{"id":3537,"date":"2025-12-04T19:38:25","date_gmt":"2025-12-04T19:38:25","guid":{"rendered":"https:\/\/infos-media-nantes.fr\/?p=3537"},"modified":"2025-12-04T19:38:25","modified_gmt":"2025-12-04T19:38:25","slug":"extension-natura-2000-marais-erdre","status":"publish","type":"post","link":"https:\/\/infos-media-nantes.fr\/extension-natura-2000-marais-erdre\/","title":{"rendered":"Nantes m\u00e9tropole : un projet d\u2019extension des zones humides Natura 2000 pr\u00e9sent\u00e9 aux communes"},"content":{"rendered":"\n<article>\n  <header>\n  \n    <p>\n      Un projet d\u2019extension du site Natura 2000 des <strong>Marais de l\u2019Erdre<\/strong> pourrait porter la surface des \n      zones prot\u00e9g\u00e9es de 2 700 \u00e0 <strong>3 060 hectares<\/strong>. Ce nouveau p\u00e9rim\u00e8tre engloberait plusieurs vallons au \n      potentiel \u00e9cologique remarquable, confirm\u00e9s par les donn\u00e9es de cartographie recueillies en 2021 et 2022 par \n      l\u2019Edenn, le syndicat mixte charg\u00e9 de la gestion de ce vaste espace naturel.\n    <\/p>\n  <\/header>\n\n  <section>\n    <h2>De nouvelles donn\u00e9es \u00e9cologiques d\u00e9cisives<\/h2>\n    <p>\n      Deux zones ont particuli\u00e8rement retenu l\u2019attention des \u00e9quipes de l\u2019Edenn : \n      les <strong>vallons de l\u2019Hocmard<\/strong> et du <strong>Verdier<\/strong>.  \n      Les relev\u00e9s men\u00e9s sur ces secteurs ont mis en \u00e9vidence une grande diversit\u00e9 d\u2019habitats naturels, \n      ainsi que la pr\u00e9sence d\u2019esp\u00e8ces faunistiques et floristiques d\u2019int\u00e9r\u00eat communautaire.\n    <\/p>\n    <p>\n      Ces r\u00e9sultats ont conduit \u00e0 envisager un \u00e9largissement du p\u00e9rim\u00e8tre Natura 2000, afin de mieux prot\u00e9ger \n      ces milieux sensibles. L\u2019int\u00e9gration de ces vallons permettrait en effet d\u2019assurer la coh\u00e9rence \u00e9cologique \n      du site, en reliant plusieurs espaces humides aujourd\u2019hui s\u00e9par\u00e9s.\n    <\/p>\n  <\/section>\n\n  <section>\n    <h2>Une concertation engag\u00e9e avec les communes<\/h2>\n    <p>\n      Tout au long de l\u2019ann\u00e9e 2025, les communes concern\u00e9es ont \u00e9t\u00e9 associ\u00e9es \u00e0 une \n      <strong>proc\u00e9dure de concertation<\/strong>. Le projet a \u00e9galement \u00e9t\u00e9 pr\u00e9sent\u00e9 en comit\u00e9 de pilotage Natura 2000 \n      ainsi qu\u2019aux partenaires institutionnels et associatifs.  \n      L\u2019objectif : partager les enjeux, affiner la cartographie et pr\u00e9ciser les modalit\u00e9s de gestion \u00e9cologique.\n    <\/p>\n    <p>\n      L\u2019extension propos\u00e9e porterait la surface totale des sites Natura 2000 \u00e0 \n      <strong>3 060 hectares de zones humides<\/strong> : marais, tourbi\u00e8res, prairies humides et vall\u00e9es encaiss\u00e9es.  \n      Une \u00e9volution consid\u00e9r\u00e9e comme indispensable pour pr\u00e9server durablement ces milieux riches mais fragiles.