Photosynthetic CO2 Response Curves Across Altitudinal Gradient in Colombian Andes

Temperature response curves of ACi (CO2 response curves of net photosynthesis) were measured for tropical montane rainforest tree species. Data was collected in 2022 from three common-garden tree plantations along a 2000m altitudinal gradient in the Colombian Andes, exposing cold- and warm-affiliated species to thermal niche extremes. The work was supported by the UK Natural Environment Research Council.

Use Cases

• Model photosynthetic thermal acclimation by analyzing ACi curve parameters across the 2000m altitudinal gradient.
• Compare CO2 response curves of net photosynthesis between cold-affiliated and warm-affiliated tree species under common soil conditions.
• Investigate the relationship between leaf temperature and ACi curve metrics within tropical montane forest habitats.

Strengths

• Data captures experimental conditions across a substantial 2000-meter altitudinal gradient.
• Measurements control for soil and water conditions in common-garden plantations, isolating temperature effects.
• Focus on tropical montane forest species provides data for a less-studied biome.

Limitations

• Sample size and number of measured curves are unknown, limiting assessment of statistical power.
• Geographic scope is restricted to the Colombian Andes, which may limit generalizability to other tropical regions.
• Data is from a single year (2022), lacking temporal replication or long-term trend analysis.

Provenance

Source

Environmental Information Data Centre.

Collection Method

ACi curves collected from tree species planted in three common-garden plantations along an altitudinal gradient.

Time Range

2022.

Freshness

Last updated in March 2026, indicating recent metadata maintenance.

Geography

Colombian Andes.