Macroalgal responses to ocean acidification depend on nutrient and light levels

1 Department of Ecology, Faculty of Science, University of Málaga, Málaga, Spain, 2 Laboratory of Botany, Faculty of Pharmacy, University of Barcelona, Barcelona, Spain, 3 Marine Biology and Ecology Research Centre, Plymouth University, Plymouth, UK, 4 Department of Botany, University Federal of Santa Catarina, Florianopolis, Brazil, 5 Dipartimento di Scienze della Terra e del Mare, University of Palermo, Palermo, Italy, 6 Institute for Marine and Antarctic Studies, University of Tasmania, Hobart, TAS, Australia, 7 School of Earth and Environment and ARC Centre of Excellence for Coral Reef Studies, University of Western Australia, Crawley, WA, Australia