Further results from an AWMPlite-like assessment of the West Greenland minke whale population
The method advanced in Brandão and Butterworth (2006) to estimate a lower confidence limit on the size of the West Greenland minke whale population by taking account of the continuing sex bias in the catch is modified slightly and applied to updated data. The lower 5 percentile estimated for the pre...
| Main Authors: | , |
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| Format: | Report |
| Language: | English |
| Published: |
University of Cape Town
2007
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| Subjects: | |
| Online Access: | http://hdl.handle.net/11427/18938 https://open.uct.ac.za/bitstream/11427/18938/1/Brand%c3%a3o_Further_results_from_an_2007.pdf |
| Summary: | The method advanced in Brandão and Butterworth (2006) to estimate a lower confidence limit on the size of the West Greenland minke whale population by taking account of the continuing sex bias in the catch is modified slightly and applied to updated data. The lower 5 percentile estimated for the pre-exploitation size of the population is in the 25–35 000 range, depending on assumptions made about intrinsic population growth rate and the extent to which Greenland operations have remained comparable over time. However, a simulation test of the method suggests that it provides positively biased estimates of this lower 5 percentile, with the true value for the specific case investigated being some 17 000 rather than 27 000. |
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