{"id":314,"date":"2023-07-29T02:25:36","date_gmt":"2023-07-29T00:25:36","guid":{"rendered":"https:\/\/sargassummonitoring.com\/?page_id=314"},"modified":"2025-03-15T09:58:17","modified_gmt":"2025-03-15T13:58:17","slug":"sargassum","status":"publish","type":"page","link":"https:\/\/sargassummonitoring.com\/fr\/sargassum\/","title":{"rendered":"Sargasses"},"content":{"rendered":"<div class=\"wp-block-uagb-container uagb-block-d11288f3 alignfull uagb-is-root-container\"><div class=\"uagb-container-inner-blocks-wrap\">\n<h3 class=\"wp-block-heading has-text-align-center\">Conna\u00eetre l'algue sargasse<\/h3>\n\n\n\n<div class=\"wp-block-uagb-separator uagb-block-6e09aa5d\"><div class=\"wp-block-uagb-separator__inner\" style=\"--my-background-image:\"><\/div><\/div>\n\n\n\n<p class=\"has-text-align-center has-link-color has-medium-font-size wp-elements-6602487d3adaf030cf0ab084ba1db450\">Il existe des dizaines d'algues sargasse. Grace au reseaux de science citoyenne des sargasses, les scientifiques et les chercheurs ont pu mettre en evidence les trois modeles qui envahissent\u00a0les\u00a0Caraibes.<\/p>\n\n\n\n<p class=\"has-text-align-center has-medium-font-size\"><strong>Avec des conditions optimales, elles peuvent doubler de volume en\u00a0une\u00a0semaine !<\/strong><\/p>\n\n\n\n<p class=\"has-text-align-center has-medium-font-size\"><em><strong>Sargassum fluitans<\/strong><\/em>&nbsp;ont des tiges \u00e9pineuses alors que,&nbsp;<em><strong>Sargassum natans<\/strong><\/em>&nbsp;ont des tiges lisses. Les attributs de la vessie et de la lame diff\u00e8rent consid\u00e9rablement d'une forme \u00e0 l'autre. (A) Pour&nbsp;<strong><em>Sargassum fluitans\u00a0III<\/em><\/strong>, les \u00e9pines sur la tige sont pr\u00e9sentes, les limbes sont larges, les vessies sont d\u00e9pourvues d'\u00e9pines et les vessies sont oblongues. (B) Pour&nbsp;<em><strong>Sargassum natans I<\/strong><\/em>, la tige est lisse, les limbes sont \u00e9troits, des \u00e9pines sont pr\u00e9sentes sur les vessies et les vessies sont sph\u00e9riques (C) Pour&nbsp;<em><strong>Sargassum natans VIII<\/strong><\/em>&nbsp;(cr\u00e9dit photo\u00a0: Janet Bering), la tige est lisse, les limbes sont larges, les vessies sont d\u00e9pourvues d'\u00e9pines et les vessies sont sph\u00e9riques.<\/p>\n\n\n\n<script async src=\"https:\/\/pagead2.googlesyndication.com\/pagead\/js\/adsbygoogle.js?client=ca-pub-8448343880170654\"\n     crossorigin=\"anonymous\"><\/script>\n<ins class=\"adsbygoogle\"\n     style=\"display:block; text-align:center;\"\n     data-ad-layout=\"in-article\"\n     data-ad-format=\"fluid\"\n     data-ad-client=\"ca-pub-8448343880170654\"\n     data-ad-slot=\"3026197241\"><\/ins>\n<script>\n     (adsbygoogle = window.adsbygoogle || []).push({});\n<\/script>\n<\/div><\/div>\n\n\n\n<div class=\"wp-block-uagb-container uagb-block-cd7cbdd9 alignfull uagb-is-root-container\"><div class=\"uagb-container-inner-blocks-wrap\">\n<div class=\"wp-block-uagb-container uagb-block-698e6f5a\">\n<div class=\"wp-block-uagb-container uagb-block-041a6ce1\">\n<div class=\"wp-block-uagb-image uagb-block-cbcf22f1 wp-block-uagb-image--layout-default wp-block-uagb-image--effect-static wp-block-uagb-image--align-none\"><figure class=\"wp-block-uagb-image__figure\"><img