Minimizing the impact of ocean acidification requires an understanding of species responses and environmental variability of population habitats. Whereas the literature is growing rapidly, emerging results suggest unresolved species- or population-specific responses. Here we present a meta-analysis synthesizing experimental studies examining the effects of pCO2 on biological traits in marine invertebrates. At the sampling locations of experimental animals, we determined environmental pCO2 conditions by integrating data from global databases and pCO2 measurements from buoys. Experimental pCO2 scenarios were compared with upper pCO2 using an index considering the upper environmental pCO2. For most taxa, a statistically significant negative linear relationship was observed between this index and mean biological responses, indicating that the impact of a given experimental pCO2 scenario depends on the deviation from the upper pCO2 level experienced by local populations. Our results highlight the importance of local biological adaptation and the need to consider present pCO2 natural variability while interpreting experimental results.
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Environmental stability and phenotypic plasticity benefit the cold-water coral Desmophyllum dianthus in an acidified fjord
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This work was supported by FONDECYT project number 1210171 to C.A.V. and 1181300 to B.R.B. Additional support from the Agencia Nacional de Investigación y Desarrollo (ANID)–Millennium Science Initiative Program–Millennium Institute of Oceanography (IMO) ICN12_019, the Coastal Socio-Ecological Millennium Institute (SECOS) ICN2019_015 and the Millennium Science Initiative Nucleus–Understanding Past coastal upWelling systems and Environmental Local and Lasting impacts (UPWELL) NCN19-153 is also acknowledged. S.D. is funded by the Swedish Research Councils Formas. We greatly thank F. Gamonal from IMO for the design of Fig. 1.
The authors declare no competing interests.
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Supplementary Figs. 1–5 and Table 1.
Supplementary Dataset 1: pCO2 values extracted from the LDEO database version 2019 used in this study and separated by coastal regions. Date of sampling and coordinates of each position have been included.
Supplementary Dataset 2: List of all taxa, life stage CO2 values used for the different biological traits considered in our study.
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Vargas, C.A., Cuevas, L.A., Broitman, B.R. et al. Upper environmental pCO2 drives sensitivity to ocean acidification in marine invertebrates. Nat. Clim. Chang. 12, 200–207 (2022). https://doi.org/10.1038/s41558-021-01269-2