Global patterns of vascular plant alpha diversity

Sabatini Francesco Maria, Jiménez-Alfaro Borja, Jandt Ute, Chytrý Milan, Field Richard, Kessler Michael, Lenoir Jonathan, Schrodt Franziska, Wiser Susan, Arfin Khan Mohammed A. S., Attorre Fabio, Cayuela Luis, De Sanctis Michele, Dengler Jürgen, Haider Sylvia, Hatim Mohamed Z., Indreica Adrian, Jansen Florian, Pauchard Anibal, Peet Robert K., Petřík Petr, Pillar Valério D., Sandel Brody, Schmidt Marco, Tang Zhiyao, Van Bodegom Peter, Vassilev Kiril, Violle Cyrille, Álvarez-Dávila Esteban, Davidar Priya, Dolezal Jiri, Herault Bruno, et al.. 2022. Global patterns of vascular plant alpha diversity. Nature Communications, 13:4683, 16 p.

https://doi.org/10.1038/s41467-022-32063-z

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Url - jeu de données - Entrepôt autre : https://zenodo.org/badge/latestdoi/433417900 / Url - jeu de données - Entrepôt autre : https://doi.org/10.25829/idiv.3506-p4c0mo / Url - jeu de données - Entrepôt autre : https://www.idiv.de/en/splot

Résumé : Global patterns of regional (gamma) plant diversity are relatively well known, but whether these patterns hold for local communities, and the dependence on spatial grain, remain controversial. Using data on 170,272 georeferenced local plant assemblages, we created global maps of alpha diversity (local species richness) for vascular plants at three different spatial grains, for forests and non-forests. We show that alpha diversity is consistently high across grains in some regions (for example, Andean-Amazonian foothills), but regional 'scaling anomalies' (deviations from the positive correlation) exist elsewhere, particularly in Eurasian temperate forests with disproportionally higher fine-grained richness and many African tropical forests with disproportionally higher coarse-grained richness. The influence of different climatic, topographic and biogeographical variables on alpha diversity also varies across grains. Our multi-grain maps return a nuanced understanding of vascular plant biodiversity patterns that complements classic maps of biodiversity hotspots and will improve predictions of global change effects on biodiversity.

Mots-clés Agrovoc : biodiversité, distribution géographique, forêt tropicale, modélisation environnementale, écosystème forestier, changement climatique, communauté végétale

Mots-clés géographiques Agrovoc : Madagascar

Mots-clés libres : Biodiversity, Macroecology, Plant ecology

Champ stratégique Cirad : CTS 1 (2019-) - Biodiversité

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