decoding=\"async\" srcset=\"https:\/\/sargassummonitoring.com\/wp-content\/uploads\/2023\/07\/sargasses-3-modeles-francais-a.webp 1058w, https:\/\/sargassummonitoring.com\/wp-content\/uploads\/2023\/07\/sargasses-3-modeles-francais-a-160x300.webp 160w, https:\/\/sargassummonitoring.com\/wp-content\/uploads\/2023\/07\/sargasses-3-modeles-francais-a-546x1024.webp 546w, https:\/\/sargassummonitoring.com\/wp-content\/uploads\/2023\/07\/sargasses-3-modeles-francais-a-768x1441.webp 768w, https:\/\/sargassummonitoring.com\/wp-content\/uploads\/2023\/07\/sargasses-3-modeles-francais-a-819x1536.webp 819w, https:\/\/sargassummonitoring.com\/wp-content\/uploads\/2023\/07\/sargasses-3-modeles-francais-a-6x12.webp 6w\" sizes=\"auto, (max-width: 480px) 150px\" src=\"https:\/\/sargassummonitoring.com\/wp-content\/uploads\/2023\/07\/sargasses-3-modeles-francais-a.webp\" alt=\"\" class=\"uag-image-490\" width=\"542\" height=\"1024\" title=\"\" loading=\"lazy\" role=\"img\"\/><\/figure><\/div>\n<\/div>\n<\/div>\n\n\n\n<div class=\"wp-block-uagb-container uagb-block-9b200a82\">\n<div class=\"wp-block-uagb-container uagb-block-817ca24a\">\n<div class=\"wp-block-uagb-image uagb-block-01b3dfd2 wp-block-uagb-image--layout-default wp-block-uagb-image--effect-static wp-block-uagb-image--align-none\"><figure class=\"wp-block-uagb-image__figure\"><img decoding=\"async\" srcset=\"https:\/\/sargassummonitoring.com\/wp-content\/uploads\/2023\/07\/sargasses-3-modeles-francais-b.webp 1062w, https:\/\/sargassummonitoring.com\/wp-content\/uploads\/2023\/07\/sargasses-3-modeles-francais-b-161x300.webp 161w, https:\/\/sargassummonitoring.com\/wp-content\/uploads\/2023\/07\/sargasses-3-modeles-francais-b-548x1024.webp 548w, https:\/\/sargassummonitoring.com\/wp-content\/uploads\/2023\/07\/sargasses-3-modeles-francais-b-768x1435.webp 768w, https:\/\/sargassummonitoring.com\/wp-content\/uploads\/2023\/07\/sargasses-3-modeles-francais-b-822x1536.webp 822w, https:\/\/sargassummonitoring.com\/wp-content\/uploads\/2023\/07\/sargasses-3-modeles-francais-b-6x12.webp 6w\" sizes=\"auto, (max-width: 480px) 150px\" src=\"https:\/\/sargassummonitoring.com\/wp-content\/uploads\/2023\/07\/sargasses-3-modeles-francais-b.webp\" alt=\"\" class=\"uag-image-491\" width=\"542\" height=\"1024\" title=\"\" loading=\"lazy\" role=\"img\"\/><\/figure><\/div>\n<\/div>\n<\/div>\n\n\n\n<div class=\"wp-block-uagb-container uagb-block-bcdd7096\">\n<div class=\"wp-block-uagb-container uagb-block-14c9c2f4\">\n<div class=\"wp-block-uagb-image uagb-block-09119dad wp-block-uagb-image--layout-default wp-block-uagb-image--effect-static wp-block-uagb-image--align-none\"><figure class=\"wp-block-uagb-image__figure\"><img decoding=\"async\" srcset=\"https:\/\/sargassummonitoring.com\/wp-content\/uploads\/2023\/07\/sargasses-3-modeles-francais-c.webp 1070w, https:\/\/sargassummonitoring.com\/wp-content\/uploads\/2023\/07\/sargasses-3-modeles-francais-c-162x300.webp 162w, https:\/\/sargassummonitoring.com\/wp-content\/uploads\/2023\/07\/sargasses-3-modeles-francais-c-552x1024.webp 552w, https:\/\/sargassummonitoring.com\/wp-content\/uploads\/2023\/07\/sargasses-3-modeles-francais-c-768x1425.webp 768w, https:\/\/sargassummonitoring.com\/wp-content\/uploads\/2023\/07\/sargasses-3-modeles-francais-c-828x1536.webp 828w, https:\/\/sargassummonitoring.com\/wp-content\/uploads\/2023\/07\/sargasses-3-modeles-francais-c-6x12.webp 