{"id":2172,"date":"2010-07-01T12:02:57","date_gmt":"2010-07-01T10:02:57","guid":{"rendered":"http:\/\/www.12sur12.org\/2010\/07\/01\/laisse-de-mer-et-plantes-colonisatrices\/"},"modified":"2021-01-04T16:04:13","modified_gmt":"2021-01-04T15:04:13","slug":"laisse-de-mer-et-plantes-colonisatrices","status":"publish","type":"post","link":"https:\/\/www.12sur12.org\/?p=2172","title":{"rendered":"Laisse de mer et plantes colonisatrices"},"content":{"rendered":"<p><a href=\"https:\/\/www.12sur12.org\/wp-content\/uploads\/2010\/07\/1.jpg\" title=\"haut de la plage\"><img decoding=\"async\" src=\"https:\/\/www.12sur12.org\/wp-content\/uploads\/2010\/07\/1.jpg\" alt=\"haut de la plage\" \/><\/a><\/p>\n<p>Le haut de la plage avant le passage de la cribleuse (juin 2010).<\/p>\n<p>\u00c0 gauche, la dune \u00e9rod\u00e9e par le passage de la temp\u00eate du 28 f\u00e9vrier.<\/p>\n<p><a href=\"https:\/\/www.12sur12.org\/wp-content\/uploads\/2010\/07\/2.jpg\" title=\"atriplex 1\"><img decoding=\"async\" src=\"https:\/\/www.12sur12.org\/wp-content\/uploads\/2010\/07\/2.jpg\" alt=\"atriplex 1\" \/><\/a> <a href=\"https:\/\/www.12sur12.org\/wp-content\/uploads\/2010\/07\/3.jpg\" title=\"atriplex 2\"><img decoding=\"async\" src=\"https:\/\/www.12sur12.org\/wp-content\/uploads\/2010\/07\/3.jpg\" alt=\"atriplex 2\" \/><\/a><\/p>\n<p>Ci-dessus, l&rsquo;<em>atriplex<\/em>,\u00a0 l&rsquo;une des premi\u00e8res plantes \u00e0 fleurs capables de s&rsquo;aventurer sur le sable, o\u00f9 elle indique le niveau sup\u00e9rieur des mar\u00e9es.<\/p>\n<p><a href=\"https:\/\/www.12sur12.org\/wp-content\/uploads\/2010\/07\/4.jpg\" title=\"boursoufflures\"><img decoding=\"async\" src=\"https:\/\/www.12sur12.org\/wp-content\/uploads\/2010\/07\/4.jpg\" alt=\"boursoufflures\" \/><\/a><\/p>\n<p>Les boursouflures correspondent aux algues recouvertes de sable.<\/p>\n<p><a href=\"https:\/\/www.12sur12.org\/wp-content\/uploads\/2010\/07\/5.jpg\" title=\"cakillier\"><img decoding=\"async\" src=\"https:\/\/www.12sur12.org\/wp-content\/uploads\/2010\/07\/5.jpg\" alt=\"cakillier\" \/><\/a><\/p>\n<p>Le<em> cakillier maritime<\/em>, l&rsquo;un des premiers colonisateurs.<\/p>\n<p><a href=\"https:\/\/www.12sur12.org\/wp-content\/uploads\/2010\/07\/6.jpg\" title=\"couverture v\u00e9g\u00e9tale\"><img decoding=\"async\" src=\"https:\/\/www.12sur12.org\/wp-content\/uploads\/2010\/07\/6.jpg\" alt=\"couverture v\u00e9g\u00e9tale\" \/><\/a><\/p>\n<p>Le couvert v\u00e9g\u00e9tal s&rsquo;organise :<em> chiendent des sables<\/em>, <em>panicaud champ\u00eatre<\/em> et <em>girofl\u00e9e des dunes<\/em>.<\/p>\n<p><a href=\"https:\/\/www.12sur12.org\/wp-content\/uploads\/2010\/07\/7.jpg\" title=\"euphorbe\"><img decoding=\"async\" src=\"https:\/\/www.12sur12.org\/wp-content\/uploads\/2010\/07\/7.jpg\" alt=\"euphorbe\" \/><\/a><\/p>\n<p><em>Euphorbe marine<\/em><\/p>\n<p><a href=\"https:\/\/www.12sur12.org\/wp-content\/uploads\/2010\/07\/8.jpg\" title=\"dune mobile\"><img decoding=\"async\" src=\"https:\/\/www.12sur12.org\/wp-content\/uploads\/2010\/07\/8.jpg\" alt=\"dune mobile\" \/><\/a><\/p>\n<p>Dune mobile fix\u00e9e par des <em>oyats, liseron des sables, chiendent, gaillet des sables<\/em>.