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The Marine West Coast Forest is a Level I ecoregion of North America designated by the Commission for Environmental Cooperation (CEC) in its North American Environmental Atlas. The region includes parts of Alaska , the Yukon , British Columbia , Washington , Oregon , and California .
The name of the comparable ecozones in the United States, where Level II ecoregions correspond to the international term "ecozone", are the Marine West Coast Forest and the Northwestern Forested Mountains ecoregions. In the floristic province system, the region is described as part of the Rocky Mountain Floristic Region.
Regions where oceanic or subtropical highland climates (Cfb, Cfc, Cwb, Cwc) are found. An oceanic climate, also known as a marine climate or maritime climate, is the temperate climate sub-type in Köppen classification represented as Cfb, typical of west coasts in higher middle latitudes of continents, generally featuring cool to warm summers and cool to mild winters (for their latitude), with ...
Toggle Marine West Coast Forest subsection. 1.1 1 Coast Range. 1.2 3 Willamette Valley. ... vegetation, climate, soils, land use, wildlife distributions, and ...
Ecoregions may be identified by similarities in geology, physiography, vegetation, climate, soils, land use, wildlife distributions, and hydrology. The classification system has four levels, but only Levels I and III are on this list. Level I divides North America into 15 broad ecoregions; of these, 12 lie partly or wholly within the United States.
There are three distinct types of vegetation on this coast: the forests of the coastal plain dominated by western hemlock (Tsuga heterophylla), western red cedar (Thuja plicata) and amabilis fir (Abies amabilis); mountain forest of mountain hemlock (Tsuga mertensiana), amabilis fir and yellow cedar (Chamaecyparis nootkatensis); and alpine tundra with sedge meadows and lichen-covered rocks.
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A marine coastal ecosystem is a marine ecosystem which occurs where the land meets the ocean. Worldwide there is about 620,000 kilometres (390,000 mi) of coastline. Coastal habitats extend to the margins of the continental shelves, occupying about 7 percent of the ocean surface area.