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New MFS report documents steady rise of budworm

Related story in BDN: ‘It’s coming:’ Maine readies for new battle with spruce budworm

Entomologists from the Maine Forest Service noted a steady rise in the numbers of insects caught in pheromone traps concentrated along the Canadian border in 2015, according to a report released Dec. 11. Quebec’s infestation now encompasses 15.6 million acres and has spread south onto the Gaspe Peninsula and toward Maine. The insect’s potential to become an outbreak over vast regions of commercially valuable spruce-fir forests has scientists and public official deeply concerned. An infestation can spread rapidly via moths migrating to new areas.
budworm 12-11-2015 for web

Charlene Donahue, Maine Forest Service entomologist, checks a budworm trap in Trout Brook Twp.

“The total economic impact of Maine’s forest industry is $8 billion with direct and indirect employment of 38,789 workers,” said Governor Paul R. LePage. “Fighting destructive pests like the spruce budworm is important to help protect Maine jobs and our economy. It is important that Maine’s forest professionals identified the potential threat early on, are on top of recent developments and are preparing action steps to help minimize the damage from a future budworm outbreak.”

Commissioner Walt Whitcomb stressed the Agriculture, Conservation and Forestry Department has been busy tracking the budworm by expanding the program used to determine its potential spread and impact.

“Permanent pheromone traps have been run annually for the past twenty years,” Whitcomb said. “In light of the serious nature of the current potential threat to Maine forests, we significantly expanded our monitoring program last year. We are also working closely with stakeholders on a response plan to help minimize damage to our spruce-fir forests in the event of a major outbreak.”

Maine’s Response:

Because the last spruce budworm outbreak during the 1970s-80s grew quickly, killed millions of acres of spruce-fir stands, and cost the region’s economy many hundreds of millions of dollars, the Maine Spruce Budworm Task Force was formed in summer 2013 by the University of Maine’s Cooperative Forest Research Unit (CFRU), Maine Forest Service (MFS), and the Maine Forest Products Council (MFPC) to begin the process of preparing for the next outbreak of the eastern spruce budworm.

Task teams including more than 65 experts on various aspects of the issue were assembled to address key aspects of the coming outbreak, including: wood supply & economic impacts; monitoring & protection; forest management; policy, regulatory and funding; wildlife habitat; public communications & outreach; and research priorities. Their pending report (which is in final drafting stages) includes an initial risk assessment of the coming spruce budworm outbreak and provides key recommendations for how Maine’s forestry community can begin preparing for and responding to the coming outbreak.

budworm 3 12-11-2015 for webSpruce Budworm:

The native spruce budworm has long been recognized as a regular component of Maine’s spruce-fir forests. Under normal (endemic) conditions populations of this insect are often so low as to be difficult to detect. Periodically, however, the budworm undergoes a population explosion (epidemic) and becomes so abundant that serious feeding damage occurs. Heavily infested stands appear reddish in July due to masses of dead, chewed needles clinging to the branches. Tree mortality may occur after several years of heavy feeding.

For more information, contact MFS entomologist Charlene Donahue, 207-287-2431.

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