Arctic Tundra Biomass and Productivity at Point Barrow, 1970-1972

230 grams per square meter per year was the average total net primary productivity for eight coastal tundra vegetation communities at Point Barrow, Alaska. This dataset contains three files with biomass, leaf area index, and NPP estimates for different plant growth forms, plus local climate data, collected during the 1970-1972 growing seasons. The research was conducted as part of the International Biological Program's U.S. Tundra Biome study, with measurements taken at 10-day intervals using harvest and gas exchange methods.

Use Cases

• Modeling historical carbon sequestration in Arctic tundra ecosystems using above- and below-ground biomass columns.
• Comparing net primary productivity (NPP) estimates across eight distinct coastal tundra vegetation types.
• Analyzing the relationship between plant growth form productivity and local climate conditions from the accompanying weather station data.
• Calibrating remote sensing estimates of leaf area index (LAI) with ground measurements taken at 10-day intervals.
• Studying seasonal biomass dynamics from mid-June to August via harvest data from 6x6 meter study plots.

Strengths

• Data includes detailed measurements for eight distinct vegetation communities, providing community-specific NPP estimates.
• Biomass and LAI measurements were taken at high temporal resolution (10-day intervals) during the growing season.
• Dataset is revised and includes corrections to below-ground plant standing crop values, indicating quality control.
• Cross-platform presence on NASA EarthData and Data.gov signals recognized importance and curation.

Limitations

• Critical metadata conflicts exist: the last updated date is reported as both 2026-03-12 and 1990-12 31.
• Core structural details like row counts, column names, and exact file sizes are unknown across all sources.
• Data is historical, covering only a three-year period from 1970 to 1972.

Provenance

Source

International Biological Program (IBP) U.S. Tundra Biome program.

Collection Method

Measurements made by harvest methods in 6x6m plots and with inclined point quadrats; NPP estimates based on harvest and seasonal CO2 gas exchange.

Time Range

1970 to 1972

Freshness

2026-03-12 23:10:07.219995

Geography

Point Barrow, Alaska, USA (71.30 N -156.67 W, Elevation 5 m; weather station at 71.30 N -156.78 W, Elevation 31 m).