Tissue loss of the cold-water octocoral Dentomuricea aff. meteor during an ex-situ experiment simulating deep-sea mining sediment plumes in the Azores ...

• Main Authors: Carreiro-Silva, Marina, Marques, Sandra, Godinho, Antonio, Raimundo, Joana, Caetano, Miguel, Brito, Pedro, Colaço, Ana, Martins, Ines
• Format: Dataset
• Language: unknown
• Published: PANGAEA 2024
• Subjects: CCFZ; Cnidaria; Deep sea; ecophysiology; ecotoxicology; hydrothermal vents; Species; Species, unique identification Semantic URI; Species, unique identification URI; Treatment; Experiment duration; Aquaria ID; Sample ID; Tissue loss, area; Laboratory experiment; Longline deployment; Calculated; Integrated Assessment of Atlantic Marine Ecosystems in Space and Time iAtlantic; Pacific; Northeast Atlantic
• Online Access: https://dx.doi.org/10.1594/pangaea.966836; https://doi.pangaea.de/10.1594/PANGAEA.966836

We report the results of an aquaria-based experiment testing the effects of simulated sediment plumes generated during mining activities for the extraction of ferromanganese nodules in the Clarion-Clipperton Fracture Zone (CCFZ), northeastern equatorial Pacific Ocean, and seafloor massive sulfides from a hydrothermal vent field in the Azores, northeast Atlantic, on the physiology of the cold-water octocoral Dentomuricea aff. meteor. Coral fragments were exposed to five experimental treatments for a period of four weeks at the DeepSeaLab aquaria facilities (Okeanos-University of the Azores): (1) suspended plumes of abyssal sediments from nodule fields at a concentration of 10 mg/l (2) suspended plumes of abyssal sediments from nodule fields at a concentration of 50 mg/l; (3) hydrothermal polymetallic sulphide particles at a concentration of 10 mg/l; (4) hydrothermal polymetallic sulphide particles at a concentration of 50 mg/l; and (5) a control treatment with no sediment addition. The surface area of the ... : Species: Dentomuricea aff. meteor1. Experimental treatmentsControl: no particle additionPMS10: Polymetallic sulphides at a concentration of 10 mg/lPMS50: Polymetallic sulphides at a concentration of 50 mg/lNFS10: Nodule field sediments at a concentration of 10 mg/lNFS50: Nodule field sediments at a concentration of 50 mg/lParticles delivered daily in 12 hours cycles ...