Impacts of Swiss needle cast on overstory Douglas-fir forests of the western Oregon Coast Range
نویسندگان
چکیده
1. Oregon State University Department of Forest Ecosystems and Society, Hatfield Marine Science Center, 2030 SE Marine Science Drive, Newport, OR 97365, USA. 2. Oregon State University Department of Forest Engineering, Resources and Management, 218 Richardson Hall, Corvallis, Oregon, 97331; [email protected] 3. Oregon State University Department of Botany and Plant Pathology, 1084 Cordley Hall, Corvallis, Oregon, 97331; [email protected]
منابع مشابه
Assessments of Population Structure, Diversity, and Phylogeography of the Swiss Needle Cast Fungus (Phaeocryptopus gaeumannii) in the U.S. Pacific Northwest
Swiss needle cast (SNC) is a foliar disease of Douglas-fir (Pseudotsuga menziesii) caused by Phaeocryptopus gaeumannii (Rohde) Petrak. This fungus is endemic to western North America, where it has historically had little impact in native forests. However, increasing disease severity in western Oregon since the 1990s has prompted renewed interest in P. gaeumannii and SNC. For this study, we anal...
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The fungal pathogen, Phaeocryptopus gaeumannii, causing Swiss needle cast (SNC) occurs wherever Douglas-fir is found but disease damage is believed to be limited in the U.S. Pacific Northwest (PNW) to the Coast Range of Oregon and Washington (Hansen et al., Plant Disease, 2000, 84, 773; Rosso & Hansen, Phytopathology, 2003, 93, 790; Shaw, et al., Journal of Forestry, 2011, 109, 109). However, k...
متن کاملAssessment of Swiss Needle Cast Disease: Temporal and Spatial Investigations of Fungal Colonization and Symptom Severity
Increasing severity of Swiss needle cast (SNC), a foliar disease of Douglas-fir caused by the fungus Phaeocryptopus gaeumannii, has become a matter of concern in forest plantations throughout coastal Oregon and Washington. This study monitored SNC disease in three Oregon Douglas-fir plantations bi-annually in 1998–1999, and compared differences in fungal colonization and symptom development in ...
متن کاملGrowth of Young Douglas-Fir Plantations Across a Gradient in Swiss Needle Cast Severity
During the past decade, Swiss needle cast (SNC) damage has intensified in many Douglas-fir plantations in the Coast Range of Oregon, particularly along the immediate north coast. In plantations with severe symptoms, growth losses and reduced tree vigor are evident, but the magnitude of growth losses associated with varying intensities of damage is not known. A growth impact study was conducted ...
متن کاملGrowth of Young Douglas-Fir Plantations Across a Gradient of Swiss Needle Cast Severity
During the past decade, Swiss needle cast (SNC) damage has intensified in many Douglas-fir plantations in the Coast Range of Oregon, particularly along the immediate north coast. In plantations with severe symptoms, growth losses and reduced tree vigor are evident, but the magnitude of growth losses associated with varying intensities of damage is not known. A growth impact study was conducted ...
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