New Zealand fur seal demographics

Wekakura Point, 2000

Mark-recapture estimate, 27–28 Jan 2000

Total marked
340
Mean estimate
459.1
Range
429.5 – 496.7

Mark-recapture counts

Count number Date Time Sector Unmarked count Marked count Dead marked Dead unmarked Total marked Cum. dead Estimate?
1 27 Jan 2000 19:42 – 19:53 Headland 1 7 52
27 Jan 2000 11:10 – 11:30 Headland 2 34 62
27 Jan 2000 08:34 – 08:49 Headland 3 16 38
All sectors 57 152 - - 340 - 467.0
2 28 Jan 2000 20:08 – 20:17 Headland 1 9 37
27 Jan 2000 11:45 – 12:03 Headland 2 42 76
27 Jan 2000 09:05 – 09:21 Headland 3 17 34
All sectors 68 147 - - 340 - 496.7
3 28 Jan 2000 08:42 – 08:54 Headland 1 8 46
27 Jan 2000 12:50 – 13:12 Headland 2 35 88
27 Jan 2000 09:36 – 09:51 Headland 3 12 33
All sectors 55 167 - - 340 - 451.6
4 28 Jan 2000 09:09 – 09:17 Headland 1 6 65
27 Jan 2000 13:27 – 13:48 Headland 2 28 78
27 Jan 2000 10:06 – 10:22 Headland 3 13 35
All sectors 47 178 - - 340 - 429.5
5 28 Jan 2000 09:38 – 09:44 Headland 1 5 49
27 Jan 2000 14:03 – 14:26 Headland 2 30 67
27 Jan 2000 10:37 – 10:56 Headland 3 15 37
All sectors 50 153 - - 340 - 450.7

Dead count, 25–26 Jan 2000

Count
12

Dead counts

Date Sector Fresh Decomposing Dry Count
25–26 Jan 2000 Headland 1 1 2 2 5
25–26 Jan 2000 Headland 2 3 - 3 6
25–26 Jan 2000 Headland 3 1 - - 1
All sectors 5 2 5 12