\n    <\/p>\n  <\/section>\n\n  <section>\n    <h2>Deux r\u00e9unions publiques pour informer les habitants<\/h2>\n    <p>\n      Afin d\u2019associer au mieux la population \u00e0 cette d\u00e9marche, deux r\u00e9unions d\u2019information ouvertes \u00e0 tous \n      sont programm\u00e9es en pr\u00e9sence d\u2019un repr\u00e9sentant de l\u2019Edenn :\n    <\/p>\n    <ul>\n      <li><strong>Mardi 16 d\u00e9cembre \u00e0 19 h 30<\/strong>, salle Barbara, boulevard du Gesvres, La Chapelle-sur-Erdre.<\/li>\n      <li><strong>Jeudi 18 d\u00e9cembre \u00e0 19 h 30<\/strong>, salle des Loisirs, 15 rue du G\u00e9n\u00e9ral-Leclerc, Nort-sur-Erdre.<\/li>\n    <\/ul>\n    <p>\n      Ces rencontres permettront d\u2019\u00e9changer sur la cartographie, les enjeux \u00e9cologiques, les b\u00e9n\u00e9fices attendus \n      du classement Natura 2000 et les obligations associ\u00e9es.\n    <\/p>\n  <\/section>\n\n  <!-- MINI-JEU OFFICIEL IMN \u2014 QUIZ 3 NIVEAUX -->\n  <section id=\"imn-quiz\">\n    <h2>Mini-jeu : Quiz sp\u00e9cial zones humides et Natura 2000<\/h2>\n    <p>Teste tes connaissances : trois niveaux, cinq questions chacun. Les r\u00e9ponses changent d\u2019ordre \u00e0 chaque partie.<\/p>\n\n    <div class=\"imn-quiz-levels\">\n      <button class=\"imn-btn\" data-level=\"facile\">Facile<\/button>\n      <button class=\"imn-btn\" data-level=\"moyen\">Moyen<\/button>\n      <button class=\"imn-btn\" data-level=\"difficile\">Difficile<\/button>\n    <\/div>\n\n    <div id=\"imn-quiz-panel\" style=\"display:none;\">\n      <p id=\"imn-quiz-question\" style=\"font-weight:bold;\"><\/p>\n      <div id=\"imn-quiz-answers\"><\/div>\n      <button class=\"imn-btn\" id=\"imn-quiz-next\" style=\"display:none;\">Question suivante<\/button>\n      <p id=\"imn-quiz-result\" style=\"font-weight:bold;margin-top:12px;\"><\/p>\n    <\/div>\n  <\/section>\n\n  <footer>\n    <p>\n      Le projet d\u2019extension pourrait renforcer la pr\u00e9servation des zones humides et am\u00e9liorer la coh\u00e9rence \n      \u00e9cologique du territoire. Les discussions, toujours en cours, d\u00e9termineront la mise en \u0153uvre finale \n      de cette \u00e9volution du site Natura 2000 des Marais de l\u2019Erdre.\n    <\/p>\n  <\/footer>\n<\/article>\n\n<style>\n  article a { color:#5532F0; font-weight:bold; text-decoration:underline; }\n\n  .imn-btn {\n    background:#5532F0;\n    color:#fff;\n    border:1px solid #5532F0;\n    border-radius:6px;\n    padding:8px 14px;\n    cursor:pointer;\n    font-size:15px;\n    font-weight:bold;\n    appearance:none;\n    -webkit-appearance:none;\n  }\n\n  #imn-quiz { \n    margin-top:30px; \n    padding:16px; \n    border:1px solid #ddd; \n    border-radius:8px;\n  }\n\n  .imn-quiz-levels { \n    display:flex; \n    gap:10px; \n    margin-bottom:16px; \n    flex-wrap:wrap;\n  }\n\n  #imn-quiz-answers button {\n    display:block;\n    width:100%;\n    margin:6px 0;\n    background:#fff;\n    color:#000;\n    border:1px solid #ccc;\n    padding:8px;\n    border-radius:5px;\n    cursor:pointer;\n    text-align:left;\n  }\n  #imn-quiz-answers button:hover { border-color:#5532F0; }\n<\/style>\n\n<script>\n(function(){\n  function imnTrack(action,label){\n    console.log(\"IMN_ANALYTICS\",action,label||\"\",new Date().toISOString());\n  }\n\n  const data = {\n    facile: [\n      {q:\"Quelle surface pourrait atteindre le site Natura 2000 ?