Erin E Black, University of Rochester, Department of Earth and Environmental Sciences, Rochester, United States, Viena Puigicorbe, Institut de Ciències del Mar (ICM-CSIC), Department of Marine Biology and Oceanography, Barcelona, Spain, Ken Buesseler, Woods Hole Oceanographic Institution, Department of Marine Chemistry & Geochemistry, Woods Hole, MA, United States, Phoebe J Lam, University of California Santa Cruz, Department of Ocean Sciences, Santa Cruz, United States, Pere Masque, School of Science, Edith Cowan University, Joondalup, Western Australia, Australia, Michiel Rutgers van der Loeff, Alfred Wegener Institute Helmholtz-Center for Polar and Marine Research Bremerhaven, Bremerhaven, Germany and Yang Xiang, Louisiana State University, Baton Rouge, United States