Global plant trait maps based on crowdsourced biodiversity monitoring and Earth observation - 1 km - All PFTs

This dataset consists of 31 plant functional trait maps at 1 km resolution with global extent. Plant functional traits are predicted as community-weighted means based on a synthesis of crowdsourced biodiversity data (GBIF species observations, sPlot vegetation surveys, and in situ trait measurements from the TRY trait database) modeled as a function of Earth observation data, including surface reflectance, climatic variables, soil properties, canopy height, and vegetation optical depth.This version of the maps includes traits sourced from all available plant functional types (PFT). PFT-specific maps are in progress and will be available in the future.Note: In addition to using the coefficient of variation and area of applicability layers of the maps, we encourage all who wish to use these maps to take particular note of the model performance for the traits of interest, which can be found both in the raster metadata as well as in Table A.1. of the manuscript. The model performance varies significantly across the traits, and so care should be used.GeoTIFF multilayer raster descriptionEach GeoTIFF is in Equal Area Scalable Earth projection (EPSG:6933). In addition to the trait predictions, two quality bands are provided. Model performance metrics are also included in the raster metadata.Band numberBand nameDescription1The predicted CWM trait values.2Coefficient of variationAn indicator of model uncertainty derived by comparing the predictions made during model cross-validation.3Area of applicabilityAn indicator of model reliability. The area of applicability indicates regions where predictor data used for prediction differs significantly from predictor values seen during model training (see Meyer and Pebesma, 2021).Trait tableTraitTRY trait nameTRY IDUnitPearson's rConduit element lengthWood vessel element length; stem conduit (vessel and tracheids) element length282µm0.45Dispersal unit lengthDispersal unit length237mm0.36LDMCLeaf dry mass per leaf fresh mass (leaf dry matter content, LDMC)47g g-10.47Leaf areaLeaf area (in case of compound leaves: leaflet, undefined if petiole is in- or excluded)3113mm20.59Leaf CLeaf carbon (C) content per leaf dry mass13mg g-10.55Leaf C/N ratioLeaf carbon/nitrogen (C/N) ratio146g g-10.57Leaf delta 15NLeaf nitrogen (N) isotope signature (delta 15N)78ppm0.56Leaf dry massLeaf dry mass (single leaf)55g0.50Leaf fresh massLeaf fresh mass163g0.49Leaf lengthLeaf length144mm0.49Leaf N (area)Leaf nitrogen (N) content per leaf area50g m-20.63Leaf N (mass)Leaf nitrogen (N) content per leaf dry mass14mg g-10.56Leaf PLeaf phosphorus (P) content per leaf dry mass15mg g-10.54Leaf thicknessLeaf thickness46mm0.52Leaf water contentLeaf water content per leaf dry mass (not saturated)3120g g-10.48Leaf widthLeaf width145mm0.51Plant heightPlant height (vegetative)3106m0.45Rooting depthRoot rooting depth6m0.60Seed germination rateSeed germination rate (germination efficiency)95days0.47Seed lengthSeed length27mm0.39Seed massSeed dry mass26mg0.47Seed numberSeed number per reproduction unit138-0.43SLALeaf area per leaf dry mass (specific leaf area, SLA or 1/LMA): undefined if petiole is in- or excluded)3117m2 kg-10.63SRLRoot length per root dry mass (specific root length, SRL)1080cm g-10.46SRL (fine)Fine root length per fine root dry mass (specific fine root length, SRL)614cm g-10.43SSDStem specific density (SSD) or wood density (stem dry mass per stem fresh volume)4g cm-30.59Stem conduit densityStem conduit density (vessels and tracheids)169mm-20.56Stem conduit diameterStem conduit diameter (vessels, tracheids)281µm0.60Stem diameterStem diameter21m0.48Wood fiber lengthsWood fiber lengths289µm0.39Wood ray densityWood rays per millimetre (wood ray density)297mm-10.22Plant functional traits used for modeling and trait map generation. "Trait" refers to a shortened version of the "TRY trait name", "TRY trait name" refers to the name used in the TRY trait database, and "TRY ID" is the identifier for the trait in the TRY trait database. "Pearson's r" is the cross-validated Pearson's correlation coefficient between the trait map and spatially independent sPlot community-weighted mean trait values. Experimental traits—model performance below the heuristic threshold of r=0.5. Please consider your use case before incorporating these trait maps into your analysis. Crowsourced biodiversity data:TRY Trait database Global Biodiversity Information Facility (GBIF)sPlotThese maps have been created in the framework of the PANOPS project. More information on this project is available at:https://uni-freiburg.de/enr-geosense/research/panops/https://gepris-extern.dfg.de/gepris/projekt/504978936?language=en