New Zealand fur seal demographics

Cape Foulwind, 2011

Mark-recapture estimate, 06–08 Feb 2011

Total marked
175
Mean estimate
203.2
Range
200.6 – 209.7

Mark-recapture counts

Count number Date Time Sector Unmarked count Marked count Dead marked Dead unmarked Total marked Cum. dead Estimate?
1 06 Feb 2011 19:33 – 19:41 Block field 2 9
06 Feb 2011 19:18 – 19:29 Boulder field 4 24
06 Feb 2011 19:04 – 19:12 Central 1 15
06 Feb 2011 19:42 – 19:50 North gut 3 9
06 Feb 2011 18:57 – 19:02 South gut 3 8
All sectors 13 65 - - 175 - 209.7
2 08 Feb 2011 07:49 – 07:55 Block field 1 5
08 Feb 2011 07:38 – 07:45 Boulder field 1 18
08 Feb 2011 07:30 – 07:35 Central 1 11
08 Feb 2011 07:56 – 07:59 North gut 3 5
08 Feb 2011 07:25 – 07:29 South gut 1 7
All sectors 7 46 - - 175 - 201.2
3 08 Feb 2011 08:27 – 08:33 Block field 2 6
08 Feb 2011 08:18 – 08:23 Boulder field 4 24
08 Feb 2011 08:10 – 08:14 Central 2 15
08 Feb 2011 08:34 – 08:38 North gut 1 6
08 Feb 2011 08:05 – 08:09 South gut 1 10
All sectors 10 61 - - 175 - 203.4
4 08 Feb 2011 09:03 – 09:07 Block field 1 5
08 Feb 2011 08:54 – 08:59 Boulder field 2 21
08 Feb 2011 08:47 – 08:50 Central 4 21
08 Feb 2011 09:08 – 09:12 North gut 2 6
08 Feb 2011 08:42 – 08:45 South gut - 7
All sectors 9 60 - - 175 - 201.0
5 08 Feb 2011 09:37 – 09:43 Block field - 1
08 Feb 2011 09:29 – 09:34 Boulder field 2 19
08 Feb 2011 09:21 – 09:25 Central 4 23
08 Feb 2011 09:45 – 09:49 North gut 1 8
08 Feb 2011 09:17 – 09:20 South gut 1 3
All sectors 8 54 - - 175 - 200.6

Dead count, 24–25 Jan 2011

Count
20

Dead counts

Date Sector Fresh Decomposing Dry Count
24–25 Jan 2011 Block field - - 1 1
24–25 Jan 2011 Boulder field - 2 1 3
24–25 Jan 2011 Central - 2 8 10
24–25 Jan 2011 North gut - - 1 1
24–25 Jan 2011 South gut 1 - 4 5
All sectors 1 4 15 20