【Title】SEASONAL VARIATION OF NUTRIENTS IN THE FIRST YEAR SEA ICE NEAR ZHONGSHAN STATION, EAST ANTARCTICA
【Abstract】The nutrient status in the first year sea ice and its relation to ice algal biomass were studied near Zhongshan Station,East Antarctica from April to December in 1992. In order to compare with those in the underlying water column,the nutrients were normalized to the sea water salinity of the surface layer. The results showed that NO 3 N concentrations were relatively lower in most of ice sections,which was contrary to PO 4 P and SiO 3 Si. The concentrations of NO 2 N in the sea ice were always higher than those of surface water. The nutrients are shown to be not the limit factors for the growth of ice algae,and no obvious rules were observed in the vertical distribution and seasonal variation of nutrients. Except NO 3 N in the bottom layer of ice,the nutrient concentrations were weakly related to chlorophyll a concentrations.