Annexe II
Tableau 9 - Calcul des fréquences (Fr), densités (Dn), biomasses (Dw) et de l’indice de diversité (H) des espèces
associées à D, vulgaris dans le secteur Est (données Ichthys-Joamy, 1982)
N°
Genre
Espèce
qi
wi (kg) SP+ Fr (%)
Dn
Dw
qi/Q
X
wi/W
Y
1
Boops
boops
5
0.77
3
30
245.69
37.84
0.013
-0.082
0.003
-0.028
2 Centracanthus
cirrus
1
0.03
1
10
49.14
1.47
0.003
-0.023
0.000
-0.002
3
Dentex
gibbosus
3
1.56
3
30
147.42
76.66
0.008
-0.055
0.007
-0.050
4
Dentex
maroccanus
9
1.62
1
10
442.25 79.60425 0.024
-0.1279 0.0072 -0.05123
5
Epinephelus
caninus
1
4.6
1
10
49.14
226.037
0.003
-0.0226 0.020
-0.115
6
Galeorhinus
galeus
4
45.5
1
10
196.55 2235.798 0.011
-0.0692 0.202
-0.466
7
Illex
spp
3
2.6
2
20
147.42
127.76
0.008
-0.055
0.012
-0.074
8
Merluccius
merluccius
26
12.505
7
70
1277.60 614.48
0.068
-0.265
0.056
-0.232
9
Mullus
surmuletus
5
1.77
4
40
245.69
86.98
0.013
-0.082
0.008
-0.055
10
Mustelus
mustelus
2
11.5
2
20
98.28
565.09
0.005
-0.040
0.051
-0.219
11
Pagellus
acarne
20
4.79
4
40
982.77
235.37
0.053
-0.224
0.021
-0.118
12
Pagellus
bogarave
9
0.98
4
40
442.25
48.16
0.024
-0.128
0.004
-0.034
13
Pagellus
erythrinus
27
6.64
8
80
1326.74 326.28
0.071
-0.271
0.029
-0.150
14
Palinurus
elephas
25
19.29
6
60
1228.46 947.88
0.066
-0.258
0.086
-0.304
15
Phycis
phycis
34
16.575
9
90
1670.71 814.47
0.089
-0.312
0.074
-0.277
16
Raja
miraletus
1
0.3
1
10
49.14
14.74
0.003
-0.023
0.001
-0.013
17
Sardina
pilchardus
1
0.05
1
10
49.14
2.46
0.003
-0.023
0.000
-0.003
18
Sciaena
umbra
2
1.03
1
10
98.28
50.61
0.005
-0.040
0.005
-0.036
19
Scorpaena
elongata
12
6.4
3
30
589.66
314.49
0.032
-0.157
0.028
-0.146
20
Scorpaena
scrofa
19
10.97
6
60
933.63
539.05
0.050
-0.216
0.049
-0.212
21
Scyliorhinus
canicula
11
4.58
4
40
540.52
225.05
0.029
-0.148
0.020
-0.114
22
Scyliorhinus
stellaris
2
1.5
2
20
98.28
73.71
0.005
-0.040
0.007
-0.048
23
Sparus
pagrus
9
1.91
5
50
442.25
93.85
0.024
-0.128
0.008
-0.058
24 Spondyliosoma cantharus
9
2.07
3
30
442.25
101.72
0.024
-0.128
0.009
-0.062
25
Squalus
acanthias
1
0.54
1
10
49.14
26.53
0.003
-0.023
0.002
-0.021
26
Squalus
blainvillei
3
5.3
1
10
147.42
260.43
0.008
-0.055
0.024
-0.127
27
Squatina
oculata
2
19.3
1
10
98.28
948.37
0.005
-0.040
0.086
-0.304
28
Squatina
squatina
1
11.4
1
10
49.14
560.18
0.003
-0.023
0.051
-0.218
29
Trachurus
trachurus
52
5.63
6
60
2555.20 276.65
0.137
-0.393
0.025
-0.133
30
Umbrina
canariensis
77
19.31
6
60
3783.66 948.86
0.203
-0.467
0.086
-0.304
31
Zeus
faber
4
4.1
3
30
196.55
201.47
0.011
-0.069
0.018
-0.105
380
225.12
-3.98
-4.08
H = 3.98
H = 4.08
∑ S+ = 10
qi : abondance spécifique
x = qi/Q*(Log 2 (qi/Q))
SS+= 0,020 km²
wi : poids spécifique
Y = (wi/W)*(Log 2 (wi/W))
Q = Σ qi ; W = ∑ wi
