Appendix E. Summary of Steller sea lion sightability studies.
TABLE E1. Summary of studies which report the proportion of time onshore for Steller sea lions. Some studies do not adjust for the tendency of Steller sea lions to forage at night and haul-out on land during the day. In this case, the proportion of time onshore is an underestimate of daytime sightability. All studies are from the Gulf of Alaska except Higgins et al. (1988).
1. No correction for daylight vs. night attendance patterns.
2. Corrected for daylight vs. night attendance pattern
REFERENCES
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Higgins, L. V., D. P. Costa, A. C. Huntley, and B. J. L. Boleuf. 1988. Behavioral and physiological measurements of maternal investment in the Steller sea lion, Eumetopias jubatus. Marine Mammal Science 4:44–58.
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