POPULATION SIZE AND NESTING PECULIARITIES OF THE BLACK-HEADED GULL CHROICOCEPHALUS RIDIBUNDUS (LINNAEUS, 1766) ON THE TERRITORY OF WATER TREATMENT FACILITIES
Background. Today, the black-headed gull inhabits man-made areas of wastewater treatment facilities (WTF) to comensate for the the reduction of natural aquatic and wetland habitats. Over the last decade, a nearly tenfold increase in its population has been recorded, despite a low reproduction rate....
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Львівський національний університет імені Івана Франка
2024
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ftlvivunivojs2:oai:ojs.publications.lnu.edu.ua:article/4562 2024-09-09T20:10:35+00:00 POPULATION SIZE AND NESTING PECULIARITIES OF THE BLACK-HEADED GULL CHROICOCEPHALUS RIDIBUNDUS (LINNAEUS, 1766) ON THE TERRITORY OF WATER TREATMENT FACILITIES ЧИСЕЛЬНІСТЬ І ОСОБЛИВОСТІ ГНІЗДУВАННЯ МАРТИНА ЗВИЧАЙНОГО CHROICOCEPHALUS RIDIBUNDUS (LINNAEUS, 1766) НА ВОДООЧИСНИХ СПОРУДАХ Mamedova, Yulia Chaplygina, Angela 2024-06-13 application/pdf http://publications.lnu.edu.ua/journals/index.php/biology/article/view/4562 https://doi.org/10.30970/sbi.1802.770 eng eng Львівський національний університет імені Івана Франка http://publications.lnu.edu.ua/journals/index.php/biology/article/view/4562/1723 http://publications.lnu.edu.ua/journals/index.php/biology/article/view/4562 doi:10.30970/sbi.1802.770 Copyright (c) 2024 Yulia Mamedova, Angela Chaplygina http://creativecommons.org/licenses/by/4.0 Біологічні студії / Studia Biologica; Том 18, № 2 (2024); 201-218 2311-0783 1996-4536 10.30970/sbi.1802 Biology Zoology Ornithology Ecology wastewater treatment facilities black-headed gull population size nesting biology aviafauna водоочисні споруди мартин звичайний чисельність гніздова біологія орнітофауна info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Original Research work 2024 ftlvivunivojs2 https://doi.org/10.30970/sbi.1802.77010.30970/sbi.1802 2024-06-16T23:36:22Z Background. Today, the black-headed gull inhabits man-made areas of wastewater treatment facilities (WTF) to comensate for the the reduction of natural aquatic and wetland habitats. Over the last decade, a nearly tenfold increase in its population has been recorded, despite a low reproduction rate. This fact indicates the lack of stability in the bird population, necessitating thorough research. Materials and Methods. The analysis of the population size and biological characteristics of black-headed gulls involved censuses and observations at the WTF of the city of Kharkiv using conventional methods during the spring-summer periods of 2020–2021 and 2023. Results. The population of the black-headed gull reached its peak in the third decade of May 2020 (2637 individuals) and 2023 (2124 individuals), as well as in the second decade of May 2021 (3949 individuals). The maximum nesting density was observed on sludge sites (SS) of wastewater treatment facilities that are most similar to natural habitats, where dried mud alternates with water patches and vegetation at the bottom and around the perimeter (Type V): 236.7±26.7 pairs/ha in 2020 and 242.9±28.5 pairs/ha in 2021. The majority of nests were found in the first decade of May 2021 and the third decade of May 2020. The black-headed gull forms mixed-species, occasionally monospecific subcolonies. Nesting in association with it were: Sterna hirundo, Anas platyrhynchos, Spatula clypeata, Vanellus vanellus, Charadrius dubius, Himantopus himantopus, Fulica atra, Gallinula chloropus, and Aythya ferina. The size of the complete black-headed gull clutch was 3.1±0.4 eggs (n = 190). The egg dimensions were 50.9±2.1 ´ 36.2±1.1, with a mass of 34.6±2.8 g. Regarding shell coloration, five types of background colors were identified. Mass egg laying occurred from the third decade of April to the first decade of May, constituting 40.3 % (n = 993) in 2020 and 62.3 % (n = 1757) in 2021. The egg-laying period extended from April to July, with the latest non-incubated clutches ... Article in Journal/Newspaper Sterna hirundo Vanellus vanellus Black-headed Gull Chroicocephalus ridibundus Ivan Franko National University of Lviv Journals |
institution |
Open Polar |
collection |
Ivan Franko National University of Lviv Journals |
op_collection_id |
ftlvivunivojs2 |
language |
English |
topic |
Biology Zoology Ornithology Ecology wastewater treatment facilities black-headed gull population size nesting biology aviafauna водоочисні споруди мартин звичайний чисельність гніздова біологія орнітофауна |
spellingShingle |
