Seawater carbonate chemistry and Oikopleura dioica, phytoplankton, and carbon export during the KOSMOS Bergen mesocosm experiment on ocean acidification (Raunefjord, Norway, 2015)

We conducted an experiment with large volume in situ mesocosms (~55–60 m3 and 21 m depth) in Raunefjord (Bergen), Norway in 2015 to investigate how ocean acidification (OA) extreme events affect food web structure and carbon export in a natural plankton community, particularly focusing on the keystone species Oikopleura dioica, a globally abundant appendicularian.