This dataset includes key leaf functional trait data collected from three common garden sites along an elevation/temperature gradient in the Colombian Andes. From eight species, there are a selection of leaf structural (leaf mass per unit area, leaf thickness, leaf dry matter content, leaf area, leaf width) nutrient (nitrogen and phosphorus, expressed on area- and mass-bases) and water-use efficiency (13C and g1) traits. Values for these traits were obtained by a combination of laboratory analysis, raw measurements with handheld equipment, and processing with packages in the ‘R’ environment. Full details about this dataset can be found at https://doi.org/10.5285/55ed98e7-f150-43c8-9b93-d639c1c8af3e

This dataset contains information about temperature response curves of ACi (i.e., CO2 response curves of net photosynthesis) that were collected on Colombian Andean forests tree species that were planted in three, common-garden tree plantations along a 2000m altitudinal gradient. Specifically, individuals of cold- and warm-affiliated species were planted under common soil and water conditions, exposing them to the hot and cold extremes of their thermal niches, respectively. This work was supported by the UK Natural Environment Research Council (NE/R001928/1) Full details about this dataset can be found at https://doi.org/10.5285/cc4c656f-4e4d-4f26-af23-69b4f007e43f