Dispersal limitation shapes distance-decay patterns of European spiders at the continental scale - Université de Montpellier Accéder directement au contenu
Article Dans Une Revue Global Ecology and Biogeography Année : 2024

Dispersal limitation shapes distance-decay patterns of European spiders at the continental scale

Résumé

Aim To assess the relative relevance of dispersal limitation and species sorting as drivers of spatial turnover between spider faunas of European territories. Location Continental Europe. Time period Present. Major taxa studied Spiders (Order Araneae). Methods We analysed how distance-decay patterns differ between northern and southern Europe (broadly, territories covered vs. not covered by ice sheets during the last glacial maximum, respectively) in 15 spider families, using standardized distances to allow a direct comparison between parameters (i.e. slope and intercept) of climatic and spatial distance-decay models. Thus, we assessed North–South differences in parameters of spatial and, independently, climatic distance-decay models, and whether those differences are explained by family-specific traits related to dispersal ability. Results Climatic and spatial distance-decay patterns are very similar in northern Europe, where climatic and spatial distances are highly correlated. In contrast, slopes are steeper in spatial than in climatic distance-decay curves in southern Europe, where climatic and spatial distances are decoupled. Moreover, family traits related to dispersal ability explained the North–South difference in spatial distance-decay slopes, as well as the amount of nestedness-resultant dissimilarity between southern and northern spider faunas. Main conclusions Our results suggest that differences in beta diversity patterns between northern and southern Europe reflect the strength of dispersal limitation in spiders, which varies across families and leads to different degrees of disequilibrium with current climatic conditions depending on the taxon. Moreover, in the South of Europe, where spatial and climatic distances are uncorrelated, spatial distance-decay models are steeper and have larger explanatory power than climatic distance-decay models, which suggests that dispersal limitation is the main factor shaping current beta diversity patterns of European spiders at the continental scale.

Dates et versions

hal-04531683 , version 1 (04-04-2024)

Identifiants

Citer

Ramiro Martín-Devasa, Alberto Jiménez-Valverde, Fabien Leprieur, Andrés Baselga, Carola Gómez-Rodríguez. Dispersal limitation shapes distance-decay patterns of European spiders at the continental scale. Global Ecology and Biogeography, 2024, 33 (4), pp.e13810. ⟨10.1111/geb.13810⟩. ⟨hal-04531683⟩
15 Consultations
0 Téléchargements

Altmetric

Partager

Gmail Facebook X LinkedIn More