Biology Zoology Ornithology Ecology wastewater treatment facilities black-headed gull population size nesting biology aviafauna водоочисні споруди мартин звичайний чисельність гніздова біологія орнітофауна Mamedova, Yulia Chaplygina, Angela POPULATION SIZE AND NESTING PECULIARITIES OF THE BLACK-HEADED GULL CHROICOCEPHALUS RIDIBUNDUS (LINNAEUS, 1766) ON THE TERRITORY OF WATER TREATMENT FACILITIES |
topic_facet |
Biology Zoology Ornithology Ecology wastewater treatment facilities black-headed gull population size nesting biology aviafauna водоочисні споруди мартин звичайний чисельність гніздова біологія орнітофауна |
description |
Background. Today, the black-headed gull inhabits man-made areas of wastewater treatment facilities (WTF) to comensate for the the reduction of natural aquatic and wetland habitats. Over the last decade, a nearly tenfold increase in its population has been recorded, despite a low reproduction rate. This fact indicates the lack of stability in the bird population, necessitating thorough research. Materials and Methods. The analysis of the population size and biological characteristics of black-headed gulls involved censuses and observations at the WTF of the city of Kharkiv using conventional methods during the spring-summer periods of 2020–2021 and 2023. Results. The population of the black-headed gull reached its peak in the third decade of May 2020 (2637 individuals) and 2023 (2124 individuals), as well as in the second decade of May 2021 (3949 individuals). The maximum nesting density was observed on sludge sites (SS) of wastewater treatment facilities that are most similar to natural habitats, where dried mud alternates with water patches and vegetation at the bottom and around the perimeter (Type V): 236.7±26.7 pairs/ha in 2020 and 242.9±28.5 pairs/ha in 2021. The majority of nests were found in the first decade of May 2021 and the third decade of May 2020. The black-headed gull forms mixed-species, occasionally monospecific subcolonies. Nesting in association with it were: Sterna hirundo, Anas platyrhynchos, Spatula clypeata, Vanellus vanellus, Charadrius dubius, Himantopus himantopus, Fulica atra, Gallinula chloropus, and Aythya ferina. The size of the complete black-headed gull clutch was 3.1±0.4 eggs (n = 190). The egg dimensions were 50.9±2.1 ´ 36.2±1.1, with a mass of 34.6±2.8 g. Regarding shell coloration, five types of background colors were identified. Mass egg laying occurred from the third decade of April to the first decade of May, constituting 40.3 % (n = 993) in 2020 and 62.3 % (n = 1757) in 2021. The egg-laying period extended from April to July, with the latest non-incubated clutches ... |
format |
Article in Journal/Newspaper |
author |
Mamedova, Yulia Chaplygina, Angela |
author_facet |
Mamedova, Yulia Chaplygina, Angela |
author_sort |
Mamedova, Yulia |
title |
POPULATION SIZE AND NESTING PECULIARITIES OF THE BLACK-HEADED GULL CHROICOCEPHALUS RIDIBUNDUS (LINNAEUS, 1766) ON THE TERRITORY OF WATER TREATMENT FACILITIES |
title_short |
POPULATION SIZE AND NESTING PECULIARITIES OF THE BLACK-HEADED GULL CHROICOCEPHALUS RIDIBUNDUS (LINNAEUS, 1766) ON THE TERRITORY OF WATER TREATMENT FACILITIES |
title_full |
POPULATION SIZE AND NESTING PECULIARITIES OF THE BLACK-HEADED GULL CHROICOCEPHALUS RIDIBUNDUS (LINNAEUS, 1766) ON THE TERRITORY OF WATER TREATMENT FACILITIES |
title_fullStr |
POPULATION SIZE AND NESTING PECULIARITIES OF THE BLACK-HEADED GULL CHROICOCEPHALUS RIDIBUNDUS (LINNAEUS, 1766) ON THE TERRITORY OF WATER TREATMENT FACILITIES |
title_full_unstemmed |
POPULATION SIZE AND NESTING PECULIARITIES OF THE BLACK-HEADED GULL CHROICOCEPHALUS RIDIBUNDUS (LINNAEUS, 1766) ON THE TERRITORY OF WATER TREATMENT FACILITIES |
title_sort |
population size and nesting peculiarities of the black-headed gull chroicocephalus ridibundus (linnaeus, 1766) on the territory of water treatment facilities |
publisher |
Львівський національний університет імені Івана Франка |
publishDate |
2024 |
url |
http://publications.lnu.edu.ua/journals/index.php/biology/article/view/4562 https://doi.org/10.30970/sbi.1802.770 |
genre |
Sterna hirundo Vanellus vanellus Black-headed Gull Chroicocephalus ridibundus |
genre_facet |
Sterna hirundo Vanellus vanellus Black-headed Gull Chroicocephalus ridibundus |
op_source |
Біологічні студії / Studia Biologica; Том 18, № 2 (2024); 201-218 2311-0783 1996-4536 10.30970/sbi.1802 |
op_relation |
http://publications.lnu.edu.ua/journals/index.php/biology/article/view/4562/1723 http://publications.lnu.edu.ua/journals/index.php/biology/article/view/4562 doi:10.30970/sbi.1802.770 |
op_rights |
Copyright (c) 2024 Yulia Mamedova, Angela Chaplygina http://creativecommons.org/licenses/by/4.0 |
op_doi |
https://doi.org/10.30970/sbi.1802.77010.30970/sbi.1802 |
_version_ |
1809945027762192384 |