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Institut de recherche pour la conservation des zones humides méditerranéennes

Titre :	Habitat use by wintering Steller's Eiders Polysticta stelleri in northern Norway
Auteurs :	J. O. Bustnes, Auteur ; G. H. Systad, Auteur
Type de document :	Article
Dans :	Ardea (89(2) 2001)
Article en page(s) :	267-274
Résumé :	Habitat use of Steller's Elders Polysticta stelleri was studied in Varangerfjord, northern Norway, during three winter periods (November, January and April) in 1996/97. We partitioned habitats based on water depth and benthic conditions, and compared the benthic characteristics in known feeding areas to nearby areas avoided by Steller's Elders. On average 88% of the birds were in natural habitats, outside of harbours. Mean water depth at feeding areas varied from 3.7 m in November to 2.5 m in April. Overall 89% of elders foraged by diving at locations where water depths were less than 5 m. Steller's Elders foraged in areas with underwater vegetation, predominantly in kelp beds. Two factors were positively associated (P

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