{"id":35715,"date":"2022-06-16T15:36:03","date_gmt":"2022-06-16T13:36:03","guid":{"rendered":"https:\/\/foretnature.be\/?post_type=resume-foret-mail&p=35715"},"modified":"2022-06-16T15:36:03","modified_gmt":"2022-06-16T13:36:03","slug":"migrer-oui-mais-a-quel-cout","status":"publish","type":"resume-foret-mail","link":"https:\/\/foretnature.be\/en\/resume-foret-mail\/migrer-oui-mais-a-quel-cout\/","title":{"rendered":"Migrer oui, mais \u00e0 quel co\u00fbt ?"},"content":{"rendered":"

Les connectivit\u00e9s migratoires des oiseaux sont des ph\u00e9nom\u00e8nes encore peu connus. Il s\u2019agit des liens cr\u00e9\u00e9s, entre les individus et les populations, \u00e0 l\u2019issue des mouvements migratoires (choix des sites d\u2019hivernation, choix des routes migratoires\u2026). Pour tenter d\u2019approfondir cette th\u00e9matique, des chercheurs ont cr\u00e9\u00e9 un simulateur (ORSIM) de migrations bas\u00e9 sur l\u2019\u00e9conomie d\u2019\u00e9nergie n\u00e9cessaire pour les d\u00e9placements des oiseaux migrateurs tout en prenant en consid\u00e9ration les concurrences intrasp\u00e9cifiques pour l\u2019acquisition des ressources \u00e9nerg\u00e9tiques.<\/p>\n

D\u2019autres recherches avaient d\u00e9j\u00e0 permis de mettre en \u00e9vidence l\u2019importance de l\u2019efficacit\u00e9 \u00e9nerg\u00e9tique \u00e0 une \u00e9chelle intersp\u00e9cifique mais celle-ci montre son poids \u00e0 l\u2019\u00e9chelle intrasp\u00e9cifique puisque ce simulateur est capable de reproduire assez fid\u00e8lement les r\u00e9sultats empiriques de migrations malgr\u00e9 le peu de variables qu\u2019il prend en compte. De nombreuses am\u00e9liorations (h\u00e9ritage g\u00e9n\u00e9tique et culturel, modification des climats, vent, routes complexes,…) doivent \u00eatre apport\u00e9es au simulateur pour coller encore mieux avec la complexit\u00e9 de la r\u00e9alit\u00e9. Quoiqu\u2019il arrive, ces r\u00e9sultats permettent de mieux orienter les futurs travaux visant \u00e0 comprendre les ph\u00e9nom\u00e8nes migratoires des oiseaux tout en laissant la porte ouverte \u00e0 l\u2019\u00e9tude d\u2019autres esp\u00e8ces.<\/p>","protected":false},"excerpt":{"rendered":"

Les connectivit\u00e9s migratoires des oiseaux sont des ph\u00e9nom\u00e8nes encore peu connus. Il s\u2019agit des liens cr\u00e9\u00e9s, entre les individus et les populations, \u00e0 l\u2019issue des mouvements migratoires (choix des sites d\u2019hivernation, choix des routes migratoires\u2026). Pour tenter d\u2019approfondir cette th\u00e9matique, des chercheurs ont cr\u00e9\u00e9 un simulateur (ORSIM) de migrations bas\u00e9 sur l\u2019\u00e9conomie d\u2019\u00e9nergie n\u00e9cessaire pour […]<\/p>","protected":false},"featured_media":0,"template":"","categories":[50],"acf":[],"yoast_head":"\nMigrer oui, mais \u00e0 quel co\u00fbt ? - For\u00eat.Nature<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/foretnature.be\/en\/resume-foret-mail\/migrer-oui-mais-a-quel-cout\/\" \/>\n<meta property=\"og:locale\" content=\"en_GB\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Migrer oui, mais \u00e0 quel co\u00fbt ? - For\u00eat.Nature\" \/>\n<meta property=\"og:description\" content=\"Les connectivit\u00e9s migratoires des oiseaux sont des ph\u00e9nom\u00e8nes encore peu connus. Il s\u2019agit des liens cr\u00e9\u00e9s, entre les individus et les populations, \u00e0 l\u2019issue des mouvements migratoires (choix des sites d\u2019hivernation, choix des routes migratoires\u2026). 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