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Table 9.31: New Zealand seabird captures by Japanese tuna boats, 1988-95.
| Observed captures 1 | Estimated captures 2 | Best estimate | Total number of longline sets | Percentage of sets observed | |
|---|---|---|---|---|---|
| 1988 3 | 15 | 234-1,406 | 820 | 2,231 | 2% |
| 1989 | 123 | 1,697-6,261 | 3,979 | 3,310 | 3% |
| 1990 | 129 | 1,197-3,595 | 2,396 | 2,918 | 5% |
| 1991 | 37 | 266-1,092 | 629 | 4,452 | 3% |
| 1992 | 16 | 16-371 | 185 | 3,148 | 8% |
| 1993 | 215 | 310-1,146 | 728 | 1,499 | 28% |
| 1994 | 108 | 108-176 | 132 | 320 | 76% |
| 1995 | 90 | 90-252 | 167 | 463 | 54% |
| Yearly average 1989 -95 | 103 | 526 | 1,174 | 2,301 | 10% |
1 Seabird captures include live and dead birds recorded by MAF Fisheries observers.
2 Estimates are based on observer data extrapolated over the whole fleet and have a 95% confidence interval.
3 1988 data are for the northern tuna fishery only. All other years combine northern and southern tuna fisheries.
Adapted from Baird (1996)
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