Combined effect of ocean acidification and bottom trawling long-term exposure on larval survival of the scleractinian cold-water-coral Desmophyllum pertusum ...

• Main Authors: Sire de Vilar, Anaïs, Carreiro-Silva, Marina, Rakka, Maria, Strömberg, Susanna M, Larsson, Ann I
• Format: Dataset
• Language: unknown
• Published: PANGAEA 2024
• Subjects: Bottom trawling; Cnidaria; Cold water corals; early life stages; Laboratory experiment; Lophelia pertusa; North Atlantic; Ocean acidification; scleractinians; Species; Species, unique identification URI; Species, unique identification Semantic URI; Treatment; Replicate; Experiment duration; Survival; Remote operated vehicle; Visual identification; Integrated Assessment of Atlantic Marine Ecosystems in Space and Time iAtlantic
• Online Access: https://dx.doi.org/10.1594/pangaea.964224; https://doi.pangaea.de/10.1594/PANGAEA.964224

We report the results of a series of experiments investigating the combined effects of ocean acidification and suspended natural benthic sediments (NS) generated during bottom trawling on the early life stages of the cold-water coral Desmophyllum pertusum (syn. Lophelia pertusa). The experiment was conducted at the Tjärnö Marine Laboratory Facilities (University of Gothenburg, Sweden). For each experiment, the larvae/embryos were exposed to four different treatments: (1) current pCO2 (control): mimicking present-day pCO2/pH condition (pCO2 400 µatm; ambient pHT: 8.01), (2) high pCO2: a scenario reflecting the IPCC RCP8.5 prediction (pCO2 1000 µatm; low pHT: 7.63), (3) current pCO2 + NS (5 mg/L), and (4) high pCO2 + NS (5 mg/L): with the introduction of natural benthic sediments (NS) at a concentration of 5 mg/mL. The NS were collected at ~130 m water depth from a regularly trawled soft bottom close to the reef site of Säcken in the Northern Koster-fjord in Sweden, and the grain sizes ≤ 63 μm were used for ... : Number of larvae or embryos used for the experiments: 30-35 larvae or embryos per replicate ...