Arctic Vegetation and Soil Plots from the Aleutian Islands

Data from 70 study plots on Unalaska and Amaknak Islands provides a detailed snapshot of arctic plant communities and soil properties from August 2007. The dataset includes plot-level information on vegetation species cover, soil chemistry, moisture, organic matter, topography, and elevation. Vegetation cover-abundance was recorded using the standardized nine-point ordinal scale of Westhoff and van der Maarel.

Use Cases

• Analyzing plant community composition across 11 distinct communities and six habitat types using species cover-abundance data.
• Modeling relationships between soil properties (chemistry, moisture, organic matter) and dominant vegetation species.
• Studying topographic and elevational effects on vegetation distribution in the Aleutian Islands.
• Benchmarking current vegetation against this 2007 baseline for climate change impact studies in the Arctic.

Strengths

• Data covers 70 distinct study plots, providing a substantial sample for the region.
• Vegetation cover is quantified using the established nine-point ordinal scale of Westhoff and van der Maarel, ensuring methodological consistency.
• Attributes span multiple domains: vegetation species, soil chemistry, moisture, organic matter, topography, and elevation.

Limitations

• Sources conflict on the last updated date: one states 2007-08 -27, another states 2026-03-13, creating uncertainty about metadata maintenance.
• Specific column names and the exact row count are not provided by any source, limiting precise structural understanding.

Provenance

Source

ORNL_CLOUD

Collection Method

Field data collected from subjectively located study plots during August 2007.

Time Range

2007-08

Freshness

2026-03-13 14:51:53.541371

Geography

Unalaska Island and Amaknak Island in the eastern Aleutian Islands, Alaska, USA.