EFFECT OF HABITAT CHANGES AT STOPOVER SITE «CHOLGINI RESERVE» ON SPECIES RICHNESS AND ABUNDANCE OF WADERS

In this paper we discuss changes in the abundance and richness of waders during migration on sewage ponds of «Cholgini» ornithological reserve in 1995-2014. Numbers of waders have declined during study period in 15 times, species richness decreased from 34 to 19 species. The greatest decline in numb...

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Bibliographic Details
Main Authors: Strus, Yu., Shydlovskyy, I.
Format: Article in Journal/Newspaper
Language:Ukrainian
Published: Ivan Franko National University of Lviv 2015
Subjects:
Online Access:http://publications.lnu.edu.ua/bulletins/index.php/biology/article/view/4348
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Summary:In this paper we discuss changes in the abundance and richness of waders during migration on sewage ponds of «Cholgini» ornithological reserve in 1995-2014. Numbers of waders have declined during study period in 15 times, species richness decreased from 34 to 19 species. The greatest decline in numbers occurred in such species as Vanellus vanellus, Numenius arquata, Tringa glareola. Somewhat lesser decline we observed in Recurvirostra avosetta, Gallinago gallinago, Tringa totanus, Calidris alpina, C. ferruginea, C. minuta, Philomachus pugnax, Actitis hypoleucos, Charadrius hiaticula, Limosa limosa. Numbers of three species were stable: Tringa nebularia, Tringa ochropus, Calidris temminckii. Among all waders only Tringa erythropus has demonstrated clear increasing trend. Main factors of decline in species richness and abundance were habitat successions altered by changes in water regime. Most suitable water regime of periodical flooding was artificially created at this territory by sulfur extraction plant that has created and used reservoirs as sewage ponds for used industrial water. The regime was broken after cessation of plant industrial activity.Keywords: waders, Charadrii, numbers, migration, habitat successions. Розглянуто зміни у фауні та чисельності куликів в орнітологічному заказнику «Чолгинський» під час міграції за 1995–2014 рр. та фактори, які спричинили ці зміни. Чисельність куликів за дослідний період скоротилась у 15 разів, а кількість видів зменшилася від 34 до 19. Головними причинами цих змін були зменшення площі водойм, заростання берегів, турбування людиною.Ключові слова: кулики, Charadrii, чисельність, міграція, сукцесії.