Erik Bjorn¹, Thibaut Cossart¹, Isabel Sanz-Sáez¹, Júlia Dordal-Soriano², Meifang Zhong³, Tove Bratthäll¹, Johannes West⁴, Amina Traore Schartup⁴, Sofi Jonsson⁵, Andrea Garcia Bravo⁶ and Eric Capo³, (1)Umeå University, Department of Chemistry, Umeå, Sweden, (2)Institute of Marine Sciences, CSIC, Department of Marine Biology and Oceanography, Barcelona, Spain, (3)Umeå universitet, Ecology, Environment and Geoscience, Umeå, Sweden, (4)Scripps Institution of Oceanography, Marine Chemistry and Geochemistry, Geosciences Research Division, La Jolla, United States, (5)Stockholm University, Stockholm, Sweden, (6)ICM-CSIC, Department of Marine Biology and Oceanography, Barcelona, Spain