Publication Date:
2024-05-02
Description:
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. Seawater physical-chemical parameters were measured daily in each aquarium. Temperature and pH were measured manually in each aquaria every day using a Mettler-Toledo Seven2Go pH /Ion meter S8, salinity was measured with a S30 SevenEasyTM conductivity meter and oxygen concentration was measured with a Fibox4 (PreSens) with a Oxygen Dipping Probe DP-PSt3.
Keywords:
Analysis date/time, experiment; Aquaria ID; Azores; CCFZ; Cnidaria; Condor Seamounts; Conductivity meter, S30 SevenEasy; Deep sea; Dentomuricea_aff_meteor_Aquaria_Experiment_2; Dentomuricea_aff_meteor_Sampling_Site; ecophysiology; ecotoxicology; Experiment; Experiment duration; hydrothermal vents; iAtlantic; Integrated Assessment of Atlantic Marine Ecosystems in Space and Time; Laboratory experiment; LLDEP; Longline deployment; Oxygen; Oxygen Dipping Probe, DP-PSt3, Fibox 4, PreSens; pH; pH meter, Mettler Toledo, Seven2Go pH /Ion meter S8; Salinity; Species; Species, unique identification (Semantic URI); Species, unique identification (URI); Temperature, water; Treatment
Type:
Dataset
Format:
text/tab-separated-values, 3702 data points
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