{"id":34199,"date":"2021-09-10T11:45:00","date_gmt":"2021-09-10T09:45:00","guid":{"rendered":"https:\/\/foretnature.be\/resume-foret-mail\/la-reaction-des-peupliers-face-a-labroutissement\/"},"modified":"2021-09-10T11:45:00","modified_gmt":"2021-09-10T09:45:00","slug":"la-reaction-des-peupliers-face-a-labroutissement","status":"publish","type":"resume-foret-mail","link":"https:\/\/foretnature.be\/en\/resume-foret-mail\/la-reaction-des-peupliers-face-a-labroutissement\/","title":{"rendered":"La r\u00e9action des peupliers face \u00e0 l\u2019abroutissement"},"content":{"rendered":"

\u00a9 caocao191\/fotolia
\nDes chercheurs am\u00e9ricains ont \u00e9tudi\u00e9 l\u2019impact \u00e0 long terme de l\u2019abroutissement sur le peuplier tremble. Ils ont \u00e9valu\u00e9 les diff\u00e9rentes strat\u00e9gies de r\u00e9sistance ou de tol\u00e9rance en passant \u00e0 la loupe les feuilles (morphologie, photosynth\u00e8se, chimie) et en mesurant la croissance des tiges 1, 2, 3 et 26 ans apr\u00e8s r\u00e9g\u00e9n\u00e9ration d\u2019une part sous cl\u00f4ture et d\u2019autre part sans.
\nApr\u00e8s 3 ans, les peupliers non prot\u00e9g\u00e9s ont des feuilles 50 % plus petites et ont une concentration en tanins 33 % plus \u00e9lev\u00e9e. M\u00eame apr\u00e8s 26 ans, les tiges abrouties ont une croissance en circonf\u00e9rence plus faible et restent en-dessous du seuil critique de 2 m, consid\u00e9r\u00e9 comme n\u00e9cessaire pour \u00e9chapper \u00e0 l\u2019abroutissement.\u00a0A l\u2019oppos\u00e9, les tiges qui ont grandi dans la cl\u00f4ture atteignent d\u00e9j\u00e0 6 m de hauteur.
\nBien que les adaptations anatomiques et chimiques des feuilles soient cons\u00e9quentes, elles n\u2019interf\u00e8rent pas avec la photosynth\u00e8se.\u00a0L\u2019abroutissement incite donc les tiges \u00e0 investir dans les d\u00e9fenses chimiques et anatomiques \u00e0 la fois par l\u2019augmentation de leur concentration en tanins et par la r\u00e9duction de leurs feuilles.
\nRhodes A. C., Anderson V., St Clair S. B. (2017). Ungulate herbivory alters leaf functional traits and recruitment of regenerating aspen. Tree Physiology\u00a0n\u00b037. p.\u00a0402-413.\u00a0doi: 10.1093\/treephys\/tpx015<\/p>","protected":false},"excerpt":{"rendered":"

\u00a9 caocao191\/fotolia Des chercheurs am\u00e9ricains ont \u00e9tudi\u00e9 l\u2019impact \u00e0 long terme de l\u2019abroutissement sur le peuplier tremble. Ils ont \u00e9valu\u00e9 les diff\u00e9rentes strat\u00e9gies de r\u00e9sistance ou de tol\u00e9rance en passant \u00e0 la loupe les feuilles (morphologie, photosynth\u00e8se, chimie) et en mesurant la croissance des tiges 1, 2, 3 et 26 ans apr\u00e8s r\u00e9g\u00e9n\u00e9ration d\u2019une part […]<\/p>","protected":false},"featured_media":0,"template":"","categories":[50],"acf":[],"yoast_head":"\nLa r\u00e9action des peupliers face \u00e0 l\u2019abroutissement - 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\/la-reaction-des-peupliers-face-a-labroutissement\/\" \/>\n<meta property=\"og:locale\" content=\"en_GB\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"La r\u00e9action des peupliers face \u00e0 l\u2019abroutissement - For\u00eat.Nature\" \/>\n<meta