Connecticut Lakes Maine biophysical regionThe Connecticut Lakes Biophysical Region is part of the Adirondack-New England Mixed Forest-Coniferous Forest-Alpine Meadow Province and the White Mountains Ecoregion Section. There are 3 Forest Provinces, 6 Ecoregion Sections, and 19 Biophysical Regions in Maine.


Province: Adirondack-New England Mixed Forest-Coniferous Forest-Alpine Meadow

The Adirondack-New England Mixed Forest-Coniferous Forest-Alpine Meadow Province has a modified continental climatic regime with long, cold winters and warm summers. Annual precipitation evenly distributed. Landscape is mountainous and was previously glaciated. Forest vegetation is a transition between boreal on the north and broadleaf deciduous to the south.


Ecoregion Section: White Mountains

The White Mountains Section has a maturely dissected, irregular highland characterized by clusters of low, rounded mountains and scattered monadnocks with many glacial features. Rock formations include sedimentary quartzite, slate, and schist with extensive area of igneous rocks including granites, diorite, gabbro, and basalt. Forest vegetation consists of spruce-fir, maple-beech-birch, and aspen-birch cover types.


Biophysical Region: Connecticut Lakes

The Connecticut Lakes Biophysical Region is 98% forested. Maple-beech-birch is the most prevalent forest type, representing 51% of the forestland

The top three tree species in this region (based on the stocking of live trees per average forested acre) are:

  1. Balsam Fir (42 trees per acre)
  2. Red Spruce (32 trees per acre)
  3. Sugar Maple (21 trees per acre)

This graph shows major tree species/species groups, live tree stocking (trees/acre), and how much they contribute to the overall stocking for the Connecticut Lakes Biophysical Region:

Connecticut Lakes Biophysical Region hardwood and softwood species

* All data are based on the Maine Forest Inventory & Analysis, 2015 (United States Department of Agriculture, Forest Service)

Check out the other 6 bioregions in the Adirondack-New England Mixed Forest-Coniferous Forest-Alpine Meadow Province and the White Mountains Ecoregion Section:


To learn more about Maine’s Biophysical Regions, download this comprehensive document from Maine Natural Areas Program (2014):