Stock assessment graphs

ICES Marine Data

Stock Assessment Graphs


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Herring (Clupea harengus) in Division 5.a, summer-spawning herring (Iceland grounds)
Species:	Stock Assessment Graphs
Stock code:	her.27.5a
Assessment Year:	2019
Key:	12899


Unit weights	tonnes
Unit recruitment	thousands
Fishing pressure description	Harvest rate
Fishing pressure units	%
Stock size description	SSB
Stock size units	tonnes


Fish reference points

Management plan	SSB_MP
Management plan	F_MP
MSY approach	MSYB_trigger
MSY approach	F_MSY	0.22
Precautionary approach	B_lim
	B_pa
	F_lim	0.61
	F_pa	0.45

Age and Length

Recruitment	3
F

Fish data

Year	Recruitment	SSB	Landings	Catches	F
1987	529828	383813	75450	75450	0.181650090644479
1988	270996	423301	92814	92814	0.205209954719117
1989	447331	385514	100714	100714	0.251103880723537
1990	300826	349855	104227	104227	0.280574571238596
1991	840564	309714	106828	106828	0.344412025469493
1992	1033123	343182	107409	107409	0.307345631851388
1993	635460	423585	102629	102629	0.226250418863865
1994	691750	440724	133653	133653	0.29013813000241
1995	202724	406169	125480	125480	0.288196087258095
1996	181404	307460	95859	95859	0.297421656841452
1997	772618	268868	64807	64807	0.243016833097717
1998	320528	298355	86077	86077	0.266139604486934
1999	552736	289667	92568	92568	0.311750244165291
2000	391543	306415	99900	99900	0.308132666689286
2001	469039	272023	93633	93633	0.33137621302529
2002	1457991	297531	95969	95969	0.345214713774919
2003	1077318	390066	128817	128817	0.312910215364585
2004	666568	487511	112382	112382	0.217216172440053
2005	994341	527452	102446	102446	0.190091124837873
2006	739701	614691	129764	129764	0.19995839464986
2007	665246	571650	158029	158029	0.264066479069052
2008	532417	568872	150674	150674	0.252232314743824
2009	454849	494112	45728	45728	0.0832524682805693
2010	442789	456136	43415	43415	0.0844972012674094
2011	604085	433481	49390	49390	0.103562299884045
2012	424148	448092	73319	73319	0.155
2013	509458	405655	71454	71454	0.16972285298952
2014	230149	434995	95003	95003	0.204668888510682
2015	197044	371452	69748	69748	0.178773641729912
2016	230172	338442	60386	60386	0.171182025121967
2017	66044	298931	35034	35034	0.105591808840695
2018	159683	256086	40683	40683	0.145232111493481
2019	360000	212481

Custom reference points

CustomRefPointName	CustomRefPointValue	CustomRefPointNotes
MSY Btrigger=Bpa	273000
MGT Btrigger=Blim	200000
HR MGT	0.15
custom4
custom5

Custom fish data column names

CustomName1	CustomName2
F	Biomass 4+

Custom fish data

Year	Custom1	Custom2
1987	0.347355070097676	415359
1988	0.265668728758186	452288
1989	0.322395723213905	401085
1990	0.39966650765465	371477
1991	0.435852639155948	310175
1992	0.415054338657611	349473
1993	0.248099356421075	453608
1994	0.31237042384557	460653
1995	0.343449274358163	435398
1996	0.360683837856181	322300
1997	0.250072562389506	266677
1998	0.279762614577498	323428
1999	0.377038291862893	296930
2000	0.334820983686504	324211
2001	0.41427260568971	282558
2002	0.417630924405283	277998
2003	0.279156807987435	411674
2004	0.243647200745545	517374
2005	0.251948354112408	538931
2006	0.142930136099848	648955
2007	0.319874615712387	598444
2008	0.307913973066964	597362
2009	0.0874742613558019	549269
2010	0.0994599787885166	513804
2011	0.123793409014138	476911
2012	0.208	472686
2013	0.164160896191884	421004
2014	0.270700561763971	464179
2015	0.21524478843593	390147
2016	0.195933344683759	352759
2017	0.109615233847983	330698
2018	0.175191731404644	280124
2019		230479.955

Sensivity data