Vegetation Vegetation cover at higher elevations and on windswept areas consists of dwarf scrub communities dominated by willow or crowberry. Mesic graminoid herbaceous and dry graminoid herbaceous communities occur at lower elevations and in protected sites. Low scrub communities grow in bogs having thick peat deposits. Willow dwarf scrub communities are dominated by Salix arctica, S. rotundifolia, and S. ovalifolia. Crowberry dwarf scrub communities are dominated by Empetrum nigrum.
Mosses are common.
Dry graminoid herbaceous communities occur in coastal areas, such as near coastal marshes and at the base of cliffs. Sphagnum species are always present and are usually the dominant mosses. Feathermosses may be common. Lichens may occur on mounds. Wildfire No fire data are available for the Aleutian Islands.