{"id":17790,"date":"2018-09-04T16:06:21","date_gmt":"2018-09-04T14:06:21","guid":{"rendered":"https:\/\/www.yannarthusbertrandphoto.com\/?post_type=product&#038;p=17790"},"modified":"2018-09-05T16:32:50","modified_gmt":"2018-09-05T14:32:50","slug":"jacinthes-deau-sur-le-nil","status":"publish","type":"product","link":"https:\/\/www.yannarthusbertrandphoto.com\/fr\/produit\/jacinthes-deau-sur-le-nil\/","title":{"rendered":"Jacinthes d\u2019eau sur le Nil"},"content":{"rendered":"<p>Signal\u00e9e pour la premi\u00e8re fois au d\u00e9but du XXe si\u00e8cle dans le delta du Nil, en \u00c9gypte, et dans la province du Natal, en Afrique du Sud, la jacinthe d\u2019eau (Eichhornia crassipes) est un v\u00e9g\u00e9tal aquatique envahissant. Originaire du Br\u00e9sil o\u00f9 elle se d\u00e9veloppe mod\u00e9r\u00e9ment dans son habitat naturel, elle a \u00e9t\u00e9 introduite sur le continent africain et ailleurs comme plante ornementale, et a colonis\u00e9 en moins de cent ans plus de 50 pays dans le monde. Elle entrave la navigation, obstrue les canaux d\u2019irrigation agricoles et les turbines des barrages hydro\u00e9lectriques. L\u2019\u00e9pais tapis v\u00e9g\u00e9tal qu\u2019elle constitue, et dont la surface peut doubler en 12 jours, engendre l\u2019eutrophisation du milieu, dont l\u2019une des cons\u00e9quences est la diminution de la teneur en oxyg\u00e8ne des eaux entra\u00eenant par asphyxie la disparition de la vie aquatique. Aucune solution efficace pour \u00e9radiquer cet envahisseur n\u2019a encore \u00e9t\u00e9 trouv\u00e9e, mais des moyens de lutte biologique permettent de limiter sa prolif\u00e9ration. Seulement un pourcent des esp\u00e8ces introduites provoque d\u2019importantes pertes \u00e9cologiques et \u00e9conomiques, mais leur pr\u00e9sence reste la deuxi\u00e8me cause de la disparition des esp\u00e8ces dans le monde, apr\u00e8s la destruction des habitats naturels.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Bateaux bloqu\u00e9s par des jacinthes d&#039;eau sur le Nil, en Egypte (29 \u00b0 43 &#039;N &#8211; 31 \u00b0 15&#039; E).<\/p>\n","protected":false},"featured_media":17791,"template":"","meta":{"inline_featured_image":false},"product_cat":[212],"product_tag":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v19.10 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Jacinthes d\u2019eau sur le Nil, Egypte - Yann Arthus-Bertrand Photo<\/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.yannarthusbertrandphoto.com\/fr\/produit\/jacinthes-deau-sur-le-nil\/\" \/>\n<meta property=\"og:locale\" content=\"fr_FR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Jacinthes d\u2019eau sur le Nil, Egypte - Yann Arthus-Bertrand Photo\" \/>\n<meta property=\"og:description\" content=\"Bateaux bloqu\u00e9s par des jacinthes d&#039;eau sur le Nil, en Egypte (29 \u00b0 43 &#039;N - 31 \u00b0 15&#039; 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