1. Department of Marine Sciences; University of Georgia; Athens GA 30602 USA
2. Department of Natural Resources & the Environment; University of New Hampshire; Durham NH 03824 USA
3. Department of Earth & Sciences; University of Pennsylvania; Philadelphia PA 19104 USA
4. School of Earth and Atmospheric Sciences; Georgia Institute of Technology; Atlanta GA 30332 USA
5. Department of Biology; University of Southern California; Los Angeles CA 90089 USA
6. Australian Institute of Marine Science; PMB 3 Townsville MC QLD 4810 Australia
7. Climate and Global Dynamics Division; National Center for Atmospheric Research; PO Box 3000 Boulder CO 80307-3000 USA
8. Center for Ecosystem Science and Society; Department of Biological Sciences; Northern Arizona University; Flagstaff AZ 86011 USA
9. Department of Forest Resources and Environmental Conservation; Virginia Tech; Blacksburg VA 24061 USA
10. Geosciences Research Division; Scripps Institution of Oceanography; University of California; San Diego La Jolla CA 92093 USA
11. Department of Agronomy; Leonardo da Vinci Building; Campus Rabanales; Cordoba 14071 Spain
12. Department of Atmospheric and Oceanic Science; University of Maryland; College Park MD 20742 USA