New Zealand fur seal demographics

Open Bay Islands, 1996

Mark-recapture estimate, 01–02 Feb 1996

Total marked
742
Mean estimate
1323.3
Range
1242.3 – 1362.4

Mark-recapture counts

Count number Date Time Sector Unmarked count Marked count Dead marked Dead unmarked Total marked Cum. dead Estimate?
1 01 Feb 1996 11:30 – 11:36 Sector 1 15 -
01 Feb 1996 11:36 – 11:45 Sector 2 13 24
01 Feb 1996 11:45 – 11:54 Sector 3 24 32
01 Feb 1996 12:00 – 12:10 Sector 4 28 35
01 Feb 1996 12:15 – 12:25 Sector 5 37 56
01 Feb 1996 12:30 – 12:48 Sector 6 37 63
02 Feb 1996 09:58 – 10:04 Sector 7 31 35
All sectors 185 245 - - 742 - 1300.8
2 01 Feb 1996 14:12 – 14:13 Sector 1 - -
01 Feb 1996 14:08 – 14:12 Sector 2 9 18
01 Feb 1996 13:55 – 14:06 Sector 3 26 26
01 Feb 1996 13:34 – 13:50 Sector 4 27 38
01 Feb 1996 13:25 – 13:34 Sector 5 27 43
01 Feb 1996 13:10 – 13:22 Sector 6 16 34
02 Feb 1996 10:14 – 10:18 Sector 7 29 39
All sectors 134 198 - - 742 - 1242.3
3 01 Feb 1996 18:13 – 18:13 Sector 1 8 -
01 Feb 1996 18:13 – 18:23 Sector 2 9 28
01 Feb 1996 18:23 – 18:32 Sector 3 40 35
01 Feb 1996 18:36 – 18:49 Sector 4 23 37
01 Feb 1996 18:52 – 19:00 Sector 5 28 36
01 Feb 1996 19:03 – 19:20 Sector 6 34 46
02 Feb 1996 10:28 – 10:33 Sector 7 35 31
All sectors 177 213 - - 742 - 1356.5
4 01 Feb 1996 20:41 – 20:42 Sector 1 9 -
01 Feb 1996 20:35 – 20:41 Sector 2 10 22
01 Feb 1996 20:30 – 20:35 Sector 3 19 22
01 Feb 1996 20:16 – 20:27 Sector 4 41 36
01 Feb 1996 20:08 – 20:16 Sector 5 19 42
01 Feb 1996 19:57 – 20:08 Sector 6 18 49
02 Feb 1996 10:43 – 10:47 Sector 7 46 22
All sectors 162 193 - - 742 - 1362.4
5 02 Feb 1996 08:47 – 08:47 Sector 1 9 -
02 Feb 1996 08:47 – 08:54 Sector 2 9 21
02 Feb 1996 08:54 – 08:59 Sector 3 16 26
02 Feb 1996 09:02 – 09:14 Sector 4 34 28
02 Feb 1996 09:14 – 09:24 Sector 5 29 51
02 Feb 1996 09:25 – 09:42 Sector 6 25 52
02 Feb 1996 11:55 – 11:58 Sector 7 42 20
All sectors 164 198 - - 742 - 1354.3