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Preparing for the Emerald Ash Borer
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What is the Emerald Ash Borer?
Non-native, metallic green beetle Kills all species of ash trees No natural predators Regulated pest Marianne Prue, Ohio Department of Natural Resources - Division of Forestry, Bugwood.org
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Beetle larva eat the living tissue between the bark and the wood, effectively girdling the tree.
David Cappaert, Michigan State University, Bugwood.org Edward Czerwinski, Ontario Ministry of Natural Resources, Bugwood.org
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BEFORE AFTER Credit: Dan Herms, Ohio State University
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Signs of EAB “D” shaped exit hole “S” galleries under the bark
David Cappaert, Michigan State University, Bugwood.org David R. McKay, USDA APHIS PPQ, Bugwood.org
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Especially susceptible to storm damage
Trees become dry and brittle Highly hazardous Especially susceptible to storm damage Daniel Herms, The Ohio State University, Bugwood.org
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How does EAB spread? Natural dispersal is slow Accelerated by people
80% of all new EAB infestations start in or around campgrounds
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EAB Across North America
Boulder 2010 Longmont 2016
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What can we do? Develop a PLAN Stop the spread, don’t move firewood
Look UP to look out for pests (monitor!) Develop a PLAN It's better to look ahead and prepare than to look back with regret. --Jackie Joyner-Kersee
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Have you answered these questions?
Are your ash trees identified? Who owns them? Whose responsibility is it to treat or remove potentially risky ash trees? Will you treat or remove your community’s trees? Michigan Department of Agriculture, Bugwood.org Can you afford to manage them?
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Plan NOW! Management options Chemical treatments
Proactive removals & infested/reactive removals Waste wood utilization & disposal Replanting & monitoring Diversify urban forest to increase resiliency
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Insecticides are available
Effective for healthy small-medium trees Must be treated every 2-3 years until infestation passes
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Removal: cutting down trees isn’t simple
Who will remove? Is there enough equipment? What do you do with the wood? Where will it go? Who pays?
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Start with an inventory
An inventory will tell you: How many trees you have Condition of trees Identify any candidates to preserve using insecticides How to direct your management activities Budget info
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Monitoring Bio-surveillance Girdled trap trees
Visual surveys & inspections of branch samples
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Disposal & Utilization
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City of Loveland Parks Tree inventory completed for city parks
11,824 total of which 2,742 are ash trees = approx. 25% of park trees are ash Tree inventory for golf courses and natural areas still to be completed Efforts underway Removal and disposal plan Public Park ash tree treatment plan Replacement tree program/under-planting
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City of Loveland Street Trees
Inventory & condition assessment 80% complete Estimated 23% ash trees = almost 50% of public street tree canopy Under development 10-year removal and disposal plan Public street ash tree treatment plan Replacement tree program Adopt-A-Tree
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Tree Scoring Matrix
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Outreach & Education Communication methods
Coordinated responses (County, neighboring municipalities, etc.) Workshops & websites Public inquiries
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Codes & Ordinances Proper licensing & arborist certification
Standards for tree care practices Updating tree species recommendations Preservation of heritage trees Treating & removals of publicly owned trees Establishing a tree planting & replacement program
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Budget Impacts Public tree inventory and condition assessment
Tree removals Stump removals Wood processing and disposal Chemical treatments Tree replacement Tree maintenance Staffing and contracting The treatment, removal, disposal/utilization and replanting of community ash trees will cost money and you need to identify sources of funding and resources. This cost information will show you the direct impact EAB will have on your budget and staff. It will help you make choices on whether to treat or remove trees, whether to spread the costs over time or deal with them all at once and what kind of training, equipment, supplies and contracts you’ll need. Regardless of your choices, EAB will require more funding, whether it’s redirected from other accounts or from new sources.
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Council Policy Issues Proactive or reactive
Public tree removal approach Chemical treatment Tree replacement Private tree issues Consumer Protection Outreach & Education Staffing implications Urban Forestry Program Contract implications
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Questions?
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