Happy Valley Permanent Vegetation Plots

Walker, D.A., Auerbach, N.A., Nettleton, T.K., Gallant, A., Murphy, S.M. 1997. Happy Valley Permanent Vegetation Plots: Site factors, physical and chemical soil properties, plant species cover, photographs, soil descriptions, and ordination. Arctic System Science Flux Study, Institute of Arctic and Alpine Research, University of Colorado, Boulder, CO.

Home // Preliminary vegetation classification // Vegetation communities and sites // Legend for environmental variables // Environmental data // Relevé size, percent cover // Soils data // Relevé species data //
Appendices: Field descriptions of soils // Plot and soil photos // Plot location map

Field Description of Soil, Plot HV-45

Plot Number:HV-45
Location:West-facing foot slope, nonacidic tundra; 15 m North of gridpoint 7671600N 426900E
Description by:A. Gallant
Sample Date:7/25/94
Sample Time:
Classification:
Parent Material:Colluvium and alluvium
Geomorphic Surface:Turf hummocks
Elevation:950 ft
Slope:
Aspect:W
Vegetation:Moist Dryas integrifolia, Equisetum arvense, Lupinus arcticus, forb, dwarf-shrub, moss tundra
Horizon:Description:
Oi0-6 cm | Sample S-209
Black (10 YR 2/1). 0% gravel; abrupt, wavy boundary. Top 2 cm are live mosses (Tomentypnum nitens, Hylocomium splendens, Aulacomnium turgidum). Many very fine and fine roots.
 
Oa6-10 cm | Sample S-210
Black (10 YR 2/1). 0% gravel; abrupt, broken boundary. Many very fine and fine roots.
 
Bw10-59 cm | Sample S-211
Dark to very dark gray-brown (2.5 YR 3.5/2). Massive structure with less than 10% gravel. Very sticky, very plastic consistence (wet). Clay texture. Few large, yellow-brown mottles (10 YR 5/6). Less than 5% of total soil volume is cobbles (up to 9 cm in diameter).
 
Permafrost59 cm |