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Happy Valley Permanent Vegetation Plots


This dataset contains Happy Valley Permanent Vegetation Plots data, including environmental, soil, and vegetation information collected from 55 releve plots at the Happy Valley research site along the Sagavanirktok River in northern Alaska. To complement formal releve sampling of vegetation during the period July 18-27, 1994, the investigators described each study site (including site topography, surficial geology, estimated snow duration, soil moisture, thaw depth, and signs of disturbance, among other parameters) and collected soil samples adjacent to the releve plots for laboratory analyses. Soil analyses include measurements of soil chemistry, pH, organic matter content, and texture (percentages of sand, silt, and clay). Ordination analysis displays releve data in two-dimensional space according to species similarity. Results from ordination reveal that three environmental variables -- stability, exposure, and soil moisture -- significantly affect vegetation composition.

Data access

ORDER data for delivery by FTP

Additional information

Related projects: ARCSS
Observational frequency: no set schedule
Spatial type: point
Categories: Arctic, Land Character.
Platforms: Vegetation Sampling
Documentation: readme.txt [5 KB]
Identifier: doi:10.5065/D66D5R38 (Link: )

Temporal coverage

Begin datetime: 1994-07-18 00:00:00, End datetime: 1994-07-27 23:59:59

Spatial coverage

Minimum latitude: 69.233300, Minimum longitude: -148.500000
Maximum latitude: 69.233300, Maximum longitude: -148.500000


Point of contact

Donald A. (Skip) Walker
Institute of Arctic Biology
E-Mail address: ffdaw at uaf dot edu