TITLE: Palmer LTER: Dissolved silicic acid-nitrate relationships during austral autumn 1993 AUTHOR: Terrence Houlihan and David M Karl Palmer LTER Contribution #26 ANJ 1993 V28(5) pg 219-221 The study of biogeochemical processes in representative antarctic marine ecosystems is a high-priority scientific objective of the U.S. Joint Global Ocean Flux Study (JGOFS) program (Anderson 1993). Carbon and bioelement (especially silica) fluxes in the Southern Ocean are significant on global scales but are, at present, poorly constrained due to undersampling. Consequently, we are unable to construct accurate coupled physical-biogeochemical models and to predict the response of the Southern Ocean to global environmental change.