New Zealand fur seal demographics

Wekakura Point, 2004

Mark-recapture estimate, 28–29 Jan 2004

Total marked
395
Mean estimate
576.7
Range
561.9 – 587.6

Mark-recapture counts

Count number Date Time Sector Unmarked count Marked count Dead marked Dead unmarked Total marked Cum. dead Estimate?
1 28 Jan 2004 11:42 – 11:56 Headland 1 13 48
28 Jan 2004 08:20 – 08:40 Headland 2 59 78
29 Jan 2004 09:10 – 09:27 Headland 3 15 51
All sectors 87 177 2 - 393 2 587.6
2 28 Jan 2004 12:16 – 12:24 Headland 1 10 45
28 Jan 2004 09:00 – 09:20 Headland 2 45 62
29 Jan 2004 09:47 – 10:08 Headland 3 20 50
All sectors 75 157 - - 393 2 582.0
3 28 Jan 2004 12:44 – 12:55 Headland 1 9 44
28 Jan 2004 09:40 – 10:03 Headland 2 36 56
29 Jan 2004 10:28 – 10:50 Headland 3 16 43
All sectors 61 143 - - 393 2 561.9
4 28 Jan 2004 13:15 – 13:27 Headland 1 17 46
28 Jan 2004 10:23 – 10:48 Headland 2 49 73
29 Jan 2004 11:10 – 11:38 Headland 3 10 42
All sectors 76 161 - - 393 2 579.8
5 28 Jan 2004 18:36 – 18:53 Headland 1 15 60
29 Jan 2004 08:35 – 08:55 Headland 2 57 85
29 Jan 2004 12:00 – 12:22 Headland 3 17 52
All sectors 89 197 - - 393 2 572.1

Dead count, 26–27 Jan 2004

Count
28

Dead counts

Date Sector Fresh Decomposing Dry Count
26–27 Jan 2004 Headland 1 1 13 8 22
26–27 Jan 2004 Headland 2 1 - 4 5
26–27 Jan 2004 Headland 3 - - 1 1
All sectors 2 13 13 28