PANGAEA_995054 Seawater carbonate chemistry and mortality rates, oxidative stress and enzyme activities of blue mussels (Mytilus edulis) Iddar, Abdelghani; El Mzibri, Mohammed; Laissaoui, Abdelmourhit; Metian, Marc; Dupont, Sam Seawater carbonate chemistry and mortality rates, oxidative stress and enzyme activities of blue mussels (Mytilus edulis) 2026-05-15 PANGAEA Dataset https://doi.pangaea.de/10.1594/PANGAEA.995054 Investigator Abdelghani Iddar abdeliddar@gmail.com Investigator Yan Yang yangyan@xmu.edu.cn Earth Science Type of study Species, unique identification Species, unique identification (URI) Species, unique identification (Semantic URI) Treatment Day of experiment Mortality Identification Month Shell length Tissue type Malondialdehyde, per protein mass Thiol concentration Glyceraldehyde-3-phosphate dehydrogenase activity, unit per protein mass Succinate dehydrogenase activity, unit per protein mass Catalase activity, unit per protein mass Superoxide dismutase activity, unit per protein mass Salinity pH, NBS scale pH, standard deviation Temperature, water Temperature, water, standard deviation Oxygen, dissolved Oxygen, dissolved, standard deviation Alkalinity, total Partial pressure of carbon dioxide (water) at sea surface temperature (wet air) Partial pressure of carbon dioxide, standard deviation Calcite saturation state Calcite saturation state, standard deviation Aragonite saturation state Aragonite saturation state, standard deviation Carbonate system computation flag pH, total scale Carbon dioxide Fugacity of carbon dioxide (water) at sea surface temperature (wet air) Bicarbonate ion Carbonate ion Carbon, inorganic, dissolved geoscientificInformation Animalia Benthic animals Benthos Coast and continental shelf Containers and aquaria (20-1000 L or < 1 m**2) Experiment Growth/Morphology Laboratory experiment Mollusca Mortality/Survival Mytilus edulis North Atlantic Ocean acidification Other metabolic rates Other studied parameter or process Plage_des_Nations Single species Temperate Calculated using seacarb after Nisumaa et al. (2010) Complete 34.1407 34.1407 -6.7444 -6.7444 OA-ICC Ocean Acidification International Coordination Centre unrestricted CC-BY-4.0: Creative Commons Attribution 4.0 International English PANGAEA Data Publisher for Earth & Environmental Science https://www.pangaea.de/ Data Center Contact Michael Diepenbroek info@pangaea.de

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Bremen Bremen 28359 Germany online 20371 data points text/tab-separated-values Iddar, Abdelghani; El Mzibri, Mohammed; Laissaoui, Abdelmourhit; Metian, Marc; Dupont, Sam (2026): Chronic exposure to low pH negatively impacts blue mussels ( Mytilus edulis ) from an intertidal zone. Marine Biology Research, 22(1-2), 3-17, https://doi.org/10.1080/17451000.2025.2597185 Nisumaa, Anne-Marin; Pesant, Stephane; Bellerby, Richard G J; Delille, Bruno; Middelburg, Jack J; Orr, James C; Riebesell, Ulf; Tyrrell, Toby; Wolf-Gladrow, Dieter A; Gattuso, Jean-Pierre (2010): EPOCA/EUR-OCEANS data compilation on the biological and biogeochemical responses to ocean acidification. Earth System Science Data, 2(2), 167-175, https://doi.org/10.5194/essd-2-167-2010 Yang, Yan; Brockmann, Patrick; Galdino, Carolina; Schindler, Uwe; Gazeau, Frédéric (2024): An update of data compilation on the biological response to ocean acidification and overview of the OA-ICC data portal. Earth System Science Data, 16(8), 3771-3780, https://doi.org/10.5194/essd-16-3771-2024 Yang, Yan; Hansson, L; Gattuso, Jean-Pierre (2016): Data compilation on the biological response to ocean acidification: an update. Earth System Science Data, 8(1), 79-87, https://doi.org/10.5194/essd-8-79-2016 Gattuso, Jean-Pierre; Epitalon, Jean-Marie; Lavigne, Héloïse; Orr, James; Gentili, Bernard; Hagens, Mathilde; Hofmann, Andreas; Mueller, Jens-Daniel; Proye, Aurélien; Rae, James; Soetaert, Karline (2024): seacarb: seawater carbonate chemistry with R. R package version 3.3.3. https://cran.r-project.org/web/packages/seacarb/index.html

This study aimed to determine whether these short-term fluctuations enable blue mussels (Mytilus edulis) to endure long-term exposure to low pH using biological indicators (mortality rates, oxidative stress and enzyme activities). Mussels were collected from an intertidal zone in the western coast of Morocco and exposed for 6 months to seawater pH ranging from 6.6 to 8.0. This dataset is included in the OA-ICC data compilation maintained in the framework of the IAEA Ocean Acidification International Coordination Centre (see https://oa-icc.ipsl.fr). Original data were provided by the author of the related paper (see Related to) to the OA-ICC data curator. In order to allow full comparability with other ocean acidification data sets, the R package seacarb (Gattuso et al, 2024) was used to compute a complete and consistent set of carbonate system variables, as described by Nisumaa et al. (2010). In this dataset the original values were archived in addition with the recalculated parameters (see related PI). The date of carbonate chemistry calculation by seacarb is 2026-05-14. ** For all details see the full metadata description at "https://doi.pangaea.de/10.1594/PANGAEA.995054"!

http://mel.xmu.edu.cn/en/ https://cran.r-project.org/web/packages/seacarb/index.html seacarb: seawater carbonate chemistry with R. R package version 3.3.3 https://doi.org/10.1080/17451000.2025.2597185 Chronic exposure to low pH negatively impacts blue mussels ( Mytilus edulis ) from an intertidal zone https://doi.org/10.5194/essd-16-3771-2024 An update of data compilation on the biological response to ocean acidification and overview of the OA-ICC data portal https://doi.org/10.5194/essd-2-167-2010 Calculated using seacarb after Nisumaa et al. (2010) https://doi.org/10.5194/essd-2-167-2010 EPOCA/EUR-OCEANS data compilation on the biological and biogeochemical responses to ocean acidification https://doi.org/10.5194/essd-8-79-2016 Data compilation on the biological response to ocean acidification: an update https://en.wikipedia.org/wiki/Catalase Catalase activity, unit per protein mass https://en.wikipedia.org/wiki/Malondialdehyde Malondialdehyde, per protein mass https://en.wikipedia.org/wiki/Superoxide_dismutase Superoxide dismutase activity, unit per protein mass https://www.iaea.org/services/oa-icc/science-and-collaboration/data-access-and-management OA-ICC DIF 9.4 2026-05-15 2026-05-19