{"id":4906,"date":"2026-01-06T15:55:46","date_gmt":"2026-01-06T14:55:46","guid":{"rendered":"https:\/\/martinique2050.com\/origine-des-algues-sargasses\/"},"modified":"2026-07-13T14:15:29","modified_gmt":"2026-07-13T18:15:29","slug":"origine-des-algues-sargasses","status":"publish","type":"post","link":"https:\/\/martinique2050.com\/en\/origine-des-algues-sargasses\/","title":{"rendered":"Origine des algues sargasses"},"content":{"rendered":"<div class=\"entry-content\">\n<p align=\"justify\"><b>Les algues \u00e9tant la premi\u00e8re forme de vie \u00e0 appara\u00eetre sur terre, les sargasses peuplent les mers depuis des millions d\u2019ann\u00e9es. De fa\u00e7on chronologique, l\u2019information qui suit permet de faire un retour sur l\u2019origine de cette esp\u00e8ce v\u00e9g\u00e9tale, de sa pr\u00e9sence dans l\u2019oc\u00e9an Atlantique jusque dans la Cara\u00efbe.<\/b><\/p>\n<p align=\"justify\"><b>Pr\u00e9sence depuis des millions d\u2019ann\u00e9es<\/b><\/p>\n<p align=\"justify\">Dans l\u2019oc\u00e9an Atlantique, la d\u00e9rive des sargasses existe depuis des millions d\u2019ann\u00e9es. Bien que dans son journal Christophe Colon ait \u00e9voqu\u00e9 la pr\u00e9sence d\u2019algues vertes lors de sa travers\u00e9e vers les Indes, il est admis qu\u2019il a rapport\u00e9 \u00e0 plusieurs reprises la pr\u00e9sence de bancs de sargasses lorsqu\u2019il atteignit le territoire que l\u2019on appelle aujourd\u2019hui la \u00abMer des Sargasses\u00bb. La d\u00e9couverte de traces d\u2019existence des sargasses a confirm\u00e9 que leur pr\u00e9sence date au moins de -444 \u00e0 -419 millions d\u2019ann\u00e9es (2).<\/p>\n<p align=\"justify\"><b>La mer des sargasses<\/b><\/p>\n<p align=\"justify\">La Mer des Sargasses, aussi nomm\u00e9e la \u00abfor\u00eat tropicale flottante dor\u00e9e\u00bb, est situ\u00e9e dans l\u2019oc\u00e9an Atlantique pr\u00e8s des Bermudes. Elle s\u2019\u00e9tend sur une superficie de 1000 km par 3200 km et on \u00e9value \u00e0 10 millions de tonnes m\u00e9triques la quantit\u00e9 de sargasses qu\u2019elle constitue (3). Localis\u00e9e au centre de grands courants oc\u00e9aniques appel\u00e9s gyre oc\u00e9anique, cette zone se caract\u00e9rise par une absence de vague et de vent, o\u00f9 s\u2019agglom\u00e8rent algues et d\u00e9chets \u00e0 la d\u00e9rive. (2). N\u00e9anmoins, des groupements de sargasses sont constamment lib\u00e9r\u00e9s de ce gyre oc\u00e9anique et s\u2019\u00e9parpillent dans l\u2019Atlantique (4).<\/p>\n<div id=\"attachment_2872\" style=\"width: 760px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" aria-describedby=\"caption-attachment-2872\" loading=\"lazy\" class=\"wp-image-2872 size-full\" src=\"data:image\/svg+xml,%3Csvg%20xmlns='http:\/\/www.w3.org\/2000\/svg'%20viewBox='0%200%20750%20536'%3E%3C\/svg%3E\" alt=\"\" width=\"750\" height=\"536\" data-lazy-srcset=\"..\/wp-content\/uploads\/sites\/16\/2018\/04\/mer-des-sargasses-e1524417922308.jpg 750w, ..\/wp-content\/uploads\/sites\/16\/2018\/04\/mer-des-sargasses-e1524417922308-300x214.jpg 300w, ..\/wp-content\/uploads\/sites\/16\/2018\/04\/mer-des-sargasses-e1524417922308-150x107.jpg 150w, ..\/wp-content\/uploads\/sites\/16\/2018\/04\/mer-des-sargasses-e1524417922308-500x357.jpg 500w\" data-lazy-sizes=\"(max-width: 750px) 100vw, 750px\" data-lazy-src=\"..