THE COENOTIC AFFINITY OF SOME SPECIES OF BIRDS OBSERVED ON SEVERAL DAM BASINS FROM THE ARGEŞ RIVER IN THE AUTUMN MIGRATORY SEASON
THE COENOTIC AFFINITY OF SOME SPECIES OF BIRDS OBSERVED ON SEVERAL DAM BASINS FROM THE ARGEŞ RIVER IN THE AUTUMN MIGRATORY SEASON

Summary/Abstract: We purposed in this paper to show the coenotic affinities established between the species of birds directly dependent on waters, observed on some dam basins from ROSPA0062 - The dam basins from the Argeş River during the autumn migratory season of 2013, which correspond to the serotinal and autumnal ecologically seasons, when the majority of the migratory birds appear through the area. Aythya ferina and Anas platyrhynchos were the most characteristic species from the coenotic affinity point of view for the whole series of the researched reservoirs, while Larus ridibundus and Podiceps cristatus were the most characteristic species for Vâlcele Dam Basin, Anas platyrhynchos and Aythya ferina, for the Budeasa Dam Basin, Anas platyrhynchos and Phalacrocorax carbo, for the Bascov Dam Basin, Aythya ferina and Cygnus olor, for the Piteşti Dam Basin, and, again, Aythya ferina and Anas platyrhynchos, for the Goleşti Dam Basin. The generally different pairs of characteristic species highlight once more the different life conditions for the birds from every dam basin, that are influenced by the succession of these reservoirs on the river course, the type of habitats, the human pressure, etc. Also, other considerations about the phenology of the species and the similarity between the avicoenoses of the taken into study dam basins are done in the paper.

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