New Zealand fur seal demographics

Wekakura Point, 2011

Mark-recapture estimate, 24–25 Jan 2011

Total marked
240
Mean estimate
300.0
Range
289.8 – 310.4

Mark-recapture counts

Count number Date Time Sector Unmarked count Marked count Dead marked Dead unmarked Total marked Cum. dead Estimate?
1 24 Jan 2011 12:27 – 12:40 Headland 1 11 50
25 Jan 2011 07:55 – 08:17 Headland 2 14 37
25 Jan 2011 08:30 – 08:48 Headland 3 8 42
All sectors 33 129 - - 240 - 301.2
2 24 Jan 2011 13:00 – 13:12 Headland 1 9 49
25 Jan 2011 11:40 – 12:00 Headland 2 10 39
25 Jan 2011 09:08 – 09:25 Headland 3 6 32
All sectors 25 120 - - 240 - 289.8
3 24 Jan 2011 08:25 – 08:41 Headland 1 8 53
25 Jan 2011 10:00 – 10:20 Headland 2 17 45
25 Jan 2011 09:45 – 10:03 Headland 3 11 33
All sectors 36 131 - - 240 - 305.7
4 24 Jan 2011 09:01 – 09:10 Headland 1 15 53
25 Jan 2011 10:40 – 11:03 Headland 2 8 25
25 Jan 2011 10:23 – 10:45 Headland 3 10 34
All sectors 33 112 - - 240 - 310.4
5 24 Jan 2011 09:30 – 09:40 Headland 1 13 55
25 Jan 2011 11:23 – 11:48 Headland 2 9 32
25 Jan 2011 11:05 – 11:25 Headland 3 4 30
All sectors 26 117 - - 240 - 293.1

Dead count, 24–25 Jan 2011

Count
9

Dead counts

Date Sector Fresh Decomposing Dry Count
24–25 Jan 2011 Headland 1 1 - 2 3
24–25 Jan 2011 Headland 2 - 1 1 2
24–25 Jan 2011 Headland 3 1 1 2 4
All sectors 2 2 5 9