Seward Wetland Mapping Project
Chugach National Forest Plant Community Descriptions
From: R.L. DeVelice, C.J. Hubbard, K. Boggs, S. Boudreau, M. Potkin, T. Boucher and C. Wertheim. 1999. Plant Community Types of the Chugach National Forest: southcentral Alaska. USDA Forest Service, Chugach National Forest, Alaska Region Technical Publication R10-TP-76. Anchorage, AK. 375pp. (download 3.5Mb .pdf)
Picea sitchensis/Equisetum arvense
(Sitka spruce/common horsetail)
(PICSIT/EQUARV; 4 sites)
IA1a. Closed needleleaf forest, Sitka spruce
A Sitka spruce / Field horsetail forest along the Resurrection River.
Vegetation-Picea sitchensis (Sitka spruce) is the dominant conifer with
Populus balsamiferassp. trichocarpa (black cottonwood) occasionally present
as a minor associate. Shrubs are sparse in this type, butAlnus crispa ssp.
sinuata(Sitka alder) and Vaccinium ovalifolium (early blueberry) are often
present. Low and dwarf shrubs are absent.Equisetum arvense (common
horsetail) is abundant and is the major indicator for this type. Other
herbaceous species which may be present but inconsistently represented
includeRubus pedatus (fiveleaf bramble), Streptopus amplexifolius
(twistedstalk),Gymnocarpium dryopteris (oak fern), and Athyrium filixfemina
Physical setting- Sitka spruce/common horsetail is an incidental type that
occurs on flood plains. The few sites sampled are on flat terrain at 50 feet
or less elevation.
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03 November 2006 12:13