LBA-ECO LC-21: Foliar Nutrients in Logged and Intact Tapajos Forest

192 upper canopy species were sampled in March 2003 to measure foliar concentrations of calcium, phosphorus, magnesium, nitrogen, and potassium. The data compares nutrient levels across cover types in a selectively logged area from 2002—forest, gaps, skids, roads, and decks—against a reference site in intact forest 17 km away. This provides a snapshot of biogeochemical impacts following selective logging in the Brazilian Amazon.

Use Cases

• Assessing the nutrient status of tropical tree species based on foliar calcium, phosphorus, magnesium, nitrogen, and potassium concentrations.
• Comparing post-disturbance nutrient levels across different logging infrastructure types (skids, roads, decks) and natural cover (forest, gaps).
• Establishing a baseline for intact forest nutrient levels using the 192-species reference collection.
• Evaluating the short-term biogeochemical impact of selective logging conducted in 2002.

Strengths

• Includes a detailed reference sample from 192 upper canopy species in an intact forest site.
• Provides spatially explicit comparison between a logged area and a control site 17 km away.
• Sampling occurred in a defined time window (March 2003) following a known disturbance event (selective logging in 2002).

Limitations

• Metadata completeness is low: column names, row counts, and file sizes are unknown across all sources.
• Conflicting last-updated dates exist between platforms (2003 vs. 2026), suggesting potential metadata staleness.
• The license is specified only as 'other-license-specified', requiring further investigation for reuse.

Provenance

Source

National Aeronautics and Space Administration

Collection Method

Foliar samples were collected from specific cover types and from a reference site of intact forest.

Time Range

2003-03

Freshness

2026-04-10 01:34:08.978815

Geography

Tapajos National Forest, Para Western Santarem, Brazil