New Zealand fur seal demographics

Cape Foulwind, 2006

Mark-recapture estimate, 02 Feb 2006

Total marked
200
Mean estimate
269.3
Range
257.4 – 281.2

Mark-recapture counts

Count number Date Time Sector Unmarked count Marked count Dead marked Dead unmarked Total marked Cum. dead Estimate?
1 02 Feb 2006 09:27 – 09:30 Block field 4 2
02 Feb 2006 09:13 – 09:16 Central - 5
02 Feb 2006 09:33 – 09:36 North gut 2 -
02 Feb 2006 09:06 – 09:11 South gut 2 8
02 Feb 2006 09:20 – 09:25 Stone field 13 36
All sectors 21 51 - - 200 - 281.2
2 02 Feb 2006 10:04 – 10:07 Block field 2 2
02 Feb 2006 09:49 – 09:52 Central 1 4
02 Feb 2006 10:10 – 10:13 North gut 2 3
02 Feb 2006 09:44 – 09:47 South gut 4 8
02 Feb 2006 09:54 – 10:01 Stone field 8 32
All sectors 17 49 - - 200 - 268.3
3 02 Feb 2006 10:41 – 10:44 Block field 2 2
02 Feb 2006 10:30 – 10:32 Central - 2
02 Feb 2006 10:45 – 10:48 North gut 2 4
02 Feb 2006 10:22 – 10:24 South gut 3 7
02 Feb 2006 10:34 – 10:39 Stone field 7 27
All sectors 14 42 - - 200 - 265.4
4 02 Feb 2006 11:14 – 11:16 Block field 2 1
02 Feb 2006 10:59 – 11:01 Central 1 3
02 Feb 2006 11:17 – 11:20 North gut 2 3
02 Feb 2006 10:55 – 10:58 South gut 2 10
02 Feb 2006 11:04 – 11:10 Stone field 7 20
All sectors 14 37 - - 200 - 274.1
5 02 Feb 2006 11:59 – 12:01 Block field 1 3
02 Feb 2006 11:34 – 11:36 Central 1 6
02 Feb 2006 12:03 – 12:05 North gut 1 -
02 Feb 2006 11:30 – 11:32 South gut 5 12
02 Feb 2006 11:48 – 11:52 Stone field 4 20
All sectors 12 41 - - 200 - 257.4

Dead count, 24–25 Jan 2006

Count
2

Dead counts

Date Sector Fresh Decomposing Dry Count
24–25 Jan 2006 Main colony 1 1 - 2
24–25 Jan 2006 North gut - - - -
24–25 Jan 2006 Rail tunnel - - - -
24–25 Jan 2006 South gut - - - -
All sectors 1 1 - 2