TY - JOUR N2 - On the basis of observations and markings of Weddell seals in the region of the Admiralty Bay it was estimated that numbers of this species decreased systematically from about 500 to about 100 individuals from December to February. The sex structure of the local population also changed, showing a growing domination of females. Males were observed more often on coastal snow patches, females prevailed on rocky beaches close to the sea. A thesis of an increased nocturnal activity of Weddell seal was confirmed, indicating also a possibility of a two days activity cycle of this species. Synchronized among the individuals of local populations by atmoshperic conditionds. L1 - http://www.journals.pan.pl/Content/111625/PDF-MASTER/1980_2-3_207-216.pdf L2 - http://www.journals.pan.pl/Content/111625 PY - 1980 IS - No 2-3 EP - 216 KW - Antarctic KW - Leptonychotes weddelli KW - Pinnipedia KW - daily activity KW - density A1 - Woyciechowski, MichaƂ PB - Polish Academy of Sciences PB - Committee on Polar Research VL - vol. 1 DA - 1980 T1 - Numbers and activity of Weddell seal (Leptonychotes weddelli Lesson) in the Admiralty Bay (King George Island, South Shetland Islands) in summer1978/1979 SP - 207 UR - http://www.journals.pan.pl/dlibra/publication/edition/111625 T2 - Polish Polar Research ER -