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Bugs, Fire, and Rainless Days - ACTrees Day 2012
The document discusses the challenges and strategies related to tree health, focusing on invasive pests like the emerald ash borer and the importance of tree inventories and replacement planting. It highlights contributions from various experts and organizations aimed at managing these pests and maintaining a healthy urban forest. Additionally, it underscores the role of volunteers in monitoring and restoration efforts in urban areas like Chicago and Denver.
Bugs, Fire, and Rainless Days - ACTrees Day 2012
- 1. “Bugs, Fire and Rainless Days” Moderator ScoE Jamieson, ACTrees Vice President, Bartle- Tree Experts Vice President • Rob Davis, Denver City Forester, Denver, CO • Glenda Daniel, Associate Director, Openlands, Chicago, IL • Barry Ward, Execu*ve Director, Trees for Houston, Houston, TX
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- 5. Denver Parks and Parkways
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- 8. Evergreen Colorado 9,000 people and 3,500 homes
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- 12. The Dangers of Controlled Burns
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- 15. Mountain Pine Beetle and Fire
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- 20. Colorado State Forest Service Nursery
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- 23. Bugs that Bug Trees: What Openlands TreeKeepers and other volunteers can do: A presenta?on to the Alliance for Community Trees November 13, 2012
- 24. Not all insect pests are equal: fall webworm
- 25. Public Enemy #1: Emerald Ash Borer 1/3” to ½” long 1/8” wide Metallic green Black eyes
- 26. Tools in Our Toolbox • Learning to recognize the signs of infesta*on-‐-‐ gezng training from experts • Tree inventories to locate ash trees in areas of high infesta*on-‐-‐to help public agency long-‐ term planning • Plan*ng new trees where ashes are likely to come down in the next few years.
- 27. Training from Experts: APHIS staff presents to TreeKeepers
- 28. Recognizing signs: EAB Life Cycle -‐ Larvae Three different stages of EAB larvae. Larval EAB feeding on an ash tree's vascular S-‐shaped feeding galleries under ash bark. (D. Cappaert, MSU) ?ssue. (Ed Czerwinski, Ontario Ministry of Natural Resources) (J. Ellis, Purdue University) • Aqer hatching, larvae bore through bark to feed on the trees' vascular *ssue. • Growing larvae zigzag through this delicate *ssue as they feed, forming S-‐shaped tunnels that are flat and wide. • Mature larvae are about 1 inch long; they are creamy white, flat, and have “bell” shaped segments. • Larvae spend the winter under bark.
- 29. Recognizing Signs: Tracks
- 30. Visual Survey -‐ Signs • Adult beetles • Larvae • D-‐shaped emergence holes • Bark splits with loose bark sloughing off • S-‐shaped or serpen*ne larval galleries
- 31. Visible signs: the "D" hole
- 32. Cambium damage & bark splizng
- 33. Recognizing Signs: Crown die-‐back
- 34. Tool #2: Tree Inventories
- 35. Tool # 3: Plan*ng Trees to Replace Ashes: North Park Village Nature Center/Chicago
- 36. Tree Plan*ng: Lincoln Park by Montrose Harbor/Chicago
- 37. Aqer Tree Plan*ng: Bobolink Woods Natural Area/Jackson Park
- 38. Other pests: Gypsy Moth
- 39. TreeKeepers Collec*ng Gypsy Moth Cadavers
- 40. TreeKeepers support Illinois monitoring effort with Gypsy Moth Traps
- 41. Asian Long-‐Horned Beetle: Gone from Chicago but could return
- 42. Bag Worms: TreeKeepers help iden*fy & remove
- 43. Our goal: A Healthy Urban Forest