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Wyszukujesz frazę "ptaki drapieżne" wg kryterium: Temat


Wyświetlanie 1-2 z 2
Tytuł:
Preferencje siedliskowe leśnych ptaków drapieżnych a struktura wiekowa lasów gospodarczych ? na przykładzie Lasów Parczewskich
Habitat preferences of birds of prey vs age structure of forest - Lasy Parczewskie case study
Autorzy:
Keller, M.
Buczek, T.
Różycki, A.L.
Powiązania:
https://bibliotekanauki.pl/articles/1013410.pdf
Data publikacji:
2008
Wydawca:
Polskie Towarzystwo Leśne
Tematy:
fauna
struktura wiekowa
lasy
lesnictwo
Lasy Parczewskie
preferencje siedliskowe
ptaki drapiezne
lasy gospodarcze
birds of prey
habitat selection
age structure of tree−stands
Opis:
The study was conducted in Lasy Parczewskie forest complex in eastern Poland in two periods: 1991−1993 and 2002−2004. We analysed the location of 384 nests belonging to 6 species of diurnal birds of prey that are common in Poland: Honey Buzzard (Pernis apivorus), White−tailed Eagle (Haliaeetus albicilla), Goshawk (Accipiter gentilis), Sparrowhawk (Accipiter nisus), Buzzard (Buteo buteo), and Lesser Spotted Eagle (Aquila pomarina). We found that all species preferred particular age classes of tree stands (Fig. 2). Sparrowhawk chose tree−stands at age of between 30 and 50 years, Honey Buzzard – older than 50 years, Buzzard and Lesser Spotted Eagle – older than 70 years, Goshawk – older than 80 years, and White−tailed Eagle – older than 90 years. Beside the fact that the Parczew Forests are cultivated and harvested in a common manner, they play an important role for all the species concerned.
Źródło:
Sylwan; 2008, 152, 02; 30-35
0039-7660
Pojawia się w:
Sylwan
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Wybór drzew gniazdowych przez myszołowa, jastrzębia i kruka w Puszczy Augustowskiej
Choosing the trees for nesting by the Buzzard, Goshawk and Raven in the Augustow Forest
Autorzy:
Zawadzki, G.
Zawadzka, D.
Powiązania:
https://bibliotekanauki.pl/articles/987067.pdf
Data publikacji:
2017
Wydawca:
Polskie Towarzystwo Leśne
Tematy:
lasy
ornitologia
ptaki drapiezne
jastrzab
Accipiter gentilis
myszolow
Buteo buteo
kruk
Corvus corax
drzewa gniazdowe
lokalizacja
preferencje siedliskowe
Puszcza Augustowska
accipiter gentilis
buteo buteo
corvus corax
nesting trees preference
Opis:
Preferences of the Buzzard, Goshawk and Raven in choosing the trees for nesting were studied in northern part of the Augustów Forest (NE Poland) in 2014−2016 years. Study area is dominated by fresh and mixed fresh sites with Scots pine as a dominant species (86% of the forest area). Nests were searched in stands older than 60 years. We found 60 nests of Buzzard, 11 of Goshawk, and 31 of Raven. The diameter and the height of nest trees, the height of nest location, and length of tree crowns were measured. Diameter and height of surrounding trees were also determined. In total, 11 features of nest trees were assessed. For the location their nests, all analysed bird species preferred trees bigger and higher than neighbouring ones. The oldest stands (above 100 years old) were also preferred. The Raven built nests on trees average 139 years old, Goshawk – 119, while Buzzard – 109. Raven nested only on Scots pine, Goshawk on Norway spruce and Scots pine, while Buzzard on silver birch, Scots pine, European larch and Norway spruce. The Buzzard selected for nest trees growing in average distance about 1500 m from forest edge, while Goshawk and Raven preferred nest in a similar distance from the forest edge (707−783 m). Distance of the nests from forest road were similar for Buzzard and Goshawk – about 60 m, and in case Raven it was only 38 m. Raven chose for nesting old−growth islands located on forest edge, or even single old tree growing on plantation. The greatest plasticity in the nest location and habitat diversity was found for Buzzard. Both Goshawk and Raven had more precisely marked habitat and nest preferences.
Źródło:
Sylwan; 2017, 161, 08; 669-676
0039-7660
Pojawia się w:
Sylwan
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-2 z 2

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