{"id":141,"date":"2022-03-26T18:25:00","date_gmt":"2022-03-26T17:25:00","guid":{"rendered":"https:\/\/pmcc.wf\/?p=141"},"modified":"2023-09-26T18:26:38","modified_gmt":"2023-09-26T16:26:38","slug":"la-sargasse-un-fleau","status":"publish","type":"post","link":"https:\/\/pmcc.wf\/index.php\/2022\/03\/26\/la-sargasse-un-fleau\/","title":{"rendered":"La sargasse, un fl\u00e9au ?"},"content":{"rendered":"\n<p class=\"wp-block-paragraph\"><\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong><em><u>Vous&nbsp;en avez certainemen tous d\u00e9j\u00e0 entendu parler&nbsp;<\/u><\/em><\/strong><strong><em><u>de fa\u00e7on n\u00e9gative. Elle s\u00e9vit <\/u><\/em><\/strong><strong><em><u>principalement , dans des&nbsp;contr\u00e9es lointaines . mais sommes nous \u00e0 l&rsquo;abri ?<\/u><\/em><\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong><em><u>&nbsp;A ) LA SARGASSE&nbsp;&nbsp;<\/u><\/em><\/strong><em><strong>Sargassum<\/strong><\/em>&nbsp;est un&nbsp;<a href=\"https:\/\/fr.wikipedia.org\/wiki\/Genre_(biologie)\" target=\"_blank\" rel=\"noreferrer noopener\">genre<\/a>&nbsp;d&rsquo;<a href=\"https:\/\/fr.wikipedia.org\/wiki\/Phaeophyceae\" target=\"_blank\" rel=\"noreferrer noopener\">algues brunes<\/a>&nbsp;( ps )&nbsp;&nbsp;<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Elle&nbsp; recouvre la mer \u00e9ponyme dans les zones&nbsp; Mexique\/Floride&nbsp; mais aussi au japon et m\u00eame en Bretagne.  Compte tenu du r\u00e9chauffement ( et de NOS rejets&nbsp; ..) les&nbsp;\u00ab\u00a0prairies\u00a0\u00bb de cette algue se d\u00e9veloppent \u00e0 tr\u00e8s grande&nbsp;\u00e9chelle,&nbsp; mais pas encore en M\u00e9diterran\u00e9e&nbsp; !&nbsp;<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Certains y ont trouv\u00e9 une opportunit\u00e9&nbsp;\u00e9conomique&nbsp; &nbsp;: alors danger ou opportunit\u00e9 ?<\/p>\n\n\n\n<div class=\"wp-block-columns is-layout-flex wp-container-core-columns-is-layout-8f761849 wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\">\n<figure class=\"wp-block-image size-full is-resized\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/pmcc.wf\/wp-content\/uploads\/2023\/09\/image-54.png\" alt=\"\" class=\"wp-image-144\" style=\"width:275px;height:197px\" width=\"275\" height=\"197\" srcset=\"https:\/\/pmcc.wf\/wp-content\/uploads\/2023\/09\/image-54.png 411w, https:\/\/pmcc.wf\/wp-content\/uploads\/2023\/09\/image-54-300x215.png 300w\" sizes=\"auto, (max-width: 275px) 100vw, 275px\" \/><\/figure>\n<\/div>\n\n\n\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\">\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"412\" height=\"294\" src=\"https:\/\/pmcc.wf\/wp-content\/uploads\/2023\/09\/image-58.png\" alt=\"\" class=\"wp-image-148\" srcset=\"https:\/\/pmcc.wf\/wp-content\/uploads\/2023\/09\/image-58.png 412w, https:\/\/pmcc.wf\/wp-content\/uploads\/2023\/09\/image-58-300x214.png 300w\" sizes=\"auto, (max-width: 412px) 100vw, 412px\" \/><\/figure>\n<\/div>\n\n\n\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\">\n<figure class=\"wp-block-image size-full is-resized\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/pmcc.wf\/wp-content\/uploads\/2023\/09\/image-57.png\" alt=\"\" class=\"wp-image-147\" style=\"width:295px;height:195px\" width=\"295\" height=\"195\" srcset=\"https:\/\/pmcc.wf\/wp-content\/uploads\/2023\/09\/image-57.png 408w, https:\/\/pmcc.wf\/wp-content\/uploads\/2023\/09\/image-57-300x199.png 300w\" sizes=\"auto, (max-width: 295px) 100vw, 295px\" \/><\/figure>\n<\/div>\n<\/div>\n\n\n\n<blockquote class=\"wp-block-quote is-layout-flow wp-block-quote-is-layout-flow\">\n<p class=\"wp-block-paragraph\"><\/p>\n<\/blockquote>\n\n\n\n<p class=\"wp-block-paragraph\"><strong><em>B ) Invasivit\u00e9&nbsp;<\/em><\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">&nbsp;Vous&nbsp; &nbsp;savez&nbsp; s\u00fbrement&nbsp; &nbsp;que cette algue flottante est&nbsp;<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">* tr\u00e9s toxique pour l&rsquo;homme&nbsp;<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">* dangereusement invasive .. mais peu de chance encore de les voir appara\u00eetre&nbsp;pr\u00e8s du&nbsp; <strong>cap corse&nbsp;<\/strong>&nbsp;car il lui faut apparement des eaux tr\u00e9s calmes &#8230;.ou&nbsp; &nbsp;plut\u00f4t&nbsp;en lagunes ou&nbsp; &nbsp;fond des golfes ou mangroves&nbsp; ..mais&nbsp;attention nous ne sommes pas \u00e0 l&rsquo;abri d&rsquo; accidents li\u00e9s aux rejets de navires, aux aquariums etc &#8230;.qui peuvent nous l&rsquo;envoyer &#8230;<strong>Bient\u00f4t<\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">NON NON ci-apr\u00e9s&nbsp; ce n&rsquo;est pas l&rsquo;\u00eele Capense dans 100 ans &#8230;!!