6w\" sizes=\"auto, (max-width: 480px) 150px\" src=\"https:\/\/sargassummonitoring.com\/wp-content\/uploads\/2023\/07\/sargasses-3-modeles-francais-c.webp\" alt=\"\" class=\"uag-image-493\" width=\"542\" height=\"1024\" title=\"\" loading=\"lazy\" role=\"img\"\/><\/figure><\/div>\n<\/div>\n<\/div>\n<\/div><\/div>\n\n\n\n<div class=\"wp-block-uagb-container uagb-block-6b0b9887 alignfull uagb-is-root-container\"><div class=\"uagb-container-inner-blocks-wrap\">\n<iframe loading=\"lazy\" width=\"730\" height=\"410\" src=\"https:\/\/www.youtube.com\/embed\/Zlaror4R8EM?si=si9rGUt0-7uxYm74\" title=\"YouTube video player\" frameborder=\"0\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share\" referrerpolicy=\"strict-origin-when-cross-origin\" allowfullscreen><\/iframe>\n<\/div><\/div>\n\n\n\n<div class=\"wp-block-uagb-container uagb-block-5df45679 alignfull uagb-is-root-container\"><div class=\"uagb-container-inner-blocks-wrap\">\n<script async src=\"https:\/\/pagead2.googlesyndication.com\/pagead\/js\/adsbygoogle.js?client=ca-pub-8448343880170654\"\n     crossorigin=\"anonymous\"><\/script>\n<ins class=\"adsbygoogle\"\n     style=\"display:block; text-align:center;\"\n     data-ad-layout=\"in-article\"\n     data-ad-format=\"fluid\"\n     data-ad-client=\"ca-pub-8448343880170654\"\n     data-ad-slot=\"3026197241\"><\/ins>\n<script>\n     (adsbygoogle = window.adsbygoogle || []).push({});\n<\/script>\n<\/div><\/div>\n\n\n\n<div class=\"wp-block-uagb-separator uagb-block-303fa5e9 wp-block-uagb-separator--icon\"><div class=\"wp-block-uagb-separator__inner\" style=\"--my-background-image:\"><div class=\"wp-block-uagb-separator-element\"><svg xmlns=\"https:\/\/www.w3.org\/2000\/svg\" viewbox=\"0 0 512 512\"><path d=\"M512 256C512 397.4 397.4 512 256 512C114.6 512 0 397.4 0 256C0 114.6 114.6 0 256 0C397.4 0 512 114.6 512 256zM57.71 192.1L67.07 209.4C75.36 223.9 88.99 234.6 105.1 239.2L162.1 255.7C180.2 260.6 192 276.3 192 294.2V334.1C192 345.1 198.2 355.1 208 359.1C217.8 364.9 224 374.9 224 385.9V424.9C224 440.5 238.9 451.7 253.9 447.4C270.1 442.8 282.5 429.1 286.6 413.7L289.4 402.5C293.6 385.6 304.6 371.1 319.7 362.4L327.8 357.8C342.8 349.3 352 333.4 352 316.1V307.9C352 295.1 346.9 282.9 337.9 273.9L334.1 270.1C325.1 261.1 312.8 255.1 300.1 255.1H256.1C245.9 255.1 234.9 253.1 225.2 247.6L190.7 227.8C186.4 225.4 183.1 221.4 181.6 216.7C178.4 207.1 182.7 196.7 191.7 192.1L197.7 189.2C204.3 185.9 211.9 185.3 218.1 187.7L242.2 195.4C250.3 198.1 259.3 195 264.1 187.9C268.8 180.8 268.3 171.5 262.9 165L249.3 148.8C239.3 136.8 239.4 119.3 249.6 107.5L265.3 89.12C274.1 78.85 275.5 64.16 268.8 52.42L266.4 48.26C262.1 48.09 259.5 48 256 48C163.1 48 84.4 108.9 57.71 192.1L57.71 192.1zM437.6 154.5L412 164.8C396.3 171.1 388.2 188.5 393.5 204.6L410.4 255.3C413.9 265.7 422.4 273.6 433 276.3L462.2 283.5C463.4 274.5 464 265.3 464 256C464 219.2 454.4 184.6 437.6 154.5H437.6z\"><\/path><\/svg><\/div><\/div><\/div>\n\n\n\n<div class=\"wp-block-uagb-container uagb-block-796e9ee7 alignfull uagb-is-root-container\"><div class=\"uagb-container-inner-blocks-wrap\">\n<h3 class=\"wp-block-heading has-text-align-center\" style=\"font-size:28px\">L'invasion des sargasses, une catastrophe \u00e9cologique, sanitaire et \u00e9conomique !