Current Forest Health Threats

The current issues in forest health of the greatest concern to the DCR’s Forest Health Program include both introduced and native insects and diseases. Some pests are of statewide concern while others are present in specific geographic areas

Current Threats to Massachusetts Forests

Agent

Picture

Origin

Host Trees

Present

DCR-Management Approach

 

Gypsy Moth

Lymantria dispar

Gypsy Moth

 

Introduced

1869

 

Oaks, other deciduous species

 

Statewide

 

 

 

 

 

 

 

Current management approach relies on natural population controls- naturally abundant virus and fungus populations regulate gypsy moth population cycles.

Winter Moth

Operophtera brumata

Winter Moth

Introduced

2002

Maples, oaks, other deciduous species

Eastern Mass

Biocontrol species, Cyzenis albicans, has been released and successfully established in an effort to manage winter moth populations.

 

Hemlock Woolly Adelgid

Adelges tsugae

Hemlock Woolly Adelgid

Introduced

1989

Eastern hemlock

Statewide

Two biocontrol species, Psedudoscymnus tsugae and Laricobius nigrinus, have been released in MA to limited establishment success.

 

Southern Pine Beetle

Dendroctonus frontalis

Southern Pine Beetle

Native

Pitch pine

Statewide

Population densities are being monitored through annual trapping. The impacts of climate change could significantly alter southern pine beetle generation periods and devastate pitch pine stands.

 

Emerald Ash Borer

Agrilus planipennis

Emerald Ash Borer

Introduced

2012

All ash species

Statewide

Three biocontrol species, Tetrastichus planipennisi, Spathius galinae, and Oobius agrili, have successfully been released in MA. Continued releases are planned.

 

Black Oak Gall Wasp

Zapatella davisae

Black Oak Gall Wasp

Native

Black oak

Cape Cod and Martha’s Vineyard

There is ongoing research to map and monitor the extent of damage caused by the black oak gall wasp.

 

 

White Pine Needlecast

White Pine Needlecast

Native

Eastern white pines

Statewide

White pine defoliation is being monitored across the state. Needlecast has been identified to be caused by multiple fungal pathogens; the most prevalent agent in Massachusetts is Lecanosticta acicola.

Asian Longhorned Beetle

Anoplophora glabripennis

Asian Longhorned Beetle

Introduced

1996

12 Host genus

Worcester, Boylston, West Boylston, Shrewsbury, Holden, Auburn

The eradication program established quarantines to avoid transporting infested wood outside the area.  Survey every host tree in quarantine areas for ALB signs.  Remove infested trees and destroy them by chipping. DCR works in cooperation with USDA PPQ APHIS.

           
 

 

 

 

 

 

Feedback

Did you find what you were looking for on this webpage? * required
We use your feedback to help us improve this site but we are not able to respond directly. Please do not include personal or contact information. If you need a response, please locate the contact information elsewhere on this page or in the footer.
We use your feedback to help us improve this site but we are not able to respond directly. Please do not include personal or contact information. If you need a response, please locate the contact information elsewhere on this page or in the footer.

If you need to report child abuse, any other kind of abuse, or need urgent assistance, please click here.

Feedback