Vegetation of the Atlantic Region of North America: A Biome Tour

The "Atlantic region" spans a continent-wide climatic gradient. Here's how vegetation zones align from coast to interior and north to south.

1. Temperate Rainforests (Pacific Northwest Coast)

Though technically Pacific-facing, this coastal belt (BC, WA, OR) is often grouped in broad "Atlantic region" classifications. Towering Douglas fir, western hemlock, Sitka spruce, western red cedar; lush understory of ferns, mosses, trilliums.

2. Grasslands (Great Plains / Midwest)

Interior rain shadow creates prairies: big bluestem, Indian grass, switchgrass; wildflowers (coneflower, black-eyed Susan, goldenrod); rich pollinator/bird life.

3. Tundra (Alaska / Northern Canada)

Permafrost zone: mosses, lichens, arctic poppy, saxifrage, dwarf willow/birch; caribou, polar bear, migratory birds.

4. Deciduous Forests (Great Lakes to Appalachians)

Oak, maple, birch, beech dominate; seasonal leaf-off; rich understory (shrubs, spring ephemerals); deer, raccoon, songbirds.

5. Mixed Forests (Transition Zones: Rockies, Cascades)

Conifer-deciduous blends: Douglas fir, hemlock, ponderosa pine, larch + aspen, cottonwood.

6. Coastal Vegetation (Atlantic Seaboard)

Salt marshes: cordgrass, saltwort.
Dunes: beach grass, sea rocket, dune sunflower.
Maritime forests: live oak, red cedar, wax myrtle—salt-tolerant.

This mosaic reflects latitude, elevation, precipitation, and disturbance history.