\/wp-content\/uploads\/sites\/16\/2018\/04\/mer-des-sargasses-e1524417922308.jpg\"><noscript><img loading=\"lazy\" decoding=\"async\" aria-describedby=\"caption-attachment-2872\" loading=\"lazy\" class=\"wp-image-2872 size-full\" src=\"..\/wp-content\/uploads\/sites\/16\/2018\/04\/mer-des-sargasses-e1524417922308.jpg\" alt=\"\" width=\"750\" height=\"536\" srcset=\"..\/wp-content\/uploads\/sites\/16\/2018\/04\/mer-des-sargasses-e1524417922308.jpg 750w, ..\/wp-content\/uploads\/sites\/16\/2018\/04\/mer-des-sargasses-e1524417922308-300x214.jpg 300w, ..\/wp-content\/uploads\/sites\/16\/2018\/04\/mer-des-sargasses-e1524417922308-150x107.jpg 150w, ..\/wp-content\/uploads\/sites\/16\/2018\/04\/mer-des-sargasses-e1524417922308-500x357.jpg 500w\" sizes=\"auto, (max-width: 750px) 100vw, 750px\"><\/noscript><\/p>\n<p id=\"caption-attachment-2872\" class=\"wp-caption-text\">Map: National Geographic : <a href=\"https:\/\/www.bibliotecapleyades.net\/ciencia\/esp_bermuda_04.htm\">https:\/\/www.bibliotecapleyades.net\/ciencia\/esp_bermuda_04.htm<\/a><\/p>\n<\/div>\n<p align=\"justify\"><b>\u00c9chouage dans les Cara\u00efbes<\/b><\/p>\n<p align=\"justify\">Dans la litt\u00e9rature, il est mentionn\u00e9 qu\u2019en 1864 ont eu lieu dans le Golfe du Mexique, les premiers \u00e9chouages importants d\u2019algues sargasses (2). \u00c0 cette \u00e9poque, les \u00e9chouages observ\u00e9s \u00e9taient beaucoup moins s\u00e9v\u00e8res dans l\u2019arc antillais (4), alors que depuis 2011, le ph\u00e9nom\u00e8ne prend une ampleur consid\u00e9rable sur ce territoire, ainsi que sur la c\u00f4te ouest africaine (2).<\/p>\n<p align=\"justify\">Suite \u00e0 cette premi\u00e8re ann\u00e9e d\u2019arrivages massifs sur le territoire de la Cara\u00efbe en 2011, de nouvelles observations ont \u00e9t\u00e9 signal\u00e9es en 2012. L\u2019ann\u00e9e 2013 a laiss\u00e9 un temps de r\u00e9pit, mais des arrivages importants sont survenus en 2014 et ont \u00e9t\u00e9 en 2015, particuli\u00e8rement forts. Une accalmie avec des quantit\u00e9s modestes a caract\u00e9ris\u00e9 l\u2019ann\u00e9e 2016 (2) et 2017. Les \u00e9chouages ont doucement repris en d\u00e9cembre 2017 et une \u00abcrise\u00bb a d\u00e9but\u00e9 en janvier 2018. Un survol a\u00e9rien pour \u00e9valuer la r\u00e9partition des algues sur le territoire permettra prochainement d\u2019\u00e9tablir une carte \u00e0 ce sujet (communication personnel, F. V\u00e9di\u00e9, DEAL).<\/p>\n<p align=\"justify\">Dans l\u2019arc antillais, les moments d\u2019\u00e9chouages importants sont instables d\u2019une ann\u00e9e \u00e0 l\u2019autre, mais se situent principalement entre les mois de juillet \u00e0 octobre (5). En Martinique ils touchent particuli\u00e8rement la c\u00f4te Atlantique, mais aussi celle du sud (1)<\/p>\n<p style=\"text-align: right\" align=\"justify\">Mariska Desmarquis<\/p>\n<hr>\n<p align=\"justify\">R\u00e9f\u00e9rences<\/p>\n<p style=\"font-size: xx-small\" align=\"justify\">1- ADEME, 2015. Collecte et valorisation des algues sargasses en Martinique Appel \u00e0 la manifestation d\u2019int\u00e9r\u00eat [PDF en ligne] : <a href=\"https:\/\/martinique.ademe.fr\/sites\/default\/files\/files\/Accueil\/ami-collecte-valorisation-algues-sargasses.pdf\">https:\/\/martinique.ademe.fr\/sites\/default\/files\/files\/Accueil\/ami-collecte-valorisation-algues-sargasses.pdf<\/a> Page consult\u00e9e le 27 mars 2018.