Tableau 9 - Calcul des fréquences (Fr), densités (Dn), biomasses (Dw) et de l’indice de diversité (H) des espèces
associées à D, vulgaris dans le secteur Est (données Ichthys-Joamy, 1982)
N°
Genre
Espèce
qi
wi (kg) SP+ Fr (%)
Dn
Dw
qi/Q
X
wi/W
Y
1
Boops
boops
5
0.77
3
30
245.69
37.84
0.013
-0.082
0.003
-0.028
2 Centracanthus
cirrus
1
0.03
1
10
49.14
1.47
0.003
-0.023
0.000
-0.002
3
Dentex
gibbosus
3
1.56
3
30
147.42
76.66
0.008
-0.055
0.007
-0.050
4
Dentex
maroccanus
9
1.62
1
10
442.25 79.60425 0.024
-0.1279 0.0072 -0.05123
5
Epinephelus
caninus
1
4.6
1
10
49.14
226.037
0.003
-0.0226 0.020
-0.115
6
Galeorhinus
galeus
4
45.5
1
10
196.55 2235.798 0.011
-0.0692 0.202
-0.466
7
Illex
spp
3
2.6
2
20
147.42
127.76
0.008
-0.055
0.012
-0.074
8
Merluccius
merluccius
26
12.505
7
70
1277.60 614.48
0.068
-0.265
0.056
-0.232
9
Mullus
surmuletus
5
1.77
4
40
245.69
86.98
0.013
-0.082
0.008
-0.055
10
Mustelus
mustelus
2
11.5
2
20
98.28
565.09
0.005
-0.040
0.051
-0.219
11
Pagellus
acarne
20
4.79
4
40
982.77
235.37
0.053
-0.224
0.021
-0.118
12
Pagellus
bogarave
9
0.98
4
40
442.25
48.16
0.024
-0.128
0.004
-0.034
13
Pagellus
erythrinus
27
6.64
8
80
1326.74 326.28
0.071
-0.271
0.029
-0.150
14
Palinurus
elephas
25
19.29
6
60
1228.46 947.88
0.066
-0.258
0.086
-0.304
15
Phycis
phycis
34
16.575
9
90
1670.71 814.47
0.089
-0.312
0.074
-0.277
16
Raja
miraletus
1
0.3
1
10
49.14
14.74
0.003
-0.023
0.001
-0.013
17
Sardina
pilchardus
1
0.05
1
10
49.14
2.46
0.003
-0.023
0.000
-0.003
18
Sciaena
umbra
2
1.03
1
10
98.28
50.61
0.005
-0.040
0.005
-0.036
19
Scorpaena
elongata
12
6.4
3
30
589.66
314.49
0.032
-0.157
0.028
-0.146
20
Scorpaena
scrofa
19
10.97
6
60
933.63
539.05
0.050
-0.216
0.049
-0.212
21
Scyliorhinus
canicula
11
4.58
4
40
540.52
225.05
0.029
-0.148
0.020
-0.114
22
Scyliorhinus
stellaris
2
1.5
2
20
98.28
73.71
0.005
-0.040
0.007
-0.048
23
Sparus
pagrus
9
1.91
5
50
442.25
93.85
0.024
-0.128
0.008
-0.058
24 Spondyliosoma cantharus
9
2.07
3
30
442.25
101.72
0.024
-0.128
0.009
-0.062
25
Squalus
acanthias
1
0.54
1
10
49.14
26.53
0.003
-0.023
0.002
-0.021
26
Squalus
blainvillei
3
5.3
1
10
147.42
260.43
0.008
-0.055
0.024
-0.127
27
Squatina
oculata
2
19.3
1
10
98.28
948.37
0.005
-0.040
0.086
-0.304
28
Squatina
squatina
1
11.4
1
10
49.14
560.18
0.003
-0.023
0.051
-0.218
29
Trachurus
trachurus
52
5.63
6
60
2555.20 276.65
0.137
-0.393
0.025
-0.133
30
Umbrina
canariensis
77
19.31
6
60
3783.66 948.86
0.203
-0.467
0.086
-0.304
31
Zeus
faber
4
4.1
3
30
196.55
201.47
0.011
-0.069
0.018
-0.105
380
225.12
-3.98
-4.08
H = 3.98
H = 4.08
∑ S+ = 10
qi : abondance spécifique
x = qi/Q*(Log 2 (qi/Q))
SS+= 0,020 km²
wi : poids spécifique
Y = (wi/W)*(Log 2 (wi/W))
Q = Σ qi ; W = ∑ wi