TITLE:      Observations of krill from ice camps during two winter cruises,
	    August 2001 and August/September 2002, west of the Antarctic
	    Peninsula (talk) given at the 
            Fourth U.S. Southern Ocean Globec Science Investigator Meeting
AUTHORS:    L.B. Quetin, R.M. Ross, C. Boch, S. Dovell, E. Hessell, K. Johnston,            S. Oakes, and A. Willis
DATE:       9-11 December 2002
PLACE:      Arlington, VA
Posted WEB: http://www.ccpo.odu.edu/Research/globec/4sciinvest/quetin.htm


ABSTRACT

During two winter cruises to the Southern Ocean GLOBEC study region west of
the Antarctic Peninsula between 66.3degrees and 68.5 degrees S, five ice 
camps were occupied for periods of 3 to 8 d.  Observations by SCUBA divers 
in the under-ice habitat showed both interannual and site-specific variation 
in the location and behavior of Antarctic krill.  The strength of the 
attachment to the under-ice surface varied between the two years.  During 
August 2001, larval krill were always seen coupled to the under-ice surface 
and feeding on floors in over-rafted areas, but during the August/September 
2002 cruise the degree of attachment varied with the location of the ice camp.  
During the August/September 2002 cruise, the numbers and degree of coupling of 
larval krill to the under-ice surface increased from Ice Camp Sparky, the 
southernmost camp, to Ice Camp Pisco, the northmost camp.  At Ice Camp Rodin, 
where few larvae were coupled to the under-ice surface, tows from drifting 
ice floes with paired nets at 1 m and 10 m below the ice surface were used to 
compare the day/night behavior of larval krill.  The catches differed both day 
to night and at the two depths.  Ice Camp Rodin was also the only location 
where adult krill were seen by divers.  They were in the water column, 
swimming in schools 15  20 ft below the ice with the ice drifting over them.