La Tour du Valat

Institut de recherche pour la conservation des zones humides méditerranéennes

Titre :	Upwind or downwind: the spring arrival of Arctic Terns Sterna paradisaea at Troms, north Norway (2016)
Titre original:	Upwind or downwind
Auteurs :	Robert T. Barrett, Auteur
Type de document :	Article
Dans :	Ringing & Migration (31(1) July 13, 2016)
Article en page(s) :	23-29
Résumé :	Arctic Terns Sterna paradisaea have a record long migration between their breeding grounds in the Arctic and wintering areas in the Antarctic. Nevertheless, return dates to north Norway were remarkably constant over a 35-year period (1981–2015), with Arctic Terns arriving in Troms within a 13-day time window in mid to late May. Since 1993, arrival dates have advanced by about four days. No relationships were found between arrival dates and large-scale weather proxies such as the North Atlantic Oscillation or sea temperatures, but when terns were approaching Troms, headwinds tended to delay arrivals whereas tailwinds advanced them.
En ligne :	http://www.tandfonline.com/doi/full/10.1080/03078698.2016.1190610

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