title: Alterations in the macrobenthic fauna from Guadarranque River (Southern Spain) associated with sediment-seawater acidification deriving from CO2 leakage.
abstract: Nowadays, Carbon Storage in Sub-Seabed Geological Structures (CS-SSGS) is having much interest. Nonetheless, these technologies are still under development, especially the leakage of the stored CO2 and the consequent acidification of the environment. Therefore, the goal of this study is to test the impact of CO2-induced acidification on a macrobenthic community due to leakages from CS-SSGS using a mesocosm-based experiment. Results confirmed the significant correlation between the abundance of the species and the pH (positively), and the alkalinity (negatively). Additionally, the BIOENV analysis showed that the majority of the variability in the abundance of the total species was explained for the alkalinity. The correlation analysis showed differential vulnerabilities of different species, especially Cyathura carinata and a non-calcifier species as Hediste diversicolor. Nevertheless, these results showed the importance of taking into account the indirect effect associated with acidification processes, as metal release from sediment.
authors.affiliation: UNESCO UNITWIN/UNICOP, Faculty of Environmental and Sea Sciences, University of Cádiz, Polígono Río San Pedro s/n, Puerto Real 11510, Cádiz, Spain. Electronic address: victor.almagro@uca.es.
authors.forename: V
authors.initials: V
authors.lastname: Almagro-Pastor
authors.affiliation: Dpto Zoología, Universidad de Sevilla, Avda. Reina Mercedes s/n, Sevilla 41012, Spain.
authors.forename: M
authors.initials: M
authors.lastname: Conradi
authors.affiliation: UNESCO UNITWIN/UNICOP, Faculty of Environmental and Sea Sciences, University of Cádiz, Polígono Río San Pedro s/n, Puerto Real 11510, Cádiz, Spain.
authors.forename: T A
authors.initials: TA
authors.lastname: DelValls
authors.affiliation: UNESCO UNITWIN/UNICOP, Faculty of Environmental and Sea Sciences, University of Cádiz, Polígono Río San Pedro s/n, Puerto Real 11510, Cádiz, Spain.
authors.forename: I
authors.initials: I
authors.lastname: Riba
mesh_terms: D000818:Animals; D002245:Carbon Dioxide / Q000032:analysis*; D004784:Environmental Monitoring; D019015:Geologic Sediments / Q000737:chemistry*; D006863:Hydrogen-Ion Concentration; D011077:Polychaeta / Q000187:drug effects* / Q000254:growth & development; D045483:Rivers / Q000737:chemistry*; D012623:Seawater / Q000737:chemistry*; D013030:Spain; D014874:Water Pollutants, Chemical / Q000032:analysis*
chemical_list: D014874:Water Pollutants, Chemical; D002245:Carbon Dioxide
keywords: CO(2) leakage; Carbon capture and storage; Macrobenthic; Mesocosm experiments; Ocean acidification