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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Soils Characteristics //
Species Composition //
Selected Soil Descriptions //
Plot Photos
Soil Description, Plot SWT-47
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 | | | Classification: | Pergelic Cryoboroll, loamy-skeletal, mixed. |
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| Location: | Northwest side of Toolik Lake. Top of hill above S-5. 68°38' N, 149°38' W. |
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| Physiographic position: | Hill crest. |
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| Topography: | Featureless ground. |
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| Microrelief Height: | 10-15 cm. |
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| Drainage: | Somewhat excessively drained. |
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| Vegetation: | Dry Dryas octopetala, Arnica alpina, Hierochloe alpina, Calamagrostis purpurascens purpurascens, Oxytropis sp., dwarf-shrub, crustose-lichen tundra |
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| Parent material: | Itkillik II glacial till. |
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| Sampled by: | D.A. Walker and C. Westberg, August 10, 1989. |
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| Remarks: | |
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| Weather: | Hazy overcast, very windy weather. |
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| Horizons: | Colors are for the moist soil. |
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| Oi | 0-1 cm. Dead Dryas sp. leaves and miscellaneous litter. |
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| Oa | 1-5 cm. Very dark brown (7.5YR 2/2) sandy clay loam; weak fine granular structure; dry; friable (moist), smooth, slightly sticky, slightly plastic (wet); pH = 5.0; many fine and very fine roots; est. 10 percent of fine gravel less than 2 cm diameter; abrupt smooth boundary. (Sample T-113). |
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| A | 5-23 cm. Dark brown (10YR 3.5/3) gravelly sandy loam; weak medium subangular blocky, breaking to a weak granular structure; damp; friable (moist), gritty, slightly sticky, slightly plastic (wet); pH = 4.9; common very fine and occasionally fine roots; est. 35 percent gravel with cobbles up to 20 cm diameter; clear wavy boundary. (Sample T-114). |
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| IIB | 23-65 cm. Dark grayish brown (10YR 4/2) gravelly sandy clay loam; moderate medium subangular blocky, breaking to a fine moderate granular structure; damp; friable (moist), gritty, sticky, plastic (wet); pH = 7.3; est. 35 percent gravel with cobbles up to 20 cm diameter. (Sample T-115). |
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