{"id":1025,"date":"2023-04-07T09:49:41","date_gmt":"2023-04-07T07:49:41","guid":{"rendered":"https:\/\/pedagogie.ac-lille.fr\/svt\/?p=1025"},"modified":"2023-04-12T22:10:00","modified_gmt":"2023-04-12T20:10:00","slug":"etude-de-la-dynamique-dun-ecosysteme-lexemple-des-eguerguettes","status":"publish","type":"post","link":"https:\/\/pedagogie.ac-lille.fr\/svt\/etude-de-la-dynamique-dun-ecosysteme-lexemple-des-eguerguettes\/","title":{"rendered":"\u00c9tude de la dynamique d&rsquo;un \u00e9cosyst\u00e8me : l&rsquo;exemple des Equerguettes"},"content":{"rendered":"<p>Au cours d&rsquo;une randonn\u00e9e dans leur village, les \u00e9l\u00e8ves de l&rsquo;\u00e9cole de Pressy (RPI de Bours) ont \u00e9t\u00e9 s\u00e9duits par la beaut\u00e9 d&rsquo;une petite prairie riche en fleurs et insectes(La prairie des Equerguettes). Au coeur de cette prairie, un panneau indiquait que ce type de prairie \u00e9tait menac\u00e9 de disparition dans la r\u00e9gion.<\/p>\n<style>\n       .errordiv { padding:10px; margin:10px; border: 1px solid #555555;color: #000000;background-color: #f8f8f8; width:500px; }#advanced_iframe {visibility:visible;opacity:1;vertical-align:top;}.ai-info-bottom-iframe { position: fixed; z-index: 10000; bottom:0; left: 0; margin: 0px; text-align: center; width: 100%; background-color: #ff9999; padding-left: 5px;padding-bottom: 5px; border-top: 1px solid #aaa } a.ai-bold {font-weight: bold;}#ai-layer-div-advanced_iframe p {height:100%;margin:0;padding:0}<\/style><script type=\"text\/javascript\">var ai_iframe_width_advanced_iframe = 0;var ai_iframe_height_advanced_iframe = 0;function aiReceiveMessageadvanced_iframe(event) {  aiProcessMessage(event,\"advanced_iframe\", \"true\",\"\",\"false\",\"false\");}if (window.addEventListener) {  window.addEventListener(\"message\", aiReceiveMessageadvanced_iframe);} else if (el.attachEvent)  {  el.attachEvent(\"message\", aiReceiveMessageadvanced_iframe);}var aiOnloadScrollTop=\"true\";var aiShowDebug=false;\n\t\tif (typeof aiReadyCallbacks === 'undefined') {\n\t\t\tvar aiReadyCallbacks = [];\n\t\t} else if (!(aiReadyCallbacks instanceof Array)) {\n\t\t\tvar aiReadyCallbacks = [];\n\t\t}    function aiShowIframeId(id_iframe) { jQuery(\"#\"+id_iframe).css(\"visibility\", \"visible\");    }    function aiResizeIframeHeight(height) { aiResizeIframeHeight(height,advanced_iframe); }    function aiResizeIframeHeightId(height,width,id) {aiResizeIframeHeightById(id,height);}<\/script><iframe id=\"advanced_iframe\"  name=\"advanced_iframe\"  src=\"\/\/escaut.maps.arcgis.com\/apps\/instant\/basic\/index.html?appid=6ede25c3787c46418c7f3bc229aa1477&#038;locale=fr\"  width=\"70%\"  height=\"400\"  frameborder=\"0\"  border=\"0\"  allowtransparency=\"true\"  loading=\"lazy\"  style=\";border-width: 0px;;border: none;;width:70%;;height:400px;\" ><\/iframe><script type=\"text\/javascript\">var ifrm_advanced_iframe = document.getElementById(\"advanced_iframe\");var hiddenTabsDoneadvanced_iframe = false;\nfunction resizeCallbackadvanced_iframe() {}<\/script><script type=\"text\/javascript\"><\/script><p style=\"display:block !important; visibility:visible !important;margin: -18px 14px 0 0;padding-left: 3px;padding-top:3px;background: white; overflow: