Emerald Ash Borer and Your Community


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Emerald Ash Borer and Your Community

  1. 1. Emerald Ash Borer andYour Community:What You Can Do NowMollie FreilicherEric SeabornMA-DCR Urban& Community Forestry MA Tree Steward Training Harvard Forest, October 19, 2012
  2. 2. Things we know• Emerald ash borer is here.• Emerald ash borer kills trees• Emerald ash borer can be expensive• We should prepare for its arrival now
  3. 3. Emerald Ash Borer• Beetle in Buprestideae family• Typically bright, metallic, emerald green color overall, with the elytra usually appearing somewhat duller and slightly darker green. Purple on abdominal segments under wing covers.• Approximately ½ inch long. Larger than most of our native Buprestids• Very detailed ID guide: www.emeraldashborer.info under ―About EAB‖
  4. 4. EAB in North America• 2002 first detected in Michigan and Ontario• 2003 Maryland, Virginia, Ohio• Continues to spread• Currently in 18 states – Fast spread—10 years – Firewood
  5. 5. Egg about to Mate & lay hatchEggs eggs Adults present through August Eggs hatch & larvae EAB bore into cambium and feed from July – Adults emerge Life October. Overwinter in Cycle outer inch of wood as May-June prepupae. ~April Prepupae Pupate Pupa Late pupae
  6. 6. EAB Signs & SymptomsD-Shaped exit holes Canopy dieback Bark splitting Serpentine galleries Woodpecker damage Epicormic sprouts
  7. 7. Ash Trees in MassachusettsMunicipalities• For most New England communities, the dominant tree type in communities is maple• Ash trees comprise an average 5% of street trees• In some communities the percentage could be greater• Do you know how much ash is in your community?
  8. 8. EAB Impacts onMunicipalities• EAB kills ash trees – Green and white ash are common urban trees• Dead and dying trees can create hazardous conditions as limbs drop and the tree decays—happens quickly!• Removal is costly• Treatment is costly
  9. 9. Be Ready for EAB—Why it’s Important• We know EAB is coming and can be prepared with a response plan• With a plan in place, the cost and loss can be spread over a longer period of time• Community officials and residents can be prepared and ready to act• Coordination with surrounding communities may be possible
  10. 10. What Can You Do Now?• Educate yourself on ash identification and identification of signs and symptoms of EAB – Report suspected findings of EAB to state or federal officials: www.massnrc.org/pests or the federal EAB hotline 1-866-322-4512 or through the Invasive Species app.• Monitor for signs and symptoms of EAB – Do you know how many ash trees you have or where they are located? – Is pest monitoring part of your routine tree management?• Develop a plan to respond to EAB
  11. 11. What is an EAB Response Plan?• Written document outlining objectives and approaches to address and mitigate the impact of EAB on the urban forest• Allows the community to respond with timeliness and order
  12. 12. Parts of a Response Plan• Administration• Brief public officials• Conduct an inventory• Education and outreach• Update or enact ordinances• Wood utilization and disposal• Replanting• Coordinate and form partnerships• Budget• Impacts of EAB on general urban forest management
  13. 13. Parts of a Response Plan1. Administration – Who will be in charge of the EAB response? – A person with urban forestry experience would be a good choice •Tree warden, arborist, forester, landscape professional – Coordinate with state and federal officials
  14. 14. Parts of a Response Plan2. Briefing public officials – Make public officials aware of EAB and the potential concerns and costs for the community – Set a regular schedule for informing officials of the status of the infestation and response
  15. 15. Parts of a Response Plan3. Conduct an Inventory – Inventory all public trees (and private trees that could impact public property, if possible) – Inventory only ash trees if time or resources do not allow a complete inventory • Understand what is at stake in your community • Estimate costs of removal or treatment • If community has lots of ash trees, may want to proactively begin removing poor condition ash trees
  16. 16. Parts of a Response Plan4.Education & Outreach – Let residents know how they might be affected, what they can do, who they can call – Use different resources: newspaper, presentations, internet – Volunteers may be able to assist with inventory or outreach – Train town and municipal employees to identify ash and signs and symptoms of EAB infestation
