Baseline and Future (Shared Socio-economic Pathways 1-2.6 and 3-7.0 for the 2050s) Climate Suitability Maps for 23 Tree Species Prioritized for Ecosystem Restoration in Côte d'Ivoire

Climate suitability scores were calculated for 23 tree species prioritized for ecosystem restoration in Côte d'Ivoire. We obtained globally observed environmental ranges for these species from the TreeGOER database (Kindt 2023). The climate scoring system is the same that is used in the GlobalUsefulNativeTrees and EcoregionsTreeFinder databases: Score = 3 means that in 'environmental space' the planting site occurs within the 25% - 75% species's range (as documented in the TreeGOER) for all variables Score = 2 corresponds to the 5% - 95% species's range for all variables Score = 1 corresponds to the 0% - 100% species's range for all variables Score = 0.5 means that the planting site occurs outside the 0% - 100% species's range for some of the variables, but for heat-related bioclimatic variables (used to produce the maps shown here: BIO01, monthCountByTemp10, growingDegDays5, BIO05 and BIO06) to be below the minimum (‘too cold but not too hot’) and for water-related bioclimatic variables (used here: BIO12, climaticMoistureIndex, BIO16, BIO17 and MCWD) to be above the maximum (‘too wet but not too dry’) Score = 0 means that the planting site occurs outside the 0% - 100% species's range for some of the variables Climate scores were obtained for future climates (2050s: 2041-2060) from the median values from 24 Global Climate Models (GCMs) for Shared Socio-Economic Pathway (SSP) 1-2.6 and from 22 GCMs for SSP 3-7.0. Future and baseline bioclimatic layers were processed from raster layers obtained from WorldClim 2.1 at resolutions of 2.5 arc-minutes. Similar methods were used to obtain median values for the ClimateForecasts and CitiesGOER databases. Calculations of climate scores were made with similar scripting pipelines in the R statistical environment as documented here: https://rpubs.com/Roeland-KINDT/1168650. These scripts use similar calculations methods as those used for the global case studies of the TreeGOER manuscript (Kindt 2023), and used internally in the GlobalUsefulNativeTrees and EcoregionsTreeFinder online databases. Interested readers should especially refer to the TreeGOER manuscript for further details on methods used and their justification. Alternative future climate maps were obtained by calculating climate scores for each GCM and SSP separately, then counting the number of GCMs that projected that the species would be suitable under the future climatic conditions. A species was estimated to be suitable for a particular combination of GCM and SSP if its score was 1 or above. The maps distinguished areas where 33% or fewer of the GCMs predicted that the species would be suitable, and areas where 66% or more of the GCMs predicted that the species would be suitable. Those thresholds correspond to the Mastrandea et al. (2011) likelihood scale, which was adopted earlier in another climate change atlas (Kindt et al. 2023b; https://atlas.worldagroforestry.org/). A separate mapping category shows where 66% or more GCMs had a climate score of 2 or 3. Percentage of GCMs projecting that the species is suitable Count of GCMs for SSP 1-2.6 Count of GCMs for SSP 3-7.0 0 % 0 0 <= 33 % ('Unlikely') 1 - 8 1 - 7 33 % < percentage < 66 % 9 - 15 8 - 14 >= 66 % ('Likely') 16 - 24 15 - 22 >= 66 % with a Climate Score > 1 ('Likely') 16 - 24 15 - 22 The maps include red polygons showing the country outlines of Côte d'Ivoire, Ghana and Guinea obtained from the GADM database. The first map for the baseline climate includes presence observations in the country obtained from the RAINBIO database (Dauby et al. 2016) and from the Global Biodiversity Information Facility (filtered from the occurrences that informed the TreeGOER database; GBIF.org 2021 GBIF Occurrence Download https://doi.org/10.15468/dl.77gcvq). The MS Excel file contains columns that include information from World Flora Online, including hyperlinks to this online flora. References Kindt, R. (2023). TreeGOER: A database with globally observed environmental ranges for 48,129 tree species. Global Change Biology, 00, 1–16. https://onlinelibrary.wiley.com/doi/10.1111/gcb.16914. Kindt, R. (2024). TreeGOER: Tree Globally Observed Environmental Ranges (2024.07) [Data set]. Zenodo. https://doi.org/10.5281/zenodo.13132613 Kindt, R., Graudal, L., Lillesø, JP.B. et al. (2023a). GlobalUsefulNativeTrees, a database documenting 14,014 tree species, supports synergies between biodiversity recovery and local livelihoods in landscape restoration. Sci Rep 13, 12640. https://doi.org/10.1038/s41598-023-39552-1 Kindt R & Pedercini 2025 EcoregionsTreeFinder—A Global Dataset Documenting the Abundance of Observations of >45,000 Tree Species in 828 Terrestrial Ecoregions. Global Ecol Biogeogr, 34: e70064 https://doi.org/10.1111/geb.70064 Kindt R, Abiyu A, Borchardt P, Dawson IK, Demissew S, Graudal L, Jamnadass R, Lillesø J-PB, Moestrup S, Pedercini F, Wieringa JJ, Wubalem T. 2023. 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PhytoKeys 74: 1-18. https://doi.org/10.3897/phytokeys.74.9723 Funding This climate change atlas was created within the context of an agreement between The International Centre for Research in Agroforestry (ICRAF) and WORLD UNIVERSITY SERVICE OF CANADA (WUSC) for a Nature-based climate adaptation project in the Guinean forests of West Africa (NbS Guinean Forests) funded by Global Affairs Canada.