Struktura zajednica ptica pjevica ritskih šuma i plantaža topole u specijalnom rezervatu prirode Gornje Podunavlje

The research was conducted on 36 points in the northern area of the Special Nature Reserve Upper Danube. The survey of forest songbird communities was carried out using the point transect method, in parallel with the survey of vegetation characteristic on the same points, using the circular plot method. In total, 50 bird species were recorded, 24 of which (forest songbirds) underwent qualitative analysis. Investigated points were grouped in three forest types: riparian forest and young and mature hybrid poplar Populus x euroamericana plantations. The average estimated population densities of forest songbirds were 693 pairs per km2. The most abundant species in riparian forests and mature poplar plantations were the Chaffinch Fringilla coelebs and the Great Tit Parus major, while in young poplar plantations, the most abundant species were the Great Tit, the Blackcap Sylvia atricapilla, and the Greenfinch Chloris chloris. The greatest density and the highest number of species were recorded in the riparian forest, while mature poplar plantations had the greatest diversity and evenness of birds.Na području Specijalnog rezervata prirode Gornje Podunavlje je na 36 točaka provedeno istraživanje šumskih zajednica ptica metodom točkastog transekta te vegetacijskih značajki metodom kružnih ploha. Zabilježeno je ukupno 50 vrsta ptica, od čega je 24 uključeno u kvantitativnu analizu. Šume su podijeljene u ritske šume te mlade i stare plantaže hibridne topole Populus x euroamericana. Prosječna procijenjena gustoća ptica u svim tipovima šuma je 665 parova/km2. Najbrojnije vrste ptica u ritskim šumama i starim plantažama su zeba Fringilla coelebs i velika sjenica Parus major, dok su u mladim plantažama najbrojnije vrste velika sjenica, crnokapa grmuša Sylvia atricapilla i zelendur Chloris chloris. Najveću brojnost vrsta i populacija imale su ritske šume, dok su stare plantaže topole imale najveću raznolikost i ujednačenost zajednica