Leaf functional trait data from three experimental sites in the Colombian Andes, June-August 2019
bibliographic citation: Cox, A.J.F., González-Caro, S., Meir, P., Hartley, I.P., Restrepo, Z., Villegas, J.C., Sanchez, A., Mercado, L.M. (2024). Leaf functional trait data from three experimental sites in the Colombian Andes, June-August 2019. NERC EDS Environmental Information Data Centre. https://doi.org/10.5285/55ed98e7-f150-43c8-9b93-d639c1c8af3e
description: 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.
provenance: ProvenanceStatement
  label: Leaf material was collected from eight species at the experimental sites. Immediately after collection, leaves were sealed in individual plastic bags with damp cotton wool to prevent premature drying. For leaf structural traits, the following procedures were followed. High-precision electronic callipers were used to measure leaf thickness from three areas of each leaf, avoiding the central vein, with the average of these three measurements taken to be leaf thickness (mm). Images were taken of each leaf using a CanoScan LiDE 300 flatbed scanner and then processed using the ‘R’ environment (v4.2.1; R Core Team, 2022) to calculate leaf area (cm2) and leaf width (mm): leaf area was obtained using the ‘LeafArea’ package in R which automates the ImageJ programme while leaf width values were calculated using the ‘LeafJ’ plugin for ImageJ. Following scanning, leaves were weighed to give their wet weight before being dried in an oven to constant mass for approximately 48 hours at 70°C, then re-weighed to give their dry weight. Leaf dry matter content (mg g-1) was calculated as the quotient of leaf dry weight to leaf wet weight while leaf mass per unit area (g m-2) was calculated by dividing dry weight by LA. For leaf nutrients and 13C values, leaves were ground into a powder using a shaker mill and ~1 mg of sample for each was then packed into tin capsules and run through an infrared mass spectrometer. This returned %N values, and thus, mass-based nitrogen content, as well as 13C. For leaf P content, 0.1-0.2 g of sample was subjected to ICP-OES analysis with a unique Dichroic Spectral; this returned mass-based phosphorus content. Both leaf N and P can be expressed on an area-basis by dividing by LMA. For g1, the unified stomatal model was then fitted to diurnal course An and gs measurements in the R environment using the ‘plantecophys’ package to obtain the model parameter g1. The An and gs measurements were collected using LI-6400XT portable photosynthesis system with the…
spatial: Location
temporal: PeriodOfTime
  start date: 2019-06-01
  end date: 2019-08-31
contact point: Mercado, L.M.
publisher: NERC EDS Environmental Information Data Centre
subject: Andean montane forests
subject: leaf functional traits
subject: thermal acclimation
subject: plasticity
type: Dataset
available: 2024-10-21
landing page: https://doi.org/10.5285/55ed98e7-f150-43c8-9b93-d639c1c8af3e
license: OGL-UK-3.0.ttl
access rights: UNRS
distribution:
  access URL: https://data-package.ceh.ac.uk/data/55ed98e7-f150-43c8-9b93-d639c1c8af3e
  license: OGL-UK-3.0.ttl
  access rights: UNRS
  format: Comma-separated values (CSV)
creator: Cox, A.J.F.
creator: González-Caro, S.
creator: Meir, P.
creator: Hartley, I.P.
creator: Restrepo, Z.
creator: Mercado, L.M.
language: en

Mercado, L.M.
type: Person
family name: Mercado
given name: L.M.
member: University of Exeter

NERC EDS Environmental Information Data Centre
type: Organization

Cox, A.J.F.
type: Person
family name: Cox
given name: A.J.F.
member: University of Exeter

González-Caro, S.
type: Person
family name: González-Caro
given name: S.
member: University of Exeter

Meir, P.
type: Person
family name: Meir
given name: P.
member: University of Edinburgh

Hartley, I.P.
type: Person
family name: Hartley
given name: I.P.
member: University of Exeter

Restrepo, Z.
type: Person
family name: Restrepo
given name: Z.
member: Universidad de Antioquia

Villegas, J.C.
type: Person
family name: Villegas
given name: J.C.
member: Universidad de Antioquia

Sanchez, A.
type: Person
family name: Sanchez
given name: A.
member: Universidad del Rosario