Wetland Classification and Mapping
of Seward, Alaska
An extension of wetland classification and mapping of the Kenai Lowland
Map Unit Descriptions
Map Component: D3
Seward Area Extent: 9 wetland polygons; 9.8 acres.
A D3 wetland on the bedrock knob near the mouth of Sawmill Creek.
Type: Peat, or mineral
Average depth to water table: 20 cm
Organic layer thickness: 150+ cm, if peat, 20 cm if mineral soil
Average depth to redoximorphic features: n/a if peat, 8 cm if mineral soil
Common Plant communities:
Crowberry - Labrador tea (Empetrum nigrum - Ledum palustre spp. decumbens)
Sphagnum - Ericad (Sphagnum spp. - Ericaceous shrub)
Fewflower sedge - Dwarf birch (Carex pauciflora - Betula nana)
HGM: Terrene Basin Isolated
D3 is the map component in a depressional wetland with a deeper water table. Around Seward, D3 wetlands are often dominated by crowberry (Empetrum nigrum) and/or fewflower sedge (Carex pauciflora). A few stunted mountain hemlock (Tsuga mertensiana) may be present. These are small peatlands in bedrock depressions not hydrologically connected at or very near the surface with other wetlands. This component is most commonly found as a distinct unit, but it is also found mixed with lower, wetter sedge-dominated areas (D23 or D32).
|Contact: Mike Gracz Kenai Watershed Forum Homer Field Office Old Town Professional Center 3430 Main Street Suite B1 Homer, AK 99603 907-235-2218||
12 February 2007 15:10