TY - JOUR N2 - On the basis of measurements of the depth of occurrence of 11000 krill aggregations and the biological analyses of these animals and measurements of some environmental factors the diurnal vertical distribution of aggregations is presented against the background of various environmental conditions. Vertical distribution of aggregations is closely related to the feeding rhythm of krill. Active vertical migrations have been recorded at civil twilight. The increasing and decreasing rate of aggregations in those periods is described. L1 - http://journals.pan.pl/Content/111639/PDF/1980_4_127-146.pdf L2 - http://journals.pan.pl/Content/111639 PY - 1980 IS - No 4 EP - 146 KW - Antarctic KW - krill KW - vertical distribution A1 - Kalinowski, Janusz A1 - Witek, Zbigniew PB - Polish Academy of Sciences PB - Committee on Polar Research VL - vol. 1 DA - 1980 T1 - Diurnal vertical distribution of krill aggregations in the Western Antarctic SP - 127 UR - http://journals.pan.pl/dlibra/publication/edition/111639 T2 - Polish Polar Research ER -