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Wetland Classification and Mapping of the Kenai Lowland, Alaska
Map Unit Descriptions Ecosystem: Headwater Fen Map Component: H2
Extent: 40 wetland polygons; 144.1 ha; 0.10% of wetland area; 0.24% of wetland polygons. |
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 A ribbed, tufted bulrush-dominated H2 fen near the Ninilchik Domes (polygon 2934). |
Wetland Indicators Type: Peat Average depth to water table: 7.6; n=14 Organic layer thickness: 147.6 cm; n=15 Average depth to redoximorphic features: n/a Common Soils: STARICHKOF, SALAMATOF Common Plant communities: Tufted bulrush – Tall cottongrass Tufted bulrush – Fewflower sedge
NWI: PEM1Bg HGM: Terrene Basin groundwater-dominated Throughflow headwater. If not adjacent to a Late Snow Plateau Ecosystem wetland, then: Terrene Basin Outflow headwater. |
| Accuracy assessment: 7 polygons interpreted as H2 on aerial photographs were field checked. 4 remained H2; 1 each was revised to H23, H3 and H32. | |
The H2 map component is a fen with a shallow water table, frequently dominated by sedges, in a headwater basin. These units have a water table at or very near the surface for the entire growing season. This is a common map component of Headwater Fens and is often found in a mixed complex with the most common, often shrub-dominated, H3 component. This component is common as a ribbed fen dominated by tufted bulrush (Tricophorum caespitosum).
