{"id":9161,"date":"2026-06-08T13:29:55","date_gmt":"2026-06-08T13:29:55","guid":{"rendered":"https:\/\/www.epl-bazas.fr\/Botanique\/?p=9161"},"modified":"2026-06-14T15:44:00","modified_gmt":"2026-06-14T15:44:00","slug":"une-hetraie-relictuelle","status":"publish","type":"post","link":"https:\/\/www.epl-bazas.fr\/Botanique\/2026\/06\/08\/une-hetraie-relictuelle\/","title":{"rendered":"Une H\u00eatraie relictuelle&#8230;"},"content":{"rendered":"\t\t<div data-elementor-type=\"wp-post\" data-elementor-id=\"9161\" class=\"elementor elementor-9161\">\n\t\t\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-01bb38f elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"01bb38f\" data-element_type=\"section\" data-e-type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-251150f\" data-id=\"251150f\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-00bb649 elementor-widget elementor-widget-text-editor\" data-id=\"00bb649\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>dans les gorges de la Douze sur le secteur de Roquefort (40).<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-5d7f00b elementor-widget elementor-widget-image-gallery\" data-id=\"5d7f00b\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"image-gallery.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"elementor-image-gallery\">\n\t\t\t\n<a data-elementor-open-lightbox=\"yes\" 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https:\/\/www.epl-bazas.fr\/Botanique\/wp-content\/uploads\/2026\/06\/20260510_145453-1536x864.jpg 1536w, https:\/\/www.epl-bazas.fr\/Botanique\/wp-content\/uploads\/2026\/06\/20260510_145453-840x473.jpg 840w\" sizes=\"(max-width: 2048px) 100vw, 2048px\" \/><\/a>\n<a data-elementor-open-lightbox=\"yes\" data-elementor-lightbox-slideshow=\"5d7f00b\" data-elementor-lightbox-title=\"20260510_145511\" data-e-action-hash=\"#elementor-action%3Aaction%3Dlightbox%26settings%3DeyJpZCI6OTE3MSwidXJsIjoiaHR0cHM6XC9cL3d3dy5lcGwtYmF6YXMuZnJcL0JvdGFuaXF1ZVwvd3AtY29udGVudFwvdXBsb2Fkc1wvMjAyNlwvMDZcLzIwMjYwNTEwXzE0NTUxMS5qcGciLCJzbGlkZXNob3ciOiI1ZDdmMDBiIn0%3D\" href='https:\/\/www.epl-bazas.fr\/Botanique\/20260510_145511\/'><img loading=\"lazy\" decoding=\"async\" width=\"2048\" height=\"1152\" src=\"https:\/\/www.epl-bazas.fr\/Botanique\/wp-content\/uploads\/2026\/06\/20260510_145511-2048x1152.jpg\" class=\"attachment-2048x2048 size-2048x2048\" alt=\"\" srcset=\"https:\/\/www.epl-bazas.fr\/Botanique\/wp-content\/uploads\/2026\/06\/20260510_145511-2048x1152.jpg 2048w, https:\/\/www.epl-bazas.fr\/Botanique\/wp-content\/uploads\/2026\/06\/20260510_145511-300x169.jpg 300w, https:\/\/www.epl-bazas.fr\/Botanique\/wp-content\/uploads\/2026\/06\/20260510_145511-1024x576.jpg 1024w, https:\/\/www.epl-bazas.fr\/Botanique\/wp-content\/uploads\/2026\/06\/20260510_145511-768x432.jpg 768w, https:\/\/www.epl-bazas.fr\/Botanique\/wp-content\/uploads\/2026\/06\/20260510_145511-1536x864.jpg 1536w, https:\/\/www.epl-bazas.fr\/Botanique\/wp-content\/uploads\/2026\/06\/20260510_145511-840x473.jpg 840w\" sizes=\"(max-width: 2048px) 100vw, 2048px\" \/><\/a>\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-332ca23 elementor-widget elementor-widget-text-editor\" data-id=\"332ca23\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>La pr\u00e9sence de cette H\u00eatraie est attest\u00e9e depuis pr\u00e8s de 50 000 ans&nbsp; par l&rsquo;INRAe. Il s&rsquo;agit