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W pracy przedstawiono strukturę i liczebność ptaków na Zbiorniku Goczałkowickim w latach 2011–2012. Zbiornik został włączony do sieci obszarów Natura 2000 i należy do ważnych ostoi ptaków w Polsce. Środowisko zbiornika zmieniło się jednak po remoncie zapory prowadzonym w latach 2001–2005. Powierzchnia makrofitów uległa zmniejszeniu. W okresie badań stwierdzono występowanie 101 gatunków ptaków związanych...
Results of mapping censuses carried out in plots situated in three types of old-growth stands (riverine, oak-hornbeam, coniferous) in 1990-1994 are presented and contrasted with data gathered in the same plots in 1970s (Tomiałojć et al. 1984). Community composition parameters: number of breeding species (72 versus 75), make-up of dominants, and overall assemblage similarity (Renkonen's index 76-87%)...
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