New Zealand fur seal demographics

Open Bay Islands, 1991

Mark-recapture estimate, 04–05 Feb 1991

Total marked: 659
Mean estimate: 770.2
Range: 730.4 – 806.3

Mark-recapture counts

Count number	Date	Time	Sector	Unmarked count	Marked count	Dead marked	Dead unmarked	Total marked	Cum. dead	Estimate^?
1	04 Feb 1991		Sector 1	-	-
	04 Feb 1991		Sector 2	-	-
	04 Feb 1991		Sector 3	-	-
	04 Feb 1991		Sector 4	-	-
	04 Feb 1991		Sector 5	-	-
	04 Feb 1991		Sector 6	-	-
	04 Feb 1991		Sector 7	7	34
			All sectors*	37	258	-	-	659	-	753.3
2	04 Feb 1991	10:40 – 13:00	Sector 1	-	-
	04 Feb 1991	10:40 – 13:00	Sector 2	3	23
	04 Feb 1991	10:40 – 13:00	Sector 3	7	45
	04 Feb 1991	10:40 – 13:00	Sector 4	8	55
	04 Feb 1991	10:40 – 13:00	Sector 5	4	37
	04 Feb 1991	10:40 – 13:00	Sector 6	3	75
	04 Feb 1991	10:40 – 13:00	Sector 7	4	35
			All sectors	29	270	2	1	657	3	730.4
3	04 Feb 1991	13:40 – 16:00	Sector 1	-	-
	04 Feb 1991	13:40 – 16:00	Sector 2	6	30
	04 Feb 1991	13:40 – 16:00	Sector 3	24	40
	04 Feb 1991	13:40 – 16:00	Sector 4	9	55
	04 Feb 1991	13:40 – 16:00	Sector 5	3	53
	04 Feb 1991	13:40 – 16:00	Sector 6	4	65
	04 Feb 1991	13:40 – 16:00	Sector 7	8	48
			All sectors	54	291	-	-	657	3	781.7
4	05 Feb 1991	11:40 – 13:40	Sector 1	-	-
	05 Feb 1991	11:40 – 13:40	Sector 2	4	22
	05 Feb 1991	11:40 – 13:40	Sector 3	12	38
	05 Feb 1991	11:40 – 13:40	Sector 4	12	58
	05 Feb 1991	11:40 – 13:40	Sector 5	4	61
	05 Feb 1991	11:40 – 13:40	Sector 6	8	68
	04 Feb 1991	11:40 – 13:40	Sector 7	12	37
			All sectors	52	284	5	-	652	8	779.1
5	05 Feb 1991	14:20 – 16:55	Sector 1	-	-
	05 Feb 1991	14:20 – 16:55	Sector 2	4	33
	05 Feb 1991	14:20 – 16:55	Sector 3	12	32
	05 Feb 1991	14:20 – 16:55	Sector 4	17	48
	05 Feb 1991	14:20 – 16:55	Sector 5	2	58
	05 Feb 1991	14:20 – 16:55	Sector 6	5	34
	04 Feb 1991	14:20 – 16:55	Sector 7	14	35
			All sectors	54	240	-	-	652	8	806.3

Dead count, 04 Feb 1991

Count: 1

Dead counts

Date	Sector	Fresh	Decomposing	Dry	Count
04 Feb 1991	Sector 6	1	-	-	1

The New Zealand fur seal demographic database was developed by Dragonfly Science. The data are copyright Department of Conservation, and are made available under a creative commons attribution 3.0 New Zealand licence, following the recommendations of NZGOAL. This licence allows the data to be used for any other purpose and republished, provided only that attribution is given.