  17. 17. Parts of a Response Plan5. Update or enact ordinances – Related to infested/diseased trees or wood – To limit movement of firewood – Promote tree preservation to maintain tree population and canopy – Clarify actions for public or private trees that endanger the public – Some ordinances related to Dutch Elm Disease may address some of these issues, but not all – Enact or modify ordinances to be broad enough to address future pests
  18. 18. Parts of a Response Plan6. Wood utilization and disposal – Identify where the wood will go • Mulch, lumber, cogeneration – Movement will be restricted by quarantine – Identify potential staging areas for wood processing – Train employees and businesses that utilize trees on proper handling of ash
  19. 19. Parts of a Response Plan7. Replanting – Replant vacant sites now – Replant with an eye toward diversity – Use your inventory, if present, to inform choices – Ask MA Urban & Community Forestry Program for guidance – Grants available for replanting (MA-DCR Urban and Community Forestry Challenge Grants)
  20. 20. Parts of a Response Plan8. Coordinate and form partnerships – Identify other departments, communities, local groups, and state and federal officials that you will be able to work with to share information and resources
  21. 21. Parts of a Response Plan9. Budget – Project budget costs – Removal – Treatment – Wood utilization or disposal – Use EAB cost calculator to estimate project costs for different courses of action (http://extension.entm.purdue.edu/tree computer/)
  22. 22. Parts of a Response Plan10. Impacts of EAB response on general urban forest management – Responding to EAB will shift resources away from day-to-day management – Identify how work will be prioritized in light of EAB
  23. 23. Response Scenarios• Removal and replacement of all ash• Removal and replacement as funds allow• Removal of some trees, treatment of other trees until they can be removed (buy some time)• Removal of some trees, treatment of some trees to prevent damage and preserve trees indefinitely, treatment of some trees until they can be removed• Treatment of all trees
  24. 24. Considerations• Cost – Treatment application $3-$10 per DBH inch (Central NY Estimate) – Removal can cost hundreds to over a thousand dollars• Liability and safety• Aesthetics / Benefits of trees
  25. 25. Chemical Treatment• Best for trees that are still relatively healthy• Trees with light infestation may not show signs• Prioritize treatment for historic, significant, or otherwise important trees MJIphotos: http://www.flickr.com/photos/capturingwonder • If your trees are located in a quarantine or within 10-15 miles, they are probably at risk
  26. 26. Insecticides for Treatment• Check resources for up to date information on effectiveness and options – Insecticide Options for Protecting Ash Trees from Emerald Ash Borer publication online – Emeraldashborer.info
  27. 27. St. Paul, Minnesota, 2009
  28. 28. St. Paul, Minnesota, 2009
  29. 29. Replanting • Replant non-susceptible species (non-ash) • Start planting now • Improve diversity • Use inventory to guide planting • 10-20-30 guideline – No more than 10% of a species – No more than 20% of a genus – No more than 30% of a family
  30. 30. Some Replanting Selections Kousa dogwood Kentucky coffeetree Littleleaf linden White oak Fringetree Dawn redwood Sweetgum
  31. 31. Replanting• Volunteer events – May be good for groupings of trees, as in a park or common or other defined area• Contract planting – Good for street trees• DPW / Tree Department plantings – Street and park trees
  32. 32. Working With Local Groups• Local tree groups, garden clubs, or other citizen groups may be able to assist with conducting an inventory, monitoring for EAB, organizing a tree planting, or creating educational programs• Many infestations of EAB have been detected by regular citizens, not professionals• Your community may already have people willing and able to help
  33. 33. When EAB Arrives• If you have a plan, put it into place and start responding• Contact your urban & community forestry program for any additional guidance• Be aware of unscrupulous folks who may descend on your community from out of town to ―help‖ with your ash trees. As after a storm, EAB can cause many ―arborists‖ to come out of the woodwork. “New scam targets alleged tree removal due to emerald ash borer”—WTAQ Wisconsin, 8/14/12
  34. 34. What You Can Do Now• Educate yourself on ash identification and signs and symptoms of EAB – Report suspected findings of EAB to federal or state officials• Monitor for signs and symptoms of EAB• Develop a plan to respond to EAB• Contact MA-DCR Urban & Community Forestry Program
  35. 35. EAB Resources• www.emeraldashborer.info• www.stopthebeetle.info• http://na.fs.fed.us/fhp/eab/• www.dontmovefirewood.org/ Highway outreach