Tones
Catch
Bream
Pike
Crucian
Roach
1973
0
1000
2000
3000
4000
5000
6000
7000
8000
1974
1975
1976
1977
1978
1979
1980
1981
1982
1983
1984
1985
1986
1987
1988
1989
1990
1991
1992
1993
Fig. 41.10 The evolution of fish yields per total number of species, in the Danube Delta, during
the period 1973–1993 (Source: The Danube Delta Research Institute)
Fig. 41.11 Sturgeon
capture in Danube Delta in
50’–60
0 years, 20
0 century
(Source: Danube Delta
Research Inst.)
680
A. Lup et al.