Alaska Arctic Plant Communities
- Bioclimate Subzones
- Floristic Provinces
- Lake Cover
- NDVI and Phytomass
- Substrate Chemistry
- AATVM Cites
8. Dryas integrifolia-Ochrolechia frigida
Photo B. Dryas integrifolia-Lecanora epibryon community on dry sandy terrace of the Kuparuk River on east side of the delta. Walker Slide 81-7-19. Photo D.A. Walker.
Summary of Habitat: Dry moderately exposed nonacidic cryoturbated soils in subzone C
Described from: Barter Island (Elias et al. 1996)
Common plant functional types and species:
- This type occurs on dry to moist nonacidic cryoturbated mineral soils near the coast in Subzone C of northern Alaska. It is a nonacidic counterpart to Community 1, which occurs on dry acidic sites. It is closely related to "Dry Dryas integrifolia, Saxifraga oppositifolia, Lecanora epibryon dwarf shrub, crustose lichen tundra" described from cryoturbated soils at Prudhoe Bay (Walker 1985). This type occurs on somewhat moister, more organic rich soils with more evidence of frost heaving than Dryas integrifolia-Carex rupestris subtype Oxytropis nigrescens, which also occurs in subzone C of northern Alaska on gravelly soils. It is not well characterized and could be grouped with Community 24, but the dry sedge Carex rupestris is usually absent and replaced by the more mesic sedge species Carex bigelowii and Eriophorum angustifolium ssp. triste.
Other names from the Alaska literature:
- Community type Ochrolechia frigida-Dryas integrifolia, Barter Island, 7 relevés, Elias et al. (1996).
- Stand Type B2, Dry Dryas integrifolia, Saxifraga oppositifolia, Lecanora epibryon dwarf-shrub, crustose-lichen tundra, Prudhoe Bay, 5 relevés, Walker (1985).
- Stand Type Cerastium beeringianum-Minuartia rubellum, 5 relevés in very exposed sites near the coast, M.D. Walker (1990).
- Included within II.D.1.b, Dryas-sedge tundra, Viereck et al. (1992).