Hannah Muir¹, James Asa Strong¹, Jan Geert Hiddink², David George Reading³, Phillip E. Warwick³, Rowan Henthorn⁴, Jacqui Keenan⁴, Richard KF Unsworth⁵ and Claire Evans¹, (1)National Oceanography Centre, Ocean Biogeosciences, Southampton, United Kingdom, (2)Bangor University, School of Ocean Sciences, Bangor, United Kingdom, (3)University of Southampton, GAU-Radioanalytical Laboratories, Ocean and Earth Science, Southampton, United Kingdom, (4)Isle of Man Government, Department of Environment, Food and Agriculture (DEFA), Isle of Man, United Kingdom, (5)Swansea University, School of Biosciences, Swansea, United Kingdom