hidden; position: relative; line-height:15px;width: fit-content;\"><small style=\"display:block !important;visibility:visible !important\">powered by Advanced iFrame<\/small><\/p>\n<p>Avec leur Professeur, M. Broutin, ils ont pris l&rsquo;initiative d&rsquo;interroger les \u00e9l\u00e8ves de sp\u00e9cialit\u00e9 SVT du lyc\u00e9e de secteur (lyc\u00e9e Ch\u00e2telet de Saint-Pol-sur-Ternoise) afin de leur demander si r\u00e9ellement la prairie de Bours \u00e9tait menac\u00e9e de disparition.<\/p>\n<div style=\"width: 1080px;\" class=\"wp-video\"><video class=\"wp-video-shortcode\" id=\"video-1025-1\" width=\"1080\" height=\"1920\" preload=\"metadata\" controls=\"controls\"><source type=\"video\/mp4\" src=\"http:\/\/pedagogie.ac-lille.fr\/svt\/wp-content\/uploads\/sites\/34\/2023\/04\/pierre.mp4?_=1\" \/><a href=\"http:\/\/pedagogie.ac-lille.fr\/svt\/wp-content\/uploads\/sites\/34\/2023\/04\/pierre.mp4\">http:\/\/pedagogie.ac-lille.fr\/svt\/wp-content\/uploads\/sites\/34\/2023\/04\/pierre.mp4<\/a><\/video><\/div>\n<div style=\"width: 1080px;\" class=\"wp-video\"><video class=\"wp-video-shortcode\" id=\"video-1025-2\" width=\"1080\" height=\"1920\" preload=\"metadata\" controls=\"controls\"><source type=\"video\/mp4\" src=\"http:\/\/pedagogie.ac-lille.fr\/svt\/wp-content\/uploads\/sites\/34\/2023\/04\/paul-question-.mp4?_=2\" \/><a href=\"http:\/\/pedagogie.ac-lille.fr\/svt\/wp-content\/uploads\/sites\/34\/2023\/04\/paul-question-.mp4\">http:\/\/pedagogie.ac-lille.fr\/svt\/wp-content\/uploads\/sites\/34\/2023\/04\/paul-question-.mp4<\/a><\/video><\/div>\n<div style=\"width: 1080px;\" class=\"wp-video\"><video class=\"wp-video-shortcode\" id=\"video-1025-3\" width=\"1080\" height=\"1920\" preload=\"metadata\" controls=\"controls\"><source type=\"video\/mp4\" src=\"http:\/\/pedagogie.ac-lille.fr\/svt\/wp-content\/uploads\/sites\/34\/2023\/04\/Louane-question-courte.mp4?_=3\" \/><a href=\"http:\/\/pedagogie.ac-lille.fr\/svt\/wp-content\/uploads\/sites\/34\/2023\/04\/Louane-question-courte.mp4\">http:\/\/pedagogie.ac-lille.fr\/svt\/wp-content\/uploads\/sites\/34\/2023\/04\/Louane-question-courte.mp4<\/a><\/video><\/div>\n<p>En classe, les lyc\u00e9ens en sp\u00e9cialit\u00e9 SVT ont montr\u00e9 la <strong>vuln\u00e9rabilit\u00e9<\/strong>, la <strong>valeur patrimoniale<\/strong> de cette prairie dont l&rsquo;\u00e9cosyst\u00e8me correspond \u00e0 celui d&rsquo;un coteau calcaire. Ils ont m\u00eame pr\u00e9vu \u00e0 l\u2019aide de <strong>SIG<\/strong> et de donn\u00e9es historiques l&rsquo;ann\u00e9e de sa disparition totale au profit de la for\u00eat.<\/p>\n<p><a href=\"http:\/\/pedagogie.ac-lille.fr\/svt\/wp-content\/uploads\/sites\/34\/2023\/04\/bours-PLUTA-Mathilde-1e2.mov\">analyse diachronique en vid\u00e9o :\u00a0 PLUTA Mathilde \u00e9l\u00e8ve de sp\u00e9cialit\u00e9 SVT<\/a><\/p>\n<p><a href=\"http:\/\/pedagogie.ac-lille.fr\/svt\/wp-content\/uploads\/sites\/34\/2023\/04\/article-1-Eguergettes.pdf\" target=\"_blank\" rel=\"noopener\">Article 1 (Manon Bachelez, \u00e9l\u00e8ve de Sp\u00e9cialit\u00e9 SVT)<\/a><\/p>\n<p>Par petits groupes, sur le terrain, les \u00e9l\u00e8ves ont men\u00e9 une <strong>enqu\u00eate<\/strong> <strong>botanique<\/strong>, permettant de retracer