Marine Trophic Index in LME: Gulf of Alaska

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Year	Mean trophic level	Mean max. length (cm)	FiB Index	Expansion factor
1950	3.46	54.4	0	1
1951	3.52	56.2	0.16	1.17
1952	3.58	60.4	0.04	1.04
1953	3.54	58.8	0.09	1.09
1954	3.52	61.1	0.05	1.05
1955	3.6	60.6	0.08	1.08
1956	3.5	56.9	-0.04	0.96
1957	3.58	62.5	0.07	1.07
1958	3.55	61.2	0.17	1.19
1959	3.49	58.8	0.06	1.06
1960	3.53	61.7	0.1	1.11
1961	3.51	56.2	0.32	1.38
1962	3.54	56.5	0.57	1.77
1963	3.49	54.2	0.57	1.77
1964	3.5	55.3	0.79	2.2
1965	3.48	52.9	0.6	1.82
1966	3.57	54.3	0.6	1.82
1967	3.58	59.1	0.55	1.73
1968	3.57	62.7	0.48	1.62
1969	3.55	62.8	0.52	1.68
1970	3.54	65.1	0.96	2.61
1971	3.57	65.5	0.87	2.39
1972	3.51	66.9	0.92	2.51
1973	3.49	61	0.4	1.49
1974	3.54	67.1	0.8	2.23
1975	3.54	67.5	0.78	2.18
1976	3.53	66.4	0.87	2.39
1977	3.46	55.9	-0.05	0.95
1978	3.47	64.2	0.71	2.03
1979	3.52	67.3	1.01	2.75
1980	3.52	68.6	1.05	2.86
1981	3.55	69.6	1.39	4.01
1982	3.59	68.8	1.12	3.06
1983	3.61	69.6	1.36	3.9
1984	3.59	70.5	1.41	4.1
1985	3.58	68.1	1.46	4.31
1986	3.59	69.5	1.62	5.05
1987	3.61	69.1	1.72	5.58
1988	3.61	67.1	1.71	5.53
1989	3.62	68.3	1.83	6.23
1990	3.62	68	1.8	6.05
1991	3.62	68.1	1.65	5.21
1992	3.59	66.8	1.57	4.81
1993	3.57	68.1	1.51	4.53
1994	3.65	69.4	1.48	4.39
1995	3.64	69.9	1.36	3.9
1996	3.66	69.8	1.37	3.94
1997	3.64	69.2	1.36	3.9
1998	3.62	69.4	1.31	3.71
1999	3.66	69.3	1.31	3.71
2000	3.61	70.3	1.12	3.06
2001	3.62	70.4	1.29	3.63
2002	3.59	70.4	1.22	3.39
2003	3.61	71.4	1.32	3.74
2004	3.65	71.8	1.48	4.39
2005	3.66	70.9	1.52	4.57
2006	3.62	71.1	1.37	3.94

