Ana Fernández-Carrera, University of Vigo, Ecoloxia e Bioloxia Animal, Ourense, Spain, Amalia Maria Sacilotto Detoni, Instituto Nacional de Pesquisas Espaciais, São José dos Campos, Brazil, Peter Brandt, GEOMAR, Kiel, Germany and Ajit Subramaniam, Columbia University, Lamont-Doherty Earth Observatory, Palisades, NY, United States