Alaska Arctic Plant Communities
- Bioclimate Subzones
- Floristic Provinces
- Lake Cover
- NDVI and Phytomass
- Substrate Chemistry
- AATVM Cites
4. Eriophorum angustifolium-Carex aquatilis subtype Dupontia fisheri
Photo A. Eriophorum angustifolium-Carex aquatilis subtype Dupontia fisheri in a wet meadow at Barrow, AK. The white inflorescences of Eriophorum russeolum are visible. This unit was designated as Nodum V (Wet Dupontia fisheri-Eriophorum angustifolium meadow by Webber (1978). Webber et al. 1978, Fig. 6. Photo D.A. Walker.
Photo B. Eriophorum angustifolium-Carex aquatilis subtype Dupontia fisheri in a wet polygon trough at Barrow, AK. (Included in Nodum V of Webber, 1978). Community type 3 occupies the polygon centers. Webber et al. 1978, Fig. 5. Photo D.A. Walker.
Photo C. Another meadow of Eriophorum angustifolium-Carex aquatilis subtype Dupontia fisheri at Barrow. Walker slide 74-?-11. Photo D.A. Walker.
Photo D. Close up of the community shown in Photo C, with abundant Alopecurus alpinus (gray cottony inflorescences). (Subtype 8 of Walker, 1977). Walker slide 73-45-13 OR 73-45-15?? Photo D.A. Walker.
Summary of Habitat: Wet coastal tundra in subzone C
Described from: Barrow (Webber 1978)
Common plant functional types and species:
- Several poorly differentiated wet tundra communities within subzone C are grouped into this unit. The more or less acidic wet coastal tundra communities at Barrow were distinguished from the calcareous landscapes at Barter Island and Prudhoe Bay based on dominant mosses (Elias et al. 1996), but until more information is available, they are all grouped under one name with two codes: Community 4 (acidic) and Community 10 (nonacidic). Somewhat richer communities are found inland in bioclimate subzone D and are grouped in Community 29.
The sedges Carex aquatilis and/or Eriophorum angustifolium, are often the dominant vascular plant species in subzone C. The grass Dupontia fisheri is often present in wet communities near the coast and is used here to designate the wet subtype of subzone C within northern Alaska. A few forbs such as Pedicularis sudetica and Saxifraga foliolosa are usually present. Sphagnum can be locally common in acidic wet tundra. Woody plants are uncommon. Somewhat wetter areas with deeper standing water with the grass Arctophila fulva and/or a few typical aquatic forbs (e.g. Ranunculus palasii, Comarum palustre) are not included in this unit.
Other names from the Alaska literature:
- Includes Nodum V, Wet Dupontia fisheri-Eriophorum angustifolium meadow, 6 study plots; and Nodum VI, Wet Carex aquatilis-Eriophorum russeolum meadow, Barrow, 6 study plots, Webber (1978).
- Includes several stand types: Type 9, Dupontia fisheri, Eriophorum angustifolium, Campylium stellatum, 5 study plots; Type 10, Calliergon sarmentosum, Dupontia fisheri, Drepanocladus brevifolius, 5 study plots; Type 12, Carex aquatilis, Drepanocladus revolvens, 5 study plots; Type 13, Carex aquatilis, Dupontia fisheri, Eriophorum angustifolium, 5 study plots, Barrow, Walker (1977).
- Eriophorum angustifolium-Carex aquatilis subtype Sarmenthypnum sarmentosum, Barrow, 4 relevés, Elias et al. (1996).
- Included in III.A.3.b., Wet sedge-grass meadow tundra, Alaska Vegetation Classification, (Viereck et al. 1992).