Arturo Lucas studied Environmental and Marine Science. His research interest converges from a broad background in ecology, marine biogeochemistry, and (pale)oceanography. He joined the Marine and Environmental Biogeosciences research group at ICTA-UAB as a PhD student in the frame of the BIOCAL project. Where he will focus on the biodiversity of marine planktonic calcifiers, at the base of the food web, that have played a key role in marine CaCO3 production since the Mesozoic. He will consider different temporal scales to better understand the mechanisms of diversity change, but also focus on modern dynamics in strategical biogeochemical gradients. As planktonic calcifiers dominate the pelagic carbonate budget and production and can alter the buffering capacity of the ocean, his research will fill gaps on how much calcium carbonate is produced and what are the interactions between the groups regarding their implications in the carbon cycle.