Confirmation, Revision, and Sensitivity Analysis of the 1994 Scientific Committee Assessment of the Bering-Chukchi-Beaufort Seas Stock of Bowhead Whales
Results from the approximate reweighting method used by the Scientific Committee for its 1994 assessment of the Bering-Chukchi-Beaufort Seas stock of bowhead whales are confirmed using the full Bayesian synthesis approach. Sensitivity trials are examined to investigate several areas of interest iden...
| Main Authors: | , |
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| Other Authors: | |
| Format: | Text |
| Language: | English |
| Published: |
1995
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| Online Access: | http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.51.1355 http://www.stat.colostate.edu/~geof/documents/sc47as15+21+24.revis.ps |
| Summary: | Results from the approximate reweighting method used by the Scientific Committee for its 1994 assessment of the Bering-Chukchi-Beaufort Seas stock of bowhead whales are confirmed using the full Bayesian synthesis approach. Sensitivity trials are examined to investigate several areas of interest identified during this assessment. The results show that the full analysis gives results which are very close to those obtained by the Scientific Committee in 1994, and which are not very sensitive to changing the distributions of model parameters in ways which are reasonable for bowheads. The Scientific Committee obtained an estimated 5 th percentile for replacement yield of 104 whales; four independent runs of the full analysis give values of 104, 108, 104, and 115. The results show no reason to question the conclusions of the 1994 Scientific Committee assessment. In its 1994 bowhead assessment, the Scientific Committee agreed to use a stock abundance estimate based on data from 1988 because. |
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