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Wpływ ekranów akustycznych na śmiertelność ptaków na przykładzie Bielska-Białej

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Adamczyk M., Chmura D.
Polish Journal of Materials and Environmental Engineering
|
2023
|
vol. 5(25)
32-40
EN
The studies on bird mortality along 12 transparent acoustic barriers near roads in Bielsko-Biala (Poland) were conducted from March to October in 2017. The aim was to characterize avifauna striking glass barriers and to relate frequency of collisions to time, developmental stage, sex, vicinity of noise barrier. During the breeding season of birds, 102 collisions of birds with screens, belonging to 25 species, were found. The most collisions were found in June, when 29 victims were observed. In this month, the largest number of juveniles (imm.) was also determined - 17 victims, the lowest number of collisions was at the end of the breeding season (September and October), where the number of collisions did not exceed 7 victims. The largest family of birds hitting the screens are Paridae, which account for as much as 31.4% of all victims. The largest number of collisions occurred with the participation of adults (ad - 68.) while 34 were young victims. The most active young birds were in June, when 17 collision victims were found. From the side of the road, as many as 60 fatalities were observed, while from the other side of the habitats - 42. As for the sex of individuals, most probably there were males (42), and there were 28 females. We conclude that acoustic screens should have nontransparent: stickers, stripes, dots, foils or be replaced by greening walls or earth embankments.
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