<\/h3>\n<\/div><\/div>\n\n\n\n<div style=\"height:50px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<div class=\"wp-block-uagb-container uagb-block-5d0b72e7 alignfull uagb-is-root-container\"><div class=\"uagb-container-inner-blocks-wrap\">\n<h3 class=\"wp-block-heading has-text-align-center\">\u00c9volution des Sargasses de 2003 \u00e0 2020<\/h3>\n\n\n\n<div class=\"wp-block-uagb-image aligncenter uagb-block-0e9aed06 wp-block-uagb-image--layout-default wp-block-uagb-image--effect-static wp-block-uagb-image--align-center\"><figure class=\"wp-block-uagb-image__figure\"><img decoding=\"async\" srcset=\"https:\/\/sargassummonitoring.com\/wp-content\/uploads\/2025\/03\/sargassumbelt-sargassum-evolution-sargassum-monitoring-monitoreo-sargazo-sargasse2003-2022.gif ,https:\/\/sargassummonitoring.com\/wp-content\/uploads\/2025\/03\/sargassumbelt-sargassum-evolution-sargassum-monitoring-monitoreo-sargazo-sargasse2003-2022.gif 780w, https:\/\/sargassummonitoring.com\/wp-content\/uploads\/2025\/03\/sargassumbelt-sargassum-evolution-sargassum-monitoring-monitoreo-sargazo-sargasse2003-2022.gif 360w\" sizes=\"auto, (max-width: 480px) 150px\" src=\"https:\/\/sargassummonitoring.com\/wp-content\/uploads\/2025\/03\/sargassumbelt-sargassum-evolution-sargassum-monitoring-monitoreo-sargazo-sargasse2003-2022.gif\" alt=\"Atlantic Sargassum belt animation\" class=\"uag-image-5364\" width=\"1243\" height=\"495\" title=\"sargassumbelt-sargassum-evolution-sargassum-monitoring-monitoreo-sargazo-sargasse2003-2022\" loading=\"lazy\" role=\"img\"\/><\/figure><\/div>\n\n\n\n<p>Image anim\u00e9e : Jouanno &amp; al. (2025)<\/p>\n<\/div><\/div>\n\n\n\n<div style=\"height:50px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<div class=\"wp-block-uagb-content-timeline uagb-timeline__outer-wrap uagb-block-4c8141f2-4401-4130-bd75-2d678f9f78cc uagb-timeline__content-wrap uagb-timeline__center-block  uagb-timeline__arrow-top uagb-timeline\">\n<article class=\"wp-block-uagb-content-timeline-child uagb-timeline__field uagb-timeline-child-eff35745-3269-4c09-85ef-29ddcab42992 uagb-timeline__right uag-hide-mob\"><div class=\"uagb-timeline__marker out-view-uagb-timeline__icon\"><svg xmlns=\"https:\/\/www.w3.org\/2000\/svg\" viewbox=\"0 0 512 512\"><path d=\"M512 256C512 397.4 397.4 512 256 512C114.6 512 0 397.4 0 256C0 114.6 114.6 0 256 0C397.4 0 512 114.6 512 256zM57.71 192.1L67.07 209.4C75.36 223.9 88.99 234.6 105.1 239.2L162.1 255.7C180.2 260.6 192 276.3 192 294.2V334.1C192 345.1 198.2 355.1 208 359.1C217.8 364.9 224 374.9 224 385.9V424.9C224 440.5 238.9 451.7 253.9 447.4C270.1 442.8 282.5 429.1 286.6 413.7L289.4 402.5C293.6 385.6 304.6 371.1 319.7 362.4L327.8 357.8C342.8 349.3 352 333.4 352 316.1V307.9C352 295.1 346.9 282.9 337.9 273.9L334.1 270.1C325.1 261.1 312.8 255.1 300.1 255.1H256.1C245.9 255.1 234.9 253.1 225.2 247.6L190.7 227.8C186.4 225.4 183.1 221.4 181.6 216.7C178.4 207.1 182.7 196.7 191.7 192.1L197.7 189.2C204.3 185.9 211.9 185.3 218.1 187.7L242.2 195.4C250.3 198.1 259.3 195 264.1 187.9C268.8 180.8 268.3 171.5 262.9 165L249.3 148.8C239.3 136.8 239.4 119.3 249.6 107.5L265.3 89.12C274.1 78.85 275.5 64.16 268.8 52.42L266.4 48.26C262.1 48.09 259.5 48 256 48C163.1 48 84.4 108.9 57.71 192.1L57.71 192.1zM437.6 154.5L412 164.8C396.3 171.1 388.2 188.5 393.5 204.6L410.4 255.3C413.9 265.7 422.4 273.6 433 276.3L462.2 283.5C463.4 274.5 464 265.3 464 256C464 219.2 