138
G. Brancato et al.
morning
150 75 0
75 150
o "--~----r--250
m
750
1000
1250
1500
1750
2000
0
250
500
750
1000
1250
1500
1750
2000
50 25
0
25 50
100 50 0
50 100
o t-~.,....;~-250
500
750
1000
1250
1500
1750
2000
o
250
500
750
1000
1250
1500
1750
2000
100 50 0 50 100
Euphausia hemigibba
midday
150 75 0
75 150
afternoon-evening
150 75 0
75 150
Nemalo celis megalop ,
50 25
0
25
50
5 0 2 5 0 2 5 5 0
Stylocheiron abbreviatum
100 50 Q
50 100
100 50
0
50 100
Thysanopoda aequa/is
100 50 0
50 100
100 50
0
50 100
lndividuals per 10,j m,j
night
l S0 75 0
75 150
50
25
0
25
50
100 50
0
50 100
100 50 0
50 100
Fig.5. Day/night vertical distribution of juveniles (left) and adults (right) of E. hemigibba, N. megalops, S. abbreviatum and T.
aequalis in South Tyrrhenian Sea