Species living in harsh environments have low clade rank and are localized on former Laurasian continents: a case study of Willemia (Collembola) - Archive ouverte HAL Accéder directement au contenu
Article Dans Une Revue Journal of Biogeography Année : 2014

Species living in harsh environments have low clade rank and are localized on former Laurasian continents: a case study of Willemia (Collembola)

Résumé

Aim Certain species have few living relatives, i.e., occupy low clade ranks. Hence, they possess high conservation value and scientific interest as unique representatives of ancient lineages. However, we do not know whether particular environments favour the maintenance of low clade ranks or whether the distribution of environments across the globe affects the global distribution of clade ranks and, hence evolutionary uniqueness. In this study, we tested whether and how harsh environments decrease the clade ranks of the species that inhabit them. Location Global Methods We described the phylogeny of the collembolan genus Willemia by a parsimonious method based on 52 morphological characters and estimated the species' use of harsh environments (polar, high-mountain, desert, polluted, waterlogged, saline, and acidic) from 248 publications. Results We found that the use of different types of harsh environments is maintained among close relatives and has similar phylogenetic signals (except for the use of salinity). The use of harsh environments might therefore affect the diversification of lineages. Correcting for the phylogenetic non-independence of species, we found that species using harsh environments have comparatively low clade ranks. We also found that species using harsh environments occur almost exclusively on former Laurasian continents and that as a statistical consequence, Laurasian species tend to have lower clade ranks. Main Conclusions We suggest that harsh environments maintain low-clade-rank species by decreasing, simultaneoulsy or successively, extinction and speciation, which may eventually explain the major variation in clade rank across the globe.
Fichier principal
Vignette du fichier
JBI-12-0428-R1_incl_appendices_revision2.pdf (2.09 Mo) Télécharger le fichier
Origine : Fichiers produits par l'(les) auteur(s)

Dates et versions

hal-00940083 , version 1 (31-01-2014)

Identifiants

Citer

Andreas Prinzing, Cyrille d'Haese, Sandrine Pavoine, Jean-François Ponge. Species living in harsh environments have low clade rank and are localized on former Laurasian continents: a case study of Willemia (Collembola). Journal of Biogeography, 2014, 41 (2), pp.353-365. ⟨10.1111/jbi.12188⟩. ⟨hal-00940083⟩
322 Consultations
327 Téléchargements

Altmetric

Partager

Gmail Facebook X LinkedIn More