Table 6 Data dictionary for plant functional traits (dataset iii-a) from an ITEX warming experiment in Endalen, Svalbard.
Variable name | Description | Variable type | Variable range or levels | Units | How measured |
|---|---|---|---|---|---|
Project | Project from where data were collected; ITEX = ITEX warming experiment, Gradient = elevational gradients | categorical | ITEX – ITEX | recorded | |
Year | Year of sampling | numeric | 2018 – 2018 | yyyy | recorded |
Date | Date of sampling | date | 2018-07-19 – 2018-07-25 | yyyy-mm-dd | recorded |
Site | Site as the habitat; DH = Dryas heath, CH = Cassiope heath and SB = snowbed | categorical | CH – SB | defined | |
Treatment | Warming treatment; CTL = ambient conditions, OTC = warmed by Open top chamber (OTC) | categorical | CTL – OTC | defined | |
PlotID | Unique ID as the combination of Site and number; SB-1 | categorical | 8-OTC – SB-9 | defined | |
Individual_nr | Individual number | numeric | 1–5 | defined | |
ID | Unique leaf ID consisting of 3 letters and 4 numbers | categorical | AEC8296 – CMO6669 | defined | |
Taxon | Species name including genus and species | categorical | lopecurus ovatus – trisetum spicatum | identified | |
Trait | Plant functional leaf trait including plant height, wet/dry mass, leaf area, leaf thickness, specific leaf area, leaf dry matter content, carbon, nitrogen and phosphorus content, CN and NP ratio, d13C and d15N isotope ratio | categorical | C_percent – Wet_Mass_g | defined | |
Value | Leaf trait value | numeric | −34.173 – 401.5 | cm, g, cm2, mm, cm2/g, percentage, permil | recorded |
Elevation_m | Elevation of site | numeric | Inf–Inf | m a.s.l. | recorded |
Latitude_N | Latitude of site | numeric | Inf–Inf | Degree north | recorded |
Longitude_E | Longitude of site | numeric | Inf–Inf | Degree east | recorded |
Functional_group | Plant functional group; vascular | categorical | vascular – vascular | identified |
