DATA ABOUT THE ECOLOGY OF THE WATERBIRDS FROM THE VIDRARU DAM BASIN (ARGEȘ COUNTY, ROMANIA)
DATA ABOUT THE ECOLOGY OF THE WATERBIRDS FROM THE VIDRARU DAM BASIN (ARGEȘ COUNTY, ROMANIA)

Summary/Abstract: Some characteristics regarding the ecology of the waterbirds observed on the Vidraru Dam Basin between April 2022 and March, 2023 are shown in this paper. The constancy, the dominance, the Dzuba Index of ecological significance, the Index of Relation, the coenotic affinity, the diversity and the equitability of the species were discussed. Also, some remarks about the density of the species were done. 14 species of waterbirds were observed during the period of study and, generally, Anas platyrhynchos, Mergus merganser, Phalacrocorax carbo and Larus cachinnans were the most important among them in the ecosystem. As a result, Anseriformes, Suliformes and Charadriiformes were the overdominant orders of the avicoenose. The richness and the density of the species were low by comparison with the ones found on the dam basins from the downstream, proving that, currently, the Vidraru Dam Basin has a relatively low importance for the waterbirds, except for Mergus merganser, the only species certainly breeder here, and of other few species, which stay or pass through the area, the most in rather low numbers.

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