<\/p>\n<p><a href=\"https:\/\/www.12sur12.org\/wp-content\/uploads\/2010\/07\/9.jpg\" title=\"haut de la plage\"><img decoding=\"async\" src=\"https:\/\/www.12sur12.org\/wp-content\/uploads\/2010\/07\/9.jpg\" alt=\"haut de la dune\" \/><\/a><\/p>\n<p>M\u00e9lange de <em>Cakillier<\/em> et d\u2019<em>Atriplex<\/em> en haut de plage : le sable pi\u00e9g\u00e9 reforme la dune peu \u00e0 peu, des nouvelles esp\u00e8ces s\u2019installent et limitent l\u2019\u00e9rosion (d\u00e9but juin 2010).<\/p>\n<p>La fixation du sable en haut de la plage est en bonne voie; mais bient\u00f4t les engins (dits \u00ab\u00a0cribleuses\u00a0\u00bb) vont intervenir et r\u00e9duire \u00e0 n\u00e9ant en quelques heures les quelques mois n\u00e9cessaires \u00e0 la reconstruction naturelle des pi\u00e8ges \u00e0 sable par les plantes colonisatrices remarquablement efficaces dans leur action.<\/p>\n<p>L\u2019\u00e9rosion \u00e9olienne participe \u00e0 l\u2019amaigrissement des plages dans l\u2019ordre de 30%, les \u00ab\u00a0cribleuses\u00a0\u00bb dans l\u2019ordre de 80%.<\/p>\n<p>Lorsque le nettoyage est indispensable, on ne peut que pr\u00e9coniser un nettoyage manuel; car le nettoyage m\u00e9canique aujourd\u2019hui \u00e0 l\u2019\u0153uvre sur certaines plages est une totale aberration.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Le haut de la plage avant le passage de la cribleuse (juin 2010). \u00c0 gauche, la dune \u00e9rod\u00e9e par le passage de la temp\u00eate du 28 f\u00e9vrier. Ci-dessus, l&rsquo;atriplex,\u00a0 l&rsquo;une des premi\u00e8res plantes \u00e0 fleurs capables de s&rsquo;aventurer sur le &hellip; <a href=\"https:\/\/www.12sur12.org\/?p=2172\">Continue reading <span class=\"meta-nav\">&rarr;<\/span><\/a><\/p>\n","protected":false},"author":8,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[101,96],"tags":[],"class_list":["post-2172","post","type-post","status-publish","format-standard","hentry","category-defense-contre-la-mer-mer-littoral","category-faune-flore"],"_links":{"self":[{"href":"https:\/\/www.12sur12.org\/index.php?rest_route=\/wp\/v2\/posts\/2172","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.12sur12.org\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.12sur12.org\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.12sur12.org\/index.php?rest_route=\/wp\/v2\/users\/8"}],"replies":[{"embeddable":true,"href":"https:\/\/www.12sur12.org\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=2172"}],"version-history":[{"count":1,"href":"https:\/\/www.12sur12.org\/index.php?rest_route=\/wp\/v2\/posts\/2172\/revisions"}],"predecessor-version":[{"id":4784,"href":"https:\/\/www.12sur12.org\/index.php?rest_route=\/wp\/v2\/posts\/2172\/revisions\/4784"}],"wp:attachment":[{"href":"https:\/\/www.12sur12.org\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=2172"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.12sur12.org\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=2172"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.12sur12.org\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=2172"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}