1. Marine Ecology Research Group and Centre for Integrative Ecology, School of Biological Sciences, University of Canterbury, Christchurch, New Zealand
2. NIWA, Wellington, New Zealand
3. Department of Marine Science, University of Otago, Dunedin, New Zealand
4. NIWA, Christchurch, New Zealand
5. Department of Ecoscience, Aarhus University, Aarhus, Denmark