454.4 184.6 437.6 154.5H437.6z\"><\/path><\/svg><\/div><div class=\"uagb-timeline__day-new uagb-timeline__day-right uagb-timeline__events-inner-new\"><div class=\"uagb-timeline__events-inner--content\"><h4 class=\"uagb-timeline__heading\">Histoire de ce ph\u00e9nom\u00e8ne<\/h4><p class=\"uagb-timeline-desc-content\">En 2011, pour une raison visiblement li\u00e9e \u00e0 la pollution humaine, la mer des Sargasses a d\u00e9bord\u00e9. Les macro-algues abritant de nombreux animaux marins ont soudainement augment\u00e9 de volume, allant jusqu'\u00e0 inonder de mani\u00e8re r\u00e9currente les plages de sable blanc des Cara\u00efbes. L'invasion a d'abord \u00e9t\u00e9 saisonni\u00e8re.<br><br>Ces derni\u00e8res ann\u00e9es, les sargasses ont form\u00e9 une deuxi\u00e8me mer dans la ZIC (zone de convergence intertropicale) au nord du Br\u00e9sil. Dans ces eaux \u00e0 la chaleur constante, ces algues brunes se d\u00e9veloppent toute l'ann\u00e9e et s'\u00e9chouent par millions de tonnes sur les c\u00f4tes de plus de 30 pays des Cara\u00efbes et d'ailleurs. Elles se d\u00e9composent alors rapidement, provoquant un d\u00e9sastre \u00e9cologique, \u00e9conomique et sanitaire !<\/p><div class=\"uagb-timeline__arrow\"><\/div><\/div><\/div><div class=\"uagb-timeline__date-new\"><\/div><\/article>\n\n\n\n<article class=\"wp-block-uagb-content-timeline-child uagb-timeline__field uagb-timeline-child-972c9635-2255-4004-9b47-f99792abeb5b uagb-timeline__left\"><div class=\"uagb-timeline__marker out-view-uagb-timeline__icon\"><svg xmlns=\"https:\/\/www.w3.org\/2000\/svg\" viewbox=\"0 0 512 512\"><path d=\"M512 256C512 397.4 397.4 512 256 512C114.6 512 0 397.4 0 256C0 114.6 114.6 0 256 0C397.4 0 512 114.6 512 256zM57.71 192.1L67.07 209.4C75.36 223.9 88.99 234.6 105.1 239.2L162.1 255.7C180.2 260.6 192 276.3 192 294.2V334.1C192 345.1 198.2 355.1 208 359.1C217.8 364.9 224 374.9 224 385.9V424.9C224 440.5 238.9 451.7 253.9 447.4C270.1 442.8 282.5 429.1 286.6 413.7L289.4 402.5C293.6 385.6 304.6 371.1 319.7 362.4L327.8 357.8C342.8 349.3 352 333.4 352 316.1V307.9C352 295.1 346.9 282.9 337.9 273.9L334.1 270.1C325.1 261.1 312.8 255.1 300.1 255.1H256.1C245.9 255.1 234.9 253.1 225.2 247.6L190.7 227.8C186.4 225.4 183.1 221.4 181.6 216.7C178.4 207.1 182.7 196.7 191.7 192.1L197.7 189.2C204.3 185.9 211.9 185.3 218.1 187.7L242.2 195.4C250.3 198.1 259.3 195 264.1 187.9C268.8 180.8 268.3 171.5 262.9 165L249.3 148.8C239.3 136.8 239.4 119.3 249.6 107.5L265.3 89.12C274.1 78.85 275.5 64.16 268.8 52.42L266.4 48.26C262.1 48.09 259.5 48 256 48C163.1 48 84.4 108.9 57.71 192.1L57.71 192.1zM437.6 154.5L412 164.8C396.3 171.1 388.2 188.5 393.5 204.6L410.4 255.3C413.9 265.7 422.4 273.6 433 276.3L462.2 283.5C463.4 274.5 464 265.3 464 256C464 219.2 454.4 184.6 437.6 154.5H437.6z\"><\/path><\/svg><\/div><div class=\"uagb-timeline__day-new uagb-timeline__day-left uagb-timeline__events-inner-new\"><div class=\"uagb-timeline__events-inner--content\"><h4 class=\"uagb-timeline__heading\">Ecologique...<\/h4><p class=\"uagb-timeline-desc-content\">Les \u00e9pais tapis bloquent la photosynth\u00e8se et consomment l'oxyg\u00e8ne de l'eau en \u00e9touffant la faune, la flore et le corail. Les tortues de mer ont des difficult\u00e9s \u00e0 atteindre les fray\u00e8res. Les juv\u00e9niles meurent avant d'atteindre la mer. Certains pays envisagent la classification : catastrophe naturelle !