РЕТРОСПЕКТИВНЫЙ АНАЛИЗ ПЕРВИЧНОЙ ПРОДУКТИВНОСТИ ПЕЛАГИАЛИ СЕВЕРО-ЗАПАДНОЙ ЧАСТИ ЧЕРНОГО МОРЯ

Variability of the primary production in the water area of the Black Sea north-western part accounted on the average for 0.13-7.9 gC • m-2 day-1 for February — August of 1959-1979 or about 50-800 gC • m-2 for spring-summer. Maximum values are obtained in 1964-1970. On the basis of total various indices the 1970s are analogous to the 1950s and are sharply different from the 1960s, when there occurred rearrangements in phytocene and in the small-large form ratio, and variations in the quantitative indices and level of production.