<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><img loading=\"lazy\" decoding=\"async\" width=\"365\" height=\"188\" src=\"https:\/\/pmcc.wf\/wp-content\/uploads\/2023\/09\/image-53.png\" alt=\"\" class=\"wp-image-143\" srcset=\"https:\/\/pmcc.wf\/wp-content\/uploads\/2023\/09\/image-53.png 365w, https:\/\/pmcc.wf\/wp-content\/uploads\/2023\/09\/image-53-300x155.png 300w\" sizes=\"auto, (max-width: 365px) 100vw, 365px\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">Film avec vue&nbsp;sous marine :<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><a href=\"https:\/\/www.youtube.com\/watch?v=p70OhN_F21M\" target=\"_blank\" rel=\"noreferrer noopener\">https:\/\/www.youtube.com\/watch?v=p 70 OhN_F21M<\/a><\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><em><strong>C ) Toxicit\u00e9 et puanteur :<\/strong>&nbsp;<strong>grand danger pour le tourisme ( <\/strong>et les<\/em><em>&nbsp;autochtones<\/em><em><strong>! )<\/strong><\/em><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u00ab&nbsp;Quand elles atteignent la plage, ces algues se putr\u00e9fient et&nbsp;d\u00e9gagent une r\u00e9elle&nbsp;&nbsp;puanteur&nbsp; , qui est&nbsp; pour les habitants&nbsp; une&nbsp; catastrophe&nbsp; pestilentielle&nbsp;&#8230;.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">&nbsp;De plus&nbsp; elles rel\u00e2chent des gaz toxiques, absorbent l\u2019oxyg\u00e8ne de l\u2019eau, et \u00e9touffent les fonds et les r\u00e9cifs coralliens.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Un catastrophe annonc\u00e9e ? :<\/p>\n\n\n\n<figure class=\"wp-block-embed is-type-wp-embed is-provider-1-jour-1-actu-com wp-block-embed-1-jour-1-actu-com\"><div class=\"wp-block-embed__wrapper\">\n<blockquote class=\"wp-embedded-content\" data-secret=\"yvqH60cVPg\"><a href=\"https:\/\/www.1jour1actu.com\/science-et-environnement\/aux-antilles-gare-aux-sargasses-ces-algues-toxiques-40713\">Aux Antilles : gare aux sargasses, ces algues toxiques<\/a><\/blockquote><iframe loading=\"lazy\" class=\"wp-embedded-content\" sandbox=\"allow-scripts\" security=\"restricted\" style=\"position: absolute; visibility: hidden;\" title=\"\u00ab\u00a0Aux Antilles : gare aux sargasses, ces algues toxiques\u00a0\u00bb &#8212; 1jour1actu.com\" src=\"https:\/\/www.1jour1actu.com\/science-et-environnement\/aux-antilles-gare-aux-sargasses-ces-algues-toxiques-40713\/embed#?secret=Vmrw9bIohC#?secret=yvqH60cVPg\" data-secret=\"yvqH60cVPg\" width=\"600\" height=\"338\" frameborder=\"0\" marginwidth=\"0\" marginheight=\"0\" scrolling=\"no\"><\/iframe>\n<\/div><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\"><em><strong>&nbsp;D ) mais aussi une Utilit\u00e9&nbsp; :<\/strong>&nbsp;<strong>un cadeau de la nature ?&nbsp;<\/strong><\/em><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">La sargasse est originaire de zones riches en nutriments et proches des c\u00f4tes am\u00e9ricaines, en particulier du golfe du Mexique. Les courants la transportent autour de la p\u00e9ninsule de Floride, o\u00f9 elle est capt\u00e9e par le Gulf Stream remontant vers le nord, avant d\u2019aboutir dans la mer des Sargasses. L\u2019oc\u00e9anographe Sylvia Earle a lanc\u00e9, avec d\u2019autres, un projet consistant \u00e0 faire de la mer des Sargasses la premi\u00e8re aire marine prot\u00e9g\u00e9e en haute mer. Elle compare ces algues \u00e0 une for\u00eat tropicale dor\u00e9e. Une m\u00e9taphore pertinente car les algues forment une sorte de canop\u00e9e \u00e0 la surface de l\u2019eau.