<\/p><div class=\"uagb-timeline__arrow\"><\/div><\/div><\/div><div class=\"uagb-timeline__date-new\"><\/div><\/article>\n\n\n\n<article class=\"wp-block-uagb-content-timeline-child uagb-timeline__field uagb-timeline-child-270fc561-6df2-4e22-8479-97b21ccdbc62 uagb-timeline__right\"><div class=\"uagb-timeline__marker out-view-uagb-timeline__icon\"><svg xmlns=\"https:\/\/www.w3.org\/2000\/svg\" viewbox=\"0 0 512 512\"><path d=\"M512 256C512 397.4 397.4 512 256 512C114.6 512 0 397.4 0 256C0 114.6 114.6 0 256 0C397.4 0 512 114.6 512 256zM57.71 192.1L67.07 209.4C75.36 223.9 88.99 234.6 105.1 239.2L162.1 255.7C180.2 260.6 192 276.3 192 294.2V334.1C192 345.1 198.2 355.1 208 359.1C217.8 364.9 224 374.9 224 385.9V424.9C224 440.5 238.9 451.7 253.9 447.4C270.1 442.8 282.5 429.1 286.6 413.7L289.4 402.5C293.6 385.6 304.6 371.1 319.7 362.4L327.8 357.8C342.8 349.3 352 333.4 352 316.1V307.9C352 295.1 346.9 282.9 337.9 273.9L334.1 270.1C325.1 261.1 312.8 255.1 300.1 255.1H256.1C245.9 255.1 234.9 253.1 225.2 247.6L190.7 227.8C186.4 225.4 183.1 221.4 181.6 216.7C178.4 207.1 182.7 196.7 191.7 192.1L197.7 189.2C204.3 185.9 211.9 185.3 218.1 187.7L242.2 195.4C250.3 198.1 259.3 195 264.1 187.9C268.8 180.8 268.3 171.5 262.9 165L249.3 148.8C239.3 136.8 239.4 119.3 249.6 107.5L265.3 89.12C274.1 78.85 275.5 64.16 268.8 52.42L266.4 48.26C262.1 48.09 259.5 48 256 48C163.1 48 84.4 108.9 57.71 192.1L57.71 192.1zM437.6 154.5L412 164.8C396.3 171.1 388.2 188.5 393.5 204.6L410.4 255.3C413.9 265.7 422.4 273.6 433 276.3L462.2 283.5C463.4 274.5 464 265.3 464 256C464 219.2 454.4 184.6 437.6 154.5H437.6z\"><\/path><\/svg><\/div><div class=\"uagb-timeline__day-new uagb-timeline__day-right uagb-timeline__events-inner-new\"><div class=\"uagb-timeline__events-inner--content\"><h4 class=\"uagb-timeline__heading\">Economique...<\/h4><p class=\"uagb-timeline-desc-content\">Le sable blanc dispara\u00eet, la mer turquoise devient brune, une odeur putride envahit la zone sur plusieurs kilom\u00e8tres. L'industrie du tourisme subit des pertes importantes. Les gaz corrosifs \u00e9mis endommagent les appareils \u00e9lectroniques et \u00e9lectrom\u00e9nagers. L'\u00e9limination des sargasses co\u00fbte des millions d'Euros par an !<\/p><div class=\"uagb-timeline__arrow\"><\/div><\/div><\/div><div class=\"uagb-timeline__date-new\"><\/div><\/article>\n\n\n\n<article class=\"wp-block-uagb-content-timeline-child uagb-timeline__field uagb-timeline-child-8d8965ba-0034-45c5-ae8c-f83a092a8dde uagb-timeline__left\"><div class=\"uagb-timeline__marker out-view-uagb-timeline__icon\"><svg xmlns=\"https:\/\/www.w3.org\/2000\/svg\" viewbox=\"0 0 512 512\"><path d=\"M512 256C512 397.4 397.4 512 256 512C114.6 512 0 397.4 0 256C0 114.6 114.6 0 256 0C397.4 0 512 114.6 512 256zM57.71 192.1L67.07 209.4C75.36 223.9 88.99 234.6 105.1 239.2L162.1 255.7C180.2 260.6 192 276.3 192 294.2V334.1C192 345.1 198.2 355.1 208 359.1C217.8 364.9 224 374.9 224 385.9V424.9C224 440.5 238.9 451.7 253.9 447.4C270.1 442.8 282.5 429.1 286.6 413.7L289.4 402.5C293.6 385.6 304.6 371.1 319.7 362.4L327.8 357.8C342.8 349.3 352 333.4 352 316.1V307.9C352 295.1 346.9 282.9 337.9 273.9L334.1 270.1C325.1 261.1 312.8 255.1 300.1 255.1H256.1C245.9 255.1 234.9 253.1 225.2 247.6L190.7 227.8C186.4 225.4 183.1 221.4 181.6 216.7C178.4 207.1 