1. Department of Oceanography and Coastal SciencesLouisiana State University Baton Rouge Louisiana
2. Antarctic Ecosystem Research Division, Southwest Fisheries Science Center, National Marine Fisheries ServiceNational Oceanic and Atmospheric Administration La Jolla California
3. Department of Geological Sciences, Saskatchewan Isotope LaboratoryUniversity of Saskatchewan Saskatoon Saskatchewan Canada
4. Department of Biology and Marine BiologyUniversity of North Carolina Wilmington Wilmington North Carolina