New Zealand fur seal demographics

Wekakura Point, 2007

Mark-recapture estimate, 23–25 Jan 2007

Total marked
313
Mean estimate
427.8
Range
409.8 – 470

Mark-recapture counts

Count number Date Time Sector Unmarked count Marked count Dead marked Dead unmarked Total marked Cum. dead Estimate?
1 23 Jan 2007 07:42 – 07:56 Headland 1 13 45
23 Jan 2007 07:42 – 07:56 Headland 2 21 57
24 Jan 2007 09:30 – 09:48 Headland 3 12 35
All sectors 46 137 - - 313 - 417.7
2 23 Jan 2007 08:16 – 08:32 Headland 1 11 46
23 Jan 2007 08:16 – 08:32 Headland 2 22 48
24 Jan 2007 10:10 – 10:28 Headland 3 15 42
All sectors 48 136 - - 313 - 423.0
3 23 Jan 2007 08:52 – 09:04 Headland 1 15 45
23 Jan 2007 08:52 – 09:04 Headland 2 26 53
25 Jan 2007 08:20 – 08:42 Headland 3 26 35
All sectors 67 133 - - 313 - 470
4 24 Jan 2007 19:37 – 19:49 Headland 1 15 71
23 Jan 2007 19:37 – 19:49 Headland 2 21 49
25 Jan 2007 09:02 – 09:22 Headland 3 13 38
All sectors 49 158 - - 313 - 409.8
5 24 Jan 2007 20:10 – 20:22 Headland 1 10 52
23 Jan 2007 20:10 – 20:22 Headland 2 21 48
25 Jan 2007 09:42 – 10:03 Headland 3 19 48
All sectors 50 148 - - 313 - 418.4

Dead count, 22–24 Jan 2007

Count
9

Dead counts

Date Sector Fresh Decomposing Dry Count
22–24 Jan 2007 Headland 1 1 - 2 3
22–24 Jan 2007 Headland 2 1 - 5 6
22–24 Jan 2007 Headland 3 - - - -
All sectors 2 - 7 9