Type:

Masters Thesis

Full Text:

Master of Science in Entomology presented on October 31, 2003. Butterflies of the H. J. Andrews
Exploiting Hordeum vulgare subsp. spontaneum genetic resources : diversity analysis and germplasm development

Creator:

Matus, Iván Ariel

Abstract:

Wild barley (Hordeum vulgare subsp. spontaneum) could be a source of useful genes for improving cultivated barley. The useful genes present in Hordeum vulgare subsp. spontaneum may be new alleles at described loci, or these may be entirely new genes in the sense that there is limited allelic variation at...

Resource Type:

Dissertation

Full Text:

substitution lines (RCSLs) from H. vulgare subsp. spontaneum/H. vulgare subsp. vulgare (Caesarea 26- 24
The Oregon Coastal Subprovince, a new biogeographic subprovince for primary freshwater fishes in Oregon

Creator:

Kettratad, Jes

Abstract:

The Pacific Northwest has a relatively low diversity of primary freshwater fishes with most of the endemism and diversity in the Columbia River and Klamath River. However, the Oregon Coastal Subprovince defined as the coastal rivers from Miami River in the north to Sixes River in the south, has a...

Resource Type:

Dissertation

Full Text:

Catostomidae and order Cypriniformes (Nelson, 1994). There are about 23 currently recognized species of
Development and use of molecular tools in Fragaria

Creator:

Njuguna, Wambui

Abstract:

This dissertation describes the application and development of molecular tools that have great potential for use in studying variation in strawberry germplasm. The first study evaluated 91 microsatellite (simple sequence repeat, SSR) markers for transferability in 22 Fragaria species and their utility in fingerprinting octoploid strawberries. Out of the transferable...

Resource Type:

Dissertation

Full Text:

Dossett, Kahraman Gurcan, Vidyasagar, Sathuvalli, Esther Uchendu, and Sugae Wada for their friendship
Phylogeography and population structure of least terns (Sterna antillarum)

Creator:

Draheim, Hope M.

Abstract:

Historically, least terns (Sterna antillarum) were one of the most common tern species in North America. However, population declines have resulted from direct and indirect anthropogenic pressures on their breeding and foraging habitat. Three subspecies of least terns have been described within the United States: California least tern (S. a....

Resource Type:

Masters Thesis

Full Text:

of haplotypes, haplotype diversity (h), and nucleotide diversity (π) for each breeding area
Systematic, genomic, and transcriptomic analysis of mycoparasitic Tolypocladium species and their Elaphomyces hosts

Creator:

Quandt, C. Alisha

Abstract:

Fungi in the genus Tolypocladium are diverse in their host associations, but the predominant ecologies include parasites of the ectomycorrhizal genus Elaphomyces and pathogens of insects. The aim of this dissertation research is to examine the evolution of these fungi and their host associations. To accomplish this several lines of...

Resource Type:

Dissertation
Riparian and adjacent upslope beetle communities along a third order stream in the western Cascade Mountain Range, Oregon

Creator:

Brenner, Gregory John

Abstract:

Monitoring wildlife habitats has become important to forest ecosystem management because it provides valuable information about the response of forests and their species to harvest practices, impacts from recreational use, conservation efforts, and natural and human-caused disturbances. Monitoring is a complex task that requires a variety of abiotic and biotic...

Resource Type:

Dissertation

Full Text:

are influenced by perturbation (Watson et al. 1982, Brown 1991, Nelson and Andersen 1994, New 1993
Systematics, phylogeny, and biogeography of the hysterangiales and related taxa (Phallomycetidae, Homobasidiomycetes)

Creator:

Hosaka, Kentaro

Abstract:

Monophyly of the gomphoid-phalloid clade was confirmed based on multigene phylogenetic analyses. Four major subclades (Hysterangiales, Geastrales, Gomphales and Phallales) were also demonstrated to be monophyletic. The interrelationships among the subclades were, however, not resolved, and alternative topologies could not be rejected statistically. Nonetheless, most analyses showed that the Hysterangiales...

Resource Type:

Dissertation

Full Text:

!. Biol. Evol. 14: 733-740. Cunningham, G. H. 1926. A new genus of the Hysterangiaceae. Trans. N. Z. Inst
Factors affecting establishment and germination of upland prairie species of conservation concern in the Willamette Valley, Oregon

Creator:

Jones, Katherine D.

Abstract:

Identifying mechanisms that determine who lives and dies is the first step in developing successful restoration techniques for rare species and endangered habitats. We studied interactions that affect establishment of native plant forbs of conservation concern at the seedling stage to support the theoretical basis for restoration activities in Pacific...

Resource Type:

Masters Thesis

Full Text:

. Zika, and J. K. Nelson. 1997. Patterns of rarity in the Oregon flora: implications for conservation

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Academic Affiliation

Botany and Plant Pathology5
Fisheries and Wildlife3
Crop and Soil Science2
Entomology1
Horticulture1
more Academic Affiliations »

Advisor

Spatafora, Joseph W.2
Bassil, Nahla V.1
Denver, Dee R.1
Douglas, Markle1
Haig, Susan M.1
more Advisors »

Commencement Year

Commencement Year range begin – Commencement Year range end

Current results range from 1998 to 2017

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Committee Member

Liston, Aaron[remove]14
Parke, Jennifer2
Arp, Daniel J.1
Boucot, Arthur1
Breen, Patrick1
more Committee Members »

Creator

Bellis, Emily S.1
Brenner, Gregory John1
Bronaugh, Whitcomb Meade1
Draheim, Hope M.1
Garcia de los Santos, Gabino1
more Creators »

Date

Date range begin – Date range end

Current results range from 1997 to 2017

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Decade

2010-20195
2000-20097
1990-19992

Degree Field

Botany and Plant Pathology5
Crop Science2
Entomology2
Fisheries Science2
Horticulture1
more Degree Fields »

Degree Level

Doctoral10
Master's4

Degree Name

Doctor of Philosophy (Ph.D.)10
Master of Science (M.S.)4

File Format

application/pdf2

Language

English [eng]14

License

All rights reserved11

Non-Academic Affiliation

Oregon State University. Graduate School[remove]14

Peer Reviewed

No13

Resource Type

Dissertation10
Masters Thesis4

Rights Statement

In Copyright11
Copyright Not Evaluated3

Subject

Anabantidae -- South Africa -- Genetics1
Anabantidae -- South Africa -- Phylogeny1
Anabantidae -- Variation -- South Africa1
Ascomycetes1
Barley -- Breeding1
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