property=\"og:description\" content=\"\u00a9 caocao191\/fotolia Des chercheurs am\u00e9ricains ont \u00e9tudi\u00e9 l\u2019impact \u00e0 long terme de l\u2019abroutissement sur le peuplier tremble. Ils ont \u00e9valu\u00e9 les diff\u00e9rentes strat\u00e9gies de r\u00e9sistance ou de tol\u00e9rance en passant \u00e0 la loupe les feuilles (morphologie, photosynth\u00e8se, chimie) et en mesurant la croissance des tiges 1, 2, 3 et 26 ans apr\u00e8s r\u00e9g\u00e9n\u00e9ration d\u2019une part […]\" \/>\n<meta property=\"og:url\" content=\"https:\/\/foretnature.be\/en\/resume-foret-mail\/la-reaction-des-peupliers-face-a-labroutissement\/\" \/>\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\/resume-foret-mail\/la-reaction-des-peupliers-face-a-labroutissement\/\",\"url\":\"https:\/\/foretnature.be\/resume-foret-mail\/la-reaction-des-peupliers-face-a-labroutissement\/\",\"name\":\"La r\u00e9action des peupliers face \u00e0 l\u2019abroutissement - For\u00eat.Nature\",\"isPartOf\":{\"@id\":\"https:\/\/foretnature.be\/en\/#website\"},\"datePublished\":\"2021-09-10T09:45:00+00:00\",\"dateModified\":\"2021-09-10T09:45:00+00:00\",\"breadcrumb\":{\"@id\":\"https:\/\/foretnature.be\/resume-foret-mail\/la-reaction-des-peupliers-face-a-labroutissement\/#breadcrumb\"},\"inLanguage\":\"en-GB\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\/\/foretnature.be\/resume-foret-mail\/la-reaction-des-peupliers-face-a-labroutissement\/\"]}]},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\/\/foretnature.be\/resume-foret-mail\/la-reaction-des-peupliers-face-a-labroutissement\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Home\",\"item\":\"https:\/\/foretnature.be\/en\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"La r\u00e9action des peupliers face \u00e0 l\u2019abroutissement\"}]},{\"@type\":\"WebSite\",\"@id\":\"https:\/\/foretnature.be\/en\/#website\",\"url\":\"https:\/\/foretnature.be\/en\/\",\"name\":\"For\u00eat.Nature\",\"description\":\"Une \u00e9quipe technique au service de la for\u00eat\",\"publisher\":{\"@id\":\"https:\/\/foretnature.be\/en\/#organization\"},\"potentialAction\":[{\"@type\":\"SearchAction\",\"target\":{\"@type\":\"EntryPoint\",\"urlTemplate\":\"https:\/\/foretnature.be\/en\/?s={search_term_string}\"},\"query-input\":\"required name=search_term_string\"}],\"inLanguage\":\"en-GB\"},{\"@type\":\"Organization\",\"@id\":\"https:\/\/foretnature.be\/en\/#organization\",\"name\":\"For\u00eat.Nature\",\"url\":\"https:\/\/foretnature.be\/en\/\",\"logo\":{\"@type\":\"ImageObject\",\"inLanguage\":\"en-GB\",\"@id\":\"https:\/\/foretnature.be\/en\/#\/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\/en\/#\/schema\/logo\/image\/\"}}]}<\/script>\n<!-- \/ Yoast SEO plugin. -->","yoast_head_json":{"title":"La r\u00e9action des peupliers face \u00e0 l\u2019abroutissement - 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\/la-reaction-des-peupliers-face-a-labroutissement\/","og_locale":"en_GB","og_type":"article","og_title":"La r\u00e9action des peupliers face \u00e0 l\u2019abroutissement - For\u00eat.Nature","og_description":"\u00a9 caocao191\/fotolia Des chercheurs am\u00e9ricains ont \u00e9tudi\u00e9 l\u2019impact \u00e0 long terme