Amazon Tree Diameter Measurements from Jacaranda Project Plots

Monthly diameter at breast height measurements for trees in a dense terra-firme tropical moist forest near Manaus, Brazil. Data was collected along two 20x2500 meter transects stratified by plateau, slope, and lowland areas. The Jacaranda Project, a collaboration between INPA and JICA, gathered these measurements from June 1999 to December 2001.

Use Cases

• Modeling carbon stocks by analyzing diameter growth over time.
• Studying the influence of topography (plateau, slope, baixio) on tree growth rates.
• Calibrating remote sensing estimates of forest biomass with ground-truth diameter measurements.
• Analyzing species-specific growth patterns using local tree name identifiers.
• Investigating seasonal growth patterns from monthly circumference measurements.

Strengths

• Measurements were taken monthly with digital calipers, providing high temporal resolution.
• Transects were stratified by three distinct topographic classes (plateau, slope, baixio).
• Data collection spans a 2.5-year period from mid-1999 to late 2001.

Limitations

• Row count, file size, and specific column names are not provided by any source.
• Sources conflict on the last updated date: Data.gov lists 2026-03 13, while NASA Earthdata lists 2001-12-27.
• The license is specified as 'other-license-specified' on Data.gov but is null on NASA Earthdata.

Provenance

Source

Jacaranda Project (agreement between INPA and JICA), hosted by NASA.

Collection Method

Metal dendrometer bands fixed to tree trunks, with monthly circumference measurements using digital calipers.

Time Range

1999-06 to 2001-12

Freshness

2026-03-13 01:04:22.157632

Geography

ZF-2 Experimental Station, 90 km north of Manaus, Brazil, Amazon Basin.