Liang J. J. auteur aut IRD Gamarra J. G. P. auteur aut IRD Picard N. auteur aut IRD Ibanez Thomas auteur aut IRD et al. auteur aut IRD text journalArticle eng text/pdf born digital access The latitudinal diversity gradient (LDG) is one of the most recognized global patterns of species richness exhibited across a wide range of taxa. Numerous hypotheses have been proposed in the past two centuries to explain LDG, but rigorous tests of the drivers of LDGs have been limited by a lack of high-quality global species richness data. Here we produce a high-resolution (0.025 degrees x 0.025 degrees) map of local tree species richness using a global forest inventory database with individual tree information and local biophysical characteristics from similar to 1.3 million sample plots. We then quantify drivers of local tree species richness patterns across latitudes. Generally, annual mean temperature was a dominant predictor of tree species richness, which is most consistent with the metabolic theory of biodiversity (MTB). However, MTB underestimated LDG in the tropics, where high species richness was also moderated by topographic, soil and anthropogenic factors operating at local scales. Given that local landscape variables operate synergistically with bioclimatic factors in shaping the global LDG pattern, we suggest that MTB be extended to account for co-limitation by subordinate drivers. specialized MONDE 082 021 020 [27 ] 2022 2397-334X https://www.documentation.ird.fr/hor/fdi:010085943 10.1038/s41559-022-01831-x 2397-334X [F B010085943] https://www.documentation.ird.fr/hor/fdi:010085943 https://www.documentation.ird.fr/intranet/publi/2022-09/010085943.pdf Accès réservé (Intranet de l'IRD) IRD - Base Horizon / Pleins textes 2022-09-28 2025-02-24 fdi:010085943 fre