Coral reef fishes reveal strong divergence in the prevalence of traits along the global diversity gradient. Issue 1961 (27th October 2021)

• Record Type: Journal Article
• Authors: Parravicini, V.; Bender, M. G.; Villéger, S.; Leprieur, F.; Pellissier, L.; Donati, F. G. A.; Floeter, S. R.; Rezende, E. L.; Mouillot, D.; Kulbicki, M.
• Is Part Of: Proceedings. Volume 288:Issue 1961(2021)
• Publication Date: 2021-10-27
• Subjects: coral reefs -- biogeography -- functional traits -- assembly rules; Biology -- Periodicals; 570.5
• DOI: 10.1098/rspb.2021.1712
• Languages: English
• ISSNs: 0962-8452

Abstract

Abstract : Coral reefs are experiencing declines due to climate change and local human impacts. While at a local scale these impacts induce biodiversity loss and shifts in community structure, previous biogeographical analyses recorded consistent taxonomic structure of fish communities across global coral reefs. This suggests that regional communities represent a random subset of the global species and traits pool, whatever their species richness. Using distributional data on 3586 fish species and latest advances in species distribution models, we show marked gradients in the prevalence of size classes and diet categories across the biodiversity gradient. This divergence in trait structure is best explained by reef isolation during past unfavourable climatic conditions, with large and piscivore fishes better represented in isolated areas. These results suggest the risk of a global community re-organization if the ongoing climate-induced reef fragmentation is not halted.