Stable isotope and elemental analyses of an ex-situ experiment testing the effects of mining-generated sediment plumes and de-oxygenation on the juveniles of the hydrothermal vent mussel Bathymodiolus azoricus


We report the results of an aquaria-based experiment testing the effects of low oxygen and suspended particles generated during a potential mining activities accident on the juveniles of the vent mussel Bathymodiolus azoricus. Mussels were collected from the Lucky Strike hydrothermal vent field (Azores, NE Atlantic) at 1700 m water depth in 2021. Mussels were maintained in 1 l aquaria and exposed to four experimental treatments for a period of two weeks at the DeepSeaLab aquaria facilities (Okeanos-University of the Azores): (1) control conditions (no added sediments and normal seawater oxygen ); (2) low oxygen (difference of 30 µmol from the normal oxygen concentration); (3) suspended polymetallic sulphide (PMS) particles; (4) Low oxygen + suspended polymetallic sulphide (PMS) particles. PMS particles were obtained by grinding PMS inactive chimney rocks collected at the hydrothermal vent field Lucky Strike. Particles types were in concentration of 420 mg/l on day 8 and day 11. The putative effects of low oxygen, PMS particles, and the cumulative effect(s) were evaluated through measurements of bulk mussel tissue samples (stable isotopes and elemental analyses).

Control: no sediment addition and non N2 ventilated water; PMS: suspended polymetallic sulphide particles; Low oxygen: N2 ventilated waterTime 0 (wild), other times are given in days after the beginning of the experiment

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Metadata Access
Creator Colaço, Ana ORCID logo
Publisher PANGAEA
Publication Year 2023
Funding Reference Horizon 2020 Crossref Funder ID 818123 Integrated Assessment of Atlantic Marine Ecosystems in Space and Time
Rights Data access is restricted (moratorium, sensitive data, license constraints)
OpenAccess false
Language English
Resource Type Dataset
Format text/tab-separated-values
Size 952 data points
Discipline Earth System Research
Spatial Coverage (-31.955 LON, 37.503 LAT); NE Atlantic
Temporal Coverage Begin 2021-06-14T00:00:00Z
Temporal Coverage End 2021-06-30T00:00:00Z