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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 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).
Cnidaria, enzyme activity, experiment, gene expression, metabolism, metal bioaccumulation, North Atlantic, octocorals, A Trans-Atlantic assessment and deep-water ecosystem-based spatial management plan for Europe (ATLAS), Integrated Assessment of Atlantic Marine Ecosystems in Space and Time (iAtlantic), JPI Oceans - Ecological Aspects of Deep-Sea Mining (JPIO-MiningImpact), Managing Impacts of Deep-seA reSource exploitation (MIDAS)
Cnidaria, enzyme activity, experiment, gene expression, metabolism, metal bioaccumulation, North Atlantic, octocorals, A Trans-Atlantic assessment and deep-water ecosystem-based spatial management plan for Europe (ATLAS), Integrated Assessment of Atlantic Marine Ecosystems in Space and Time (iAtlantic), JPI Oceans - Ecological Aspects of Deep-Sea Mining (JPIO-MiningImpact), Managing Impacts of Deep-seA reSource exploitation (MIDAS)
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).