Populacja sóweczki Glaucidium passerinum w rozdrobnionych lasach Niziny Północnopodlaskiej

• Autorzy: Tumiel T. , Białomyzy P. , Grygoruk G. , Myka O. , Swietochowski P.

Warianty tytułu

EN

Population of the Pygmy Owl Glaucidium passerinum in fragmented forests of the North Podlasie Lowland

• Języki publikacji: PL

Abstrakty

EN

This paper presents records of the Pygmy Owl during the breeding season on a sample plot in the North Podlasie Lowland. In 2020 a survey of the Pygmy Owl was conducted on a plot of 252 km2 in an agriculture-forest landscape of the North Podlasie Lowland (NE Poland). Agricultural crops dominated there (61%) and forests covered 31% of the area. Six territories of Pygmy Owls were found, and four of them were classified as breeding ones. The species density in woodlands was 1.3 pairs/10 km². The Pygmy Owl was found also in two fragmented forests of the area of 2.7 km² and 3 km², respectively. Moreover, in 2011–2020 fifteen other territories of Pygmy Owl were found outside the regular breeding areas of the species in the North Podlasie Lowland. In two of them breeding was confirmed. Nest holes were located in pine and spruce forests, which were 59, 69, 72, 82 and 104 years old, on average 77 years old (n=5). Breeding was recorded in fresh mixed deciduous forest (5) and fresh mixed coniferous forest (1), in the forest stands dominated by pine (5) and spruce (1). The age of forest stands occupied by breeding Pygmy Owls in the fragmented forests was lower than in large forest complexes. The increase in the number of individuals and the appearance of territories in the areas previously not occupied by Pygmy Owls is a premise for searching for the species outside the present breeding range, also in fragmented forest complexes with middle-aged stands.

Słowa kluczowe

PL

soweczka; Glaucidium passerinum; ptaki; gniazda ptasie; liczebnosc; populacje; obserwacje; wystepowanie; lasy; Nizina Polnocnopodlaska

• Wydawca: -
• Czasopismo: Ornis Polonica
• Rocznik: 2021
• Tom: 62
• Numer: 2
• Opis fizyczny: s.149-168,rys.,bibliogr.

Twórcy

autor

Tumiel T.

• Towarzystwo Przyrodnicze Dubelt, Juszkowy Gród 17, 16-050 Michałowo, [e-mail]

autor

Białomyzy P.

autor

Grygoruk G.

autor

Myka O.

autor

Swietochowski P.