Level IV: (1b) Coastal Uplands

Level IV: (1b) Coastal Uplands

The Coastal Uplands ecoregion includes the headlands, high marine terraces, hills, and low mountains surrounding the Coastal Lowlands, with medium to high gradient tannic streams. Elevation varies from 400 to 2500 feet (120 to 760 m).

The climate is marine-influenced with an extended winter rainy season and minimal seasonal temperature extremes. Abundant fog during the summer dry season reduces vegetation moisture stress.

The Uplands region roughly corresponds with the historic distribution of Sitka spruce. After extensive logging, most of the Sitka spruce is gone, and today the forests are dominated by Douglas-fir and western hemlock, with a shrub layer of salal, sword fern, vine maple, Oregon grape, rhododendron, and evergreen blueberry. Wetter slopes and riparian areas feature red alder, bigleaf maple, and western redcedar, with a salmonberry and currant understory. The headlands are covered by grasslands.

The region is nearly three times the size of the Coastal Lowlands, covering 1,431 square miles (3,706 km2) in Washington and 1,117 square miles (2,893 km2) in Oregon.

Public lands include the Drift Creek Wilderness, the Siuslaw National Forest, and the Lewis and Clark and Cape Meares national wildlife refuges. California has not been mapped yet.[1][2]

Source: Wikipedia

2 comments

  1. Pingback: 06 – 07 October Weekend at the Coast « birding from portland
  2. Pingback: Mid-November in the Columbia River Drainage Districts of Clatsop County « birding from portland

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