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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(More)
  • David C Shaw, Gregory M Filip, Alan Kanaskie, Douglas A Maguire, Will A Littke, David Shaw +2 others
  • 2011
Swiss needle cast (SNC) is a foliage disease specific to Douglas-fir (Pseudotsuga menziesii) caused by the Ascomycete fungus Phaeocryptopus gaeumannii. Currently, it is causing an epidemic west of the Oregon Coast Range from Coos Bay to Astoria: 2010 aerial survey estimate of almost 400,000 ac of plantations with visible symptoms. General symptoms include(More)
  • Alan Kanaskie, Ellen Goheen, Nancy Osterbauer, Mike Mcwilliams, Everett Hansen, Wendy Sutton
  • 2008
Sudden oak death (SOD), caused by Phytophthora ramorum, was first discovered in Oregon forests in July 2001. Since then an interagency team has been working with landowners to eradicate the pathogen by cutting and burning all infected and nearby host plants. During the first two years of the eradication effort, all host vegetation within 15 to 30 m of(More)
  • Alan Kanaskie, Everett Hansen, Ellen Michaels Goheen, Wendy Sutton, Paul Reeser, Rick Shultz +1 other
  • 2010
Sudden oak death (SOD), caused by Phytophthora ramorum, was first discovered in Oregon forests by aerial survey in July 2001. Since then an interagency team has been working with landowners to eradicate the pathogen by cutting and burning all infected and nearby host plants. The Oregon SOD program now consists of the following elements: early detection;(More)
Swiss needle cast (SNC) severity in Douglas-fir (Pseudotsuga menziesii) has been shown to vary spatially and temporally in response to climatic factors both within its native range and in regions where it has been planted as an exotic species. Survival models were developed for different Douglas-fir needle cohorts to enhance our understanding of how(More)
  • Alan Kanaskie, Mike Mcwilliams, Dave Overhulser, Rick Christian, Rick Barnes, Mark Montpas +2 others
  • 2012
Acknowledgements: We gratefully acknowledge the numerous forest land owners who cooperated in the survey by providing funding through the Oregon Forest Industries Council Animal Damage Committee, by providing access to their lands, and by ground verifying many polygons. Specifically we thank the following individuals for participating in the ground(More)
  • Gabriela Ritóková, David C Shaw, Greg Filip, Alan Kanaskie, John Browning, Danny Norlander
  • 2016
Swiss needle cast (SNC), a foliar disease specific to Douglas-fir (Pseudotsuga menziesii), is caused by an endemic Ascomycete fungus (Phaeocryptopus gaeumannii). In the late 1980s and early 1990s significant symptoms began to appear in coastal Oregon, and these have been associated with the planting of Douglas-fir in the Sitka spruce zone, leaf wetness(More)
Since the discovery of Phytophthora ramorum in southern Oregon forests in 2001, newly infested areas are located each year. We tracked the spread and dispersal using DNA fingerprinting. While among site genetic variance was low, we did find changes in genotype presence and frequency at the site level. These genotypic differences allowed us to map the spread(More)
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