182.7 196.7 191.7 192.1L197.7 189.2C204.3 185.9 211.9 185.3 218.1 187.7L242.2 195.4C250.3 198.1 259.3 195 264.1 187.9C268.8 180.8 268.3 171.5 262.9 165L249.3 148.8C239.3 136.8 239.4 119.3 249.6 107.5L265.3 89.12C274.1 78.85 275.5 64.16 268.8 52.42L266.4 48.26C262.1 48.09 259.5 48 256 48C163.1 48 84.4 108.9 57.71 192.1L57.71 192.1zM437.6 154.5L412 164.8C396.3 171.1 388.2 188.5 393.5 204.6L410.4 255.3C413.9 265.7 422.4 273.6 433 276.3L462.2 283.5C463.4 274.5 464 265.3 464 256C464 219.2 454.4 184.6 437.6 154.5H437.6z\"><\/path><\/svg><\/div><div class=\"uagb-timeline__day-new uagb-timeline__day-left uagb-timeline__events-inner-new\"><div class=\"uagb-timeline__events-inner--content\"><h4 class=\"uagb-timeline__heading\">Sanitaire...<\/h4><p class=\"uagb-timeline-desc-content\">Les analyses confirment, entre autres, la pr\u00e9sence d'arsenic, de cadnium et de m\u00e9taux lourds captur\u00e9s au cours de leur voyage, ainsi que de Chlord\u00e9cone si les sargasses ont long\u00e9 la Martinique et la Guadeloupe. En se d\u00e9composant, les algues produisent deux gaz dangereux : le sulfure d'hydrog\u00e8ne (H2S) et l'ammoniac (NH3), avec des cons\u00e9quences sur la sant\u00e9 humaine et animale, telles que la toux, des irritations, voire des maux de t\u00eate et des probl\u00e8mes respiratoires. Risque de pr\u00e9-\u00e9clampsie chez les femmes enceintes.<\/p><div class=\"uagb-timeline__arrow\"><\/div><\/div><\/div><div class=\"uagb-timeline__date-new\"><\/div><\/article>\n<div class=\"uagb-timeline__line\"><div class=\"uagb-timeline__line__inner\"><\/div><\/div><\/div>\n\n\n\n<div style=\"height:50px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<div class=\"wp-block-uagb-container uagb-block-96ca8c9c alignwide uagb-is-root-container\">\n<h3 class=\"wp-block-heading has-text-align-center has-ffffff-background-color has-background\" style=\"margin-top:0;margin-right:0;margin-bottom:0;margin-left:0;padding-top:0;padding-right:0;padding-bottom:0;padding-left:0\">Conclusion<\/h3>\n\n\n\n<p class=\"has-text-align-center has-ffffff-background-color has-background has-medium-font-size\" style=\"margin-top:0;margin-right:0;margin-bottom:0;margin-left:0;padding-top:0;padding-right:0;padding-bottom:0;padding-left:0\"><strong>Une premi\u00e8re conclusion s'imposait :<\/strong> Pour \u00e9viter que les sargasses ne meurent sur le rivage, nous devons emp\u00eacher ces algues de s'\u00e9chouer sur la plage en les stoppant dans la mer. Encore faut-il savoir o\u00f9 elles vont aboutir. Jusqu'alors, les seuls outils de d\u00e9tection \u00e9taient les images satellites, difficiles \u00e0 interpr\u00e9ter \u00e0 cause des masses nuageuses et des vagues, il a fallu cr\u00e9er un r\u00e9seau de surveillance permettant de voir l'\u00e9tat r\u00e9el de la c\u00f4te \u00e0 l'instant \"T\".<\/p>\n\n\n\n<div class=\"wp-block-uagb-separator uagb-block-7d30b027\"><div class=\"wp-block-uagb-separator__inner\" style=\"--my-background-image:\"><\/div><\/div>\n\n\n\n<p class=\"has-text-align-center has-white-background-color has-background\" style=\"margin-top:0;margin-right:0;margin-bottom:0;margin-left:0;padding-top:0;padding-right:0;padding-bottom:0;padding-left:0;font-size:23px\">C'est pourquoi&nbsp;<strong><em>Sargassum Monitoring\u00ae<\/em><\/strong>&nbsp; assure un suivi permanent, <strong>365 jours par an<\/strong>.