Stock assessment graphs

ICES Marine Data

Stock Assessment Graphs


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Horse mackerel (Trachurus trachurus) in divisions 3.a, 4.b-c, and 7.d (Skagerrak and Kattegat, southern and central North Sea, eastern English Channel)
Species:	Trachurus trachurus
Stock code:	hom.27.3a4bc7d
Assessment Year:	2021
Key:	16767


Unit weights	tonnes
Unit recruitment	thousands
Fishing pressure description	F/Fmsy length proxy
Fishing pressure units	ratio
Stock size description	Abundance Index
Stock size units	thousands


Fish reference points

Management plan	SSB_MP
Management plan	F_MP
MSY approach	MSYB_trigger
MSY approach	F_MSY
Precautionary approach	B_lim
	B_pa
	F_lim
	F_pa

Age and Length

Recruitment	0
F

Fish data

Year	Low SSB	SSB	High SSB	Landings	Catches	Discards	F
1982				4035	4035	0
1983				8020	8020	0
1984				29478	29478	0
1985				25612	25612	0
1986				24252	24252	0
1987				12336	12336	0
1988				21806	21806	0
1989				32788	32788	0
1990				21023	21023	0
1991				12913	12913	0
1992	0.5916	1.372	2.74	14643	15043	400
1993	0.2734	0.5555	1.007	12687	13617	930
1994	0.5482	1.167	2.19	4999	5629	630
1995	0.5235	1.347	2.655	16726	16756	30
1996	0.4641	1.054	1.991	18631	18843	212
1997	0.279	0.6251	1.174	19530	19540	10
1998	0.1906	0.4057	0.7332	30417	30500	83
1999	0.208	0.4456	0.8346	37224	37224	0
2000	0.2184	0.4237	0.7792	45126	45130	3.7
2001	0.2456	0.5157	0.9144	28331	28331	0
2002	0.2103	0.4266	0.8473	27264	27264	0
2003	0.1369	0.2891	0.5902	32028	32028	0
2004	0.1581	0.3501	0.6526	35435	35435	0
2005	0.3183	0.6569	1.244	30786	30848	62.05
2006	0.3292	0.6937	1.322	34162	34240	78
2007	0.1466	0.3418	0.7331	40964	41103	139
2008	0.0784	0.1635	0.3605	35704	35704	0
2009	0.04548	0.09808	0.1981	44847	45883	1036
2010	0.07957	0.1948	0.3967	24146	24149	2.427
2011	0.106	0.2331	0.4667	27619	27619	0
2012	0.08273	0.1524	0.4118	21378	21378	0
2013	0.07361	0.1879	0.4278	18645	18645	0
2014	0.1386	0.326	0.7016	13373	13380	7.477
2015	0.1868	0.4445	0.8979	9998	12002	2004
2016	0.2233	0.5215	0.9601	13814	15341	1527	0.9222
2017	0.05875	0.1336	0.2988	13366	14579	1213	0.9317
2018	0.04754	0.1134	0.2251	14508	14773	264.6	0.9271
2019	0.08974	0.2011	0.4293	11618	11803	185.1	0.9786
2020				12386	12587	200.9	0.9274

Custom reference points

Custom fish data column names

CustomName1	CustomName2	CustomName3

Custom fish data

Year	Custom1	Custom2	Custom3
1982
1983
1984
1985
1986
1987
1988
1989
1990
1991
1992	2.037	4.266	9.357
1993	0.8948	1.853	3.762
1994	1.257	2.588	5.062
1995	1.06	2.015	4.01
1996	0.3053	0.7296	1.55
1997	0.9278	2.174	4.84
1998	0.3152	0.6499	1.252
1999	0.773	1.437	2.64
2000	0.7722	1.566	3.041
2001	1.183	2.192	4.797
2002	1.169	2.399	4.76
2003	0.9418	1.787	3.28
2004	0.5084	1.001	1.817
2005	0.4079	0.802	1.491
2006	0.2827	0.5296	0.9627
2007	0.3161	0.5994	1.077
2008	0.2802	0.5315	0.9834
2009	0.3526	0.6903	1.252
2010	1.128	2.255	4.618
2011	0.2586	0.5045	0.9812
2012	0.1662	0.3154	0.6306
2013	0.5867	1.085	2.083
2014	0.7717	1.545	2.876
2015	0.7068	1.47	3.132
2016	1.505	3.045	6.312
2017	0.4429	0.9382	1.909
2018	1.598	3.177	7.291
2019	0.3807	0.8113	1.62
2020

Sensivity data