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

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 f...

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Bibliographic Details
Main Authors: Carreiro-Silva, Marina, Marques, Sandra, Godinho, Antonio, Raimundo, Joana, Caetano, Miguel, Brito, Pedro, Colaço, Ana, Martins, Ines
Format: Dataset
Language:English
Published: PANGAEA 2024
Subjects:
Aquaria ID
Azores
Calculated
CCFZ
Cnidaria
Condor Seamounts
Deep sea
Dentomuricea_aff_meteor_Aquaria_Experiment_2
Dentomuricea_aff_meteor_Sampling_Site
ecophysiology
ecotoxicology
Experiment duration
hydrothermal vents
iAtlantic
Integrated Assessment of Atlantic Marine Ecosystems in Space and Time
Laboratory experiment
LLDEP
Longline deployment
Sample ID
Species
unique identification (Semantic URI)
unique identification (URI)
Tissue loss
area
Treatment
Pacific
Northeast Atlantic
Online Access:https://doi.pangaea.de/10.1594/PANGAEA.966836
https://doi.org/10.1594/PANGAEA.966836
Description
Summary: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 coral tissue lost during the experiment was quantified using photographs of the coral fragments and ImageJ software. Measurements were made every week for a period of 4 weeks.

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