&nbsp;<\/p>\n\n\n\n<figure class=\"wp-block-embed\"><div class=\"wp-block-embed__wrapper\">\nhttps:\/\/www.nationalgeographic.fr\/environnement\/2019\/05\/les-sargasses-un-ecosysteme-exceptionnel\n<\/div><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>et une nouvelle \u00e9conomie ? :&nbsp; <\/strong>&nbsp; m\u00e9dicaments ,&nbsp;papier, bi\u00e8re, semelles de chaussures, charbon-actif ou biocarburant sont d\u00e9j\u00e0 des applications . Certaines esp\u00e8ces sont prometteuses pour le traitement des eaux et la fixation des m\u00e9taux lourds.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">La farine de Sargasse a \u00e9t\u00e9 utilis\u00e9e comme compl\u00e9ment alimentaire pour les poules pondeuses ou les moutons. Elles sont parfois valoris\u00e9es sous forme d&rsquo;engrais naturels ou pour la production \u00e9nerg\u00e9tique (d\u00e9gagement de biogaz)<\/p>\n\n\n\n<figure class=\"wp-block-embed\"><div class=\"wp-block-embed__wrapper\">\nhttps:\/\/www.passeportsante.net\/fr\/Solutions\/HerbierMedicinal\/Plante.aspx?doc=sargasse-bienfaits-proprietes-utilisation-cette-algue\n<\/div><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\"><a href=\"https:\/\/www.nhu.bzh\/algues-en-bretagne\/\" target=\"_blank\" rel=\"noreferrer noopener\">https:\/\/www.nhu.bzh\/algues-en-bretagne\/<\/a><br>Finalement&nbsp; nocivit\u00e9s et bienfaits sont ils incompatibles ???&nbsp;Remarque<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">: un&nbsp;prochain mail vous parlera de ce poisson&nbsp;remarquable&nbsp; ( Histrio&nbsp;histrio&nbsp; ou poisson grenouille) qui vit exclusivement&nbsp;dans ces algues &#8230;<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><em><strong>Le coin des curieux<\/strong><\/em><strong>&nbsp; :&nbsp;<\/strong><\/p>\n\n\n\n<figure class=\"wp-block-embed\"><div class=\"wp-block-embed__wrapper\">\nhttps:\/\/fr.wikipedia.org\/wiki\/Sargassum_fluitans\n<\/div><\/figure>\n\n\n\n<figure class=\"wp-block-embed\"><div class=\"wp-block-embed__wrapper\">\nhttps:\/\/fresques.ina.fr\/ouest-en-memoire\/fiche-media\/Region00297\/la-sargasse-nouvelle-algue-du-golfe-du-morbihan.html\n<\/div><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\"><strong><em>A BIENT\u00d4T&nbsp;ET RESTONS VIGILANTS&nbsp;<\/em><\/strong><\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong><em>ps : ne pas confondre&nbsp;avec la sargasse&nbsp;japonaise d\u00e9j\u00e0 pr\u00e9sente&nbsp;en m\u00e9diterran\u00e9e&nbsp;:&nbsp;<\/em><\/strong><a href=\"https:\/\/doris.ffessm.fr\/Especes\/Sargassum-muticum-Sargasse-japonaise-2013\" target=\"_blank\" rel=\"noreferrer noopener\">https:\/\/doris.ffessm.fr\/Especes\/Sargassum-muticum-Sargasse-japonaise-2013<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Vous&nbsp;en avez certainemen tous d\u00e9j\u00e0 entendu parler&nbsp;de fa\u00e7on n\u00e9gative. Elle s\u00e9vit principalement , dans des&nbsp;contr\u00e9es lointaines . mais sommes nous \u00e0 l&rsquo;abri ? &nbsp;A ) LA SARGASSE&nbsp;&nbsp;Sargassum&nbsp;est un&nbsp;genre&nbsp;d&rsquo;algues brunes&nbsp;( ps )&nbsp;&nbsp; Elle&nbsp; recouvre la mer \u00e9ponyme dans les zones&nbsp; Mexique\/Floride&nbsp; mais aussi au japon et m\u00eame en Bretagne. Compte tenu du r\u00e9chauffement ( et de [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-141","post","type-post","status-publish","format-standard","hentry","category-non-classe"],"_links":{"self":[{"href":"https:\/\/pmcc.wf\/index.php\/wp-json\/wp\/v2\/posts\/141","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/pmcc.wf\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/pmcc.wf\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/pmcc.wf\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/pmcc.wf\/index.php\/wp-json\/wp\/v2\/comments?post=141"}],"version-history":[{"count":2,"href":"https:\/\/pmcc.wf\/index.php\/wp-json\/wp\/v2\/posts\/141\/revisions"}],"predecessor-version":[{"id":150,"href":"https:\/\/pmcc.wf\/index.php\/wp-json\/wp\/v2\/posts\/141\/revisions\/150"}],"wp:attachment":[{"href":"https:\/\/pmcc.wf\/index.php\/wp-json\/wp\/v2\/media?parent=141"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/pmcc.wf\/index.php\/wp-json\/wp\/v2\/categories?post=141"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/pmcc.wf\/index.php\/wp-json\/wp\/v2\/tags?post=141"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}