AboutResearchEducationProgram News


The Holt Research Forest is the site of long-term forest ecosystem research in Arrowsic, Maine. Maine TREE acquired the 350-acre property in 2014 through a merger with the Holt Woodland Research Foundation. The woods are predominantly a dry ridge, oak-pine ecosystem, in Maine’s coastal climatic and midcoast biophysical regions.


AboutResearchEducationProgram News

The Holt Research Forest research plan emphasizes two goals: (1) Monitor long-term changes in the forest’s plant and animal populations; and (2) Document the effect of forest management on these populations.

Every summer, interns are hired to live and work at the Holt Research Forest in Arrowsic. These internship opportunities that give college level and early career professionals an opportunity to gain valuable field and research experience.

Visit HoltForest.org to learn more about the Holt Research Forest and its decades of research


AboutResearchEducationProgram News

Workshops and education programming has always been part of the HRF mission. A new outdoor classroom and interpretive trail are helping to increase opportunities to communicate with the public the findings and benefits of long-term forest ecosystem research. Maine TREE is excited to continue offering programs at the Holt Research Forest for the public to enjoy.

Holt Research Forest News

AboutResearchEducationProgram News

  • Holt Research Forest Summer Technician Recap
    By Marin Harnett and Jack McCann, 2022 Holt Research Forest Summer Technicians We thoroughly enjoyed our time together working at the Holt Research Forest this…
  • Holt Research Forest 2022 Data Collection
    Holt Research Forest Summer Technicians (left) describe their process for collecting regeneration data to Downeast Magazine reporter, Peter Smith. Holt Research Forest summer research technicians…
  • Outdoor Learning at Holt Research Forest
    By Kaylee Trefethen Two Kindergarten girls and I have been very fortunate to spend time in Maine TREE’s Holt Research Forest during the end of…