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Results and evaluation of a survey to estimate Pacific walrus population size, 2006

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Results and evaluation of a survey to estimate Pacific walrus population size, 2006; 2011; Article; Journal; Marine Mammal Science; Speckman, S. G.; Chernook, V. I.; Burn, D. M.; Udevitz, M. S.; Kochnev, A. A.; Vasilev, A.; Jay, C. V.; Lisovsky, A.; Fischbach, A. S.; Benter, R. B.

Summary

In spring 2006, we conducted a collaborative U.S.-Russia survey to estimate abundance of the Pacific walrus (Odobenus rosmarus divergens). The Bering Sea was partitioned into survey blocks, and a systematic random sample of transects within a subset of the blocks was surveyed with airborne thermal scanners using standard strip-transect methodology. Counts of walruses in photographed groups were used to model the relation between thermal signatures and the number of walruses in groups, which was used to estimate the number of walruses in groups that were detected by the scanner but not photographed. We also modeled the probability of thermally detecting various-sized walrus groups to estimate the number of walruses in groups undetected [...]

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Harvested on Mon Jul 21 13:57:50 MDT 2014 from MODS XML Service

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local-index unknown 70036317
local-pk unknown 70036317
doi http://www.loc.gov/standards/mods/mods-outline-3-5.html#identifier doi:10.1111/j.1748-7692.2010.00419.x
series unknown Marine Mammal Science

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citationTypeArticle
journalMarine Mammal Science
languageEnglish
parts
typevolume
value27
typeissue
value3

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