Index Catalog // ScholarsArchive@OSU

Yosemite region nitrogen deposition and patterns in the composition of lichen communities

Creator:: Hutten, Martin
Abstract:: This dissertation describes patterns in epiphytic macrolichen community composition along a nitrogen deposition gradient in the Yosemite region of the Sierra Nevada in California. This region is part of the largest federal air quality Class 1 designated air-shed in the western United States, covering the entire crest of the Sierra...
Resource Type:: Dissertation
Full Text:: would like to thank my graduate committee members, Linda Geiser, Pat Muir, and Steve Perakis for their

Yield responses of invasive grasses to carbon doses

Creator:: Brunson, Jessi L.
Abstract:: The sagebrush steppe ecosystem of the northern Great Basin is severely degraded and continues to decline due in large part to the invasive, non-native annual grasses Bromus tectorum L. (cheatgrass) and Taeniatherum caput-medusae (L.) Nevski (medusahead). Restoration of invasive-dominated areas is difficult, but can be enhanced by adding a carbon...
Resource Type:: Masters Thesis
Full Text:: Steve Perakis for lending his expertise in soil nutrient cycling, Pat Muir for always thinking about

Unearthing the Cretaceous Diversification of Cornales

Creator:: Atkinson, Brian A.
Abstract:: The order Cornales (dogwoods) is the earliest diverging lineage within the most diverse group of flowering plants, the asterids (>80,000 species). Although molecular phylogenetics have significantly improved our understanding of cornalean systematics, early phylogenetic relationships remain uncertain due to an initial rapid radiation. The fossil record of Cornales is extensive...
Resource Type:: Dissertation
Full Text:: Beard, Dr. Dirk Meckert, Rick Ross, Ludo Le Renard, Dr. Nathan Jud, Ashley Klymiuk, Steve Karafit

The spatial distribution of wood-nesting ants in the central Coast Range of Oregon

Creator:: Nielsen, Gary R. (Gary Richard), 1956-
Resource Type:: Dissertation
Full Text:: history. Many thanks to Steve Shattuck for his expert identification of the ants collected and for the

The location, composition, and structure of old-growth forests of the Oregon coast range

Creator:: Juday, Glenn Patrick
Resource Type:: Dissertation
Full Text:: . John Radosta of the U.S. Bureau of Land Management; Lee Aggers, Oregon State Forestry Department

The influence of prescribed fire on the rare endemic plant Delphinium pavonaceum (Peacock larkspur)

Creator:: McKernan, Brie-Anne
Abstract:: In the wetland prairie of William L. Finley National Wildlife Refuge (FNWR) in western Oregon, we investigated the response of Delphinium pavonaceum Ewan (peacock larkspur, Ranunculaceae), an endangered perennial forb, to four unreplicated dormant season fire regimes of 0, 2, 4, or 10 fires that were applied over a 12-year...
Resource Type:: Masters Thesis
Full Text:: Amsberry and Steve Gisler also provided useful advice. Deborah Clark, Carolyn Menke, Pamela McKernan, Matt

The Influence of Nitrogen Fertility on Hop Quality, Pest Management, and the Stability of Biological Control

Creator:: Iskra, Anne E.
Abstract:: A multi-year field study was conducted in Oregon and Washington to evaluate the influence of nitrogen fertilization rate and timing on cone quality, nitrate accumulation in cones, severity of powdery mildew (caused by Podosphaera macularis), arthropod pests, and the stability of conservation biological control of the twospotted spider mite (Tetranychus...
Resource Type:: Masters Thesis
Full Text:: patient in guiding her through the beginnings of graduate school. A special thank you to Steve Massie

The fate of organic and inorganic nitrogen inputs in an old-growth forest of the central Oregon Cascade Range

Creator:: Holub, Scott M.
Abstract:: Forests in the Pacific Northwest receive very little nitrogen through atmospheric deposition and thus studying the nitrogen cycle in this region can provide insights into how the unpolluted nitrogen cycle functions. I examined the fate of organic nitrogen versus inorganic nitrogen and the effect of tamlins on N retention by...
Resource Type:: Dissertation
Full Text:: , Art McKee, S. Michal Jazwinski, Yuriko Yano, Teresa Sawyer, Steve Perakis, Donald Armstrong, Charlie

Susceptibility of Pacific yew (Taxus brevifolia Nutt.) to Phytophthora lateralis

Creator:: Murray, Marion S.
Abstract:: In 1991 Pacific yew (Taxus brevifolia Nutt.) was reported as a new host for Phytophthora lateralis Tucker and Milbrath which is an aggressive root rot pathogen thought previously to be specific to Port-Orford-cedar. This study was designed to compare the pathogenicity of P. lateralis on the two hosts, and to...
Resource Type:: Masters Thesis
Full Text:: , in particular Greg DeNitto and John Kliejunas. Thanks go to Nick Wheeler and Will Littke at

Suppression of take-all [Gaeumannomyces graminis (Sacc.) Arx & Olivier var. tritici Walker] of wheat (Triticum aestivum L.) by banded ammonium and chloride fertilizers

Creator:: Halsey, Mark Evan
Resource Type:: Dissertation
Full Text:: statistical analyses, while Steve Born and Renee Lee gave valuable technical assistance. I want to thank them

ScholarsArchive@OSU

Yosemite region nitrogen deposition and patterns in the composition of lichen communities

Yield responses of invasive grasses to carbon doses

Unearthing the Cretaceous Diversification of Cornales

The spatial distribution of wood-nesting ants in the central Coast Range of Oregon

The location, composition, and structure of old-growth forests of the Oregon coast range

The influence of prescribed fire on the rare endemic plant Delphinium pavonaceum (Peacock larkspur)

The Influence of Nitrogen Fertility on Hop Quality, Pest Management, and the Stability of Biological Control

The fate of organic and inorganic nitrogen inputs in an old-growth forest of the central Oregon Cascade Range

Susceptibility of Pacific yew (Taxus brevifolia Nutt.) to Phytophthora lateralis

Suppression of take-all [Gaeumannomyces graminis (Sacc.) Arx & Olivier var. tritici Walker] of wheat (Triticum aestivum L.) by banded ammonium and chloride fertilizers

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