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Article Dans Une Revue Nature Communications Année : 2022

Global patterns of vascular plant alpha diversity

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Milan Chytrý
Franziska Schrodt
Luis Cayuela
Michele de Sanctis
Mohamed Hatim
Florian Jansen
Robert Peet
Petr Petřík
Valério Pillar
Brody Sandel
  • Fonction : Auteur
Marco Schmidt
Zhiyao Tang
Peter van Bodegom
Kiril Vassilev
  • Fonction : Auteur
Cyrille Violle
  • Fonction : Auteur
Esteban Alvarez-Davila
  • Fonction : Auteur
Priya Davidar
Jiri Dolezal
Bruno Hérault
Antonio Galán-De-Mera
Jorge Jiménez
Stephan Kambach
Sebastian Kepfer-Rojas
Holger Kreft
Felipe Lezama
  • Fonction : Auteur
Reynaldo Linares-Palomino
Abel Monteagudo Mendoza
  • Fonction : Auteur
Justin N’dja
  • Fonction : Auteur
Oliver Phillips
Gonzalo Rivas-Torres
  • Fonction : Auteur
Petr Sklenář
  • Fonction : Auteur
Karina Speziale
Ben Strohbach
Rodolfo Vásquez Martínez
  • Fonction : Auteur
Hua-Feng Wang
  • Fonction : Auteur
Karsten Wesche
Helge Bruelheide

Résumé

Abstract 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.

Dates et versions

hal-03779276 , version 1 (16-09-2022)

Identifiants

Citer

Francesco Maria Sabatini, Borja Jiménez-Alfaro, Ute Jandt, Milan Chytrý, Richard Field, et al.. Global patterns of vascular plant alpha diversity. Nature Communications, 2022, 13 (1), pp.4683. ⟨10.1038/s41467-022-32063-z⟩. ⟨hal-03779276⟩
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