bugs, fire, and rainless days - actrees day 2012
DESCRIPTION
During the Alliance for Community Trees "ACTrees Day" Annual Meeting in Sacramento, CA, on November 13, 2012, moderator Scott Jamieson led a panel discussion on how local community tree leaders are handling disastrous threats to urban forests, including invasive species, fires, and drought. Speakers included Rob Davis of the City of Denver, Glenda Daniel of Openlands, and Barry Ward of Trees for Houston. Learn more about ACTrees Day at http://ACTrees.org/what-we-do/training-and-conferences/annual-meeting/TRANSCRIPT
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“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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DENVER 1875
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Colorado Front Range
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Denver Parks and Parkways
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Denver Mountain Parks
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55 Miles West
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Evergreen Colorado 9,000 people and 3,500 homes
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Fuel Reduc*on
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Stand Thinning
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Managing Slash
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The Dangers of Controlled Burns
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Colorado Springs
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Waldo Canyon Fire
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Mountain Pine Beetle and Fire
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Post Fire
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Watershed Protec*on
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Erosion Control
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Restora*on Efforts
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Colorado State Forest Service Nursery
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Natural Regenera*on
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THANKS FROM DENVER
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Bugs that Bug Trees: What Openlands TreeKeepers and
other volunteers can do: A presenta?on to
the Alliance for Community Trees
November 13, 2012
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Not all insect pests are equal: fall webworm
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1/3” to ½” long
1/8” wide
Metallic green
Black eyes
Public Enemy #1: Emerald Ash Borer
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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.
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Training from Experts: APHIS staff presents to
TreeKeepers
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• 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.
Recognizing signs: EAB Life Cycle -‐ Larvae
Three different stages of EAB larvae. (D. Cappaert, MSU)
Larval EAB feeding on an ash tree's vascular ?ssue. (J. Ellis, Purdue University)
S-‐shaped feeding galleries under ash bark. (Ed Czerwinski, Ontario Ministry of Natural Resources)
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Recognizing Signs: Tracks
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• Adult beetles • Larvae • D-‐shaped emergence holes • Bark splits with loose bark sloughing
off • S-‐shaped or serpen*ne larval galleries
Visual Survey -‐ Signs
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Visible signs: the "D" hole
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Cambium damage & bark splizng
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Recognizing Signs: Crown die-‐back
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Tool #2: Tree Inventories
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Tool # 3: Plan*ng Trees to Replace Ashes:
North Park Village Nature Center/Chicago
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Tree Plan*ng: Lincoln Park by Montrose Harbor/Chicago
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Aqer Tree Plan*ng: Bobolink Woods Natural
Area/Jackson Park
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Other pests: Gypsy Moth
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TreeKeepers Collec*ng Gypsy
Moth Cadavers
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TreeKeepers support Illinois monitoring effort
with Gypsy Moth Traps
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Asian Long-‐Horned Beetle: Gone from Chicago but could return
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Bag Worms: TreeKeepers
help iden*fy & remove
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Our goal: A Healthy Urban Forest