La Tour du Valat

Institut de recherche pour la conservation des zones humides méditerranéennes

Titre :	California Gull (Larus californicus) Space Use and Timing of Movements in Relation to Landfills and Breeding Colonies (2018)
Auteurs :	Joshua T. Ackerman, Auteur ; Sarah H. Peterson, Auteur ; Danika C. Tsao, Auteur ; John Y. Takekawa, Auteur
Type de document :	Article
Dans :	Waterbirds (41(4) December, 2018)
Article en page(s) :	384-400
Résumé :	Expanding gull (Laridae) populations throughout the world have been attributed to the availability of anthropogenic food subsidies. The influence of landfills on California Gull (Larus californicus) space use and the timing of their movements was evaluated in San Francisco Bay, California, USA. Using radio telemetry 108 California Gulls were tracked, > 7,000 locations were recorded, and > 1 million detections were obtained at automated logger systems placed at the two main landfills and three major breeding colonies. Population home range (31-35 km(2)) and core use areas (2-3 km(2)) overlapped landfills and colonies, and expanded after breeding. California Gull attendance at landfills (1.6-19.0 km from colonies) increased throughout breeding and post-breeding, whereas attendance at colonies was low during pre-breeding (20%-40% per day), increased during breeding (60%-80% per day), and declined into and during post-breeding (

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