HOME
ANALYSES AND VISUALIZATION
PUBLICATIONS
NEWS AND ABOUT
COLLABORATIONS
CONTACT US
Marine Trophic Index in High seas - Atlantic, Eastern Central
Compute regression
Start year:
1950
1951
1952
1953
1954
1955
1956
1957
1958
1959
1960
1961
1962
1963
1964
1965
1966
1967
1968
1969
1970
1971
1972
1973
1974
1975
1976
1977
1978
1979
1980
1981
1982
1983
1984
1985
1986
1987
1988
1989
1990
1991
1992
1993
1994
1995
1996
1997
1998
1999
2000
2001
2002
2003
2004
2005
End year:
1951
1952
1953
1954
1955
1956
1957
1958
1959
1960
1961
1962
1963
1964
1965
1966
1967
1968
1969
1970
1971
1972
1973
1974
1975
1976
1977
1978
1979
1980
1981
1982
1983
1984
1985
1986
1987
1988
1989
1990
1991
1992
1993
1994
1995
1996
1997
1998
1999
2000
2001
2002
2003
2004
2005
2006
Compute regression
Start year:
1950
1951
1952
1953
1954
1955
1956
1957
1958
1959
1960
1961
1962
1963
1964
1965
1966
1967
1968
1969
1970
1971
1972
1973
1974
1975
1976
1977
1978
1979
1980
1981
1982
1983
1984
1985
1986
1987
1988
1989
1990
1991
1992
1993
1994
1995
1996
1997
1998
1999
2000
2001
2002
2003
2004
2005
End year:
1951
1952
1953
1954
1955
1956
1957
1958
1959
1960
1961
1962
1963
1964
1965
1966
1967
1968
1969
1970
1971
1972
1973
1974
1975
1976
1977
1978
1979
1980
1981
1982
1983
1984
1985
1986
1987
1988
1989
1990
1991
1992
1993
1994
1995
1996
1997
1998
1999
2000
2001
2002
2003
2004
2005
2006
Show/Hide tabular data
Year
Mean trophic level
Mean max. length (cm)
FiB Index
Expansion factor
1950
3.86
137.8
0
1
1951
3.69
112.6
-0.1
0.9
1952
3.48
80.2
0.09
1.09
1953
3.48
80.6
0.72
2.05
1954
3.36
67.5
1.01
2.75
1955
3.43
75.7
1.47
4.35
1956
3.39
75.5
1.37
3.94
1957
3.96
166.6
3.64
38.09
1958
3.97
169.6
3.82
45.6
1959
4.08
182.7
4.6
99.48
1960
4.13
190.9
4.96
142.59
1961
4.15
187.9
5.21
183.09
1962
4.03
161.9
4.71
111.05
1963
4.06
166.6
5.06
157.59
1964
3.97
153.5
4.97
144.03
1965
4.05
163
5.4
221.41
1966
4.06
153.9
5.33
206.44
1967
3.94
137.7
5.2
181.27
1968
4.04
143.7
5.69
295.89
1969
3.99
144.2
5.54
254.68
1970
4.26
173.4
5.78
323.76
1971
4.34
172.9
5.89
361.41
1972
4.34
177.2
5.93
376.15
1973
4.34
180
6.13
459.44
1974
4.34
180.2
6.29
539.15
1975
4.36
195
6.23
507.76
1976
4.36
189.4
6.25
518.01
1977
4.24
160.5
6.56
706.27
1978
4.35
182.1
6.65
772.78
1979
4.35
179.6
6.62
749.95
1980
4.23
162
6.64
765.09
1981
4.34
177.1
6.74
845.56
1982
4.15
146.1
6.68
796.32
1983
4.11
139
6.42
614
1984
4.34
183.8
6.37
584.06
1985
4.35
189.9
6.46
639.06
1986
4.34
181
6.4
601.85
1987
4.33
179.8
6.42
614
1988
4.35
180.5
6.57
713.37
1989
4.36
190.5
6.66
780.55
1990
4.35
190.5
6.7
812.41
1991
4.35
174.2
6.75
854.06
1992
4.36
184.4
6.67
788.4
1993
4.38
190.1
6.85
943.88
1994
4.39
194.2
6.9
992.27
1995
4.39
196.4
6.91
1002.25
1996
4.37
196.8
6.87
962.95
1997
4.34
192.8
6.79
888.91
1998
4.33
183
6.83
925.19
1999
4.35
182.1
6.9
992.27
2000
4.34
184
6.76
862.64
2001
4.33
182.4
6.87
962.95
2002
4.32
184.2
6.58
720.54
2003
4.32
186.6
6.66
780.55
2004
4.34
190.1
6.7
812.41
2005
4.35
176.8
6.75
854.06
2006
4.34
178.8
6.63
757.48
Show/Hide species list
Exclude
TL
