Breeding success of Oystercatcher, terns and gulls in the Danish Wadden Sea

Autor: Bregnballe, Thomas, Thorup, Ole, Jensen, Peter Emil, Nielsen, Rasmus Due, Pedersen, Kjeld Tommy, Laursen, Karsten
Jazyk: angličtina
Rok vydání: 2015
Předmět:
Zdroj: Bregnballe, T, Thorup, O, Jensen, P E, Nielsen, R D, Pedersen, K T & Laursen, K 2015, Breeding success of Oystercatcher, terns and gulls in the Danish Wadden Sea . Technical Report from DCE – Danish Centre for Environment and Energy, vol. 60 .
Popis: Knowledge about breeding success is relevant for understanding the trends observed in local and regional breeding populations of waders, terns and gulls. This report compiles results from surveys of breeding success of Oystercatchers and terns breeding on the island of Mandø, and of terns and gulls breeding on the island of Langli. Both islands are located in the Danish Wadden Sea. Oystercatchers were monitored in 2010 and 2011 and bred successfully in one of these. Common Terns and Artic Terns were studied on Mandø mainly in 2009-2011 and they bred with very poor success in all years. Successful breeding of Sandwich Terns was recorded onLangli in most of the years during 2006-2010. The Lesser Black-backed Gulls andHerring Gulls that nested on Langli were fairly successful in raising young to fledgingduring 2009-2013, whereas Common Gulls suffered from predation by Herring Gullsand they hardly raised any young. It is concluded that a future low cost monitoringprogramme of breeding success could focus on Oystercatchers on Mandø andHerring Gulls on Langli.
Databáze: OpenAIRE