l&rsquo;histoire des pratiques d&rsquo;\u00e9levage sur le site ce qui a permis de conclure \u00e0 l&rsquo;existence d&rsquo;une pratique ancienne de <strong>broutage<\/strong> diff\u00e9renci\u00e9 par des moutons. Ils ont compar\u00e9 la <strong>biodiversit\u00e9<\/strong> sp\u00e9cifique (for\u00eat\/prairie calcicole) en fleurs, oiseaux, arthropodes, calcul\u00e9 un<strong> indice de Shannon<\/strong>, et ont \u00e9tudi\u00e9 sur le terrain certaines relations intersp\u00e9cifiques. Une <strong>\u00e9tude synchronique de l&rsquo;\u00e9cosyst\u00e8me<\/strong> a permis de confirmer la fermeture imminente de l&rsquo;\u00e9cosyst\u00e8me. Ces travaux ont d\u00e9bouch\u00e9 sur la publication d&rsquo;articles r\u00e9dig\u00e9s et de vid\u00e9os , pour sensibiliser les habitants du village et les \u00e9l\u00e8ves de l&rsquo;\u00e9cole locale (Ecole de Pressy) \u00e0 la n\u00e9cessit\u00e9 d&rsquo;une intervention humaine de d\u00e9broussaillage pour sauvegarder la prairie calcicole :<\/p>\n<p><a href=\"http:\/\/pedagogie.ac-lille.fr\/svt\/wp-content\/uploads\/sites\/34\/2023\/04\/emma-lena-elisa.mov\">Etude synchronique de l&rsquo;\u00e9cosyst\u00e8me en vid\u00e9o : Emma, L\u00e9na, Elisa(\u00e9l\u00e8ves de sp\u00e9cialit\u00e9 SVT)<\/a><\/p>\n<p><a href=\"http:\/\/pedagogie.ac-lille.fr\/svt\/wp-content\/uploads\/sites\/34\/2023\/04\/Article-2-Eguergettes.pdf\" target=\"_blank\" rel=\"noopener\">Article 2 <\/a><a href=\"http:\/\/pedagogie.ac-lille.fr\/svt\/wp-content\/uploads\/sites\/34\/2023\/04\/article-1-Eguergettes.pdf\" target=\"_blank\" rel=\"noopener\">(Manon Bachelez, \u00e9l\u00e8ve de Sp\u00e9cialit\u00e9 SVT)<\/a><\/p>\n<p>Deux chantiers de d\u00e9broussaillage ont \u00e9t\u00e9 organis\u00e9s les samedis 21 janvier et 4 f\u00e9vrier 2023. De nombreux \u00e9l\u00e8ves, parents, enseignants et habitants ont particip\u00e9.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-medium wp-image-1043\" src=\"http:\/\/pedagogie.ac-lille.fr\/svt\/wp-content\/uploads\/sites\/34\/2023\/04\/Coteau2-300x225.png\" alt=\"\" width=\"300\" height=\"225\" srcset=\"https:\/\/pedagogie.ac-lille.fr\/svt\/wp-content\/uploads\/sites\/34\/2023\/04\/Coteau2-300x225.png 300w, https:\/\/pedagogie.ac-lille.fr\/svt\/wp-content\/uploads\/sites\/34\/2023\/04\/Coteau2-1024x768.png 1024w, https:\/\/pedagogie.ac-lille.fr\/svt\/wp-content\/uploads\/sites\/34\/2023\/04\/Coteau2-768x576.png 768w, https:\/\/pedagogie.ac-lille.fr\/svt\/wp-content\/uploads\/sites\/34\/2023\/04\/Coteau2.png 1093w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" \/> <img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-medium wp-image-1042\" src=\"http:\/\/pedagogie.ac-lille.fr\/svt\/wp-content\/uploads\/sites\/34\/2023\/04\/Coteau1-224x300.png\" alt=\"D\u00e9broussaillage\" width=\"224\" height=\"300\" srcset=\"https:\/\/pedagogie.ac-lille.fr\/svt\/wp-content\/uploads\/sites\/34\/2023\/04\/Coteau1-224x300.png 224w, https:\/\/pedagogie.ac-lille.fr\/svt\/wp-content\/uploads\/sites\/34\/2023\/04\/Coteau1.png 615w\" sizes=\"auto, (max-width: 224px) 100vw, 224px\" \/><\/p>\n<p>Cette prairie est devenue d&rsquo;objet d&rsquo;\u00e9tude des \u00e9l\u00e8ves de l&rsquo;\u00e9cole, mais aussi du coll\u00e8ge proche (le