Combined impacts of ocean acidification and deep-sea mining on larval survival of the deep-sea coral Desmophyllum pertusum ...

• Main Authors: Rakka, Maria, Larsson, Ann I, Carreiro-Silva, Marina
• Format: Dataset
• Language: unknown
• Published: PANGAEA 2024
• Subjects: Climate change; Deep Atlantic; Deep sea; Deep-sea mining; early life history; early life stages; iAtlantic; Laboratory experiment; DATE/TIME; Species, unique identification URI; Species, unique identification Semantic URI; Species; Sample ID; Treatment time after; Treatment; Replicate; pH; Temperature, water; Salinity; Alkalinity, total; Larvae; Remote operated vehicle; pH meter, Mettler Toledo, Seven2Go pH /Ion meter S8; Visual counts; Association of European Marine Biological Laboratories Expanded ASSEMBLE_Plus; Integrated Assessment of Atlantic Marine Ecosystems in Space and Time iAtlantic; Toledo; Lophelia pertusa; Ocean acidification
• Online Access: https://dx.doi.org/10.1594/pangaea.966548; https://doi.pangaea.de/10.1594/PANGAEA.966548

Here, we report the results of a multiple stressor experiment combining impacts of ocean acidification and Polymetallic sulfide (PMS) deposits produced by deep-sea mining on larval survival of the deep-sea coral Desmophyllum pertusum (syn. Lophelia pertusa). Adult colonies of D. pertusum were collected in December and January 2022 at Tisler reef, at depths between 100-120 m. Adults were maintained in aquaria and after spawning, embryos were collected and left to develop to 7-day larvae. On day 7, larvae were exposed to four experimental treatments and their combinations: two pCO2 treatments recreating present conditions (400 ppm), and conditions projected to the end of the century (RCP8.5, 1000 ppm), as well as two mining treatments corresponding to PMS particles (concentration 5 mg/L), and their leachates. Survival was monitored every 24h. ... : Experimental treatment: CTR: present pCO2, no mining; AC: end of century pCO2, no mining; CTR-SED: present pCO2 and PMS sediment; CTR-MET: present pCO2 and PMS leachates; AC-SED: end-of-century pCO2 and PMS sediment; AC-MET: end-of-century pCO2 and PMS leachatesCTR/present: pcO2 400 ppm; Low/end-of-century: pCO2 1000 ppmNo: No mining sediment; Sediment: sediment, metals only: metal leachates without sediment ...