К вопросу о спадах численности сивучей (emetopias jubatus) на Командорских островах

Analysis of return of the marked Steller sea lions to Yugo-Vostochny rookery in 2001-2011 and presence frequency of marked animals on the rookery in 2008-2011 was made. The return rate of marked animals started to decline in 2007 and amounted to a historical minimum in 2011. Presence frequency declined in 2009 and did not restore in following years. Derived results indicate a decline of Yugo-Vostochny rookery attractivity for Steller sea lions in the reproductive season.