La Tour du Valat

Institut de recherche pour la conservation des zones humides méditerranéennes

Titre :	Overview of population trend and spatial distribution of Black Terns Chlidonias niger in Lower Saxony
Auteurs :	Peter Suedbeck, Auteur ; Dieter Wendt, Auteur
Type de document :	Article
Dans :	Vogelwelt (Die) (126(3) 2005)
Article en page(s) :	215-217
Résumé :	In 2004, Black Terns in Lower Saxony occurred at only four sites. Altogether, 132 pairs nested on shallow lakes, oxbows and peat bogs. The SPAs Ewiges Meer, Dummer, and Elbeniederung, designated in 2002, hosted 95% of the present population. Protection measures helped to stabilise the population development since 1999. The mean population size was about 130 pairs. The small population with its few colony sites is susceptible for local impacts such as extreme weather, disturbances, and deterioration of foraging habitats. Besides the measures to protect the existing nesting sites it is necessary, therefore, to create potential new breeding and foraging sites, e.g. through the Natura 2000 network.

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