coll\u00e8ge Bellimont de Pernes). Les \u00e9co-d\u00e9l\u00e9gu\u00e9s du coll\u00e8ge, emmen\u00e9s par Madame Lefebvre, envisagent une sortie au mois de mai afin de recenser les insectes pollinisateurs \u00e0 l&rsquo;aide de protocoles de sciences participatives (SPIPOLL). Le suivi annuel permettra d&rsquo;\u00e9valuer l&rsquo;impact du d\u00e9broussaillage sur la biodiversit\u00e9. D&rsquo;autre part, les \u00e9co-d\u00e9l\u00e9gu\u00e9s\u00a0 du coll\u00e8ge et de l&rsquo;\u00e9cole \u00e9changent sur le projet le temps du midi.<\/p>\n<p>Les lyc\u00e9ens seront en charge d&rsquo;\u00e9laborer un sentier p\u00e9dagogique \u00e0 destination des promeneurs.<\/p>\n<p>Un reportage de France t\u00e9l\u00e9vision permet de voir ce travail de terrain :<\/p>\n<style>\n       .errordiv { padding:10px; margin:10px; border: 1px solid #555555;color: #000000;background-color: #f8f8f8; width:500px; }#advanced_iframe_2 {visibility:visible;opacity:1;vertical-align:top;}.ai-info-bottom-iframe { position: fixed; z-index: 10000; bottom:0; left: 0; margin: 0px; text-align: center; width: 100%; background-color: #ff9999; padding-left: 5px;padding-bottom: 5px; border-top: 1px solid #aaa } a.ai-bold {font-weight: bold;}#ai-layer-div-advanced_iframe_2 p {height:100%;margin:0;padding:0}<\/style><script type=\"text\/javascript\">var ai_iframe_width_advanced_iframe_2 = 0;var ai_iframe_height_advanced_iframe_2 = 0;function aiReceiveMessageadvanced_iframe_2(event) {  aiProcessMessage(event,\"advanced_iframe_2\", \"true\",\"\",\"false\",\"false\");}if (window.addEventListener) {  window.addEventListener(\"message\", aiReceiveMessageadvanced_iframe_2);} else if (el.attachEvent)  {  el.attachEvent(\"message\", aiReceiveMessageadvanced_iframe_2);}var aiOnloadScrollTop=\"true\";var aiShowDebug=false;\n\t\tif (typeof aiReadyCallbacks === 'undefined') {\n\t\t\tvar aiReadyCallbacks = [];\n\t\t} else if (!(aiReadyCallbacks instanceof Array)) {\n\t\t\tvar aiReadyCallbacks = [];\n\t\t}    function aiShowIframeId(id_iframe) { jQuery(\"#\"+id_iframe).css(\"visibility\", \"visible\");    }    function aiResizeIframeHeight(height) { aiResizeIframeHeight(height,advanced_iframe_2); }    function aiResizeIframeHeightId(height,width,id) {aiResizeIframeHeightById(id,height);}<\/script><iframe id=\"advanced_iframe_2\"  name=\"advanced_iframe_2\"  src=\"\/\/podeduc.apps.education.fr\/video\/15131-video-f3-marc-boulangermov\/\"  width=\"100%\"  height=\"800\"  frameborder=\"0\"  border=\"0\"  allowtransparency=\"true\"  loading=\"lazy\"  style=\";border-width: 0px;;border: none;;width:100%;;height:800px;\" ><\/iframe><script type=\"text\/javascript\">var ifrm_advanced_iframe_2 = document.getElementById(\"advanced_iframe_2\");var hiddenTabsDoneadvanced_iframe_2 = false;\nfunction resizeCallbackadvanced_iframe_2() {}<\/script><script type=\"text\/javascript\"><\/script><p style=\"display:block !important; visibility:visible !important;margin: -18px 14px 0 0;padding-left: 3px;padding-top:3px;background: white; overflow: hidden; position: relative; line-height:15px;width: fit-content;\"><small style=\"display:block !important;visibility:visible !important\">powered by Advanced iFrame<\/small><\/p>\n<div class=\"su-custom-gallery