Primary production and chlorophyll in the Gulf

Abstract

Sell Fisheries hmti!te Gd}'llia. Pol.!md The paper presents data on primary production and chloro phyll a concentrations at two stations located in the Gulf of Gdaiisk (Baltic Sea). The primary production in 1987 was much higher than the mean values for the region, observed in other years when the production was 125-200 g C/m 2 a. Our observations show the primary production in the Puck Bay to be approximately two times that in offshore waters of the Gdaiisk Deep. The chloro phyll contents decrease along the Vistula estuary-Gdaiisk Deep transect.