Keywords: Balanion sp., biomass as carbon; BIOACID; Biological Impacts of Ocean Acidification; Ceratium furca, biomass as carbon; Ceratium fusus, biomass as carbon; Ceratium horridum, biomass as carbon; Ceratium lineatum, biomass as carbon; Ceratium longipes, biomass as carbon; Ceratium macroceros, biomass as carbon; Ceratium tripos, biomass as carbon; Chaetoceros curvisetus cyst, biomass as carbon; Chaetoceros sp., biomass as carbon; ciliates; Ciliates, biomass as carbon; Dactyliosolen fragilissimus, biomass as carbon; DATE/TIME; Day of experiment; Diatoms, biomass as carbon; Dinoflagellates, biomass as carbon; Dinophysis acuminata, biomass as carbon; Dinophysis acuta, biomass as carbon; Dinophysis norvegica, biomass as carbon; Dinophysis rotundata, biomass as carbon; Dinophyta spp., biomass as carbon; Event label; fatty acids; Fjord; Guinardia delicatula, biomass as carbon; Guinardia flaccida, biomass as carbon; Gymnodinium, biomass as carbon; Gymnodinium sp., biomass as carbon; Gyrodinium fusiforme, biomass as carbon; Katodinium sp., biomass as carbon; KOSMOS_2015; KOSMOS_2015_Mesocosm-M1; KOSMOS_2015_Mesocosm-M2; KOSMOS_2015_Mesocosm-M3; KOSMOS_2015_Mesocosm-M4; KOSMOS_2015_Mesocosm-M5; KOSMOS_2015_Mesocosm-M6; KOSMOS_2015_Mesocosm-M7; KOSMOS_2015_Mesocosm-M8; KOSMOS_2015_Mesocosm-M9; KOSMOS Bergen; Laboea, biomass as carbon; Lohmanniella oviformis, biomass as carbon; MESO; Mesocosm experiment; Mesocosm label; Myrionecta rubra, biomass as carbon; Ocean acidification; Phase; Phytoplankton; Phytoplankton, biomass as carbon; Proboscia alata, biomass as carbon; Protoperidinium depressum, biomass as carbon; Pseudo-nitzschia delicatissima, biomass as carbon; Pseudo-nitzschia seriata, biomass as carbon; Scuticociliates, biomass as carbon, fractionated; Skeletonema sp., biomass as carbon; Strombidium, biomass as carbon; Strombidium capitatum, biomass as carbon; Strombidium cf. emergens, biomass as carbon; Treatment