Publications des scientifiques de l'IRD

Dagallier Lpmj, Janssens S. B., Dauby Gilles, Blach-Overgaard A., Mackinder B. A., Droissart Vincent, Svenning J. C., Sosef M. S. M., Stevart T., Harris D. J., Sonke B., Wieringa J. J., Hardy O. J., Couvreur Thomas. (2019). Cradles and museums of generic plant diversity across tropical Africa. New Phytologist, 225 (5), p. 2196-2213. ISSN 0028-646X.

Titre du document
Cradles and museums of generic plant diversity across tropical Africa
Année de publication
2019
Type de document
Article référencé dans le Web of Science WOS:000499888700001
Auteurs
Dagallier Lpmj, Janssens S. B., Dauby Gilles, Blach-Overgaard A., Mackinder B. A., Droissart Vincent, Svenning J. C., Sosef M. S. M., Stevart T., Harris D. J., Sonke B., Wieringa J. J., Hardy O. J., Couvreur Thomas
Source
New Phytologist, 2019, 225 (5), p. 2196-2213 ISSN 0028-646X
Determining where species diversify (cradles) and persist (museums) over evolutionary time is fundamental to understanding the distribution of biodiversity and for conservation prioritization. Here, we identify cradles and museums of angiosperm generic diversity across tropical Africa, one of the most biodiverse regions on Earth. Regions containing nonrandom concentrations of young (neo-) and old (paleo-) endemic taxa were identified using distribution data of 1719 genera combined with a newly generated time-calibrated mega-phylogenetic tree. We then compared the identified regions with the current network of African protected areas (PAs). At the generic level, phylogenetic diversity and endemism are mainly concentrated in the biogeographically complex region of Eastern Africa. We show that mountainous areas are centres of both neo- and paleo-endemism. By contrast, the Guineo-Congolian lowland rain forest region is characterized by widespread and old lineages. We found that the overlap between centres of phylogenetic endemism and PAs is high (> 85%). We show the vital role played by mountains acting simultaneously as cradles and museums of tropical African plant biodiversity. By contrast, lowland rainforests act mainly as museums for generic diversity. Our study shows that incorporating large-scale taxonomically verified distribution datasets and mega-phylogenies lead to an improved understanding of tropical plant biodiversity evolution.
Plan de classement
Sciences du monde végétal [076] ; Etudes, transformation, conservation du milieu naturel [082]
Description Géographique
AFRIQUE SUBSAHARIENNE ; ZONE TROPICALE
Localisation
Fonds IRD [F B010077383]
Identifiant IRD
fdi:010077383
Contact