Functional changes across marine habitats due to oceanacidification

• Published in: Global Change Biology
• Main Authors: Teixidó, Núria, Carlot, Jérémy, Alliouane, Samir, Ballesteros, Enric, de Vittor, Cinzia, Gambi, Maria Cristina, Gattuso, Jean‐Pierre, Kroeker, Kristy, Micheli, Fiorenza, Mirasole, Alice, Parravacini, Valeriano, Villéger, Sébastien
• Other Authors: Stazione Zoologica Anton Dohrn (SZN), Laboratoire d'océanographie de Villefranche (LOV), Institut national des sciences de l'Univers (INSU - CNRS)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Institut de la Mer de Villefranche (IMEV), Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS), Centre d'Estudis Avançats de Blanes (CEAB), Consejo Superior de Investigaciones Cientificas España = Spanish National Research Council Spain (CSIC), National Institute of Oceanography and Applied Geophysics (OGS), Institut du Développement Durable et des Relations Internationales (IDDRI), Institut d'Études Politiques IEP - Paris, University of California Santa Cruz (UC Santa Cruz), University of California (UC), Hopkins Marine Station Stanford, Stanford University, Centre de recherches insulaires et observatoire de l'environnement (CRIOBE), Université de Perpignan Via Domitia (UPVD)-École Pratique des Hautes Études (EPHE), Université Paris Sciences et Lettres (PSL)-Université Paris Sciences et Lettres (PSL)-Centre National de la Recherche Scientifique (CNRS), MARine Biodiversity Exploitation and Conservation - MARBEC (UMR MARBEC ), Institut de Recherche pour le Développement (IRD)-Institut Français de Recherche pour l'Exploitation de la Mer (IFREMER)-Centre National de la Recherche Scientifique (CNRS)-Université de Montpellier (UM)
• Format: Article in Journal/Newspaper
• Language: English
• Published: HAL CCSD 2024
• Subjects: ocean acidification; biodiversity; natural CO2 vents; Mediterranean Sea; species traits; functional diversity; [SDE.MCG]Environmental Sciences/Global Changes; [SDU.STU.OC]Sciences of the Universe [physics]/Earth Sciences/Oceanography; Ocean acidification
• Online Access: https://hal.science/hal-04417178; https://hal.science/hal-04417178/document; https://hal.science/hal-04417178/file/50_Teixid%C3%B3%20et%20al%202024%20%20Functional%20changes%20across%20marine%20habitats%20due%20to%20ocean%20acidification%20GCB.pdf; https://doi.org/10.1111/gcb.17105

International audience Global environmental change drives diversity loss and shifts in community structure. A key challenge is to better understand the impacts on ecosystem function and to connect species and trait diversity of assemblages with ecosystem properties that are in turn linked to ecosystem functioning. Here we quantify shifts in species composition and trait diversity associated with ocean acidification (OA) by using field measurements at marine CO2 vent systems spanning four reef habitats across different depths in a temperate coastal ecosystem. We find that both species and trait diversity decreased, and that ecosystem properties (understood as the interplay between species, traits, and ecosystem function) shifted with acidification. Furthermore, shifts in trait categories such as autotrophs, filter feeders, herbivores, and habitat-forming species were habitat-specific, indicating that OA may produce divergent responses across habitats and depths. Combined, these findings reveal the importance of connecting species and trait diversity of marine benthic habitats with key ecosystem properties to anticipate the impacts of global environmental change. Our results also generate new insights on the predicted general and habitat-specific ecological consequences of OA.