<br \/>\n2-Agence Nationale de s\u00e9curit\u00e9 sanitaire alimentation, environnement, travail (ANSES), 2017. Expositions aux \u00e9manations d\u2019algues sargasses en d\u00e9composition au Antilles et en Guyane. [PDF en ligne] : <a href=\"..\/fr\/system\/files\/AIR2015SA0225Ra.pdf\">https:\/\/www.anses.fr\/fr\/system\/files\/AIR2015SA0225Ra.pdf<\/a> Page consult\u00e9e le 27 mars 2018.<br \/>\n3- Caribbean Hotel &amp; Tourism Association, 2016. Sargasse : Un guide pratique pour la Cara\u00efbe Traduit de l\u2019anglais par Fran\u00e7oise Miranne-Parole et Nady Vial-Cabrera, responsable de la Coop\u00e9ration Internationale. DEAL Guadeloupe. [PDF en ligne] : <a href=\"..\/IMG\/pdf\/CAST_VF_pdf.pdf\">http:\/\/www.guadeloupe.developpement-durable.gouv.fr\/IMG\/pdf\/CAST_VF_pdf.pdf<\/a> Page consult\u00e9e le 27 mars 2018.<br \/>\n4- DEAL Guadeloupe 2014, Note sargasses [PDF en ligne] : <a href=\"..\/documents\/2014-note-sargasses-fmazeas-deal-unite-biodiversite-marine-maj-5fev2015.pdf\">http:\/\/www.ifrecor.com\/documents\/2014-note-sargasses-fmazeas-deal-unite-biodiversite-marine-maj-5fev2015.pdf<\/a> Page consult\u00e9e le 27 mars 2018.<br \/>\n5- FLORENNE, T. et <i>al., <\/i>2016. Le ph\u00e9nom\u00e8ne d\u2019\u00e9chouage des sargasses dans les Antilles et en Guyane. Gouvernement Fran\u00e7ais. [PDF en ligne] : <a href=\"http:\/\/cgedd.documentation.developpement-durable.gouv.fr\/documents\/cgedd\/010345-01_rapport.pdf\">http:\/\/cgedd.documentation.developpement-durable.gouv.fr\/documents\/cgedd\/010345-01_rapport.pdf<\/a> Page consult\u00e9e le 27 mars 2018.<\/p>\n<\/p><\/div>\n","protected":false},"excerpt":{"rendered":"<p>Les algues \u00e9tant la premi\u00e8re forme de vie \u00e0 appara\u00eetre sur terre, les sargasses peuplent les mers depuis des millions d\u2019ann\u00e9es. De fa\u00e7on chronologique, l\u2019information qui suit permet de faire un retour sur l\u2019origine de cette esp\u00e8ce v\u00e9g\u00e9tale, de sa pr\u00e9sence dans l\u2019oc\u00e9an Atlantique jusque dans la Cara\u00efbe. Pr\u00e9sence depuis des millions d\u2019ann\u00e9es Dans l\u2019oc\u00e9an &hellip;<\/p>","protected":false},"author":1,"featured_media":4627,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"_yoast_wpseo_meta-robots-noindex":"","_yoast_wpseo_canonical":"","_yoast_wpseo_opengraph-title":"","_yoast_wpseo_opengraph-description":"","_yoast_wpseo_twitter-title":"","_yoast_wpseo_twitter-description":"","footnotes":""},"categories":[1187,1576],"tags":[1605,1606,1286],"class_list":["post-4906","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-actualites","category-sante-qualite-de-vie","tag-mer-des-sargasses","tag-origine-des-sargasses","tag-sargasses"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.2 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Origine des algues sargasses - martinique2050<\/title>\n<meta name=\"description\" content=\"Les algues \u00e9tant la premi\u00e8re forme de vie \u00e0 appara\u00eetre sur terre, les sargasses peuplent les mers depuis des millions d\u2019ann\u00e9es. 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