HOME
ANALYSES AND VISUALIZATION
PUBLICATIONS
NEWS AND ABOUT
COLLABORATIONS
CONTACT US
Marine Trophic Index in LME: Agulhas Current
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
2.88
59
0
1
1951
2.87
54.7
0.28
1.32
1952
2.72
46.8
0.23
1.26
1953
2.7
46.5
0.07
1.07
1954
2.75
50
-0.06
0.94
1955
2.79
55.6
0.05
1.05
1956
2.84
59.1
0.09
1.09
1957
2.77
52.4
-0.09
0.91
1958
2.73
50.3
0
1
1959
2.66
45.4
0.01
1.01
1960
2.67
45.8
0.15
1.16
1961
2.67
45.5
0.38
1.46
1962
2.67
45
0.43
1.54
1963
2.64
40.6
0.53
1.7
1964
2.92
52.3
0.8
2.23
1965
3.06
55.9
1.44
4.22
1966
3.18
66
1.81
6.11
1967
3.12
54
1.93
6.89
1968
3.12
55
2.11
8.25
1969
3.12
50.1
2.08
8
1970
3.26
55.8
2.26
9.58
1971
3.32
57.5
2.39
10.91
1972
3.39
63.4
2.67
14.44
1973
3.27
51.9
2.56
12.94
1974
3.23
49.8
2.49
12.06
1975
3.78
89.2
2.31
10.07
1976
3.71
86.3
1.99
7.32
1977
3.68
90.4
1.69
5.42
1978
3.68
88.5
1.46
4.31
1979
3.69
90.8
1.65
5.21
1980
3.62
90.2
1.53
4.62
1981
3.53
81.4
1.26
3.53
1982
3.63
91.1
1.42
4.14
1983
3.62
88.9
1.32
3.74
1984
3.68
95.1
1.44
4.22
1985
3.77
100.2
1.86
6.42
1986
3.74
102.4
1.95
7.03
1987
3.71
101.9
1.98
7.24
1988
3.72
105.4
2.1
8.17
1989
3.75
104.2
2.26
9.58
1990
3.72
108.5
2.3
9.97
1991
3.73
110.3
2.24
9.39
1992
3.77
111.4
2.29
9.87
1993
3.77
117.5
2.18
8.85
1994
3.76
113.3
2.12
8.33
1995
3.79
118.2
2.2
9.03
1996
3.81
116.2
2.3
9.97
1997
3.78
118.4
2.25
9.49
1998
3.81
119.2
2.28
9.78
1999
3.84
119.7
2.4
11.02
2000
3.78
115.3
2.27
9.68
2001
3.78
119.9
2.34
10.38
2002
3.69
110.5
2.25
9.49
2003
3.51
104.1
2.11
8.25
2004
3.46
95.9
2.1
8.17
2005
3.21
81.8
1.77
5.87
2006
3.25
83.2
1.67
5.31
Show/Hide species list
Exclude
TL
SLMax(cm)
Common Name
Scientific Name
4.57999992370605
287
Striped marlin
Tetrapturus audax
4.5
279
Indo-Pacific sailfish
Istiophorus platypterus
4.5
275
Dogtooth tuna
Gymnosarda unicolor
4.5
205
Narrow-barred Spanish mackerel
Scomberomorus commerson
4.5
219
Bigeye tuna
Thunnus obesus
4.5
98
Bluefish
Pomatomus saltatrix
4.5
164
Red steenbras
Petrus rupestris
4.5
79
John dory
Zeus faber
4.5
189
Shortbill spearfish
Tetrapturus angustirostris
4.48999977111816
449
Swordfish
Xiphias gladius
4.48999977111816
307
Dusky shark
Carcharhinus obscurus
4.48000001907349
50
Brushtooth lizardfish
Saurida undosquamis
4.47714281082153
367
Billfishes
Istiophoridae
4.46999979019165
93
Kawakawa
Euthynnus affinis
4.46000003814697
150
Goosefishes
Lophiidae
4.46000003814697
367
Black marlin
Makaira indica
4.46000003814697
410
Indo-Pacific blue marlin
Makaira mazara
4.46000003814697
82
Cape monk
Lophius vomerinus
4.44999980926514
192
Largehead hairtail
Trichiurus lepturus
4.40999984741211
148
Kingklip
Genypterus capensis
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
4.40000009536743
56
Greater lizardfish
Saurida tumbil
4.38500022888184
164
Amberjacks
Seriola
4.38000011444092
346
Atlantic blue marlin
Makaira nigricans
4.36999988555908
172
Common dolphinfish
Coryphaena hippurus
4.34999990463257
108
Skipjack tuna
Katsuwonus pelamis
4.34749984741211
205
Seerfishes
Scomberomorus
4.34000015258789
231
Yellowfin tuna
Thunnus albacares
4.30999994277954
136
Albacore
