TY - JOUR N2 - Results of hydroacoustic investigations of krill biomass carried out in the South Shetland Island region between October 1986 and January 1987 are presented. A considerable difference in the krill biomass between Antarctic spring and summer was recorded. Initially observations were conducted close to Elephant Island, in the period just after the retreated of compact ice cover. Krill then aggregated only in swarms, the density of which frequently exceeded 100 t nM-2 . In the region of Polygon I (30—31 October 1986) the total estimated biomass was 26899 t, in the region of Polygon II (6—10 November 1986) it was 25827 t. Investigations were repeated in January 1987 obtaining 112372 t in the Bransfield Strait and 390309 t in the region of Elephant Island. The results are presented in tables and maps. L1 - http://journals.pan.pl/Content/111279/PDF/1988_2-3_327-338.pdf L2 - http://journals.pan.pl/Content/111279 PY - 1988 IS - No 2-3 EP - 338 KW - Antarctica KW - krill stocks KW - BIOMASS III A1 - Kalinowski, Janusz PB - Polish Academy of Sciences PB - Committee on Polar Research VL - vol. 9 DA - 1988 T1 - Biomass variability of krill in the South Shetland Islands region (BIOMASS III, October 1986—January 1987) SP - 327 UR - http://journals.pan.pl/dlibra/publication/edition/111279 T2 - Polish Polar Research ER -