Integrating laboratory experiments and biogeographic modelling approaches to understand sensitivity to ocean warming in rare and common marine annelids

Massamba-N'Siala, Gloria, Reygondeau, Gabriel, Simonini, Roberto, Cheung, William W. L., Prevedelli, Daniela et Calosi, Piero ORCID: https://orcid.org/0000-0003-3378-2603 (2022). Integrating laboratory experiments and biogeographic modelling approaches to understand sensitivity to ocean warming in rare and common marine annelids. Oecologia, 199 . pp. 453-270.

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Résumé

Among ectotherms, rare species are expected to have a narrower thermal niche breadth and reduced acclimation capacity and thus be more vulnerable to global warming than their common relatives. To assess these hypotheses, we experimentally quantified the thermal sensitivity of seven common, uncommon, and rare species of temperate marine annelids of the genus Ophryotrocha to assess their vulnerability to ocean warming. We measured the upper and lower limits of physiological thermal tolerance, survival, and reproductive performance of each species along a temperature gradient (18, 24, and 30 °C). We then combined this information to produce curves of each species’ fundamental thermal niche by including trait plasticity. Each thermal curve was then expressed as a habitat suitability index (HSI) and projected for the Mediterranean Sea and temperate Atlantic Ocean under a present day (1970–2000), mid- (2050–2059) and late- (2090–2099) 21st Century scenario for two climate change scenarios (RCP2.6 and RCP8.5). Rare and uncommon species showed a reduced upper thermal tolerance compared to common species, and the niche breadth and acclimation capacity were comparable among groups. The simulations predicted an overall increase in the HSI for all species and identified potential hotspots of HSI decline for uncommon and rare species along the warm boundaries of their potential distribution, though they failed to project the higher sensitivity of these species into a greater vulnerability to ocean warming. In the discussion, we provide some caveats on the implications of our results for conservation efforts. -- Keywords : Acclimation ; Commonness ; Macroecology ; Macrophysiology ; Rarity ; Thermal niche.

Type de document :	Article
Validation par les pairs :	Oui
Information complémentaire :	Cette version de l'article a été acceptée pour publication, après examen par les pairs, mais n'est pas la version officielle et peut ne pas refléter toutes les améliorations ou corrections apportées après l'acceptation. La version officielle est disponible en ligne à l'adresse suivante : https://doi.org/10.1007/s00442-022-05202-y. L'utilisation de cette version acceptée est soumise aux conditions d'utilisation des manuscrits acceptés de l'éditeur Springer Nature. This version of the article has been accepted for publication, after peer review (when applicable) but is not the Version of Record and does not reflect post-acceptance improvements, or any corrections. The Version of Record is available online at: https://doi.org/10.1007/s00442-022-05202-y. Use of this Accepted Version is subject to the publisher’s Accepted Manuscript terms of use.
Départements et unités départementales :	Département de biologie, chimie et géographie
Date de dépôt :	14 juin 2023 13:17
Dernière modification :	02 oct. 2023 15:07
URI :	https://semaphore.uqar.ca/id/eprint/2342