SLMax(cm)
Common Name
Scientific Name
4.53000020980835
611
Great white shark
Carcharodon carcharias
4.50750017166138
287
Mackerel sharks and white sharks
Lamnidae
4.5
400
Thresher sharks
Alopias
4.5
121
Plain bonito
Orcynopsis unicolor
4.5
219
Bigeye tuna
Thunnus obesus
4.5
98
Bluefish
Pomatomus saltatrix
4.5
110
Black scabbardfish
Aphanopus carbo
4.5
284
Smooth hammerhead
Sphyrna zygaena
4.5
79
John dory
Zeus faber
4.48999977111816
449
Swordfish
Xiphias gladius
4.48000001907349
246
Atlantic white marlin
Tetrapturus albidus
4.47714281082153
367
Billfishes
Istiophoridae
4.46000003814697
112
Monkfishes
Lophius
4.44999980926514
192
Largehead hairtail
Trichiurus lepturus
4.42999982833862
376
Atlantic bluefin tuna
Thunnus thynnus
4.42000007629395
130
European hake
Merluccius merluccius
4.40333318710327
179
Barracudas
Sphyraena
4.40000009536743
258
Atlantic sailfish
Istiophorus albicans
4.40000009536743
227
Wahoo
Acanthocybium solandri
4.40000009536743
100
Little tunny
Euthynnus alletteratus
4.38000011444092
346
Atlantic blue marlin
Makaira nigricans
4.36999988555908
172
Common dolphinfish
Coryphaena hippurus
4.34999990463257
108
Skipjack tuna
Katsuwonus pelamis
4.34000015258789
54
Frigate tuna
Auxis thazard thazard
4.34000015258789
231
Yellowfin tuna
Thunnus albacares
4.30999994277954
136
Albacore
Thunnus alalunga
4.30999994277954
164
Cobia
Rachycentron canadum
4.28000020980835
248
Longbill spearfish
Tetrapturus pfluegeri
4.28000020980835
392
Shortfin mako
Isurus oxyrinchus
4.2662501335144
125
Hakes
Merluccius
4.2622218132019
150
Mackerels tunas and bonitos
Scombridae
4.24176502227783
207
Requiem sharks
Carcharhinidae
4.23999977111816
226
Blacktip shark
Carcharhinus limbatus
4.23999977111816
289
Blue shark
Prionace glauca
4.2350001335144
60
Frigate tuna
Auxis
4.23199987411499
90
Dogfish sharks
Squalidae
4.21999979019165
131
Leafscale gulper shark
Centrophorus squamosus
4.21333312988281
246
Snake mackerels
Gempylidae
4.21000003814697
400
Bigeye thresher
Alopias superciliosus
4.21000003814697
623
Thintail thresher
Alopias vulpinus
4.19999980926514
90
Atlantic bonito
Sarda sarda
4.19999980926514
238
Silky shark
Carcharhinus falciformis
4.19500017166138
346
Hammerhead sharks
Sphyrna
4.18599987030029
421
Hammerhead and bonnethead and scoophead shark
Sphyrnidae
4.15000009536743
150
Cutlassfishes
Trichiuridae
4.13424253463745
32
Squids
Teuthida
4.07999992370605
82
Atlantic pomfret
Brama brama
4.07882404327393
525
Ground sharks
Carcharhiniformes
4.05230808258057
164
Jacks and pompanos
Carangidae
4.05000019073486
729
Sharks and rays
Elasmobranchii
4.02400016784668
98
Snappers
Lutjanus
4.01000022888184
41
Blue whiting
Micromesistius poutassou
4
300
Sharks rays and skates etc
Sharks or rays and chimaeras
3.99499988555908
90
Gunnels and forkbeards
Phycis
3.99000000953674
25
Common squids
Loligo
3.97000002861023
60
Alfonsinos
Beryx
3.96499991416931
100
Seabreams (Dentex spp)
Dentex
3.96499991416931
49
Megrims
Lepidorhombus
3.94000005722046
100
European/spotted seabass
Dicentrarchus
