{"id":34825,"date":"2021-09-15T11:30:55","date_gmt":"2021-09-15T09:30:55","guid":{"rendered":"https:\/\/foretnature.be\/?post_type=resume-foret-mail&#038;p=34825"},"modified":"2021-09-15T11:30:55","modified_gmt":"2021-09-15T09:30:55","slug":"leffet-de-priorite-pour-limiter-lexpansion-du-buddleia","status":"publish","type":"resume-foret-mail","link":"https:\/\/foretnature.be\/en\/resume-foret-mail\/leffet-de-priorite-pour-limiter-lexpansion-du-buddleia\/","title":{"rendered":"L\u2019effet de priorit\u00e9 pour limiter l\u2019expansion du buddleia"},"content":{"rendered":"<p class=\"text-build-content\" data-testid=\"uTHJcSILPD\">L\u2019arbre \u00e0 papillons (<i>Buddleja davidii<\/i>) est un arbuste envahissant des terres remani\u00e9es. Il colonise ces milieux de fa\u00e7on tr\u00e8s efficace gr\u00e2ce \u00e0 ses semences l\u00e9g\u00e8res et nombreuses, sa capacit\u00e9 \u00e0 se reproduire tr\u00e8s t\u00f4t, son taux de croissance \u00e9lev\u00e9 et son adaptabilit\u00e9 \u00e0 de nombreuses conditions \u00e9cologiques. Face \u00e0 cette esp\u00e8ce, il est d\u2019ordinaire pr\u00e9conis\u00e9 de r\u00e9aliser un \u00e9t\u00eatage des arbustes avant que les graines n\u2019arrivent \u00e0 maturit\u00e9. L\u2019arrachage n\u2019est quant \u00e0 lui recommand\u00e9 qu\u2019en d\u00e9but d\u2019invasion sur de tr\u00e8s jeunes plants.<\/p>\n<p class=\"text-build-content\" data-testid=\"uTHJcSILPD\">Une autre solution a \u00e9t\u00e9 explor\u00e9e, l\u2019utilisation de l\u2019effet de priorit\u00e9. Pour des conditions environnementales identiques et un m\u00eame ensemble d\u2019esp\u00e8ces, l\u2019ordre d\u2019arriv\u00e9e de ces derni\u00e8res sur le milieu va influencer la composition et la structure de la communaut\u00e9. Les premi\u00e8res arriv\u00e9es auront un avantage sur les autres. Ainsi, m\u00eame un individu moins concurrent pourra avoir ses chances face \u00e0 un autre plus comp\u00e9titif, s\u2019il arrive suffisamment t\u00f4t pour s\u2019implanter correctement. Dans le cas du buddleia, il a \u00e9t\u00e9 d\u00e9montr\u00e9 que cette esp\u00e8ce \u00e9tait tr\u00e8s sensible \u00e0 l\u2019effet de priorit\u00e9 : son taux de germination est de 79 % lorsqu\u2019il pousse seul, 69 % lorsqu\u2019il est sem\u00e9 en m\u00eame temps des esp\u00e8ces locales et seulement 33 % lorsqu\u2019il est sem\u00e9 apr\u00e8s celles-ci. Apr\u00e8s la question de la germination, se pose celle de la survie des plantules et les r\u00e9sultats montrent qu\u2019en conditions naturelles, le taux de survie peut tendre vers z\u00e9ro. La mise en place pr\u00e9coce de semis d\u2019esp\u00e8ces locales peut donc \u00eatre un moyen efficace de lutte contre la propagation du buddleia.<\/p>","protected":false},"excerpt":{"rendered":"<p>L\u2019arbre \u00e0 papillons (Buddleja davidii) est un arbuste envahissant des terres remani\u00e9es. Il colonise ces milieux de fa\u00e7on tr\u00e8s efficace gr\u00e2ce \u00e0 ses semences l\u00e9g\u00e8res et nombreuses, sa capacit\u00e9 \u00e0 se reproduire tr\u00e8s t\u00f4t, son taux de croissance \u00e9lev\u00e9 et son adaptabilit\u00e9 \u00e0 de nombreuses conditions \u00e9cologiques. Face \u00e0 cette esp\u00e8ce, il est d\u2019ordinaire pr\u00e9conis\u00e9 [&hellip;]<\/p>","protected":false},"featured_media":0,"template":"","categories":[50],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v23.2 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>L\u2019effet de priorit\u00e9 pour limiter l\u2019expansion du buddleia - 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\/leffet-de-priorite-pour-limiter-lexpansion-du-buddleia\/\" \/>\n<meta property=\"og:locale\" content=\"en_GB\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"L\u2019effet de priorit\u00e9 pour limiter l\u2019expansion du buddleia - For\u00eat.Nature\" \/>\n<meta property=\"og:description\" content=\"L\u2019arbre \u00e0 papillons (Buddleja davidii) est un arbuste envahissant des terres remani\u00e9es. Il colonise ces milieux de fa\u00e7on tr\u00e8s efficace gr\u00e2ce \u00e0 ses semences l\u00e9g\u00e8res et nombreuses, sa capacit\u00e9 \u00e0 se reproduire tr\u00e8s t\u00f4t, son taux de croissance \u00e9lev\u00e9 et son adaptabilit\u00e9 \u00e0 de nombreuses conditions \u00e9cologiques. 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Il colonise ces milieux de fa\u00e7on tr\u00e8s efficace gr\u00e2ce \u00e0 ses semences l\u00e9g\u00e8res et nombreuses, sa capacit\u00e9 \u00e0 se reproduire tr\u00e8s t\u00f4t, son taux de croissance \u00e9lev\u00e9 et son adaptabilit\u00e9 \u00e0 de nombreuses conditions \u00e9cologiques. 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