ICES Marine Data

Stock Assessment Graphs

	Stock assessment graphs > View list of published graphs and tables > View published graphs and tables

Whiting (Merlangius merlangus) in Division 7.a (Irish Sea) (Link to advice)	Download graphs and tables(.doc) Download stock data (XML) Download standard graphs (zip) - regular size Download standard graphs (zip) - powerpoint size View on the map View source data

Species: Merlangius merlangus
Stock code: whg.27.7a
Assessment Year:2021
Purpose:Advice
Assessment Key: 14474
Stock Key: 169305

Year	Recruitment	97.5%	2.5%	SSB	97.5%	2.5%	Total	Discards	F	97.5%	2.5%
	Age 0						Catch		Ages 1-3
	thousands			tonnes			tonnes	tonnes	Year-1
1980	542928	917366	168490	35180	57141	13218	16737	3314	0.35	0.57	0.131
1981	317099	581346	52851	46274	68053	24494	21331	3064	0.43	0.67	0.182
1982	281120	526806	35434	34550	53005	16095	17969	801	0.49	0.82	0.173
1983	881413	1318885	443941	21664	36595	6733	12405	1829	0.51	0.90	0.119
1984	632132	1021055	243210	14604	26652	2555	14999	3380	0.62	1.04	0.189
1985	513038	859370	166706	22445	35502	9388	18169	2644	0.74	1.22	0.27
1986	871624	1319425	423823	17993	29461	6525	12129	2066	0.58	0.98	0.182
1987	472840	794397	151282	16029	26753	5305	14270	3859	0.61	1.00	0.22
1988	484433	791095	177772	20374	31593	9154	11856	1611	0.52	0.85	0.187
1989	594310	905284	283336	16876	27099	6652	13408	2103	0.73	1.20	0.27
1990	517611	771529	263693	12524	20640	4409	10656	2444	0.63	1.00	0.25
1991	668786	889286	448286	13511	20485	6538	9946	2598	0.63	0.95	0.32
1992	230093	298562	161624	11566	16338	6794	12791	4203	1.04	1.41	0.66
1993	212460	266774	158147	9414	12215	6613	9230	2707	0.83	1.10	0.56
1994	183093	232116	134069	5414	7114	3715	7936	1173	0.86	1.15	0.57
1995	339894	418464	261323	3900	5146	2654	7044	2151	0.84	1.12	0.57
1996	203161	254209	152113	2701	3685	1718	7966	3631	0.92	1.18	0.65
1997	171419	218097	124742	2954	3827	2081	4205	1928	0.80	1.06	0.54
1998	167329	209924	124734	2443	3207	1679	3533	1304	1.12	1.49	0.76
1999	208488	260533	156442	1448	2007	888	2762	1092	0.89	1.19	0.58
2000	109709	139519	79900	1421	1949	893	2880	2118	1.15	1.49	0.81
2001	192756	241912	143599	1256	1681	832	1745	1012	0.94	1.27	0.60
2002	79853	101093	58612	1120	1546	695	1487	740	1.28	1.67	0.89
2003	121161	156388	85934	1128	1506	751	996	480	0.64	0.93	0.34
2004	94481	117462	71500	1198	1659	737	1038	905	1.78	2.4	1.21
2005	105994	134674	77313	488	735	242	397	272	0.48	0.74	0.22
2006	154757	192859	116654	997	1419	574	1837	1773	1.57	2.1	1.02
2007	103910	130505	77315	530	811	249	1547	1512	1.24	1.65	0.84
2008	149069	185441	112698	673	947	400	1206	1169	1.00	1.38	0.63
2009	92879	117144	68614	686	972	400	1360	1321	1.14	1.52	0.75
2010	92454	115599	69308	770	1059	481	1184	1154	1.19	1.62	0.76
2011	151434	188663	114206	563	816	309	977	946	0.89	1.23	0.55
2012	79035	99903	58166	635	899	371	1399	1339	1.18	1.57	0.79
2013	160728	204783	116673	777	1078	476	981	948	0.68	0.97	0.39
2014	197009	242426	151592	880	1244	517	1974	1951	1.55	2.1	1.02
2015	123897	152059	95736	623	930	316	1549	1521	1.01	1.36	0.66
2016	82217	102716	61717	895	1213	576	780	765	0.57	0.80	0.34
2017	104346	129754	78939	1097	1453	741	704	668	0.45	0.65	0.26
2018	108122	138299	77946	1172	1566	778	899	853	0.45	0.64	0.26
2019	207690	270651	144729	1300	1736	864	1261	1089	0.73	1.08	0.38
2020	129971	201099	58842	1073	1574	573	1118	1030	0.76	1.35	0.169
2021	119971			1393
Average	267969	395548	147610	7918	12520	3634	6260	1743	0.85	1.20	0.50

Fishing pressure

Stock size

2018

2019

2020

2019

2020

2021

Maximum sustainable yield

F_MSY

Above

MSY B_trigger

Below trigger

Precautionary approach

F_pa,F_lim

Harvested unsustainably

B_pa,B_lim

Reduced reproductive capacity

Management plan

F_MGT

Not applicable

B_MGT

Not applicable