Ornithological researches on the Gole ti Dam Lake (Arge county, Romania) during 2003 - 2010

199 bird species were observed in the Gole ti Dam Lake, from the middle hydrographical basin of the Arge River, during 2003 – 2010 (minimum – 64 in January and maximum – 141 in April). Their distribution regarding the constancy, dominancy and Dzuba index of ecological signification were considered. There are two eudominant species (Anas platyrhynchos and Aythya ferina) and two dominant species (Aythya fuligula and Larus ridibundus). The variation in the number of individuals during the year is strongly determined by the temperature variation that leads to the diminishing or increasing of the food resources. In winter, when the temperatures were low in the north (and the waters froze), the birds arrived in great number in our area but only a few of them remained in the area for breeding.