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The Bistrita River was the first river harnessed for hydropower purposes in Romania, starting with 1960. Currently, on this river, 29 hydropower plants with different capacities are functioning, producing about 10% of the entire Romanian electric energy from hydro. Many of them were realized in series, in cascade. In the present paper, the area of Pangarati, Vaduri, Batca Doamnei, and Reconstructia hydropower lakes was analyzed. Of these, three are Nature Reservations, Nature 2000, RAMSAR sites. The lakes being re...

In the last decades in Romanian forests, a massive phenomenon of uncontrolled cut trees was observed, leading to a new environmental problem. In these conditions, the solar radiation affects the seedlings of some tree species as the beech and oak, and generally the entire life from these forests. In the last 5-6 years, a supplementary massive invasion of the white mistletoe was observed, especially associated with the silver fir and beech. The main objective of this paper is to associate the effects of the solar r...