New Zealand fur seal demographics

Wekakura Point, 2006

Mark-recapture estimate, 23–24 Jan 2006

Total marked
378
Mean estimate
544.3
Range
507.5 – 560.9

Mark-recapture counts

Count number Date Time Sector Unmarked count Marked count Dead marked Dead unmarked Total marked Cum. dead Estimate?
1 23 Jan 2006 08:50 – 09:05 Headland 1 25 64
24 Jan 2006 12:26 – 12:45 Headland 2 38 89
24 Jan 2006 12:52 – 01:13 Headland 3 20 18
All sectors 83 171 - - 378 - 560.9
2 23 Jan 2006 09:25 – 09:37 Headland 1 18 55
24 Jan 2006 03:40 – 04:05 Headland 2 40 88
24 Jan 2006 01:27 – 01:45 Headland 3 20 26
All sectors 78 169 - - 378 - 551.9
3 23 Jan 2006 09:57 – 10:12 Headland 1 12 49
24 Jan 2006 01:27 – 01:45 Headland 2 36 70
24 Jan 2006 02:05 – 02:23 Headland 3 19 27
All sectors 67 146 - - 378 - 550.7
4 23 Jan 2006 10:32 – 10:43 Headland 1 10 55
24 Jan 2006 02:05 – 02:25 Headland 2 24 76
24 Jan 2006 02:43 – 03:00 Headland 3 20 26
All sectors 54 157 - - 378 - 507.5
5 23 Jan 2006 11:03 – 11:17 Headland 1 12 64
24 Jan 2006 02:45 – 03:12 Headland 2 36 63
24 Jan 2006 03:20 – 03:35 Headland 3 22 26
All sectors 70 153 - - 378 - 550.3

Dead count, 23–24 Jan 2006

Count
10

Dead counts

Date Sector Fresh Decomposing Dry Count
23–24 Jan 2006 Headland 1 4 - - 4
23–24 Jan 2006 Headland 2 1 3 1 5
23–24 Jan 2006 Headland 3 - 1 - 1
All sectors 5 4 1 10