New Zealand fur seal demographics

Wekakura Point, 2003

Mark-recapture estimate, 29–30 Jan 2003

Total marked
453
Mean estimate
574.7
Range
563.1 – 590.9

Mark-recapture counts

Count number Date Time Sector Unmarked count Marked count Dead marked Dead unmarked Total marked Cum. dead Estimate?
1 30 Jan 2003 12:15 – 12:25 Headland 1 9 63
29 Jan 2003 12:25 – 12:45 Headland 2 29 93
30 Jan 2003 14:46 – 15:00 Headland 3 21 47
All sectors 59 203 - - 453 - 584.3
2 30 Jan 2003 12:45 – 12:55 Headland 1 12 59
29 Jan 2003 15:25 – 15:41 Headland 2 26 80
30 Jan 2003 13:50 – 14:05 Headland 3 20 51
All sectors 58 190 - - 453 - 590.9
3 30 Jan 2003 17:18 – 17:30 Headland 1 10 57
29 Jan 2003 16:00 – 16:25 Headland 2 15 66
30 Jan 2003 14:25 – 14:40 Headland 3 19 49
All sectors 44 172 - - 453 - 568.5
4 30 Jan 2003 17:50 – 18:00 Headland 1 11 52
29 Jan 2003 16:45 – 17:02 Headland 2 15 56
30 Jan 2003 15:00 – 15:17 Headland 3 11 39
All sectors 37 147 - - 453 - 566.5
5 30 Jan 2003 18:20 – 18:30 Headland 1 6 58
30 Jan 2003 13:18 – 13:37 Headland 2 23 71
30 Jan 2003 15:40 – 16:00 Headland 3 12 39
All sectors 41 168 - - 453 - 563.1

Dead count, 27–28 Jan 2003

Count
3

Dead counts

Date Sector Fresh Decomposing Dry Count
27–28 Jan 2003 Headland 1 1 - - 1
27–28 Jan 2003 Headland 2 - - - -
27–28 Jan 2003 Headland 3 - 1 1 2
All sectors 1 1 1 3