<\/p>\n<\/div>\n\n\n\n<div style=\"height:15px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<div class=\"wp-block-uagb-marketing-button uagb-marketing-btn__align-center uagb-marketing-btn__align-text-center uagb-marketing-btn__icon-after uagb-block-a136dece wp-block-button\"><a href=\"https:\/\/sargassummonitoring.com\/fr\/official-map-2025\/\" class=\"uagb-marketing-btn__link wp-block-button__link\" target=\"\" rel=\"noopener noreferrer\"><h6 class=\"uagb-marketing-btn__title\">Consultez notre Carte<\/h6><svg xmlns=\"https:\/\/www.w3.org\/2000\/svg\" viewbox=\"0 0 448 512\"><path d=\"M438.6 278.6l-160 160C272.4 444.9 264.2 448 256 448s-16.38-3.125-22.62-9.375c-12.5-12.5-12.5-32.75 0-45.25L338.8 288H32C14.33 288 .0016 273.7 .0016 256S14.33 224 32 224h306.8l-105.4-105.4c-12.5-12.5-12.5-32.75 0-45.25s32.75-12.5 45.25 0l160 160C451.1 245.9 451.1 266.1 438.6 278.6z\"><\/path><\/svg><p class=\"uagb-marketing-btn__prefix\">This is the updated Map 2025<\/p><\/a><\/div>\n\n\n\n<div style=\"height:32px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<div class=\"wp-block-uagb-container uagb-block-24919ae5 alignfull uagb-is-root-container\"><div class=\"uagb-container-inner-blocks-wrap\">\n<script async src=\"https:\/\/pagead2.googlesyndication.com\/pagead\/js\/adsbygoogle.js?client=ca-pub-8448343880170654\"\n     crossorigin=\"anonymous\"><\/script>\n<!-- Bloc horizontal -->\n<ins class=\"adsbygoogle\"\n     style=\"display:block\"\n     data-ad-client=\"ca-pub-8448343880170654\"\n     data-ad-slot=\"7135998490\"\n     data-ad-format=\"auto\"\n     data-full-width-responsive=\"true\"><\/ins>\n<script>\n     (adsbygoogle = window.adsbygoogle || []).push({});\n<\/script>\n<\/div><\/div>","protected":false},"excerpt":{"rendered":"<p>Know the Sargassum Seaweed There are dozens of Sargassum algae. Thanks to the Sargassum citizen science network, scientists and researchers have been able to highlight the three models that are invading&nbsp;the&nbsp;Caribbean. Under optimal conditions, they can double in volume&nbsp;in&nbsp;a&nbsp;week ! Sargassum fluitans&nbsp;have thorny stems whereas,&nbsp;Sargassum natans&nbsp;have smooth stems. Bladder and blade attributes differ widely among [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":808,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"_uag_custom_page_level_css":"","site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"disabled","ast-breadcrumbs-content":"","ast-featured-img":"disabled","footer-sml-layout":"","ast-disable-related-posts":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"set","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"footnotes":""},"class_list":["post-314","page","type-page","status-publish","has-post-thumbnail","hentry"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v26.6 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Sargassum - Sargassum Monitoring<\/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:\/\/sargassummonitoring.com\/fr\/sargassum\/\" \/>\n<meta property=\"og:locale\" content=\"fr_FR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Sargassum - Sargassum Monitoring\" \/>\n<meta property=\"og:description\" content=\"Know the Sargassum Seaweed There are dozens of Sargassum algae. 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