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Most recent kelp forest fish stock assessments

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Gopher

Source:	STOCK ASSESSMENT of the GOPHER ROCKFISH (Sebastes carnatus)
Authors:	Meisha Key, Alec D. MacCall, Traci Bishop, Bob Leos
Year:	Aug-05
Online Source:	http://www.pcouncil.org/groundfish/gfsafe0406/gfsafe0406.html
Stock Notes:	This is the first assessment of gopher rockfish (Sebastes carnatus) and is
	restricted to the portion of the stock north of Point Conception (lat. 34o 30¢ N). There is
	evidence that supports differences in size and growth of gopher rockfish in southern
	California that indicates the need for a separate assessment on the southern California
	segment. Life history information for the southern segment is not known.

Tables included below:	(Page 6) Time series of stock biomass, recruitment, and exploitation rates (1990-2005) produced from the baseline assessment model.
	(Page 7) Uncertainty in estimates of stock spawning biomass estimates in the baseline assessment model.
	(Page 1) Recent Gopher Rockfish Landings (mtons)

(Page 6) Time series of stock biomass, recruitment, and exploitation rates (1990-2005) produced from the baseline assessment model.
Year	To tal (Age 0+) Biomass	Age 1+ Biomass	Spawning Biomass	Age-0 Recruits	Commercial Catch	Commercial Harvest Rate	Recreational Catch	Recreational Harvest Rate	Spawning Stock Depletion
virgin	2,663	2,440	1,995	2,758	--	--	--	--	100%
1990	2,318	2,083	1,651	2,917	43	6.10%	116	13.70%	83%
1991	2,530	2,048	1,594	5,973	64	8.50%	120	14.00%	80%
1992	2,804	2,170	1,498	7,863	74	10.00%	132	16.00%	75%
1993	2,588	2,358	1,406	2,861	65	9.50%	143	19.10%	71%
1994	2,822	2,171	1,312	8,073	40	6.40%	119	17.80%	66%
1995	2,735	2,443	1,408	3,613	57	9.80%	58	9.10%	71%
1996	2,980	2,492	1,656	6,048	51	8.70%	38	5.60%	83%
1997	3,007	2,734	1,806	3,378	42	6.40%	38	4.90%	91%
1998	2,964	2,814	2,065	1,871	36	4.60%	40	4.30%	104%
1999	2,941	2,796	2,219	1,799	35	3.80%	49	4.50%	111%
2000	2,898	2,782	2,376	1,440	32	3.10%	59	4.90%	119%
2001	2,947	2,725	2,432	2,745	40	3.50%	104	7.90%	122%
2002	2,888	2,666	2,327	2,750	31	2.60%	77	5.80%	117%
2003	2,814	2,592	2,201	2,751	13	1.00%	134	10.20%	110%
2004	2,666	2,444	2,002	2,754	15	1.20%	35	2.80%	100%
2005	2,607	2,385	1,931	2,746	--	--	--	--	97%

(Page 7) Uncertainty in estimates of stock spawning biomass estimates in the baseline assessment model.
Year	Spawning Biomass	Standard Deviation	CV
1965	1,879	168	0.09
1966	1,865	167	0.09
1967	1,862	167	0.09
1968	1,857	166	0.09
1969	1,808	165	0.09
1970	1,725	163	0.09
1971	1,647	161	0.1
1972	1,572	157	0.1
1973	1,484	151	0.1
1974	1,397	144	0.1
1975	1,305	136	0.1
1976	1,188	126	0.11
1977	1,076	116	0.11
1978	994	106	0.11
1979	884	97	0.11
1980	810	90	0.11
1981	696	85	0.12
1982	642	87	0.14
1983	734	100	0.14
1984	865	107	0.12
1985	943	113	0.12
1986	1,042	121	0.12
1987	1,288	133	0.1
1988	1,472	140	0.1
1989	1,575	141	0.09
1990	1,651	144	0.09
1991	1,594	145	0.09
1992	1,498	148	0.1
1993	1,406	155	0.11
1994	1,312	163	0.12
1995	1,408	189	0.13
1996	1,656	228	0.14
1997	1,806	252	0.14
1998	2,065	290	0.14
1999	2,219	311	0.14
2000	2,376	338	0.14
2001	2,432	352	0.14
2002	2,327	352	0.15
2003	2,201	344	0.16
2004	2,002	329	0.16
2005	1,931	312	0.16

(Page 1) Recent Gopher Rockfish Landings (mtons)
Year	Commercial	Recreational
1990	43	116
1991	64	120
1992	74	132
1993	65	143
1994	40	119
1995	57	58
1996	51	38
1997	42	38
1998	36	40
1999	35	49
2000	32	59
2001	40	104
2002	31	77
2003	13	134
2004	15	35

Spreadsheet's Author: Carrie Kappel
Last Updated with Excel 97

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by Carrie Kappel — last modified 12-02-2007 18:11

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Most recent kelp forest fish stock assessments

Gopher