Sea ice organisms Bacteria Diatoms Flagellate Cilliates Amoeba Turbellaria Nematode Copepod Others Field work July 1995 March 1999 June 2001 Dec. 2002 Jan. 2003 March. 2003 April 2003 - - Experimental work 1998 2002 - - - - - - - Graphical material Foodweb Buttons Ice work Ice tech. - - - - -