{"id":34452,"date":"2021-09-10T11:45:43","date_gmt":"2021-09-10T09:45:43","guid":{"rendered":"https:\/\/foretnature.be\/resume-foret-mail\/lapparition-dune-nouvelle-maladie-menace-les-hetres\/"},"modified":"2021-09-10T11:45:43","modified_gmt":"2021-09-10T09:45:43","slug":"lapparition-dune-nouvelle-maladie-menace-les-hetres","status":"publish","type":"resume-foret-mail","link":"https:\/\/foretnature.be\/en\/resume-foret-mail\/lapparition-dune-nouvelle-maladie-menace-les-hetres\/","title":{"rendered":"L&rsquo;apparition d&rsquo;une nouvelle maladie menace les h\u00eatres"},"content":{"rendered":"<p>Une nouvelle maladie qui s&rsquo;attaque aux h\u00eatres (Fagus grandifolia) a \u00e9t\u00e9 d\u00e9couverte en 2012 dans le Nord-Est des \u00c9tats-Unis et au Canada. La maladie s&rsquo;est rapidement dispers\u00e9e et touche d\u00e9sormais de nombreux massifs forestiers.<br \/>\nLes sympt\u00f4mes se manifestent d&rsquo;abord par des bandes noires situ\u00e9es entre les nervures des feuilles et particuli\u00e8rement \u00e0 la base des houppiers. Ensuite, les feuilles noires et frip\u00e9es s&rsquo;\u00e9paississent et ont une texture similaire au cuir. Enfin, plus aucune feuille n&rsquo;est produite ce qui conduit \u00e0 la mort de l&rsquo;arbre en quelques ann\u00e9es.<br \/>\nDurant la phase de propagation des sympt\u00f4mes, la composition de la canop\u00e9e est fortement perturb\u00e9e en raison de la taille r\u00e9duite des feuilles, ce qui conduit \u00e0 des changements de composition du sous-bois mais aussi de la dynamique foresti\u00e8re.<br \/>\nMalheureusement, ces sympt\u00f4mes ont rapidement \u00e9t\u00e9 d\u00e9couverts sur les h\u00eatres europ\u00e9ens (Fagus sylvatica) dans les p\u00e9pini\u00e8res du Nord-Est des \u00c9tats-Unis !<br \/>\nL&rsquo;agent responsable de ce d\u00e9p\u00e9rissement n&rsquo;est pas encore connu mais les sympt\u00f4mes sont similaires \u00e0 d&rsquo;autres maladies caus\u00e9es par des agents biotiques (champignons, virus, bact\u00e9ries, etc.). \u00c9tant donn\u00e9 que le pathog\u00e8ne responsable n&rsquo;est pas encore clairement identifi\u00e9, aucune recommandation ne peut \u00eatre donn\u00e9e aux gestionnaires pour \u00e9viter la propagation de la maladie.<br \/>\nSchlossmacher M. Beech leaf disease affects American trees and raises concern for European forests. Resilience Blog. 04\/04\/19.<\/p>","protected":false},"excerpt":{"rendered":"<p>Une nouvelle maladie qui s&rsquo;attaque aux h\u00eatres (Fagus grandifolia) a \u00e9t\u00e9 d\u00e9couverte en 2012 dans le Nord-Est des \u00c9tats-Unis et au Canada. La maladie s&rsquo;est rapidement dispers\u00e9e et touche d\u00e9sormais de nombreux massifs forestiers. Les sympt\u00f4mes se manifestent d&rsquo;abord par des bandes noires situ\u00e9es entre les nervures des feuilles et particuli\u00e8rement \u00e0 la base des [&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&#039;apparition d&#039;une nouvelle maladie menace les h\u00eatres - 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\/lapparition-dune-nouvelle-maladie-menace-les-hetres\/\" \/>\n<meta property=\"og:locale\" content=\"en_GB\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"L&#039;apparition d&#039;une nouvelle maladie menace les h\u00eatres - For\u00eat.Nature\" \/>\n<meta property=\"og:description\" content=\"Une nouvelle maladie qui s&rsquo;attaque aux h\u00eatres (Fagus grandifolia) a \u00e9t\u00e9 d\u00e9couverte en 2012 dans le Nord-Est des \u00c9tats-Unis et au Canada. La maladie s&rsquo;est rapidement dispers\u00e9e et touche d\u00e9sormais de nombreux massifs forestiers. Les sympt\u00f4mes