Bocian biały Ciconia ciconia w Łomżyńskim Parku Krajobrazowym Doliny Narwi i jego otulinie w latach 1999-2014
Journal Title: KULON - Year 2014, Vol 19, Issue
Abstract
The study was conducted in 1999-2014 in the Łomża Landscape Park in the Narew Valley (73.5 km2) and its buffer zone (123.1 km2), in total 196.6 km2 (central point: 53°08′N; 22°12′E). During 16 years of the study, a significant increase was recorded in the number of nesting pairs (r = 0.56; p = 0.023). The mean density over this period was 48.8 pairs/100 km2 (SD = 6.4). The highest densities were in 2012 and 2013 (57.5 pairs/100 km2), and the lowest in 2002 (37.1 pairs/100 km2). Along with the increase in number, the breeding success increased. The average number of young raised by a pair varied from 1.73 in 2001 to 3.06 in 2010 (JZa mean 2.43; SD = 0.4), and the average number of young raised by a successful pair varied from 2.15 in 2001 and 2003, to 3.23 in 2010 (JZm mean 2.71; SD = 0.3). Among the pairs with offspring, broods with 2 and 3 nestlings dominated (32.0% and 38.7%, respectively), while broods with 4 and 5 offspring made up 17.0% and 2.7%, respectively. In 2013-2014, the great majority of the nests was situated on electric poles (74.4% and 77.2%), whereas ca. 1/4 of the inventoried breeding sites was located on building roofs. During the study period, the number of colonies varied from 5 in 1999 to 10 in 2004. The median date of the arrival of the first bird on the nest was the 81st day of the year. Although the number of the White Stork breeding pairs on the Natura 2000 special protection area „Ravine Valley on the Narew River” (which actually lies within the borders of the Park – in 96.8%) does not make up at least 1% of the national population, yet it reached one of the highest densities in Poland (66.7 pairs/100 km2), and in 2014, the StDB index was 169.4 pairs/100 km2. Due to this, the White Stork deserves recognition as the subject of protection of the Natura 2000 site.
Authors and Affiliations
Adam Zbryt
Keywords
Related Articles
- EP ID EP167746
- DOI -
- Views 113
- Downloads 0
Stwierdzenie Corbicula fluminea (O.F. Muller, 1774)(Veneroida: Corbiculidae) w środkowej Wiśle
On 19 September 2016, the shells of the Asian freshwater clam Corbicula fluminea were recorded at three sites on the left bank of the Vistula River upstream, near Warsaw. The studied sites were located near Kępa Zawadows...
Zgrupowania ptaków lęgowych zasiedlających parki w Siedlcach pomiędzy rokiem 1968 a 2008
A successive inventory of breeding fauna was conducted in three parks of Siedlce. In the Ogińskich’s Park (1.5 ha), 28 breeding species were noted in 2007 and 29 in 2008. In 2007, 1169.5 pairs were nesting, including as...
Awifauna lęgowa stawów rybnych w Rudzie w okresie 1980-2016
In 1989 and 2016, an intensive survey (11 counts each year) on the number of breeding avifauna of ! sh ponds in Ruda (96 ha) in the valley of the Mienia River in Mińsk district (Mazovian voivodeship) was carried out with...
Awifauna lęgowa łęgu przystrumykowego nad Mogielanką w środkowej Polsce
In 1994, the mapping method was used on an area of 34.8 ha to estimate numbers of birds breeding along the Mogielanka stream. The area consisted of the following habitat types: streamside woodland – 16.0 ha (46.0%), Urti...
Zmiany liczebności wybranych lęgowych gatunków ptaków w tarasie zalewowym doliny dolnego Bugu w okresie 1984-2014
In 2012-2014, the third inventory of selected bird species was conducted during the breeding season. Changes in the number of breeding pairs of 41 species were determined in the period 1984-2014. After three decades, sig...