Inny tytuł:

Zróżnicowane ryzyko wymierania kolonii lęgowych gawrona na obszarach wiejskich i miejskich Śląska ; Extinction risk of Rook’s colonies

Współtwórca:

Museum and Institute of Zoology, Polish Academy of Sciences

Wydawca:

Museum and Institute of Zoology, Polish Academy of Sciences ; Natura Optima Dux Foundation

Miejsce wydania:

Warsaw

Opis:

pg(s) 145–155

Typ obiektu:

Czasopismo/Artykuł

Abstrakt:

In 1983–1999 in SW Poland (40 540 km2, 13% of the total area of Poland) the Rook was reported to nest in at least 270 colonies with a combined total of from ca. 18 to > 20 thousand breeding pairs. Between 1983–1988 and 1992–1999,105 (39% ) colonies were abandoned, i.e., 16–20% of the population as recorded in earlier periods. The largest drop in numbers (34%) occurred in rural populations. The median for abandoned colonies was 16 nests, which was nearly six times lower than that for active rookeries (median = 99). General linear models (GLM) indicate that the abandonment of colonies depends on their location (village, small town, city), the size and number of nests, and the presence of other rookeries in the vicinity of those studied. The best-fit model describing rookery extinction invoked the number of nests and other colonies within a radius of < 10 km from the colony studied. In each of three analyzed radii (10, 20 and 30 km) the numbers of nests and other colonies were decidedly higher around extinct rookeries. Active Rook colonies were farther away from the nearest rookery, and also from large colonies consisting of 50, 100 and 150 nests. The probability that a rookery would be abandoned was strongly negatively correlated with its size.

Czasopismo/Seria/cykl:

Acta Ornithologica

Tom:

42

Zeszyt:

2

Strona pocz.:

145

Strona końc.:

155

Szczegółowy typ zasobu:

Czasopismo

Format:

text/xml

Identyfikator zasobu:

oai:rcin.org.pl:55646 ; 10.3161/068.042.0209

Źródło:

MiIZ PAN, sygn. P.4568 ; MiIZ PAN, sygn. P.257 ; kliknij tutaj, żeby przejść

Język:

eng

Język streszczenia:

pol ; eng

Prawa:

Prawa zastrzeżone - dostęp nieograniczony

Zasady wykorzystania:

Zasób chroniony prawem autorskim. Korzystanie dozwolone w zakresie określonym przez przepisy o dozwolonym użytku.

Digitalizacja:

Muzeum i Instytut Zoologii Polskiej Akademii Nauk

Lokalizacja oryginału:

Biblioteka Muzeum i Instytutu Zoologii PAN

Dostęp:

Otwarty