La Tour du Valat

Institut de recherche pour la conservation des zones humides méditerranéennes

Titre :	Seabirds at Sea - studies in German waters.
Auteurs :	Stefan Garthe, Auteur ; Philipp Schwemmer, Auteur
Type de document :	Article
Dans :	Vogelwelt (Die) (126(1) 2005)
Article en page(s) :	67-74
Résumé :	Since the year 2000, several larger and smaller projects could be raised within the framework of the Seabirds at Sea Program. They led to a considerable improvement of the data basis as well as enabled extensive analyses. New surveys provided substantial improvements of our knowledge of large-scale spatial and seasonal distributions of seabirds and coastal birds in German waters. This holds true also for seabirds in the German Baltic Sea in summer which were hardly studied so far. In addition to ship-based transect counts, aerial transect counts from low-flying aircrafts have recently been established within the Seabirds at Sea Program. Two examples shall illustrate the possibilities for analyses. First, the development of the summer distribution of Lesser Black-backed Gulls Larus fuscus in the German Bight (North Sea) from 1992 to 2002 was investigated. Second, data sets from a longer-term study in a well-studied sea area south-east of Helgoland were analysed. Although a permanent establishment of the German Seabirds at Sea Program has not been achieved yet, the current perspectives can be considered to be very good.

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