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-24

Plot Number:	HV-24
Location:	Toeslope of toposequence; about 1 km north of Happy Valley camp
Description by:	A. Gallant
Sample Date:	7/20/94
Sample Time:
Classification:
Parent Material:	Stabilized fine-textured alluvium
Geomorphic Surface:	Floodplain
Elevation:	950 ft
Slope:	0°
Aspect:	Flat
Vegetation:	Moist Climacium dendroides, Dodecatheon frigidum, Equisetum arvense, Petasites frigidus, Salix lanata, low-shrub tundra (riparian)
Horizon:	Description:
Oe	0-5 cm | Sample S-131
	Very dark gray (10 YR 3/1). 0% gravel; abrupt, smooth boundary. Composed of decomposing mosses (e.g. Climacium dendroides, Tomentypnum nitens, and very fine roots intermixed with silt.
A	5-37 cm | Sample S-132
	Very dark gray-brown (10 YR 3/2). Weak, medium, granular structure with 0% gravel. Slightly sticky and plastic consistence (wet). Sandy loam texture. Flooding events indicated by deposits of higher concentrations of organic materials; black (10 YR 2/3). Two distinct bands occur from 22-24 cm and 32-34 cm. Many very fine and fine roots, common medium roots.
Permafrost	37 cm |