Swiss needle cast foliar retention metrics. This dataset is associated with the following publication: Lan, Y., D.C. Shaw, E. Lee, and P. Beedlow. Distribution of a foliage disease fungus within canopies of mature Douglas-fir in western Oregon. Frontiers in Forests and Global Change. Frontiers, Lausanne, SWITZERLAND, 5: 743039, (2022).

Nothophaeocryptopus gaeumannii is a common native, endophytic fungus of Douglas-fir foliage, which causes Swiss needle cast, an important foliage disease that is considered a threat to Douglas-fir plantations in Oregon. Disease expression is influenced by fungal fruiting bodies (pseudothecia), which plug the stomata and inhibit gas exchange. We measured foliar retention and the density of pseudothecia occluding stomates across 2- to 5-year-old needles from upper, middle and lower canopy positions of mature trees at three sites in the Oregon Coast Range and two sites in the western Oregon Cascade Mountains. This dataset is associated with the following publication: Shaw, D.C., G. Ritóková, Y. Lan, D.B. Mainwaring, A. Russo, R. Comeleo, S. Navarro, D. Norlander, and B. Smith. Persistence of the Swiss Needle Cast Outbreak in Oregon Coastal Douglas-fir, and New Insights from Research and Monitoring. JOURNAL OF FORESTRY. Society of American Foresters, Bethesda, MD, USA, 119(4): 407-421, (2021).

Nothophaeocryptopus gaeumannii is a common native, endophytic fungus of Douglas-fir foliage, which causes Swiss needle cast, an important foliage disease that is considered a threat to Douglas-fir plantations in Oregon. Disease expression is influenced by fungal fruiting bodies (pseudothecia), which plug the stomata and inhibit gas exchange. We measured foliar retention and the density of pseudothecia occluding stomates across 2- to 5-year-old needles from upper, middle and lower canopy positions of mature trees at three sites in the Oregon Coast Range and two sites in the western Oregon Cascade Mountains. This dataset is associated with the following publication: Shaw, D.C., G. Ritóková, Y. Lan, D.B. Mainwaring, A. Russo, R. Comeleo, S. Navarro, D. Norlander, and B. Smith. Persistence of the Swiss Needle Cast Outbreak in Oregon Coastal Douglas-fir, and New Insights from Research and Monitoring. JOURNAL OF FORESTRY. Society of American Foresters, Bethesda, MD, USA, 119(4): 407-421, (2021).

Dendrochronological data for Douglas-fir and western hemlock for sites in western Oregon. This dataset is associated with the following publication: Lee, E., P. Beedlow, R. Waschmann, S. Cline, M. Bollman, C. Wickham, and N. Testa. Tree-ring history of Swiss needle cast impact on Douglas-fir growth in western Oregon: Correlations with climatic variables. Journal of Plant Science and Phytopathology. Heighten Science Publications Inc. (HSPI), East Windsor, CT, USA, 76-87, (2021).

Dendrochronological data for Douglas-fir and western hemlock for sites in western Oregon. This dataset is associated with the following publication: Lee, E., P. Beedlow, R. Waschmann, S. Cline, M. Bollman, C. Wickham, and N. Testa. Tree-ring history of Swiss needle cast impact on Douglas-fir growth in western Oregon: Correlations with climatic variables. Journal of Plant Science and Phytopathology. Heighten Science Publications Inc. (HSPI), East Windsor, CT, USA, 76-87, (2021).