Results of an ex-situ experiment testing the effects of mining-generated sediment plumes on the cold-water octocoral Dentomuricea aff. meteor in the Azores

We report the results of an aquaria-based experiment testing the effects of suspended particles generated during potential mining activities, on a common habitat-building coral species in the Azores, Dentomuricea aff. meteor. Corals were collected from the summit of Condor Seamount (Azores, NE Atlan...

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Bibliographic Details
Main Authors: Carreiro-Silva, Marina, Martins, Ines, Raimundo, Joana, Caetano, Miguel, Bettencourt, Raul, Cerqueira, Teresa, Colaço, Ana
Format: Other/Unknown Material
Language:English
Published: PANGAEA 2022
Subjects:
ATLAS
A Trans-Atlantic assessment and deep-water ecosystem-based spatial management plan for Europe
Cnidaria
Condor Seamounts
enzyme activity
experiment
gene expression
iAtlantic
Integrated Assessment of Atlantic Marine Ecosystems in Space and Time
JPI Oceans - Ecological Aspects of Deep-Sea Mining
JPIO-MiningImpact
Managing Impacts of Deep-seA reSource exploitation
metabolism
metal bioaccumulation
MIDAS
North Atlantic
octocorals
Sampling_Azores_Cold_Water_Octocoral
Online Access:https://doi.pangaea.de/10.1594/PANGAEA.948414
https://doi.org/10.1594/PANGAEA.948414
Description
Summary:We report the results of an aquaria-based experiment testing the effects of suspended particles generated during potential mining activities, on a common habitat-building coral species in the Azores, Dentomuricea aff. meteor. Corals were collected from the summit of Condor Seamount (Azores, NE Atlantic) at depths between 185-210 m in August 2014. Coral fragments were maintained in 10-L aquaria and exposed to three experimental treatments for a period of four weeks at the DeepSeaLab aquaria facilities (Okeanos-University of the Azores): (1) control conditions (no added sediments); (2) suspended polymetallic sulphide (PMS) particles; (3) suspended quartz particles. PMS particles were obtained by grinding PMS inactive chimney rocks collected at the hydrothermal vent field Lucky Strike. Both particle types were delivered at a concentration of 25 mg L-1. The putative effects of PMS particles were evaluated through measurements of the coral physiological responses at the levels of the organism (oxygen consumption, ammonium excretion), tissue (bioaccumulation of metals) and cell (enzyme activity and gene expression).

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