DOI: 10.5061/dryad.t4b8gtjbk
title: Thermal acclimation of tree species in a Tropical Andean city: Exploring the role of species origin and thermal niche

description: Premise of the study: Urban environments challenge plant
 performance due to warmer and drier atmospheric conditions. The extent of
 these impacts varies based on species' ability to cope with harsh
 conditions through acclimation. We evaluated the influence of species
 origin and thermal niche on the acclimation of leaf traits and shifts in
 the occupation of the functional trait space of ten tree species growing
 in two environmentally contrasting sites in Bogotá, Colombia.
 Methods: We measured six leaf traits per species in both sites
 and used generalized linear models to evaluate the influence of origin and
 thermal niche on acclimation of leaf traits, and t-tests for shifts in the
 occupation of the functional trait space.  Key
 results: Species origin predicted thermal tolerance and
 morphological trait acclimation to warmer conditions. Although exotic
 species decreased thermal tolerance in the warmer site, both origins
 acclimated traits consistently. Shifts in the occupation of the functional
 trait space varied between origins; warmer conditions reduced the size of
 the functional trait space of exotics, and increased the phenotypic
 similarity of natives. Thermal tolerance acclimation and changes in
 functional trait space varied across species. Finally, thermal niche
 metrics were uncoupled from species origin and failed to explain the
 acclimation capacity of studied species. Conclusions: Although species
 origin influenced the acclimation to warmer conditions, the effect of
 origin was not related to species’ thermal niches. Our results provide
 crucial information for decision-makers involved in designing urban and
 peri-urban green spaces that can withstand climate change.
description: # Thermal acclimation of tree species in a Tropical Andean city: Exploring
 the role of species origin and thermal niche - Dataset
 [https://doi.org/10.5061/dryad.t4b8gtjbk](https://doi.org/10.5061/dryad.t4b8gtjbk) ## Description of the data and file structure This dataset includes values for leaf morphological traits, photosynthetic thermal tolerance, and metrics related to the occupation of functional space (volume and density) for the studied species at each location. ### Files and variables #### File: Data.xlsx **Description:** Leaf morphological traits, photosynthetic thermal tolerance, and volume and density of the functional trait space for the studied species at each location. ##### Variables * **Species**: Species name * **Site**: JBB: Botanical Garden, TIM: Timiza Park * **Origin**:  Origin of species for Colombia (Native, Exotic) * **LA**: Leaf area (cm²) * **Lth**: Leaf thickness (mm) * **LDMC**: Leaf dry matter content (mg/g) * **SLA**: Specific Leaf Area (cm²/g) * **T50**: 50% reduction in Fv/Fm * **Tcrit**: Temperature at which the slope of Fv/Fm – Temperature reaches 15% of its more extreme value * **Volume**: Functional trait space volume measured as the sum of variances * **Density**: Functional trait space density measured as the minimum spanning tree average distance