Toolik Lake Permanent Vegetation Plots

Walker D.A. and Barry N. 1991. Toolik Lake permanent vegetation plots: site factors, soil physical and chemical properties, plant species cover, photographs, and soil descriptions. Data Report 48, Department of Energy R4D Program, Institute of Arctic and Alpine Research, University of Colorado, Boulder, CO.

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Soil Description, Plot SWT-44

	Classification: Pergelic Cryaquoll, loamy-skeletal, mixed. Location: Northwest side of Toolik Lake. 68°38' N, 149°38' W. Part of south-facing toposequence. Physiographic position: Shoulder of long gentle (12 percent slope) SSE-facing toposequence. Topography: Stripe element of sorted stone stripe complex. Microrelief Height: 5 cm. Drainage: Moderately well drained. Vegetation: Dry Dryas integrifolia, Cassiope tetragona, Oxytropis maydelliana, Cetraria cucullata, dwarf-shrub, fruticose-­lichen tundra Parent material: Itkillik II glacial till. Sampled by: D.A. Walker and C. Westberg, August 9, 1989. Remarks: Active layer is > 100 cm. Water table at 37 cm. This plot represents the stripe element of a sorted stripe complex. Weather: Cool, cloudy. Horizons: Colors are for the moist soil, except where noted. Oi 0-2 cm. Mat of mosses, dead Dryas integrifolia and Rhytidium rugosum. Oa 2-17 cm. Very dark brown (7.5YR 2/1.5) sapric material mixed with gravelly sandy loam; weak, medium, subangular blocky, breaking to a fine, weak, granular structure; moist; pH = 5.9; friable (moist), smooth, slightly sticky, slightly plastic (wet); est. 45 percent by volume gravel to 15 cm diameter; common very fine and fine roots; wavy abrupt boundary. (Sample T-104). Bw 17-53 cm. Dark greyish brown (10YR 3.5/2, wet) very gravelly sandy clay loam; few small strong brown (7.5YR 3/6) mottles; moderate, medium, subangular blocky, breaking to a moderate medium granular structure; moist to wet; gritty, sticky, plastic (wet); pH = 6.8; est. 45 percent by volume gravel to 15 cm diameter; few fine roots penetrate to 30 cm; water table at 37 cm. (Sample T-105).
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