La Tour du Valat

Institut de recherche pour la conservation des zones humides méditerranéennes

Titre :	Population densities of birds in Orsted Dal, NE Greenland, 2009
Auteurs :	Hans Meltofte, Auteur ; Lars Dinesen, Auteur
Type de document :	Article
Dans :	Dansk Ornitologisk Forenings Tidsskrift (104(2) 2010)
Article en page(s) :	59-72
Langues:	Anglais
Résumé :	During June 2009, the bird populations in two study areas in Orsted Dal, northern Jameson Land in NE Greenland, were censused using the "rapid assessment" method where all "territory holding" pairs and individuals are considered part of the local population. The method provided significantly higher densities of waders (Charadrii) than found in the valley at censuses in July 1974. This is interpreted as a result of all non- and failed breeders having left their territories before the July census. Yet, numbers of Ruddy Turnstones Arenaria interpres may have decreased since then, while the nesting population of Pink-footed Geese Anser brachyrhynchus has increased quite considerably. Also, arrival and egg-laying in Barnacle Branta leucopsis and Pink-footed geese appears to have advanced as compared to previous decades, an advancement interpreted as the result of climate amelioration.

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