Data from: Age specific survival rates of Steller sea lions at rookeries with divergent population trends in the Russian Far East ...

• Main Authors: Altukhov, Alexey V., Andrews, Russel D., Calkins, Donald G., Gelatt, Thomas S., Gurarie, Eliezer D., Loughlin, Thomas R., Mamaev, Evgeny G., Nikulin, Victor S., Permyakov, Peter A., Ryazanov, Sergey D., Vertyankin, Vladimir V., Burkanov, Vladimir N.
• Format: Dataset
• Language: English
• Published: Dryad 2016
• Subjects: vital rates; western stock; Steller sea lion; Eumetopias jubatus; Kamchatka
• Online Access: https://dx.doi.org/10.5061/dryad.885hk; https://datadryad.org/stash/dataset/doi:10.5061/dryad.885hk

After a dramatic population decline, Steller sea lions have begun to recover throughout most of their range. However, Steller sea lions in the Western Aleutians and Commander Islands are continuing to decline. Comparing survival rates between regions with different population trends may provide insights into the factors driving the dynamics, but published data on vital rates have been extremely scarce, especially in regions where the populations are still declining. Fortunately, an unprecedented dataset of marked Steller sea lions at rookeries in the Russian Far East is available, allowing us to determine age and sex specific survival in sea lions up to 22 years old. We focused on survival rates in three areas in the Russian range with differing population trends: the Commander Islands (Medny Island rookery), Eastern Kamchatka (Kozlov Cape rookery) and the Kuril Islands (four rookeries). Survival rates differed between these three regions, though not necessarily as predicted by population trends. Pup ... : Resight history of Steller sea lions in the Russian Far EastData file contains annual resight history of Steller sea lions branded as pups between 1989 and 2008 and resighted between 1996 and 2011 at 6 major rookeries in the Russian Far East. Detailed information on data structure provided in read me file.data.csv ...