Circumpolar Arctic Vegetation Unit W1
- CAVM
- Vegetation
- About the Vegetation Map Units
- Bioclimate Subzones
- Floristic Provinces
- AVHRR
- Elevation
- Lake Cover
- Physiography
- NDVI and Phytomass
- Substrate Chemistry
- Coastline
- Literature
Barrens:
B1B1. Cryptogam, herb barren -
B2B2. Cryptogam barren complex (bedrock) -
B3B3. Noncarbonate mountain complex -
B4B4. Carbonate mountain complex ||
Graminoid Tundras:
G1G1. Rush/grass, forb, cryptogam tundra -
G2G2. Graminoid, prostrate dwarf-shrub, forb tundra -
G3G3. Non-tussock sedge, dwarf-shrub, moss tundra -
G4G4. Tussock-sedge, dwarf-shrub, moss tundra ||
Prostrate-shrub Tundras:
P1P1. Prostrate dwarf-shrub, herb tundra -
P2P2. Prostrate/hemiprostrate dwarf-shrub tundra ||
Erect-shrub Tundras:
S1S1. Erect dwarf-shrub tundra -
S2S2. Low-shrub tundra ||
Wetlands:
W1W1. Sedge/grass, moss wetland -
W2W2. Sedge, moss, dwarf-shrub wetland -
W3W3. Sedge, moss, low-shrub wetland
Hierarchy of Geobotanical Vegetation Map Units (Walker DA 2002)
W1. Sedge/grass, moss wetland
Wetland complexes in the colder areas of the Arctic, dominated by sedges, grasses, and mosses. Subzone B and Subzone C.
Detailed Description
Wetland complexes of Subzones B and C, including water, low wet areas and moist elevated microsites.
Area: 101 x 1000 km2.
Representative Syntaxa
Communities of the class Scheuchzerio-Caricetea; e.g., Poo arcticae-Dupontiae fisheri Matv. 1994 (Taimyr Peninsula), Meesio triquetrae - Caricetum stantis Matv. 1994 (Taimyr Peninsula), Eriophoretum scheuchzeri Fries 1913, Caricetum rariflorae Fries 1913, Arctophiletum fulvaeThannh. 1976 (Svalbard), Caricetum stantis Barrett & Krajina 1972.
Dominant Plants
Sedges, grasses, mosses, and forbs. Grasses are more important in Subzone B wetlands than in Subzone C. Elevated microsites have moist graminoid, prostrate dwarf-shrub, forb, and moss tundra species (see also Unit G2).
-
- Sedge: Carex aquatilis; Eriophorum triste; Eriophorum scheuchzeri;
- Grass: Arctophila fulva; Alopecurus alpinus; Pleuropogon sabinei; Dupontia fisheri; Poa pratensis;
- Moss: Calliergon giganteum; Warnstorfia sarmentosa; Cinclidium arcticum; Hamatocaulis vernicosus; Campylium stellatum; Plagiomnium ellipticum; Bryum pseudotriquetrum;
- Forb: Cardamine pratensis; Cerastium regelii; Caltha arctica; Bistorta vivipara; Saxifraga cernua; Saxifraga foliolosa; Pedicularis sudetica;
- Grass: Pleuropogon; Dupontia; Alopecurus;
- Moist graminoid, prostrate dwarf-shrub, forb, moss tundra species: Eriophorum triste; Carex misandra; Carex membranacea; Carex atrofusca; Kobresia simpliciuscula; Salix arctica; Salix reticulata; Tomentypnum nitens;
a=acidic, n=non-acidic