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

Na području Monoštorskog rita u Specijalnom rezervatu prirode 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. Research was conducted on 36 points in the northern area of Special Nature Reserve Upper Danube. Survey of forest songbird communities was conducted using the point transect method, in parallel with a 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: fluvial forest and young and mature hybrid poplar Populus x euroamericana plantations. The average estimated population densities of forest songbirds was 665 pairs per km2. Most abundant species in fluvial forests and mature poplar plantations were chaffinch Fringilla coelebs and great tit Parus major, while in young poplar plantations most abundant species were great tit, blackcap Sylvia atricapilla and greenfinch Chloris chloris. The greatest densities and higher number of species was recorded in fluvial forest, while mature poplar plantations had the greatest diversity and evenness of birds.