d&rsquo;un ancien refuge dans des gorges assez profondes le long de la Douze lors des derni\u00e8res glaciations. Normalement absent sous cette latitude, le H\u00eatre s&rsquo;y maintient gr\u00e2ce au substrat calcaire datant du Cr\u00e9tac\u00e9 sup\u00e9rieur ainsi qu&rsquo;au microclimat frais et humide pr\u00e9sents le long de la rivi\u00e8re sur un peu plus de 2 kms. Dans les plaines du sud-ouest, cette h\u00eatraie fait \u00e9cho \u00e0 celle de la vall\u00e9e du Ciron (33), \u00e0 une pr\u00e9sence dans les ravins de la for\u00eat de Lussagnet (40) et en for\u00eat du Mas d&rsquo;Agenais&#8230;<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-5682882 elementor-widget elementor-widget-image\" data-id=\"5682882\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"615\" height=\"430\" src=\"https:\/\/www.epl-bazas.fr\/Botanique\/wp-content\/uploads\/2026\/06\/canvas.png\" class=\"attachment-2048x2048 size-2048x2048 wp-image-9172\" alt=\"\" srcset=\"https:\/\/www.epl-bazas.fr\/Botanique\/wp-content\/uploads\/2026\/06\/canvas.png 615w, https:\/\/www.epl-bazas.fr\/Botanique\/wp-content\/uploads\/2026\/06\/canvas-300x210.png 300w\" sizes=\"(max-width: 615px) 100vw, 615px\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-71bce80 elementor-widget elementor-widget-image\" data-id=\"71bce80\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"1152\" height=\"2048\" src=\"https:\/\/www.epl-bazas.fr\/Botanique\/wp-content\/uploads\/2026\/06\/20260510_145026-1152x2048.jpg\" class=\"attachment-2048x2048 size-2048x2048 wp-image-9168\" alt=\"\" srcset=\"https:\/\/www.epl-bazas.fr\/Botanique\/wp-content\/uploads\/2026\/06\/20260510_145026-1152x2048.jpg 1152w, https:\/\/www.epl-bazas.fr\/Botanique\/wp-content\/uploads\/2026\/06\/20260510_145026-169x300.jpg 169w, https:\/\/www.epl-bazas.fr\/Botanique\/wp-content\/uploads\/2026\/06\/20260510_145026-576x1024.jpg 576w, https:\/\/www.epl-bazas.fr\/Botanique\/wp-content\/uploads\/2026\/06\/20260510_145026-768x1365.jpg 768w, https:\/\/www.epl-bazas.fr\/Botanique\/wp-content\/uploads\/2026\/06\/20260510_145026-864x1536.jpg 864w, https:\/\/www.epl-bazas.fr\/Botanique\/wp-content\/uploads\/2026\/06\/20260510_145026.jpg 1440w\" sizes=\"(max-width: 1152px) 100vw, 1152px\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<\/div>\n\t\t","protected":false},"excerpt":{"rendered":"<p>dans les gorges de la Douze sur le secteur de Roquefort (40). La pr\u00e9sence de cette H\u00eatraie est attest\u00e9e depuis pr\u00e8s de 50 000 ans&nbsp; &hellip; <\/p>\n","protected":false},"author":3,"featured_media":9163,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[31,30],"tags":[],"class_list":["post-9161","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-clin-doeil","category-milieux-basiques"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.5 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Une H\u00eatraie relictuelle... - Des clics botaniques<\/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:\/\/www.epl-bazas.fr\/Botanique\/2026\/06\/08\/une-hetraie-relictuelle\/\" \/>\n<meta property=\"og:locale\" content=\"fr_FR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Une H\u00eatraie relictuelle... - Des clics botaniques\" \/>\n<meta property=\"og:description\" content=\"dans les gorges de la Douze sur le secteur de Roquefort (40). 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