{"id":38411,"date":"2023-01-13T15:28:10","date_gmt":"2023-01-13T14:28:10","guid":{"rendered":"https:\/\/foretnature.be\/?post_type=resume-foret-mail&#038;p=38411"},"modified":"2023-01-13T15:28:10","modified_gmt":"2023-01-13T14:28:10","slug":"le-chene-sessile-recommande-sur-les-sites-affectes-par-la-secheresse","status":"publish","type":"resume-foret-mail","link":"https:\/\/foretnature.be\/en\/resume-foret-mail\/le-chene-sessile-recommande-sur-les-sites-affectes-par-la-secheresse\/","title":{"rendered":"Le ch\u00eane sessile recommand\u00e9 sur les sites affect\u00e9s par la s\u00e9cheresse"},"content":{"rendered":"<p>On sait que la capacit\u00e9 de croissance des arbres est affect\u00e9e par le d\u00e9ficit en eau et les esp\u00e8ces foresti\u00e8res r\u00e9agissent diff\u00e9remment \u00e0 ce d\u00e9ficit. Alors que les esp\u00e8ces sensibles \u00e0 la s\u00e9cheresse risquent de perdre leur habitat \u00e0 cause des changements climatiques, les esp\u00e8ces plus tol\u00e9rantes \u00e0 la s\u00e9cheresse, telles que les ch\u00eanes, peuvent b\u00e9n\u00e9ficier du changement climatique gr\u00e2ce \u00e0 une force concurrentielle accrue.<\/p>\n<p>Une \u00e9tude scientifique men\u00e9e dans la Saxe en Allemagne a \u00e9tudi\u00e9 les r\u00e9ponses d\u2019adaptabilit\u00e9 au stress hydrique du ch\u00eane sessile sur six diff\u00e9rents sites secs. Divers param\u00e8tres ont \u00e9t\u00e9 suivis sur les graines, plantules et racines : la longueur de la tige, la longueur des racines, le diam\u00e8tre du collet et les performances de la biomasse s\u00e8che a\u00e9rienne et souterraine.<\/p>\n<p>D&rsquo;apr\u00e8s les r\u00e9sultats, les ch\u00eanes ont pr\u00e9sent\u00e9 des taux de croissance diff\u00e9rents \u00e0 chaque stade de d\u00e9veloppement, de la graine jusqu&rsquo;\u00e0 la formation de la plantule. Les six sites ont \u00e9t\u00e9 class\u00e9s en fonction de la taille des graines et du d\u00e9veloppement des plantules avant et apr\u00e8s le traitement de la s\u00e9cheresse. Les r\u00e9sultats indiquent que les plantes n&rsquo;ont pas maintenu ces classements : les graines les plus lourdes n&rsquo;ont pas n\u00e9cessairement produit les plantules les plus hautes, les graines les plus petites n&rsquo;ont pas produit les plantules les plus petites. En conclusion, il s\u2019av\u00e8re que le d\u00e9veloppement des semis ne d\u00e9pend pas du poids des graines. Les plantules ont montr\u00e9 des r\u00e9ponses relativement tol\u00e9rantes \u00e0 la s\u00e9cheresse. Le ch\u00eane sessile pourrait donc \u00eatre indiqu\u00e9 pour les activit\u00e9s sylvicoles dans les zones affect\u00e9es par la s\u00e9cheresse.<\/p>","protected":false},"excerpt":{"rendered":"<p>On sait que la capacit\u00e9 de croissance des arbres est affect\u00e9e par le d\u00e9ficit en eau et les esp\u00e8ces foresti\u00e8res r\u00e9agissent diff\u00e9remment \u00e0 ce d\u00e9ficit. Alors que les esp\u00e8ces sensibles \u00e0 la s\u00e9cheresse risquent de perdre leur habitat \u00e0 cause des changements climatiques, les esp\u00e8ces plus tol\u00e9rantes \u00e0 la s\u00e9cheresse, telles que les ch\u00eanes, peuvent [&hellip;]<\/p>","protected":false},"featured_media":38418,"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>Le ch\u00eane sessile recommand\u00e9 sur les sites affect\u00e9s par la s\u00e9cheresse - 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\/le-chene-sessile-recommande-sur-les-sites-affectes-par-la-secheresse\/\" \/>\n<meta property=\"og:locale\" content=\"en_GB\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Le ch\u00eane sessile recommand\u00e9 sur les sites affect\u00e9s par la s\u00e9cheresse - For\u00eat.Nature\" \/>\n<meta property=\"og:description\" content=\"On sait que la capacit\u00e9 de croissance des arbres est affect\u00e9e par le d\u00e9ficit en eau et les esp\u00e8ces foresti\u00e8res r\u00e9agissent diff\u00e9remment \u00e0 ce d\u00e9ficit. 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