su-custom-gallery-align-left su-custom-gallery-title-never su-lightbox-gallery\"><div class=\"su-custom-gallery-slide\" style=\"width:300px;height:90px\"><a href=\"https:\/\/pedagogie.ac-lille.fr\/svt\/wp-content\/uploads\/sites\/34\/2023\/04\/Coteau2.png\" target=\"_blank\" title=\"Coteau2\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/pedagogie.ac-lille.fr\/svt\/wp-content\/uploads\/sites\/34\/2023\/04\/Coteau2.png\" alt=\"Coteau2\" width=\"300\" height=\"90\" \/><span class=\"su-custom-gallery-title\">Coteau2<\/span><\/a><\/div><div class=\"su-custom-gallery-slide\" style=\"width:300px;height:90px\"><a href=\"https:\/\/pedagogie.ac-lille.fr\/svt\/wp-content\/uploads\/sites\/34\/2023\/04\/Coteau1.png\" target=\"_blank\" title=\"Coteau1\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/pedagogie.ac-lille.fr\/svt\/wp-content\/uploads\/sites\/34\/2023\/04\/Coteau1.png\" alt=\"Coteau1\" width=\"300\" height=\"90\" \/><span class=\"su-custom-gallery-title\">Coteau1<\/span><\/a><\/div><div class=\"su-clear\"><\/div><\/div>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Au cours d&rsquo;une randonn\u00e9e dans leur village, les \u00e9l\u00e8ves de l&rsquo;\u00e9cole de Pressy (RPI de Bours) ont \u00e9t\u00e9 s\u00e9duits par la beaut\u00e9 d&rsquo;une petite prairie riche en fleurs et insectes(La [&hellip;]<\/p>\n","protected":false},"author":133,"featured_media":1031,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[13,15,24,25,1,21],"tags":[],"class_list":{"0":"post-1025","1":"post","2":"type-post","3":"status-publish","4":"format-standard","5":"has-post-thumbnail","7":"category-actu","8":"category-article_une","9":"category-c3","10":"category-c4","11":"category-non-classe","12":"category-1spe","13":"czr-hentry"},"publishpress_future_action":{"enabled":false,"date":"2026-04-13 13:58:29","action":"change-status","newStatus":"draft","terms":[],"taxonomy":"category","extraData":[]},"publishpress_future_workflow_manual_trigger":{"enabledWorkflows":[]},"_links":{"self":[{"href":"https:\/\/pedagogie.ac-lille.fr\/svt\/wp-json\/wp\/v2\/posts\/1025","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/pedagogie.ac-lille.fr\/svt\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/pedagogie.ac-lille.fr\/svt\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/pedagogie.ac-lille.fr\/svt\/wp-json\/wp\/v2\/users\/133"}],"replies":[{"embeddable":true,"href":"https:\/\/pedagogie.ac-lille.fr\/svt\/wp-json\/wp\/v2\/comments?post=1025"}],"version-history":[{"count":22,"href":"https:\/\/pedagogie.ac-lille.fr\/svt\/wp-json\/wp\/v2\/posts\/1025\/revisions"}],"predecessor-version":[{"id":1051,"href":"https:\/\/pedagogie.ac-lille.fr\/svt\/wp-json\/wp\/v2\/posts\/1025\/revisions\/1051"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/pedagogie.ac-lille.fr\/svt\/wp-json\/wp\/v2\/media\/1031"}],"wp:attachment":[{"href":"https:\/\/pedagogie.ac-lille.fr\/svt\/wp-json\/wp\/v2\/media?parent=1025"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/pedagogie.ac-lille.fr\/svt\/wp-json\/wp\/v2\/categories?post=1025"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/pedagogie.ac-lille.fr\/svt\/wp-json\/wp\/v2\/tags?post=1025"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}