Index Catalog // ScholarsArchive@OSU

The epidemiology of sudden oak death in Oregon forests

Creator:: Peterson, Ebba K.
Abstract:: The phytopathogen Phytophthora ramorum (Werres, DeCock & Man in't Veld), causal agent of Sudden Oak Death (SOD) of oaks (Quercus spp.) and tanoaks (Notholithocarpus densiflorus syn. Lithocarpus densiflorus), is established in coastal forests of the western United States. Since the discovery of SOD in the Douglas-fir / tanoak forests of...
Resource Type:: Dissertation
Full Text:: : Everett M. Hansen The phytopathogen Phytophthora ramorum (Werres, DeCock & Man in’t Veld), causal

Phytophthora species and riparian alder tree damage in western Oregon

Creator:: Sims, Laura L.
Abstract:: The genus Phytophthora contains some of the most destructive pathogens of forest trees, including the most destructive pathogen of alder in recent times, Phytophthora alni. Alder trees were reported to be suffering from canopy dieback in riparian ecosystems in western Oregon, which prompted a survey of alder health and monitoring...
Resource Type:: Dissertation
Full Text:: Tree Damage in Western Oregon Abstract approved: Everett M. Hansen The genus Phytophthora

Pathogenicity of Phytophthora species from Oregon waterways

Creator:: Navarro, Sarah M.
Abstract:: Described as one of the most destructive pathogens of agricultural crops and forest trees, Phytophthora is a genus of microorganisms containing over 100 known species. Phytophthora alni has caused collar and root disease in alders throughout Europe and a form of the species has recently been isolated in North America....
Resource Type:: Masters Thesis
Full Text:: : Everett M. Hansen Described as one of the most destructive pathogens of agricultural crops and forest

Castilleja and Pedicularis are confirmed as telial hosts for white pine blister rust in whitebark pine ecosystems of Oregon and Washington

Creator:: Mulvey, Robin L.
Abstract:: The primary objective of this research was to determine if native species within the genera Castilleja and Pedicularis are naturally infected by white pine blister rust (Cronartium ribicola) in whitebark pine ecosystems of the Oregon and Washington Cascade Range. Secondary objectives were to monitor the phenology of aecial and telial...
Resource Type:: Masters Thesis
Full Text:: Whitebark Pine Ecosystems of Oregon and Washington. Abstract approved: Everett M. Hansen The

Benthic marine algae on Japanese tsunami marine debris – a morphological documentation of the species. Part 1 – The tsunami event, the project overview, and the red algae

Creator:: Hansen, Gayle I.
Abstract:: To determine the invasion threat to the NE Pacific of marine algae arriving on Japanese debris from the 2011 Great Tōhoku Earthquake and Tsunami, my colleagues and I took up the task of identifying the algal species on 42 of the most heavily fouled debris items that landed on the...
Resource Type:: Presentation
Full Text:: . Agardh G y (4) 41 Tsunamia transpacifica J. West, G. Hansen, T. Hanyuda et G. Zuccarello cpx. NP-P n

Benthic marine algae on Japanese tsunami marine debris – a morphological documentation of the species. Part 2 – The brown algae

Creator:: Hansen, Gayle I.
Abstract:: To determine the invasion threat to the NE Pacific of marine algae arriving on Japanese debris from the 2011 Great Tōhoku Earthquake and Tsunami, my colleagues and I identified the algal species on 42 of the most heavily fouled debris items that landed on the shores of Oregon and Washington...
Resource Type:: Presentation
Full Text:: Tsunami Marine Debris – a morphological documentation of the species Gayle I. Hansen (hansengi

Benthic marine algae on Japanese tsunami marine debris – a morphological documentation of the species. Part 3 - The green algae and cyanobacteria

Creator:: Hansen, Gayle I.
Abstract:: To determine the invasion threat to the NE Pacific of marine algae arriving on Japanese debris from the 2011 Great Tōhoku Earthquake and Tsunami, my colleagues and I identified the algal species on 42 of the most heavily fouled debris items that landed on the shores of Oregon and Washington...
Resource Type:: Presentation
Full Text:: Tsunami Marine Debris – a morphological documentation of the species Gayle I. Hansen (hansengi

The effects of Phytophthora ramorum stem inoculation on aspects of tanoak physiology and xylem function in saplings and seedlings

Creator:: Stamm, Elizabeth A.
Abstract:: Phytophthora ramorum, an oomycete plant pathogen, is the causal agent of sudden oak death, a serious disease of Fagaceous trees in California and Oregon over the last decade. Tanoak (Notholithocarpus densiflorus) is one of the most susceptible host species, but the cause of host mortality is poorly understood. Previous research...
Resource Type:: Masters Thesis
Full Text::  my major professor, Jennifer Parke, and my  committee members, Everett Hansen and Barb Lachenbruch

Phytosanitation of Douglas-fir (Pseudotsuga menziesii) logs to mitigate the risk of artificially disseminating Phytophthora ramorum within the global trade of timber

Creator:: Hulbert, Joseph M.
Abstract:: Phytophthora ramorum is a plant pathogen that was accidentally introduced to the United States. This invasive microorganism has killed over a million trees in California and Oregon, and continues to spread to new areas. Diseased areas have been nationally quarantined to prevent further spread and more than ninety countries include...
Resource Type:: Masters Thesis
Full Text:: Everett M. Hansen Phytophthora ramorum is a plant pathogen that was accidentally introduced to the

Viability and infective potential of Phytophthora pini zoospores in a recirculating irrigation system

Creator:: Shay, Sarah D.
Abstract:: Phytophthora pini Leonian, recently re-established from P. citricola I, is a pathogen with a wide range of forest and nursery hosts. It causes foliar infections in horticultural nurseries in Oregon, where recirculating irrigation systems are common. Increased use of recirculating irrigation systems may contribute to disease caused by waterborne plant...
Resource Type:: Masters Thesis
Full Text:: threshold value of propagules needed to initiate a successful disease epidemic (Hansen et al. 2005; Banko

ScholarsArchive@OSU

The epidemiology of sudden oak death in Oregon forests

Phytophthora species and riparian alder tree damage in western Oregon

Pathogenicity of Phytophthora species from Oregon waterways

Castilleja and Pedicularis are confirmed as telial hosts for white pine blister rust in whitebark pine ecosystems of Oregon and Washington

Benthic marine algae on Japanese tsunami marine debris – a morphological documentation of the species. Part 1 – The tsunami event, the project overview, and the red algae

Benthic marine algae on Japanese tsunami marine debris – a morphological documentation of the species. Part 2 – The brown algae

Benthic marine algae on Japanese tsunami marine debris – a morphological documentation of the species. Part 3 - The green algae and cyanobacteria

The effects of Phytophthora ramorum stem inoculation on aspects of tanoak physiology and xylem function in saplings and seedlings

Phytosanitation of Douglas-fir (Pseudotsuga menziesii) logs to mitigate the risk of artificially disseminating Phytophthora ramorum within the global trade of timber

Viability and infective potential of Phytophthora pini zoospores in a recirculating irrigation system

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