[article]
| Titre : |
Habitats hold an evolutionary signal of past climatic refugia |
| Type de document : |
Imprimé |
| Auteurs : |
María Begoña García ; Hector Miranda ; Manuel Pizarro ; Xavier Font i Castell ; Cristina Roquet ; Penélope González-Sampériz |
| Année de publication : |
2022 |
| Article en page(s) : |
1665-1688 |
| Langues : |
Anglais (eng) |
| Catégories : |
[CBNPMP-Thématique] Endémisme
[CBNPMP-Thématique] Habitats
[CBNPMP-Thématique] Phylogénie (liens existant entre espèces apparentées)
[CBNPMP-Thématique] Forêts (habitat)
|
| Résumé : |
Climatic refugia have often been associated with hotspots of richness and endemism, and identified on the basis of molecular or paleobotanical information. Here, we apply a phylogenetic analysis to 18,000 plant communities distributed across the Pyrenees, a south European mountain range, to identify climatic refugia from imprints of relictuality inferred from species’ evolutionary distinctiveness (ED). We produced a genus-level phylogenetic tree to calculate the standardized mean ED value of plant communities (cED). Then, we explored which habitats concentrate the plant communities with the highest cED and the interrelated effect of past (long-term climatic stability) and present (topographic and spatial position) factors. Results show strong differences of cED among habitats: forests ranked first, followed by some open habitats like high altitude wetlands. Climate stability and roughness positively influenced cED. A weak negative association resulted between the two diversity measurements (richness and endemism rate) and also with cED. We propose that forests acted as “mobile refugia” during the glacial-interglacial periods, supported by paleoenvironmental reconstructions revealing continuous presence at regional scale of key broad-leaved trees at that time. Azonal habitats like the endemic-poor humid communities at high elevation would have also played an important role as more permanent microrefugia. Our approach identifies a variety of habitats and plant assemblages that have successfully withstood past climate change in different ways, and therefore would hold an important evolutionary potential to cope with current climate change. Given their potential role in preserving biodiversity, they should be integrated in future conservation agendas. |
| Lien pérenne : |
DOI : 10.1007/s10531-022-02419-4  |
| Permalink : |
https://biblio.cbnpmp.fr/index.php?lvl=notice_display&id=148886 |
in Biodiversity and conservation > 31 (2022) . - 1665-1688
García, María Begoña, Miranda, Hector, Pizarro, Manuel, Font i Castell, Xavier, Roquet, Cristina, González-Sampériz, Penélope
2022
Habitats hold an evolutionary signal of past climatic refugia.
Biodiversity and conservation, 31: 1665-1688.
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Affiner la rechercheHabitats hold an evolutionary signal of past climatic refugia / María Begoña García in Biodiversity and conservation, 31 (2022)
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