Marine Trophic Index in LME: Chukchi Sea

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Compute regression

Start year: End year:

Year	Mean trophic level	Mean max. length (cm)	FiB Index	Expansion factor
1950	3.59	96.4	0	1
1951	3.58	93.5	-0.02	0.98
1952	3.58	93.6	-0.01	0.99
1953	3.59	93.7	0.01	1.01
1954	3.58	93.8	-0.01	0.99
1955	3.58	93.9	0	1
1956	3.58	94.1	0	1
1957	3.58	94	0	1
1958	3.58	94.3	-0.02	0.98
1959	3.58	94.4	-0.04	0.96
1960	3.59	94.6	-0.02	0.98
1961	3.57	94.5	-0.01	0.99
1962	3.57	93.5	0.21	1.23
1963	3.57	96.7	-0.25	0.78
1964	3.59	95.1	-0.04	0.96
1965	3.58	96.4	-0.22	0.8
1966	3.59	96.4	-0.18	0.84
1967	3.59	97.3	-0.21	0.81
1968	3.63	97.6	-0.24	0.79
1969	3.68	97.2	-0.09	0.91
1970	3.55	97	0	1
1971	3.55	98	-0.13	0.88
1972	3.59	96.4	0.12	1.13
1973	3.53	94.1	0.47	1.6
1974	3.51	93.3	0.79	2.2
1975	3.52	93.8	0.72	2.05
1976	3.57	97.1	0.04	1.04
1977	3.55	96.2	0.15	1.16
1978	3.58	98.4	-0.1	0.9
1979	3.57	98	-0.05	0.95
1980	3.53	94.9	0.42	1.52
1981	3.5	93.2	0.87	2.39
1982	3.53	94	0.63	1.88
1983	3.55	96.7	0.09	1.09
1984	3.53	95.2	0.32	1.38
1985	3.51	93.7	0.64	1.9
1986	3.53	95.4	0.24	1.27
1987	3.62	98.4	0.11	1.12
1988	3.56	95.3	0.57	1.77
1989	3.58	95.4	0.44	1.55
1990	3.6	96.7	0.29	1.34
1991	3.62	96.5	0.53	1.7
1992	3.58	95.1	0.5	1.65
1993	3.65	97.6	0.15	1.16
1994	3.61	97.4	0.23	1.26
1995	3.58	95.2	0.53	1.7
1996	3.64	97.2	0.21	1.23
1997	3.62	97.1	0.24	1.27
1998	3.67	100	0.06	1.06
1999	3.62	96.9	0.33	1.39
2000	3.61	97.4	0.31	1.36
2001	3.59	97.4	0.33	1.39
2002	3.71	102.4	-0.01	0.99
2003	3.7	101.5	0.04	1.04
2004	3.69	100.2	0.14	1.15
2005	3.66	100.1	0.13	1.14
2006	3.63	98.5	0.24	1.27

TL	SLMax(cm)	Common Name	Scientific Name
4.40000009536743	121	Chinook salmon	Oncorhynchus tshawytscha
4.25	88	Coho salmon	Oncorhynchus kisutch
4.23000001907349	75	Dolly varden	Salvelinus malma malma
4.19000005722046	62	Pink salmon	Oncorhynchus gorbuscha
4.15000009536743	123	Inconnu	Stenodus leucichthys
4.11999988555908	45	Saffron cod	Eleginus gracilis
3.95000004768372	121	Pacific salmon	Oncorhynchus
3.78999996185303	44	Bering cisco	Coregonus laurettae
3.73000001907349	76	Sockeye salmon	Oncorhynchus nerka
3.69000005722046	51	Fourhorn sculpin	Triglopsis quadricornis
3.5699999332428	52	Arctic cisco	Coregonus autumnalis
3.47000002861023	91	Chum salmon	Oncorhynchus keta
3.46499991416931	32	Smelts	Osmeridae
3.29999995231628	140	Salmonids	Salmonidae
3.27999997138977	58	Broad whitefish	Coregonus nasus
3.24000000953674	39	Sardine cisco	Coregonus sardinella
3.15000009536743	31	Pacific herring	Clupea pallasii pallasii
3.09999990463257	33	Polar cod	Boreogadus saida
2.8199999332428	14	King crabs	Paralithodes

FiB index inputs
Reference year: Transfer efficiency:

Method