{"id":75625,"date":"2012-04-05T00:00:00","date_gmt":"2012-04-04T22:00:00","guid":{"rendered":"http:\/\/b.bati-journal.com\/consequences-de-lutilisation-de-biocides-dans-la-preservation-du-patrimoine-ancien-la-lecon-de-lascaux\/75625"},"modified":"2019-07-15T11:18:20","modified_gmt":"2019-07-15T09:18:20","slug":"consequences-de-lutilisation-de-biocides-dans-la-preservation-du-patrimoine-ancien-la-lecon-de-lascaux","status":"publish","type":"post","link":"https:\/\/batijournal.com\/index.php\/consequences-de-lutilisation-de-biocides-dans-la-preservation-du-patrimoine-ancien-la-lecon-de-lascaux\/75625\/","title":{"rendered":"Cons\u00e9quences de l’utilisation de biocides dans la pr\u00e9servation du patrimoine ancien : la le\u00e7on de Lascaux"},"content":{"rendered":"

Au cours des dix derni\u00e8res ann\u00e9es, les parois de la grotte de Lascaux ont subi l’invasion d’un champignon suivie du d\u00e9veloppement de taches noires tr\u00e8s pr\u00e9occupantes pour l’avenir des peintures pr\u00e9historiques. Une \u00e9tude montre que cette flore semble encore \u00e9voluer avec l’apparition de champignons et de levures dont une esp\u00e8ce, n’existe, a priori que dans cette grotte. La cause de cette \u00e9volution complexe et de cette succession de microorganismes formant les taches noires est vraisemblablement l’utilisation de biocides dont les r\u00e9sidus constituent une source de carbone et d’azote utilisable par beaucoup de microorganismes. En voulant \u00e9liminer les champignons pr\u00e9sents, les scientifiques ont apport\u00e9 une nouvelle source de nutriments et permis le d\u00e9veloppement de bact\u00e9ries et de champignons qui n’appartiennent pas aux groupes microbiens habituellement rencontr\u00e9s dans les grottes. Ces organismes ont \u00e9t\u00e9 s\u00e9lectionn\u00e9s par les traitements.<\/p>\n","protected":false},"excerpt":{"rendered":"

Au cours des dix derni\u00e8res ann\u00e9es, les parois de la grotte de Lascaux ont subi l’invasion d’un champignon suivie du d\u00e9veloppement de taches noires tr\u00e8s pr\u00e9occupantes pour l’avenir des peintures pr\u00e9historiques. Une \u00e9tude montre que cette flore semble encore \u00e9voluer avec l’apparition de champignons et de levures dont une esp\u00e8ce, n’existe, a priori que dans […]<\/p>\n","protected":false},"author":1,"featured_media":75626,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_et_pb_use_builder":"","_et_pb_old_content":"","_et_gb_content_width":"","footnotes":""},"categories":[6340],"tags":[5462],"class_list":["post-75625","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-architecture-conception","tag-lascaux"],"yoast_head":"\nCons\u00e9quences de l'utilisation de biocides dans la pr\u00e9servation du patrimoine ancien : la le\u00e7on de Lascaux<\/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:\/\/batijournal.com\/index.php\/consequences-de-lutilisation-de-biocides-dans-la-preservation-du-patrimoine-ancien-la-lecon-de-lascaux\/75625\/\" \/>\n<meta property=\"og:locale\" content=\"fr_FR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Cons\u00e9quences de l'utilisation de biocides dans la pr\u00e9servation du patrimoine ancien : la le\u00e7on de Lascaux\" \/>\n<meta property=\"og:description\" content=\"Au cours des dix derni\u00e8res ann\u00e9es, les parois de la grotte de Lascaux ont subi l’invasion d’un champignon suivie du d\u00e9veloppement de taches noires tr\u00e8s pr\u00e9occupantes pour l’avenir des peintures pr\u00e9historiques. 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