Marine Trophic Index in LME: Arctic Ocean

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Start year: End year:

Compute regression

Start year: End year:

Year	Mean trophic level	Mean max. length (cm)	FiB Index	Expansion factor
1950	4.13	156.8	0	1
1951	4.4	184.5	0.57	1.77
1952	4.4	184.6	0.66	1.93
1953	4.4	184.3	0.76	2.14
1954	4.42	185.6	1.35	3.86
1955	4.42	183.6	-0.48	0.62
1956	4.35	177.6	-1.22	0.3
1957	4.22	170.9	-1.66	0.19
1958	4.26	172.1	-0.73	0.48
1959	4.28	173.9	-0.22	0.8
1960	4.35	179.5	0.57	1.77
1961	4.23	272.4	-0.25	0.78
1962	4.08	229.5	-0.51	0.6
1963	4.17	240.9	-0.1	0.9
1964	4.28	226.6	0.42	1.52
1965	4.14	232.4	-0.31	0.73
1966	4.09	252.2	-0.76	0.47
1967	4.17	217.4	-0.21	0.81
1968	4.06	194.4	-0.63	0.53
1969	4.06	227.4	-0.66	0.52
1970	4.04	199.2	-0.61	0.54
1971	3.94	126.6	-0.18	0.84
1972	3.95	133.7	-0.46	0.63
1973	3.94	120	-0.92	0.4
1974	4.23	143.7	-0.97	0.38
1975	3.72	85.5	-1.04	0.35
1976	3.67	100.2	-1.28	0.28
1977	3.24	63	-2.51	0.08
1978	2.75	36.7	-3.07	0.05
1979	2.75	28.1	-2.57	0.08
1980	3.05	39.9	-2.54	0.08
1981	2.99	35.4	-1.47	0.23
1982	2.78	32.2	-2.06	0.13
1983	2.61	29.3	-2.21	0.11
1984	2.51	15.6	-2.55	0.08
1985	2.49	16.2	-2.98	0.05
1986	2.77	36.8	-3.22	0.04
1987	2.88	50.5	-2.85	0.06
1988	2.81	45.7	-2.55	0.08
1989	2.7	35.5	-2.54	0.08
1990	2.91	52.3	-1.71	0.18
1991	2.7	37.3	-2.6	0.07
1992	2.81	44.7	-2.3	0.1
1993	2.51	23.7	-2.91	0.05
1994	2.61	43.3	-3.85	0.02
1995	2.78	70	-3.24	0.04
1996	2.6	35.2	-3.57	0.03
1997	2.52	26.7	-3.7	0.02
1998	2.52	25.7	-3.37	0.03
1999	2.88	22.6	-1.67	0.19
2000	2.72	32.9	-1.83	0.16
2001	3	83.5	-1.3	0.27
2002	2.78	57.5	-2.13	0.12
2003	3.05	88.9	-1.74	0.18
2004	3.21	119.9	-1.61	0.2
2005	3.04	100.6	-2.01	0.13
2006	2.98	92.8	-2.29	0.1

TL	SLMax(cm)	Common Name	Scientific Name
4.42000007629395	186	Atlantic cod	Gadus morhua
4.13424253463745	32	Squids	Teuthida
4.08555555343628	35	Arrow squids	Ommastrephidae
4.05000019073486	729	Sharks and rays	Elasmobranchii
4	300	Sharks rays and skates etc	Sharks or rays and chimaeras
4	150	Various sharks	Sharks rays and chimaeras
3.98279094696045	190	Sea basses or groupers and fairy basslets	Serranidae
3.91417288780212	80	Cods	Gadiformes
3.84074592590332	72	Cods and haddocks	Gadidae
3.80988097190857	27	Cephalopods	Cephalopoda
3.78355598449707	45	Scorpionfishes and flatheads	Scorpaeniformes
3.75	180	Northern wolffish	Anarhichas denticulatus
3.74000000953674	25	Searobins	Triglidae
3.72000002861023	150	Cartilaginous fishes	Sharks rays and chimaeras
3.70222210884094	28	Cuttlefishes	Sepiida
3.57180309295654	50	Flatfishes	Pleuronectiformes
3.53143930435181	56	Perch-likes	Perciformes
3.47000002861023	23	Armored searobins or armored gurnards	Peristediidae
3.39750003814697	35	Rocklings	Gaidropsarus
3.34999990463257	36	Argentines	Argentina
3.30864906311035	164	Porgies	Sparidae
3.29999995231628	140	Salmonids	Salmonidae
3.19000005722046	9	Crongonid shrimp	Crangonidae
2.70000004768372	25	Herrings sardines and anchovies	Clupeoids
2.65000009536743	13	Natantian decapods	Shrimps and prawns
2.59999990463257	30	Marine crabs	Brachyura
2.46000003814697	14	Northern prawn	Pandalus borealis
2	10	Scallops	Pectinidae
2	8	Venus clams	Veneridae

FiB index inputs
Reference year: Transfer efficiency:

Method