Thunnus alalunga
4.30999994277954
164
Cobia
Rachycentron canadum
4.29699993133545
56
Lizardfishes
Synodontidae
4.29500007629395
100
Wolf herring
Chirocentrus
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
289
Blue shark
Prionace glauca
4.2350001335144
60
Frigate tuna
Auxis
4.21333312988281
246
Snake mackerels
Gempylidae
4.21000003814697
277
Porbeagle
Lamna nasus
4.21000003814697
623
Thintail thresher
Alopias vulpinus
4.21000003814697
135
Tope shark
Galeorhinus galeus
4.21000003814697
62
Cape gurnard
Chelidonichthys capensis
4.19999980926514
90
Atlantic bonito
Sarda sarda
4.19999980926514
238
Silky shark
Carcharhinus falciformis
4.18599987030029
421
Hammerhead and bonnethead and scoophead shark
Sphyrnidae
4.17999982833862
95
Striped bonito
Sarda orientalis
4.15000009536743
150
Cutlassfishes
Trichiuridae
4.13424253463745
32
Squids
Teuthida
4.13000011444092
123
Gulper shark
Centrophorus granulosus
4.09999990463257
78
European squid
Loligo vulgaris
4.07999992370605
82
Atlantic pomfret
Brama brama
4.07999992370605
246
Oilfish
Ruvettus pretiosus
4.07000017166138
164
Yellowtail amberjack
Seriola lalandi
4.05230808258057
164
Jacks and pompanos
Carangidae
4.03000020980835
49
Mud sole
Austroglossus pectoralis
4.02400016784668
98
Snappers
Lutjanus
4.01749992370605
98
Snappers
Lutjanidae
4
300
Sharks rays and skates etc
Sharks or rays and chimaeras
4
15
Bonnetmouths
Inermiidae
3.99000000953674
180
Conger eels
Muraenesox
3.99000000953674
25
Common squids
Loligo
3.98279094696045
190
Sea basses or groupers and fairy basslets
Serranidae
3.98000001907349
57
Orange roughy
Hoplostethus atlanticus
3.97000002861023
60
Alfonsinos
Beryx
3.97000002861023
20
Andaman lobster
Metanephrops andamanicus
3.96499991416931
100
Seabreams (Dentex spp)
Dentex
3.91666698455811
43
Scorpionfishes or rockfishes
Scorpaenidae
3.91417288780212
80
Cods
Gadiformes
3.89000010490417
107
Geelbeck croaker
Atractoscion aequidens
3.86999988555908
228
Southern bluefin tuna
Thunnus maccoyii
3.84999990463257
172
Silver scabbardfish
Lepidopus caudatus
3.84349989891052
190
Groupers
Epinephelus
3.82999992370605
172
Wreckfish
Polyprion americanus
3.8199999332428
170
Southern meagre
Argyrosomus hololepidotus
3.80999994277954
39
Blackbelly rosefish
Helicolenus dactylopterus
3.80988097190857
27
Cephalopods
Cephalopoda
3.78999996185303
100
Croakers
Pseudotolithus
3.76205897331238
200
Drums or croakers
Sciaenidae
3.75500011444092
62
Southern soles
Austroglossus
3.74000000953674
200
Snoek
Thyrsites atun
3.72562503814697
111
Smooth-hounds
Mustelus
3.72000002861023
29
Threadfin breams
Nemipterus
3.6949999332428
66
Jack and horse mackerels
Trachurus
3.69000005722046
40
Oreos
Oreosomatidae
3.6800000667572
33
Panga seabream
Pterogymnus laniarius
3.65000009536743
115
Medusafishes
Centrolophidae
3.64000010490417
62
Black pomfret
Parastromateus niger
3.6324999332428
37
Scads
Decapterus
3.6175000667572
50
Butterfishes
Stromateidae
3.61374998092651
205
Skates and rays
Rajiformes
3.60999989509583
33
Redbait
Emmelichthys nitidus nitidus
3.59999990463257
28
Cuttlefishes
Sepiidae
3.59999990463257
74
Tiger-toothed croaker
