The detailed analysis of a food of the Antarctic species of seals around Argentine islands archipelago, that was spent through out 11 Ukrainian Antarctic expedition (2006-2007), has shown that krill (Euphausia superba) is the main type of food for the major species of seals in region. Krill makes 97,2 % to a diet of fur seals (Arctocephalus gazella) and 90 % to a diet crabeater seal (Lobodon carcinophagus) during the summer period. It is established rather big dimensional and weight rates to young growth in comparison with literary data аccording to Weddell seal (L. weddelli) newborns monitoring. It testifies to enough qualitative and sufficient forage reserve for pregnant Weddell seal females in archipelago water area in which diet krill prevails also (about 70 %). Considering that from 5 seals species counted within archipelago, the most numerous is the crabeater seal and a southern fur seal - these species can be used as «species indicators» of krill distribution and quantity in the given region. It is established, that the leopard seal’s fodder diet is similar, to a diet of a specie around eastern Antarctic, despite an essential latitude difference of specie habitat arrangements.
The trophical researches of Weddell seal have allowed to define a new commercial species of squid Psychroteuthis glacialis for the first time in given region. These results have great value not only for a definition of an actual condition of Antarctic ecosystem and biovariety preservations in planetary scale. But also can be used for working out of the management project for future rational use of krill sea stocks and squids in the given region of Antarctic, at the state level.
Abstract:
In accordance with decision of CCAMLR Scientific Committee in 2010 and in 2011 years Russian Federation was conducted research program in SSRU 88.2 A. In seasons 2010/2011 and 2011/2012 Russian vessel “Chio Maru 3” (“Antei” Ltd.) has been conducted research fishing of toothfish. The primary objective of the works in the SSRU was estimation of toothfish’s distribution density and carrying out of tagging. Obtained results shows that investigated area is potentially advantageous for fishing and could be recommended for exploratory fishing under CCAMLR regulations.
Abstract:
Updated ICESCAPE routines are submitted and a short review of the software is presented. Several recent studies indicate the usefulness of ICESCAPE for standardising Adélie penguin population counts taken at potentially different points in a breeding season. Such standardisation admits the possibility of, for the first time, comparing Adélie penguin population counts across space and time for all historically published population estimates. Recently added functionality is described, along with several suggestions for further work.
