1. NIWA Centre for Chemical and Physical Oceanography, Department of Chemistry; University of Otago; Dunedin New Zealand
2. Now at Institute for Marine and Antarctic Studies; University of Tasmania; Hobart Tasmania Australia
3. Department of Chemistry; University of Otago; Dunedin New Zealand
4. Now at Research School of Earth Sciences; Australian National University; Canberra Australia
5. Research School of Earth Sciences; Australian National University; Canberra Australia
6. Marine and Environmental Biology, Department of Biological Sciences; University of Southern California; Los Angeles California USA
7. National Institute of Water and Atmospheric Research (NIWA); Wellington New Zealand
8. Bigelow Laboratory for Ocean Sciences; East Boothbay Maine USA
9. Department of Microbiology; University of Tennessee; Knoxville Tennessee USA