Zmiany liczebności wybranych lęgowych gatunków ptaków w tarasie zalewowym doliny dolnego Bugu w okresie 1984-2014
Journal Title: KULON - Year 2014, Vol 19, Issue
Abstract
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, significant changes in numbers of the majority of breeding species were noted. The progressive group comprised only 11 species: the Mute swan Cygnus olor, Whooper Swan Cygnus cygnus, Greylag Goose Anser anser, Goldeneye Bucephala clangula, White Stork Ciconia ciconia, Bittern Botaurus stellaris, Crane Grus grus, Marsh Harrier Circus aeruginosus, White-tailed Eagle Haliaeetus albicilla, White-winged Black Tern Chlidonias leucopterusand, and Stonechat Saxicola rubicola. Five species fluctuated: Goosander Mergus merganser, Common Sandpiper Actitis hypoleucos, and Curlew Numenius arquata – after an initial large increase, their numbers markedly declined in the last period, while the Black-headed Gull Chroicocephalus ridibundus and the Whiskered Tern Chlidonias hybrida occurred in unusually large numbers only in 2013. Much more species (23) considerably declined, and only two species did not show such tendency: the Gadwall Anas strepera and Black Tern Chlidonias nigra. Numbers of the White-winged Black Tern were highest during the 2010 and 2013 extensive river floods. Marked differences in numbers of waterbirds existed in hydrologically different seasons: 2013 (prolonged inundation of the valley) and 2014 (absence of spring flooding of the valley). Extensive flooding of the valley in the breeding season of 2013 enhanced 16 species. The breeding season of 2014, with lower flooding, enhanced 9 species occupying different habitat types, and 9 riverine species that in May-June 2013, occupied in low numbers the river channel and willow thickets on the river sides totally flooded at that time.
Authors and Affiliations
Andrzej Dombrowski, Artur Goławski, Zbigniew Kasprzykowski, Adam Dmoch, Marek Twardowski, Ewa Szczepankiewicz, Paweł Cieśluk, Robert Miciałkiewicz, Jarosław Zawadzki, Tomasz Smoleński, Emilia Mróz, Magdalena Sikora, Łukasz Trębicki, Maciej Omelaniuk, Mieczysław Kurowski, Krzysztof Mortka, Marcin Sidelnik
Keywords
Related Articles
- EP ID EP166405
- DOI -
- Views 86
- Downloads 0
Sprawozdanie z zimowego monitoringu ptaków na obiektach wodnych Niziny Mazowieckiej w styczniu 2017 roku
In the second decade of January 2017, the counts of birds wintering in the river valleys and on other water bodies of the Mazovian Lowland were carried out. A single control was conducted on 14-15 January (acceptable ran...
ZARYS DYNAMIKI LICZEBNOŚCI SZPONIASTYCH ACCIPITRIFORMES I SOKOŁOWYCH FALCONIFORMES W OKRESIE POZALĘGOWYM W KRAJOBRAZIE ROLNICZYM POD SIEDLCAMI
In the periods 4 November 2011 to 15 March 2012 and 14 August to 21 November 2012, 11 surveys of birds of prey Accipitriformes and Falconiformes were conducted in the Zbuczyn area (56.3 square km) near Siedlce (E. Poland...
JESIENNE PRZELOTY PTAKÓW WODNO-BŁOTNYCH NAD ŚRODKOWĄ WISŁĄ W OKOLICACH KONSTANCINA-JEZIORNY W 2015 ROKU
The Middle Vistula Valley, and especially its section crossing three nature reserves, Łachy Brzeskie, Wyspy Świderskie, and Wyspy Zawadowskie, is an important stopover and foraging sitefor non-passerine waterbirds during...
DUŻA LICZBA MARTWYCH ZASKROŃCÓW ZWYCZAJNYCH NATRIX NATRIX NA LOKALNEJ DRODZE
On 3 October 2015, on the local, asphalt road Borek – Pagowiec (51°35’40’’N, 21°0’47’’E, Central Poland), 74 dead grass snakes Natrix natrix (0.8 ind./10 m) were found, and two alive on the road side. The inventory was c...
SKŁAD POKARMU USZATEK ASIO OTUS GNIAZDUJĄCYCH NA TERENIE GMINY GŁUCHÓW (ŚRODKOWA POLSKA)
The analysed pellet material was collected in the years 2014-2015 in the forest complex Prusy, a part of Rogów Forest District. Diet of owls was dominated by voles Microtus spp., accounting for 76% of prey items. The con...