Otolithes ruber
3.58999991416931
81
Seabreams
Chrysoblephus
3.58999991416931
148
Rainbow runner
Elagatis bipinnulata
3.58588194847107
70
Emperors or scavengers
Lethrinidae
3.57999992370605
68
Octopuses
Octopoda
3.57180309295654
50
Flatfishes
Pleuronectiformes
3.54749989509583
100
Seabreams (Pagrus spp)
Pagrus
3.53143930435181
56
Perch-likes
Perciformes
3.51166701316834
35
Threadfin breams and Whiptail breams
Nemipteridae
3.5
20
Cardinalfishes
Epigonus
3.49000000953674
25
Round herring
Etrumeus teres
3.48000001907349
62
West coast sole
Austroglossus microlepis
3.47857093811035
62
Sea catfishes
Ariidae
3.47000002861023
23
Armored searobins or armored gurnards
Peristediidae
3.47000002861023
56
Cape horse mackerel
Trachurus capensis
3.45967698097229
75
Wrasses
Labridae
3.45749998092651
55
Goatfishes
Mullidae
3.45000004768372
61
Cape elephantfish
Callorhinchus capensis
3.44000005722046
70
Pandoras
Pagellus
3.40000009536743
20
Whiteheads round herring
Etrumeus whiteheadi
3.35863590240479
80
Grunts
Haemulidae
3.30864906311035
164
Porgies
Sparidae
3.29999995231628
16
Lanternfishes
Myctophidae
3.28999996185303
30
Tonguefishes
Cynoglossidae
3.25250005722046
53
Triggerfishes
Balistidae
3.25142908096313
21
Anchovies
Engraulidae
3.24000000953674
25
Herrings
Clupeiformes
3.21000003814697
25
Round sardinella
Sardinella aurita
3.20333337783813
100
Steenbras
Lithognathus
3.19000005722046
32
Indian mackerel
Rastrelliger kanagurta
3.17000007629395
7
Hectors lanternfish
Lampanyctodes hectoris
3.14000010490417
40
Spiny lobsters
Palinuridae
3.10333323478699
33
Indo-Pacific mackerels
Rastrelliger
3.08999991416931
52
Chub mackerel
Scomber japonicus
3.04999995231628
74
Carpenter seabream
Argyrozona argyrozona
3.04500007629395
45
Halfbeaks
Hemiramphus
3
25
Crustaceans
Crustacea
3
35
Japanese splitfin
Synagrops japonicus
2.97199988365173
49
Seabreams and porgies
Diplodus
2.96000003814697
19
Cape anchovy
Engraulis capensis
2.8733332157135
20
Slipper lobsters
Scyllaridae
2.86999988555908
53
White stumpnose
Rhabdosargus globiceps
2.76699995994568
21
Sardinella
Sardinella
2.70000004768372
34
Penaeus shrimps
Penaeus
2.70000004768372
12
Indian white prawn
Fenneropenaeus indicus
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
2.59999990463257
40
Tropical spiny lobsters
Panulirus
2.59999990463257
18
Knife shrimps
Haliporoides
2.59999990463257
46
Cape rock lobster
Jasus lalandii
2.59999990463257
20
Mozambique lobster
Metanephrops mozambicus
2.59999990463257
13
Natal spiny lobster
Palinurus delagoae
2.59999990463257
10
Southern spiny lobster
Palinurus gilchristi
2.52500009536743
120
Mullets
Mugilidae
2.4300000667572
30
South American pilchard
Sardinops sagax
2.26999998092651
15
Clams cockles and arkshells
Clams or cockles and arkshells
2.20000004768372
13
Jack-knife shrimp
Haliporoides sibogae
2.20000004768372
15
Knife shrimp
Haliporoides triarthrus
2.11142897605896
34
Rabbitfishes
Siganus
2.00999999046326
42
Salema
Sarpa salpa
2
46
Sea cucumbers
Holothuroidea
2
25
Cupped oysters
Crassostrea
2
4
Donax clams
Donax
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