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Hot or not? Rating beech bark disease
- 1. Hot or Not? Rating Beech Bark Disease TREY TURNBLACER AND DANIEL HONG MENTOR: MARIANN JOHNSTON CHATHAM UNIVERSITY
- 2. BBD and MELNHE Fagus grandifolia ◦ Fagaceae ◦ Major forest component Species Composition Progression Management Source: http://na.fs.fed.us/fhp/bbd/maps/bbd_2_9_04.jpg
- 3. Aspects European Beech Scale ◦ Cryptococcus fagisuga ◦ White wax masses Birch Magarodid ◦ Xylococculus betulae ◦ Excretory tubes Fungus ◦ Neonectria faginata ◦ Neonectria ditissima Xylococculus betulae Cryptococcus fagisuga Photo Credit: Mariann Johnston
- 4. Stages of BBD Advance Front ◦ Scale ◦ Low mortality Killing Front ◦ Fungus begins ◦ Mature tree mortality Aftermath ◦ Mortality slows ◦ Increased saplings abundance ◦ Second killing front?
- 5. Factors Impacting the Aftermath Stand Age ◦ Sapling density Tree Size ◦ More disease Phosphorus and Progression ◦ P associated with reduced tree susceptibility ◦ N:P ratio
- 6. Rating Beech Rating System ◦ Scale ◦ Fungus ◦ Canopy condition Mature Trees (>10cm DBH) ◦ DBH previously recorded in 2015 inventory ◦ Rated for disease Saplings (2-10cm DBH) ◦ 5x5m vegetative plots ◦ Disease and DBH measured Photo Credit: Gretchen Lasser
- 7. 4 0 Photo Credit: Adam Wild and Gretchen Lasser 5 Fungus Scale p<0.05 p<0.05