se manifestent d&rsquo;abord par des bandes noires situ\u00e9es entre les nervures des feuilles et particuli\u00e8rement \u00e0 la base des [&hellip;]\" \/>\n<meta property=\"og:url\" content=\"https:\/\/foretnature.be\/en\/resume-foret-mail\/lapparition-dune-nouvelle-maladie-menace-les-hetres\/\" \/>\n<meta property=\"og:site_name\" content=\"For\u00eat.Nature\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Estimated reading time\" \/>\n\t<meta name=\"twitter:data1\" content=\"1 minute\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"WebPage\",\"@id\":\"https:\/\/foretnature.be\/en\/resume-foret-mail\/lapparition-dune-nouvelle-maladie-menace-les-hetres\/\",\"url\":\"https:\/\/foretnature.be\/en\/resume-foret-mail\/lapparition-dune-nouvelle-maladie-menace-les-hetres\/\",\"name\":\"L'apparition d'une nouvelle maladie menace les h\u00eatres - For\u00eat.Nature\",\"isPartOf\":{\"@id\":\"https:\/\/foretnature.be\/#website\"},\"datePublished\":\"2021-09-10T09:45:43+00:00\",\"dateModified\":\"2021-09-10T09:45:43+00:00\",\"breadcrumb\":{\"@id\":\"https:\/\/foretnature.be\/en\/resume-foret-mail\/lapparition-dune-nouvelle-maladie-menace-les-hetres\/#breadcrumb\"},\"inLanguage\":\"en-GB\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\/\/foretnature.be\/en\/resume-foret-mail\/lapparition-dune-nouvelle-maladie-menace-les-hetres\/\"]}]},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\/\/foretnature.be\/en\/resume-foret-mail\/lapparition-dune-nouvelle-maladie-menace-les-hetres\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Home\",\"item\":\"https:\/\/foretnature.be\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"L&rsquo;apparition d&rsquo;une nouvelle maladie menace les h\u00eatres\"}]},{\"@type\":\"WebSite\",\"@id\":\"https:\/\/foretnature.be\/#website\",\"url\":\"https:\/\/foretnature.be\/\",\"name\":\"For\u00eat.Nature\",\"description\":\"Une \u00e9quipe technique au service de la for\u00eat\",\"publisher\":{\"@id\":\"https:\/\/foretnature.be\/#organization\"},\"potentialAction\":[{\"@type\":\"SearchAction\",\"target\":{\"@type\":\"EntryPoint\",\"urlTemplate\":\"https:\/\/foretnature.be\/?s={search_term_string}\"},\"query-input\":\"required name=search_term_string\"}],\"inLanguage\":\"en-GB\"},{\"@type\":\"Organization\",\"@id\":\"https:\/\/foretnature.be\/#organization\",\"name\":\"For\u00eat.Nature\",\"url\":\"https:\/\/foretnature.be\/\",\"logo\":{\"@type\":\"ImageObject\",\"inLanguage\":\"en-GB\",\"@id\":\"https:\/\/foretnature.be\/#\/schema\/logo\/image\/\",\"url\":\"https:\/\/foretnature.be\/wp-content\/uploads\/2021\/01\/logoFOblanc.png\",\"contentUrl\":\"https:\/\/foretnature.be\/wp-content\/uploads\/2021\/01\/logoFOblanc.png\",\"width\":300,\"height\":151,\"caption\":\"For\u00eat.Nature\"},\"image\":{\"@id\":\"https:\/\/foretnature.be\/#\/schema\/logo\/image\/\"}}]}<\/script>\n<!-- \/ Yoast SEO plugin. -->","yoast_head_json":{"title":"L'apparition d'une nouvelle maladie menace les h\u00eatres - For\u00eat.Nature","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"https:\/\/foretnature.be\/en\/resume-foret-mail\/lapparition-dune-nouvelle-maladie-menace-les-hetres\/","og_locale":"en_GB","og_type":"article","og_title":"L'apparition d'une nouvelle maladie menace les h\u00eatres - For\u00eat.Nature","og_description":"Une nouvelle maladie qui s&rsquo;attaque aux h\u00eatres (Fagus grandifolia) a \u00e9t\u00e9 d\u00e9couverte en 2012 dans le Nord-Est des \u00c9tats-Unis et au Canada. La maladie s&rsquo;est rapidement dispers\u00e9e et touche d\u00e9sormais de nombreux massifs forestiers. 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