Stock assessment graphs

Year	Low Recruitment	Recruitment	High Recruitment	TBiomass	Low SSB	SSB	High SSB	Landings	Catches	Low F	F	High F
1980	86487	174556	352304	37384	9882	14634	21671	10613	10613	0.2018	0.2928	0.4249
1981	97606	196811	396848	37086	9617	13790	19774	4377	4377	0.1996	0.2849	0.4067
1982	105016	212140	428536	41110	9624	14012	20401	4855	4855	0.1965	0.2766	0.3893
1983	81028	168552	350618	42108	10302	15096	22122	3933	3933	0.1969	0.273	0.3785
1984	62123	125367	252996	41440	11396	16108	22770	4066	4066	0.2042	0.2765	0.3745
1985	84494	169397	339614	45297	11821	15829	21195	9187	9187	0.2194	0.2886	0.3796
1986	104293	208772	417916	46723	13713	18312	24453	7440	7440	0.2269	0.2946	0.3825
1987	127675	258590	523743	45388	12111	16548	22610	5823	5823	0.233	0.3004	0.3874
1988	56333	112984	226603	42531	13861	19339	26983	10172	10172	0.2408	0.31	0.3991
1989	72069	145219	292618	38832	10653	14577	19947	4949	4949	0.2406	0.3089	0.3967
1990	64334	127899	254271	36827	10384	13997	18867	6312	6312	0.2426	0.3106	0.3977
1991	40272	80098	159307	28510	7224	9682	12976	4398	4398	0.2428	0.3097	0.395
1992	125367	249946	498320	32598	7771	10333	13739	5270	5270	0.2467	0.3142	0.4001
1993	33227	64151	123858	30001	7746	10366	13872	4409	4409	0.247	0.3151	0.4019
1994	85801	160813	301408	30946	8744	11707	15673	4828	4828	0.2485	0.3184	0.408
1995	73675	141068	270110	30424	8425	11451	15564	5076	5076	0.2489	0.3208	0.4135
1996	46547	91126	178401	25514	6803	9434	13084	5301	5301	0.2503	0.3258	0.4241
1997	68703	131663	252318	24785	6318	8938	12646	6651	6651	0.2524	0.3341	0.4424
1998	90327	168721	315152	27502	7274	9993	13728	4905	4905	0.2507	0.3376	0.4546
1999	42455	80580	152940	23365	6737	9515	13438	4127	4127	0.2442	0.3301	0.4461
2000	43514	83617	160680	20715	6579	9151	12728	2002	2002	0.2368	0.3212	0.4355
2001	59742	117125	229625	21365	4995	7301	10671	5461	5461	0.2354	0.3258	0.451
2002	42909	82951	160359	19954	5156	7455	10777	2393	2393	0.2281	0.3191	0.4466
2003	77060	145947	276417	23017	4685	6582	9248	2399	2399	0.2216	0.314	0.4448
2004	85246	164062	315748	25463	6584	9467	13613	2531	2531	0.2103	0.2975	0.4208
2005	95101	183506	354090	29086	7917	11525	16777	4387	4387	0.2011	0.2854	0.4049
2006	164768	312700	593448	37798	8910	12582	17766	4402	4402	0.1884	0.2674	0.3796
2007	280535	558494	1111864	67778	14117	20064	28518	4629	4629	0.1686	0.2427	0.3494
2008	135431	282377	588766	60962	17712	25591	36975	4895	4895	0.1574	0.2299	0.3357
2009	174503	354336	719495	63577	17576	25719	37636	4594	4594	0.1479	0.2193	0.3253
2010	209188	404335	781532	64991	18596	26876	38844	4894	4894	0.1391	0.2093	0.3148
2011	130101	265402	541409	56954	18727	26769	38264	5202	5202	0.1345	0.2034	0.3077
2012	150431	288659	553900	54014	16594	24029	34794	5693	5693	0.1315	0.1995	0.3026
2013	83855	161135	309635	43958	14919	21597	31263	4828	4828	0.1257	0.1932	0.2968
2014	174063	343176	676594	55492	16028	22788	32399	5083	5083	0.1204	0.1875	0.2919
2015	188595	360051	687380	56840	14750	20975	29828	4891	4891	0.1224	0.1888	0.2912
2016	104946	200386	382621	48339	15922	22720	32420	4327	4327	0.1196	0.186	0.2891
2017	100651	199187	394191	46444	14799	20933	29610	3896	3896	0.115	0.1817	0.2871
2018	172912	366224	775656	54885	13854	20236	29557	6804	6804	0.1154	0.1827	0.2892
2019	86414	343863	1368320	56444	16357	24785	37556	6377	6377	0.1153	0.184	0.2934
2020		274883				24786


Herring (Clupea harengus) in Division 7.a North of 52°30’N (Irish Sea)
Species:	Stock Assessment Graphs
Stock code:	her.27.nirs
Assessment Year:	2020
Key:	13330


Unit weights	tonnes
Unit recruitment	thousands
Fishing pressure description	F
Fishing pressure units	Year-1
Stock size description	SSB
Stock size units	tonnes


Fish reference points

Management plan	SSB_MP
Management plan	F_MP
MSY approach	MSYB_trigger	11831
MSY approach	F_MSY	0.266
Precautionary approach	B_lim	8500
	B_pa	11831
	F_lim	0.397
	F_pa	0.286

Age and Length

Recruitment	1
F	4-6


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