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TL	SLMax(cm)	Common Name	Scientific Name
4.5	219	Bigeye tuna	Thunnus obesus
4.48000001907349	66	Greenland halibut	Reinhardtius hippoglossoides
4.44999980926514	100	Kamchatka flounder	Atheresthes evermanni
4.40000009536743	121	Chinook salmon	Oncorhynchus tshawytscha
4.38500022888184	164	Amberjacks	Seriola
4.34999990463257	75	North Pacific hake	Merluccius productus
4.34000015258789	231	Yellowfin tuna	Thunnus albacares
4.32000017166138	125	Lingcod	Ophiodon elongatus
4.30999994277954	136	Albacore	Thunnus alalunga
4.30000019073486	130	Piked dogfish	Squalus acanthias
4.28000020980835	392	Shortfin mako	Isurus oxyrinchus
4.2622218132019	150	Mackerels tunas and bonitos	Scombridae
4.26000022888184	69	Arrowtooth flounder	Atheresthes stomias
4.25	88	Coho salmon	Oncorhynchus kisutch
4.23999977111816	289	Blue shark	Prionace glauca
4.23199987411499	90	Dogfish sharks	Squalidae
4.21000003814697	623	Thintail thresher	Alopias vulpinus
4.21000003814697	135	Tope shark	Galeorhinus galeus
4.21000003814697	300	Pacific bluefin tuna	Thunnus orientalis
4.19999980926514	63	Black rockfish	Sebastes melanops
4.19999980926514	50	Neon flying squid	Ommastrephes bartramii
4.19000005722046	62	Pink salmon	Oncorhynchus gorbuscha
4.13424253463745	32	Squids	Teuthida
4.13000011444092	115	Pacific halibut	Hippoglossus stenolepis
4.11999988555908	45	Saffron cod	Eleginus gracilis
4.1100001335144	54	Yellowtail rockfish	Sebastes flavidus
4.05999994277954	63	West American sand sole	Psettichthys melanostictus
4.05000019073486	70	Petrale sole	Eopsetta jordani
4.01000022888184	100	Pacific cod	Gadus macrocephalus
4	300	Sharks rays and skates etc	Sharks or rays and chimaeras
3.95000004768372	121	Pacific salmon	Oncorhynchus
3.91666698455811	43	Scorpionfishes or rockfishes	Scorpaenidae
3.88000011444092	29	California market squid	Loligo opalescens
3.87538504600525	82	Grenadiers or rattails	Macrouridae
3.84999990463257	40	Curlfin sole	Pleuronichthys decurrens
3.82999992370605	98	Sablefish	Anoplopoma fimbria
3.81333303451538	50	Sculpins	Cottidae
3.79999995231628	63	Canary rockfish	Sebastes pinniger
3.79384589195251	87	Redfishes	Sebastes
3.73000001907349	76	Sockeye salmon	Oncorhynchus nerka
3.71000003814697	30	Pacific saury	Cololabis saira
3.6800000667572	49	Widow rockfish	Sebastes entomelas
3.64000010490417	50	Flathead sole	Hippoglossoides elassodon
3.61374998092651	205	Skates and rays	Rajiformes
3.60999989509583	80	Shortspine thornyhead	Sebastolobus alascanus
3.57999992370605	68	Octopuses	Octopoda
3.57999992370605	60	Okhostk atka mackerel	Pleurogrammus azonus
3.57999992370605	31	Pacific tomcod	Microgadus proximus
3.57999992370605	46	Chilipepper	Sebastes goodei
3.57180309295654	50	Flatfishes	Pleuronectiformes
3.55999994277954	66	Pacific jack mackerel	Trachurus symmetricus
3.53143930435181	56	Perch-likes	Perciformes
3.50999999046326	91	Bocaccio	Sebastes paucispinis
3.50999999046326	99	Cabezon	Scorpaenichthys marmoratus
3.5	42	Pacific ocean perch	Sebastes alutus
3.47000002861023	91	Chum salmon	Oncorhynchus keta
3.47000002861023	25	Surf smelt	Hypomesus pretiosus
3.46499991416931	32	Smelts	Osmeridae
3.45000004768372	80	Hagfishes	Myxinidae
3.45000004768372	75	Alaska Pollock	Theragra chalcogramma
3.45000004768372	41	Pacific sanddab	Citharichthys sordidus
3.45000004768372	49	English sole	Parophrys vetulus
3.4300000667572	34	White croaker	Genyonemus lineatus
3.39000010490417	108	Rainbow trout	Oncorhynchus mykiss
3.35863590240479	80	Grunts	Haemulidae
3.32999992370605	48	Atka mackerel	Pleurogrammus monopterygius
3.3199999332428	75	Starry flounder	Platichthys stellatus
3.29999995231628	140	Salmonids	Salmonidae
3.29999995231628	25	Eelpouts	Lycodes
3.29999995231628	20	Pacific rock crab	Cancer productus
3.27999997138977	150	Stingrays	Dasyatis
3.26999998092651	62	Dover sole	Microstomus pacificus
3.24000000953674	25	Eulachon	Thaleichthys pacificus
3.24000000953674	39	Yellowfin sole	Limanda aspera
3.24000000953674	60	Rex sole	Glyptocephalus zachirus
3.24000000953674	3	Ocean shrimp	Pandalus jordani
3.21000003814697	49	Rock sole	Lepidopsetta bilineata
3.19000005722046	62	American shad	Alosa sapidissima
3.15000009536743	16	Capelin	Mallotus villosus
3.15000009536743	31	Pacific herring	Clupea pallasii pallasii
3.09999990463257	60	Alaska plaice	Pleuronectes quadrituberculatus
3.08999991416931	52	Chub mackerel	Scomber japonicus
3.06162858009338	11	Gastropods	Gastropoda
3	25	Crustaceans	Crustacea
2.96000003814697	19	Californian anchovy	Engraulis mordax
2.8199999332428	14	King crabs	Paralithodes
2.8199999332428	20	Spiny king crab	Paralithodes brevipes
2.8199999332428	40	Red king crab	Paralithodes camtschaticus
2.65000009536743	13	Natantian decapods	Shrimps and prawns
2.59999990463257	30	Marine crabs	Brachyura
2.59999990463257	16	Pandalus shrimps	Pandalus
2.59999990463257	21	Dungeness crab	Cancer magister
2.59999990463257	15	Hair Crab	Erimacrus isenbeckii
2.59999990463257	10	Humpy shrimp	Pandalus goniurus
2.5699999332428	15	Blue mud shrimp	Upogebia pugettensis
2.4300000667572	30	South American pilchard	Sardinops sagax
2.29999995231628	20	Pacific snow crabs	Chionoecetes
2.26999998092651	15	Clams cockles and arkshells	Clams or cockles and arkshells
2.20000004768372	4	Ghost shimps	Callianassa
2.20000004768372	9	Sculptured shrimps	Sclerocrangon
2.09999990463257	8	Sea urchins	Strongylocentrotus
2.09999990463257	6	Pacific littleneck clam	Protothaca staminea
2.04999995231628	10	Nuttall cockle	Clinocardium nuttallii
2.02999997138977	22	Gaper clams	Tresus
2	46	Sea cucumbers	Holothuroidea
2	10	Sea mussels	Mytilidae
2	25	Cupped oysters	Crassostrea
2	30	Abalones	Haliotis
2	17	Surf clam	Spisula
2	10	Butter clam	Saxidomus gigantea
2	6	Olympia flat oyster	Ostrea lurida
2	12	Pacific cupped oyster	Crassostrea gigas
2	23	Pacific geoduck	Panopea abrupta
2	14	Pacific razor clam	Siliqua patula
2	7	Sand gaper	Mya arenaria
2	13	Weathervane scallop	Patinopecten caurinus

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