Mortality rates from a long-term multiple stressor aquarium experiment with the cold-water coral Desmophyllum pertusum

• Main Authors: Beck, Kristina K, Hennige, Sebastian, Easton, Blair, Burns, Zoe, Kaye, Sarah, Peña Fernández, Marta, Barnhill, Kelsey Archer, Wolfram, Uwe, Roberts, J Murray
• Format: Dataset
• Language: English
• Published: PANGAEA 2024
• Subjects: Climate change; cold-water coral; Desmophyllum_pertusum_Sampling_Area_and_Period; Desmophyllum pertusum; dead polyps; live polyps; mortality; Duration; experiment; iAtlantic; Integrated Assessment of Atlantic Marine Ecosystems in Space and Time; Multiple stressors; Remote operated vehicle; ROV; Specimen identification; Tank number; Tisler Reef; Skagerrak; Treatment; Visual observation; Lophelia pertusa; Ocean acidification
• Online Access: https://doi.pangaea.de/10.1594/PANGAEA.965083; https://doi.org/10.1594/PANGAEA.965083

We conducted a long-term (6 months) multiple stressor aquarium experiment with the cold-water coral Desmophyllum pertusum (syn. Lophelia pertusa) under future environmental conditions. The experiment with live corals consisted of four different treatments to investigate the combined effect of ocean acidification, warming, deoxygenation and food limitation on their physiology: 1) control (9 °C, pH 8.1, 100 % oxygen, 100 % food availability), 2) multiple stressor with high feeding (12 °C, pH 7.7, 90 % oxygen, 100 % food availability), 3) multiple stressor with low feeding (12 °C, pH 7.7, 90 % oxygen, 50 % food availability) and 4) reduced oxygen (9 °C, pH 8.1, 90 % oxygen, 100 % food availability). Every treatment consisted of three replicate tanks with four live corals (treatments 1-4). Mortality rates and numbers of dead vs. live coral polyps were assessed over the full course of the experiment.