Dear Listmembers, Thanks to those of you that responded to my request for information on phytoplankton isotope values. In addition to the light stable isotope values, we are interested in d44Ca values of Antarctic phytoplankton. Because it is unlikely that anyone has conducted such analyses yet, we would be most interested in any samples of phytoplankton from the Antarctic Peninsula if any such material is available. Either frozen or freeze dried would be fine. Cheers, Bill -- Dr. William P. Patterson Professor Saskatchewan Isotope Laboratory Department of Geological Sciences University of Saskatchewan 114 Science Place Saskatoon SK S7N 5E2 Canada http://geochemistry.usask.ca/bill.html http://sil.usask.ca