hrvatski

Raznolikost fitoplanktona na širem području Kopačkog rita u sklopu projekta Naturavita

Within the Naturavita project, phytoplankton monitoring was carried out in the wider area of Nature Park Kopački rit in order to develop a long-term plan for aquatic ecosystems management. The aim of this study is to analyze phytoplankton communities and their response to changes in abiotic and biotic factors in the environment. Phytoplankton were sampled at monthly intervals from July 2020 to June 2022 at a total of 15 stations. Seven stations are located in the protected area (outside the embankment), seven in the floodplain of the Danube River, and one station on the Danube. Phytoplankton biomass at stations in the protected area ranged from 0.46 mg/L to 91.35 mg/L, while in the floodplain areas it ranged from 0.36 mg/L to 81.59 mg/L. The Danube River was characterized by the lowest values of total biomass (0.25-24.92 mg/L). In the phytoplankton communities of the protected area, the genera Synura, Dinobryon and Chrysococcus from the group Ochrophyta were predominant, while in the floodplain area, the taxa of the genera Cyclotella, Stephanodiscus and Cyclosthephanos from the group Bacillariophyta were the most represented. The Cryptophyta group was represented both in the protected as well as in the floodplain area with the dominant genera Cryptomonas and Plagioselmis. In the phytoplankton of the Danube River, the taxa of the genera Cyclotella, Stephanodiscus, Cyclostephanos and Skeletonema were the most represented. Communities known as characteristic for eutrophic aquatic ecosystems were determined at the stations of the protected and floodplain areas, while typical river potamoplankton was determined at the Danube station.

alge ; cijanobakterije ; eutrofni ekosustavi ; Dunav ; projekt Naturavita

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