Index Catalog // ScholarsArchive@OSU

The Impact of Surface Ocean Mixing on Phytoplankton Communities and Associated Carbon Pools

Creator:: VerWey, Brian J.
Abstract:: Deep mixing events in the ocean’s surface layer act as physical drivers of carbon export by detraining dissolved and particulate organic matter, including surface phytoplankton communities, to depth. Once removed from the sunlit surface ocean environment, phytoplankton accumulation rates are dependent on the relative contributions of loss processes, such as...
Resource Type:: Masters Thesis
Full Text:: for the degree of Master of Science in Botany and Plant Pathology presented on December 4, 2023

The Fungal Microbiome Associated with Grapevine Trunk Disease in Oregon Vineyards

Creator:: Zimmerman, Jessie
Abstract:: Grapevine Trunk Diseases (GTDs) are caused by a group of fungal pathogens that attack the xylem tissue of mature grapevines worldwide. In the past 30 years, their incidence has increased, both in emerging grape-producing regions, as well as those with an extended history of viticulture. In the same time span,...
Resource Type:: Masters Thesis
Full Text:: of Master of Science in Botany and Plant Pathology presented on September 7, 2023. Title: The Fungal

An Exploration of the Ecological and Geographical Variability of Rhizopus microsporus Clinical and Environmental Isolates

Creator:: Stairs, Brandon S.
Abstract:: Rhizopus microsporus is a globally ubiquitous opportunistic human and plant pathogen that is known to harbor endosymbiotic bacteria. Differences between populations of clinical and environmental R. microsporus isolates have yet to be assessed on a global scale. Whole-genome sequence data were used to explore fungal biology and to assess potential...
Resource Type:: Masters Thesis
Full Text:: Brandon Scott Stairs for the degree of Master of Science in Botany and Plant Pathology presented on August

Community Ecology and Population Genomics of Rhizopogon in the Madrean Sky Island Archipelago

Creator:: Piña Páez, Carolina G.
Abstract:: Anthropogenic induced climate change is predicted to alter distribution of existing plant populations. As plants migrate over space and time, populations often fragment and contract, affecting basic elements of population dynamics (e.g., population size, gene flow, genetic diversity, etc.). Little is known, however, how these impacts on plant species will...
Resource Type:: Dissertation
Full Text:: . Title: Community Ecology and Population Genomics of Rhizopogon in the Madrean Sky Island Archipelago

Inferring Patterns and Processes of Emergence in Clonal Phytophthora Epidemics using Population Genomic Approaches

Creator:: Cauldron, Nicholas C.
Abstract:: Oomycete and fungal pathogens threaten food, fiber, and forests around the world. With climate change, these pathogens are expected to emerge more frequently. Evolution can facilitate their emergence through mechanisms such as mutations that change or expand host range. Characterizing evolutionary mechanisms in plant pathogens will contribute to our ability...
Resource Type:: Dissertation
Full Text:: Phytophthora ramorum, the causal agent of sudden oak death and a threat to forests in the Western US and in

The Ecology and Epidemiology of Xanthomonas hortorum pv. carotae in Central Oregon Carrot Seed Production Systems

Creator:: Baldino, Katelyn D.
Abstract:: Xanthomonas hortorum pv. carotae (Xhc) is an epiphytic, plant pathogenic bacterium that causes the disease bacterial blight of carrot (Daucus carota subsp. sativus). Infection with Xhc can result in blighting of leaves and umbels and reduce quality and yield of carrot seed crops. Carrot production in the United States approaches...
Resource Type:: Masters Thesis
Full Text:: . Title: The Ecology and Epidemiology of Xanthomonas hortorum pv. carotae in Central Oregon Carrot Seed

Silviculture Impacts and Population Genomics of Coniferiporia sulphurascens, the Causal Agent of Laminated Root Rot

Creator:: McMurtrey, Shawn
Abstract:: Within the Pacific Northwest, USA, root diseases of conifers are a major forest health concern. These diseases are primarily caused by basidiomycete fungi. These fungal associates play a vital role in carbon sequestration but also have a significant negative economic impact within the timber industry. As a result, research on...
Resource Type:: Masters Thesis
Full Text:: McMurtrey for the degree of Master of Science in Botany and Plant Pathology presented on December 6, 2022

Epidemic Dynamics of Sudden Oak Death in the Forests of Oregon

Creator:: Carson, Adam
Abstract:: Sudden Oak Death (SOD) is a forest disease caused by the oomycete pathogen Phytophthora ramorum, and infects trees in the Western United States and Europe. This generalist pathogen can infect over 130 species of plants, and causes rapid mortality in tree species in the Fagaceae. Sexual reproduction is thought to...
Resource Type:: Masters Thesis
Full Text:: California and Oregon forest ecosystems. Frontiers in Ecology and the Environment. 1:197–204. Rizzo, D

New Tools for Managing Erysiphe necator: Rapid Sampling Approaches and an Exploration of Grower Opinions and Perspectives towards Collective Action and Information Transfer

Creator:: Lowder, Sarah R.
Abstract:: The scale of pest and disease dispersal is often larger than the scale of individual farms. Therefore, an individual grower’s response to pests and diseases can affect and is affected by their surrounding growing region. Individual growers are also not isolated, and engage in various forms of information gathering, sharing,...
Resource Type:: Dissertation
Full Text:: ABSTRACT OF THE DISSERTATION OF Sarah R. Lowder for the degree of Doctor of Philosophy in Botany and

Permineralized Mesozoic Moss Gametophytes and their Implications for Bryophyte Evolution

Creator:: Bippus, Alexander C.
Abstract:: Mosses (Phylum Bryophyta) are widely considered to be among the most ancient groups of land plants (embryophytes) and they are the second most speciose embryophyte phylum with ~13,000 extant species. Despite their diversity and antiquity, mosses have a limited fossil record, which primarily consists of gametophytes entombed in Cenozoic amber....
Resource Type:: Dissertation
Full Text:: and ecology relevant to taphonomy. Bryophytes are unusual in that the group has a deep evolutionary

ScholarsArchive@OSU

The Impact of Surface Ocean Mixing on Phytoplankton Communities and Associated Carbon Pools

The Fungal Microbiome Associated with Grapevine Trunk Disease in Oregon Vineyards

An Exploration of the Ecological and Geographical Variability of Rhizopus microsporus Clinical and Environmental Isolates

Community Ecology and Population Genomics of Rhizopogon in the Madrean Sky Island Archipelago

Inferring Patterns and Processes of Emergence in Clonal Phytophthora Epidemics using Population Genomic Approaches

The Ecology and Epidemiology of Xanthomonas hortorum pv. carotae in Central Oregon Carrot Seed Production Systems

Silviculture Impacts and Population Genomics of Coniferiporia sulphurascens, the Causal Agent of Laminated Root Rot

Epidemic Dynamics of Sudden Oak Death in the Forests of Oregon

New Tools for Managing Erysiphe necator: Rapid Sampling Approaches and an Exploration of Grower Opinions and Perspectives towards Collective Action and Information Transfer

Permineralized Mesozoic Moss Gametophytes and their Implications for Bryophyte Evolution

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