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MILA
MiLA
Nz
Nz
26
24
20
16 -30
12 -20
e
- 10
4
A
B 25
15 -20

15
10
c
MILIONI
Kg
-ISO

-100

60

20
1770 80 90 laOO 10 20 30 40 50 60 70 80 90 1900 10 20 30 40

Figure I. Diogram of the catches; smoothed by nine years, of the fisheries of; A, group of
the Department of Tavira (Portugal); B, Medo das Cascos (Portugal); C, Sidi-Daud
(Tunisia); D, P. Scuso I. Plana (Sardinio); E, fishery for herring at Bohuslan
(Johansen), data not smoothed.
TN; The upper part of the vertical axis represents thousands of fish, the lower
part millions of kilogroms.

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