Carreiro-Silva, Marina; Godinho, Antonio; Sire de Vilar, Anaïs; Arzeni, Beatriz; Edery, Gal-la; Caetano, Miguel; Raimundo, Joana; Martins, Ines (2024): Growth rates of the cold-water coral Desmophyllum dianthus during an ex-situ experiment in the Azores [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.966829
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Abstract:
We conducted a medium-term (4 months) multiple stressor experiment with the cold-water coral Desmophyllum dianthus under future environmental conditions (IPCC RCP 8.5 scenarios for 2100), and sediment plumes generated during the potential extraction of seafloor massive sulphides. The experiment followed a two-step approach, where during the first 3 months, corals were exposed to four different treatments combining predicted scenarios of ocean acidification (pCO2/pH) and food availability. Two levels of pCO2 conditions were considered: natural habitat present day conditions (~500 µatm, 720 m depth) and IPCC RCP8.5 scenario (1000 µatm; IPCC, 2019), corresponding to pHT values of 7.93 and 7.66, respectively. In addition, two food availability regimes were recreated: high frequency of feeding (food delivered twice a day / 7 days a week) and low frequency of feeding (food delivered every other day). There were six replicate 13 L aquaria per treatment (4 D. dianthus per aquaria) at a temperature of 10.5 ± 0.1 ºC. During the fourth month of the experiment, suspended polymetallic sulphide particles generated during potential mining activities were added to half of the aquaria under the climate change scenarios at a concentration of 10 mg/l, making 8 treatments in a fully crossed experimental design for the 3 factors tested (OA, food, mining particles). Growth rates were measured using the buoyant weighing technique (Jokiel et al. 1978), using a balance (Mettler-Toledo ME204T) with a precision of 0.1 mg. Corals were weighed twice during the experiment: 1-2 weeks after the start of the experiment and just before the second phase of the experiment with PMS addition, which corresponded to a time interval of 63-71 days.
Project(s):
Funding:
Fundação para a Ciência e Tecnologia (FCT), grant/award no. CCCIND/03346/2020: Stimulus of Scientific Employment
Horizon 2020 (H2020), grant/award no. 818123: Integrated Assessment of Atlantic Marine Ecosystems in Space and Time
Coverage:
Median Latitude: 38.490720 * Median Longitude: -28.613565 * South-bound Latitude: 38.448110 * West-bound Longitude: -28.633330 * North-bound Latitude: 38.533330 * East-bound Longitude: -28.593800
Date/Time Start: 2021-05-15T00:00:00 * Date/Time End: 2022-06-21T00:00:00
Event(s):
Desmophyllum_dianthus_Aquaria_Experiment * Latitude: 38.533330 * Longitude: -28.633330 * Date/Time: 2022-06-21T00:00:00 * Location: Azores * Method/Device: Laboratory experiment * Comment: Experiment conducted at the DeepSeaLab aquaria facilities of the Okeanos Institute, University of the Azore. Species: Desmophyllum dianthus
Desmophyllum_dianthus_Sampling_Site * Latitude: 38.448110 * Longitude: -28.593800 * Date/Time: 2021-05-15T00:00:00 * Location: Azores * Method/Device: Longline deployment (LLDEP) * Comment: Desmophyllum dianthus were obtained as by-catch during experimental long-line fisheries campaigns on board R/V "Arquipélago" (ARQDAÇO monitoring program, University of the Azores) from 720 m depth. Area: Baixa de São Mateus/South of Faial-Pico Channel. Species: Desmophyllum dianthus
Parameter(s):
| # | Name | Short Name | Unit | Principal Investigator | Method/Device | Comment |
|---|---|---|---|---|---|---|
| 1 | Experiment | Exp | Carreiro-Silva, Marina | |||
| 2 | Species, unique identification | Species UID | Carreiro-Silva, Marina | |||
| 3 | Treatment: carbon dioxide, partial pressure | T:pCO2 | Carreiro-Silva, Marina | |||
| 4 | Treatment: food | T:food | Carreiro-Silva, Marina | |||
| 5 | Aquaria ID | Aquaria ID | Carreiro-Silva, Marina | |||
| 6 | Sample ID | Sample ID | Carreiro-Silva, Marina | Coral.ID | ||
| 7 | Interval | Int | days | Carreiro-Silva, Marina | Number of days between buoyant weight measurements | |
| 8 | Desmophyllum dianthus, buoyant mass | D. dianthus buoyant m | g | Carreiro-Silva, Marina | Analytical balance, Mettler-Toledo, ME204T | Initial - Buoyant weighing technique according to Jokiel et al. (1978) |
| 9 | Desmophyllum dianthus, buoyant mass | D. dianthus buoyant m | g | Carreiro-Silva, Marina | Analytical balance, Mettler-Toledo, ME204T | Final - Buoyant weighing technique according to Jokiel et al. (1978) |
| 10 | Desmophyllum dianthus, growth rate | D. dianthus µ | %/day | Carreiro-Silva, Marina | Calculated | |
| 11 | Desmophyllum dianthus, growth rate of calcium carbonate | D. dianthus µ CaCO3 | mg/g/day | Carreiro-Silva, Marina | Calculated |
License:
Creative Commons Attribution 4.0 International (CC-BY-4.0) (License comes into effect after moratorium ends)
Status:
Curation Level: Enhanced curation (CurationLevelC) * Processing Level: PANGAEA data processing level 3 (ProcLevel3)
Size:
1056 data points