Wetland Classification and Mapping of Seward, Alaska

 

 

Map Unit Descriptions

 

Ecosystem: Discharge Slope

 

Map Component: SPS

 

Seward Area Extent: 2 wetland polygons; 16.6 acres

A willow, sedge and bluejoint reedgrass dominated opening in the larger of the two wetlands mapped as SPS.  This wetland is diverse, consisting mainly of a spruce forest, but supports this and other openings, in addition to small areas of upland.

Wetland Indicators

Type: Mineral soil

Average depth to water table: not measured

Organic layer thickness: not measured

Average depth to redoximorphic features: not measured

Common Soils: probably Typic Cryosaprists, or Typic Cryaquods (Histic)

Plant communities:

Sitka alder - devil's club (Alnus viridis ssp. sinuata - Oplopanax horridus)

Sitka sedge (Carex sitchensis)

Mountain hemlock / rusty menziesia - early blueberry (Tsuga mertensiana / Menziesia ferruginea - Vaccinium ovalifolium)

Bluejoint reedgrass - field horsetail (Calamagrostis canadensis - Equisetum arvense)

 

NWI: PFO4B

HGM: Terrene Slope Throughflow

Two wetlands in the Seward area were mapped as SPS, a discharge slope dominated by Sitka spruce forest.  On is large and diverse, and lies on a footslope above the Snow River.  The other is small and lies in a ravine north of Bear Lake; it was not visited.  The large diverse SPS is primarily spruce forest, but supports many openings, some with areas of peatland.  It also support small upland inclusions over a diverse microtopography.

 

 


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Contact: Mike Gracz
Kenai Watershed Forum 
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12 February 2007 15:29