de l\u2019abroutissement sur le peuplier tremble. Ils ont \u00e9valu\u00e9 les diff\u00e9rentes strat\u00e9gies de r\u00e9sistance ou de tol\u00e9rance en passant \u00e0 la loupe les feuilles (morphologie, photosynth\u00e8se, chimie) et en mesurant la croissance des tiges 1, 2, 3 et 26 ans apr\u00e8s r\u00e9g\u00e9n\u00e9ration d\u2019une part […]","og_url":"https:\/\/foretnature.be\/en\/resume-foret-mail\/la-reaction-des-peupliers-face-a-labroutissement\/","og_site_name":"For\u00eat.Nature","twitter_card":"summary_large_image","twitter_misc":{"Estimated reading time":"1 minute"},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"WebPage","@id":"https:\/\/foretnature.be\/resume-foret-mail\/la-reaction-des-peupliers-face-a-labroutissement\/","url":"https:\/\/foretnature.be\/resume-foret-mail\/la-reaction-des-peupliers-face-a-labroutissement\/","name":"La r\u00e9action des peupliers face \u00e0 l\u2019abroutissement - For\u00eat.Nature","isPartOf":{"@id":"https:\/\/foretnature.be\/en\/#website"},"datePublished":"2021-09-10T09:45:00+00:00","dateModified":"2021-09-10T09:45:00+00:00","breadcrumb":{"@id":"https:\/\/foretnature.be\/resume-foret-mail\/la-reaction-des-peupliers-face-a-labroutissement\/#breadcrumb"},"inLanguage":"en-GB","potentialAction":[{"@type":"ReadAction","target":["https:\/\/foretnature.be\/resume-foret-mail\/la-reaction-des-peupliers-face-a-labroutissement\/"]}]},{"@type":"BreadcrumbList","@id":"https:\/\/foretnature.be\/resume-foret-mail\/la-reaction-des-peupliers-face-a-labroutissement\/#breadcrumb","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https:\/\/foretnature.be\/en\/"},{"@type":"ListItem","position":2,"name":"La r\u00e9action des peupliers face \u00e0 l\u2019abroutissement"}]},{"@type":"WebSite","@id":"https:\/\/foretnature.be\/en\/#website","url":"https:\/\/foretnature.be\/en\/","name":"For\u00eat.Nature","description":"Une \u00e9quipe technique au service de la for\u00eat","publisher":{"@id":"https:\/\/foretnature.be\/en\/#organization"},"potentialAction":[{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https:\/\/foretnature.be\/en\/?s={search_term_string}"},"query-input":"required name=search_term_string"}],"inLanguage":"en-GB"},{"@type":"Organization","@id":"https:\/\/foretnature.be\/en\/#organization","name":"For\u00eat.Nature","url":"https:\/\/foretnature.be\/en\/","logo":{"@type":"ImageObject","inLanguage":"en-GB","@id":"https:\/\/foretnature.be\/en\/#\/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\/en\/#\/schema\/logo\/image\/"}}]}},"_links":{"self":[{"href":"https:\/\/foretnature.be\/en\/wp-json\/wp\/v2\/resume-foret-mail\/34199"}],"collection":[{"href":"https:\/\/foretnature.be\/en\/wp-json\/wp\/v2\/resume-foret-mail"}],"about":[{"href":"https:\/\/foretnature.be\/en\/wp-json\/wp\/v2\/types\/resume-foret-mail"}],"version-history":[{"count":0,"href":"https:\/\/foretnature.be\/en\/wp-json\/wp\/v2\/resume-foret-mail\/34199\/revisions"}],"wp:attachment":[{"href":"https:\/\/foretnature.be\/en\/wp-json\/wp\/v2\/media?parent=34199"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/foretnature.be\/en\/wp-json\/wp\/v2\/categories?post=34199"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}