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dc.contributor.authorSokołowski, Adam
dc.contributor.authorŚwieżak, Justyna
dc.contributor.authorHallman, Anna
dc.contributor.authorOlsen, Anders Johny
dc.contributor.authorZiółkowska, Marcelina
dc.contributor.authorØverjordet, Ida Beathe
dc.contributor.authorNordtug, Trond
dc.contributor.authorAltin, Dag
dc.contributor.authorKrause, Daniel Franklin
dc.contributor.authorSalaberria, Iurgi
dc.contributor.authorSmolarz, Katarzyna
dc.identifier.citationScience of the Total Environment. 2021, 794 .en_US
dc.description.abstractUnderstanding of biological responses of marine fauna to seawater acidification due to potential CO2 leakage from sub-seabed storage sites has improved recently, providing support to CCS environmental risk assessment. Physiological responses of benthic organisms to ambient hypercapnia have been previously investigated but rarely at the cellular level, particularly in areas of less common geochemical and ecological conditions such as brackish water and/or reduced oxygen levels. In this study, CO2-related responses of oxygen-dependent, antioxidant and detoxification systems as well as markers of neurotoxicity and acid-base balance in the Baltic clam Limecola balthica from the Baltic Sea were quantified in 50-day experiments. Experimental conditions included CO2 addition producing pH levels of 7.7, 7.0 and 6.3, respectively and hydrostatic pressure 900 kPa, simulating realistic seawater acidities following a CO2 seepage accident at the potential CO2-storage site in the Baltic. Reduced pH interfered with most biomarkers studied, and modifications to lactate dehydrogenase and malate dehydrogenase indicate that aerobiosis was a dominant energy production pathway. Hypercapnic stress was most evident in bivalves exposed to moderately acidic seawater environment (pH 7.0), showing a decrease of glutathione peroxidase activity, activation of catalase and suppression of glutathione S-transferase activity likely in response to enhanced free radical production. The clams subjected to pH 7.0 also demonstrated acetylcholinesterase activation that might be linked to prolonged impact of contaminants released from sediment. The most acidified conditions (pH 6.3) stimulated glutathione and malondialdehyde concentration in the bivalve tissue suggesting potential cell damage. Temporal variations of most biomarkers imply that after a 10-to-15-day initial phase of an acute disturbance, the metabolic and antioxidant defence systems recovered their capacities.en_US
dc.publisherElsevier Ltden_US
dc.rightsAttribution-NonCommercial-NoDerivatives 4.0 Internasjonal*
dc.subjectCO2 leakageen_US
dc.subjectDefence system responseen_US
dc.subjectLimecola balthicaen_US
dc.subjectRepresentative hydrostatic pressureen_US
dc.titleCellular level response of the bivalve Limecola balthica to seawater acidification due to potential CO2 leakage from a sub-seabed storage site in the southern Baltic Sea: TiTank experiment at representative hydrostatic pressureen_US
dc.typeJournal articleen_US
dc.typePeer revieweden_US
dc.rights.holder© 2021 The Authors. Published by Elsevier B.V.en_US
dc.source.journalScience of the Total Environmenten_US

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Attribution-NonCommercial-NoDerivatives 4.0 Internasjonal
Med mindre annet er angitt, så er denne innførselen lisensiert som Attribution-NonCommercial-NoDerivatives 4.0 Internasjonal