\",a:[\"3 060 ha\",\"2 700 ha\",\"3 600 ha\"],c:0},\n      {q:\"Quels vallons sont concern\u00e9s ?\",a:[\"Hocmard et Verdier\",\"Gobin et Sillon\",\"Gesvres et Crame\"],c:0},\n      {q:\"Qui a men\u00e9 la cartographie \u00e9cologique ?\",a:[\"Edenn\",\"INRAE\",\"IGN\"],c:0},\n      {q:\"Quand ont eu lieu les \u00e9tudes naturalistes ?\",a:[\"2021-2022\",\"2017-2018\",\"2024-2025\"],c:0},\n      {q:\"Combien de r\u00e9unions publiques sont pr\u00e9vues ?\",a:[\"Deux\",\"Une\",\"Quatre\"],c:0}\n    ],\n    moyen: [\n      {q:\"Quel type d\u2019habitats domine dans l\u2019extension ?\",a:[\"Zones humides\",\"Dunes\",\"Falaises\"],c:0},\n      {q:\"Quel est l\u2019objectif principal de l\u2019extension ?\",a:[\"Renforcer la coh\u00e9rence \u00e9cologique\",\"Cr\u00e9er un parc urbain\",\"Installer des observatoires\"],c:0},\n      {q:\"Quel syndicat mixte pilote les \u00e9tudes ?\",a:[\"Edenn\",\"Loire Oc\u00e9an\",\"SEPAN\"],c:0},\n      {q:\"O\u00f9 aura lieu la r\u00e9union du 16 d\u00e9cembre ?\",a:[\"La Chapelle-sur-Erdre\",\"Nantes\",\"Suce-sur-Erdre\"],c:0},\n      {q:\"Qu\u2019impose Natura 2000 ?\",a:[\"Une gestion adapt\u00e9e\",\"Des cl\u00f4tures\",\"L\u2019interdiction d\u2019acc\u00e8s\"],c:0}\n    ],\n    difficile: [\n      {q:\"Quel type d\u2019esp\u00e8ces est d\u00e9terminant pour ce classement ?\",a:[\"Communautaires\",\"Domestiques\",\"Exotiques\"],c:0},\n      {q:\"Quel enjeu majeur motive l\u2019int\u00e9gration des vallons ?\",a:[\"Continuit\u00e9 \u00e9cologique\",\"Tourisme\",\"Exploitation foresti\u00e8re\"],c:0},\n      {q:\"Qui participe aux concertations ?\",a:[\"Communes et partenaires\",\"Seuls les habitants\",\"Uniquement l\u2019\u00c9tat\"],c:0},\n      {q:\"Comment qualifier la cartographie 2021-2022 ?\",a:[\"D\u00e9cisive\",\"Anecdotique\",\"Obsol\u00e8te\"],c:0},\n      {q:\"Quel type de milieu est une tourbi\u00e8re ?\",a:[\"Zone humide\",\"For\u00eat s\u00e8che\",\"Pelouse steppique\"],c:0}\n    ]\n  };\n\n  let level=null, qList=[], index=0, score=0;\n  const lvlBtns=document.querySelectorAll(\".imn-quiz-levels .imn-btn\");\n  const panel=document.getElementById(\"imn-quiz-panel\");\n  const qEl=document.getElementById(\"imn-quiz-question\");\n  const ansEl=document.getElementById(\"imn-quiz-answers\");\n  const nextBtn=document.getElementById(\"imn-quiz-next\");\n  const resEl=document.getElementById(\"imn-quiz-result\");\n\n  lvlBtns.forEach(btn=>{\n    btn.onclick=function(){\n      level=this.dataset.level;\n      qList=data[level].slice();\n      index=0; score=0;\n      panel.style.display=\"block\";\n      imnTrack(\"quiz_start\",level);\n      loadQ();\n    };\n  });\n\n  function shuffle(a){\n    for(let i=a.length-1;i>0;i--){\n      const j=Math.floor(Math.random()*(i+1));\n      [a[i],a[j]]=[a[j],a[i]];\n    }\n    return a;\n  }\n\n  function loadQ(){\n    if(index>=qList.length) return showEnd();\n    const q=qList[index];\n    qEl.textContent=(index+1)+\". \"+q.q;\n    ansEl.innerHTML=\"\"; resEl.textContent=\"\";\n    nextBtn.style.display=\"none\";\n\n    let opts=[0,1,2];\n    shuffle(opts).forEach(i=>{\n      let b=document.createElement(\"button\");\n      b.textContent=q.a[i];\n      b.onclick=()=>handle(i===q.c);\n      ansEl.appendChild(b);\n    });\n  }\n\n  function handle(ok){\n    if(ok) score++;\n    imnTrack(\"quiz_answer\",level+\"_q\"+(index+1)+(ok?\"_ok\":\"_ko\"));\n    Array.from(ansEl.children).forEach(b=>b.disabled=true);\n    resEl.textContent=ok ? \"Bonne r\u00e9ponse !\" : \"Mauvaise r\u00e9ponse.\";\n    index++; nextBtn.style.display=\"inline-block\";\n  }\n\n  function showEnd(){\n    qEl.textContent=\"R\u00e9sultat final\";\n    ansEl.innerHTML=\"\";\n    resEl.textContent=\"Score : \"+score+\" \/ \"+qList.length;\n    nextBtn.style.display=\"none\";\n    imnTrack(\"quiz_complete\",level+\"_score_\"+score);\n  }\n\n  nextBtn.onclick=loadQ;\n})();\n<\/script>\n\n<!-- Sources :\n- Syndicat mixte Edenn\n- Donn\u00e9es publiques Natura 2000\n- Informations sur les concertations locales 2025\n-->\n\n","protected":false},"excerpt":{"rendered":"<p>Un projet d\u2019extension du site Natura 2000 des Marais de l\u2019Erdre pourrait porter la surface des zones prot\u00e9g\u00e9es de 2 700 \u00e0 3 060 hectares. Ce nouveau p\u00e9rim\u00e8tre engloberait plusieurs vallons au potentiel \u00e9cologique remarquable, confirm\u00e9s par les donn\u00e9es de cartographie recueillies en 2021 et 2022 par l\u2019Edenn, le syndicat mixte charg\u00e9 de la gestion [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":3538,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"content-type":"","footnotes":"","event_start_date":"","event_end_date":"","event_location":"","imn_event_city":"","imn_event_start_time":"","imn_event_end_time":"","imn_event_all_day":"","imn_event_address":"","imn_event_ticket_url":"","imn_event_price":"","imn_event_status":"","imn_event_organizer":"","imn_event_accessibility":""},"categories":[22],"tags":[78,2360,2362,2363,2361,2364,2346],"class_list":["post-3537","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-actualites-nantes","tag-biodiversite","tag-concertation-2025","tag-edenn","tag-marais-de-lerdre","tag-natura-2000","tag-vallons-hocmard-verdier","tag-zones-humides"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.8 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Nantes m\u00e9tropole : un projet d\u2019extension des zones humides Natura 2000 pr\u00e9sent\u00e9 aux communes - Infos M\u00e9dia Nantes, infos locales, \u00e9v\u00e9nements et actualit\u00e9 utiles \u00e0 Nantes et ses alentours<\/title>\n<meta name=\"description\" content=\"Un projet d\u2019extension pourrait porter le site Natura 2000 des Marais de l\u2019Erdre de 2 700 \u00e0 3 060 ha. 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