3.91666698455811
43
Scorpionfishes or rockfishes
Scorpaenidae
3.91417288780212
80
Cods
Gadiformes
3.91000008583069
50
Blue butterfish
Stromateus fiatola
3.89000010490417
143
Eels and morays
Anguilliformes
3.84999990463257
172
Silver scabbardfish
Lepidopus caudatus
3.82999992370605
172
Wreckfish
Polyprion americanus
3.80988097190857
27
Cephalopods
Cephalopoda
3.77125000953674
20
Lefteye flounders
Bothidae
3.72000002861023
57
Slimeheads
Trachichthyidae
3.6949999332428
66
Jack and horse mackerels
Trachurus
3.68666696548462
102
Pompanos
Trachinotus
3.65000009536743
115
Medusafishes
Centrolophidae
3.64000010490417
62
Atlantic horse mackerel
Trachurus trachurus
3.6324999332428
37
Scads
Decapterus
3.61374998092651
205
Skates and rays
Rajiformes
3.59999990463257
28
Cuttlefishes
Sepiidae
3.58999991416931
148
Rainbow runner
Elagatis bipinnulata
3.57999992370605
68
Octopuses
Octopoda
3.57450008392334
25
Flyingfishes
Exocoetidae
3.53143930435181
56
Perch-likes
Perciformes
3.51166701316834
35
Threadfin breams and Whiptail breams
Nemipteridae
3.5
102
Crevalle jack
Caranx hippos
3.49000000953674
80
Rubberlip grunt
Plectorhinchus mediterraneus
3.48000001907349
36
Axillary seabream
Pagellus acarne
3.47000002861023
23
Armored searobins or armored gurnards
Peristediidae
3.47000002861023
16
Longspine snipefish
Macroramphosus scolopax
3.47000002861023
56
Cape horse mackerel
Trachurus capensis
3.44000005722046
70
Pandoras
Pagellus
3.4300000667572
53
Large-eye dentex
Dentex macrophthalmus
3.41000008583069
75
Bearded brotula
Brotula barbata
3.35863590240479
80
Grunts
Haemulidae
3.33999991416931
60
Black seabream
Spondyliosoma cantharus
3.3199999332428
49
Blue jack mackerel
Trachurus picturatus
3.30999994277954
4
Deepwater rose shrimp
Parapenaeus longirostris
3.30864906311035
164
Porgies
Sparidae
3.28999996185303
30
Tonguefishes
Cynoglossidae
3.28500008583069
40
Western goatfishes
Mullus
3.24000000953674
25
Herrings
Clupeiformes
3.22000002861023
87
Remoras
Echeneidae
3.21000003814697
25
Round sardinella
Sardinella aurita
3.20000004768372
729
Basking shark
Cetorhinus maximus
3.1589469909668
28
Herrings and shads and sardines and menhadens
Clupeidae
3.15166711807251
25
Soles
Soleidae
3.08999991416931
52
Chub mackerel
Scomber japonicus
2.76699995994568
21
Sardinella
Sardinella
2.65000009536743
13
Natantian decapods
Shrimps and prawns
2.59999990463257
44
Lobsters and spiny-rock lobsters
Homaridae and Palinuridae
2.59999990463257
30
Marine crabs
Brachyura
2.59999990463257
18
Deepsea crabs
Geryon
2.27900004386902
45
Surgeonfishes and tangs and unicornfishes
Acanthuridae
2.26999998092651
15
Clams cockles and arkshells
Clams or cockles and arkshells
FiB index inputs
Reference year:
1950
1951
1952
1953
1954
1955
1956
1957
1958
1959
1960
1961
1962
1963
1964
1965
1966
1967
1968
1969
1970
1971
1972
1973
1974
1975
1976
1977
1978
1979
1980
1981
1982
1983
1984
1985
1986
1987
1988
1989
1990
1991
1992
1993
1994
1995
1996
1997
1998
1999
2000
2001
2002
2003
2004
2005
2006
Transfer efficiency:
Method
Feedback