La Tour du Valat

Institut de recherche pour la conservation des zones humides méditerranéennes

Titre :	Spring migration phenology of birds in the Northern Prairie region is correlated with local climate change
Auteurs :	David L. Swanson, Auteur ; Jeffrey S. Palmer, Auteur
Type de document :	Article
Dans :	Journal of Field Ornithology (80(4) DEC 2009)
Article en page(s) :	351-363
Langues:	Anglais
Résumé :	In apparent response to recent periods of global warming, some migratory birds now arrive earlier at stopover sites and breeding grounds. However, the effects of this warming on arrival times vary among locations and species. Migration timing is generally correlated with temperature, with earlier arrival during warm years than during cold years, so local variation in climate change might produce different effects on migration phenology in different geographic regions. We examined trends in first spring arrival dates (FADs) for 44 species of common migrant birds in South Dakota (1971-2006) and Minnesota (1964-2005) using observations compiled by South Dakota and Minnesota Ornithologists' Unions. We found significant trends in FAD over time for

Lundi , mardi et jeudi de 9h à 12h et de 13h à 17h00 : ouverture au public ...