DYNAMICS OF THE PRIMARY PRODUCTION IN ACCUMULATION “STREZEVO” IN THE REPUBLIC OF MACEDONIA

The level and dynamics of the primary production in accumulation “Strezevo” were investigated during the period from March until October 2009. Based on the obtained results from our investigation, the level of the primary production in the accumulation varies and indicates clear seasonal fluctuations. The highest level of the primary production was 9.29 mg/l water and was observed during the summer on the first investigated locality, where the river Shemnica flows into the accumulation, and the lower level was near the floodgate and was from 3.62 to 6.45 mg/l. During the autumn months the primary production level was higher in all profiles, mainly at the beginning of the accumulation and was 12.49 mg/l.