{"id":2821,"date":"2024-06-19T18:17:02","date_gmt":"2024-06-19T16:17:02","guid":{"rendered":"https:\/\/dev.imbe.fr\/?page_id=2821"},"modified":"2025-06-18T12:09:32","modified_gmt":"2025-06-18T10:09:32","slug":"eecar-tr-communautes","status":"publish","type":"page","link":"https:\/\/www.imbe.fr\/fr\/eecar-tr-communautes\/","title":{"rendered":"EECAR-TR Ecologie des communaut\u00e9s v\u00e9g\u00e9tales et animales"},"content":{"rendered":"\t\t<div data-elementor-type=\"wp-page\" data-elementor-id=\"2821\" class=\"elementor elementor-2821\" data-elementor-post-type=\"page\">\n\t\t\t\t<div class=\"elementor-element elementor-element-2e5da2b2 e-con-full e-flex elementor-invisible e-con e-parent\" data-id=\"2e5da2b2\" data-element_type=\"container\" data-e-type=\"container\" data-settings=\"{&quot;background_background&quot;:&quot;classic&quot;,&quot;animation&quot;:&quot;fadeIn&quot;}\">\n\t\t\t\t<div class=\"elementor-element elementor-element-395211b elementor-widget elementor-widget-heading\" data-id=\"395211b\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<h1 class=\"elementor-heading-title elementor-size-default\">Nom de l'\u00e9quipe<\/h1>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-62b2adec e-con-full menuEquipe e-flex elementor-invisible e-con e-parent\" data-id=\"62b2adec\" data-element_type=\"container\" data-e-type=\"container\" data-settings=\"{&quot;background_background&quot;:&quot;classic&quot;,&quot;animation&quot;:&quot;fadeInUp&quot;,&quot;sticky&quot;:&quot;top&quot;,&quot;sticky_offset&quot;:94,&quot;sticky_on&quot;:[&quot;desktop&quot;,&quot;laptop&quot;,&quot;tablet&quot;,&quot;mobile&quot;],&quot;sticky_effects_offset&quot;:0,&quot;sticky_anchor_link_offset&quot;:0}\">\n\t\t<div class=\"elementor-element elementor-element-dbbd349 e-con-full e-flex e-con e-child\" 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href=\"https:\/\/www.imbe.fr\/eecar-tr-communautes\/\" >\n\t\t\t\t\t\t\tPr\u00e9sentation - TR Ecologie des communaut\u00e9s\t\t\t\t\t\t<\/a>\n\t\t\t\t\t<\/h3>\n\t\t\t\t\n\t\t\t\t\n\t\t\t<\/div>\n\t\t\t\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-a53777d e-con-full e-flex e-con e-child\" data-id=\"a53777d\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-30454d11 elementor-view-default elementor-position-block-start elementor-mobile-position-block-start elementor-widget elementor-widget-icon-box\" data-id=\"30454d11\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"icon-box.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"elementor-icon-box-wrapper\">\n\n\t\t\t\t\t\t<div class=\"elementor-icon-box-icon\">\n\t\t\t\t<a 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class=\"elementor-element elementor-element-7b6a7780 e-con-full e-flex e-con e-child\" data-id=\"7b6a7780\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-76f2cecf elementor-widget elementor-widget-shortcode\" data-id=\"76f2cecf\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"shortcode.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"elementor-shortcode\"><nav aria-label=\"breadcrumbs\">\n            <div class=\"breadcrumb-container theme1\">\n                <ol>\n                                    <\/ol>\n            <\/div>\n        <\/nav>    <script type=\"application\/ld+json\">\n        {\n            \"@context\": \"http:\/\/schema.org\",\n            \"@type\": \"BreadcrumbList\",\n            \"itemListElement\": [\n                            ]\n        }\n    <\/script>\n   \n    <script>\n            <\/script>\n<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-61eec943 e-con-full e-flex e-con e-parent\" data-id=\"61eec943\" data-element_type=\"container\" data-e-type=\"container\" id=\"presentation\">\n\t\t<div class=\"elementor-element elementor-element-46c6f9f5 e-con-full e-flex elementor-invisible e-con e-child\" data-id=\"46c6f9f5\" data-element_type=\"container\" data-e-type=\"container\" data-settings=\"{&quot;animation&quot;:&quot;fadeInUp&quot;}\">\n\t\t\t\t<div class=\"elementor-element elementor-element-bd01380 elementor-position-inline-start elementor-mobile-position-inline-start elementor-view-default elementor-widget elementor-widget-icon-box\" data-id=\"bd01380\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"icon-box.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"elementor-icon-box-wrapper\">\n\n\t\t\t\t\t\t<div class=\"elementor-icon-box-icon\">\n\t\t\t\t<span  class=\"elementor-icon\">\n\t\t\t\t<i aria-hidden=\"true\" class=\"far fa-list-alt\"><\/i>\t\t\t\t<\/span>\n\t\t\t<\/div>\n\t\t\t\n\t\t\t\t\t\t<div class=\"elementor-icon-box-content\">\n\n\t\t\t\t\t\t\t\t\t<h2 class=\"elementor-icon-box-title\">\n\t\t\t\t\t\t<span  >\n\t\t\t\t\t\t\tTh\u00e8me de recherche - Ecologie des communaut\u00e9s v\u00e9g\u00e9tales et animales\t\t\t\t\t\t<\/span>\n\t\t\t\t\t<\/h2>\n\t\t\t\t\n\t\t\t\t\n\t\t\t<\/div>\n\t\t\t\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-748a7427 elementor-widget elementor-widget-text-editor\" data-id=\"748a7427\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>En \u00e9cologie des communaut\u00e9s v\u00e9g\u00e9tales et animales, nos recherches visent \u00e0 mieux appr\u00e9hender les r\u00e8gles d\u2019assemblage et processus de coexistence qui expliquent le haut niveau de biodiversit\u00e9 des \u00e9cosyst\u00e8mes m\u00e9diterran\u00e9ens et les facteurs \u00e0 l\u2019origine de la tr\u00e8s faible r\u00e9silience de ces communaut\u00e9s suite \u00e0 des perturbations anthropiques notamment via des approches en \u00e9cologie historique incluant notamment l\u2019\u00e9tude des banques de graines viables du sol, v\u00e9ritable m\u00e9moire s\u00e9minale des communaut\u00e9s v\u00e9g\u00e9tales. Nos approches sont en tr\u00e8s grande majorit\u00e9 exp\u00e9rimentales et accoud\u00e9es \u00e0 des op\u00e9rations concr\u00e8tes de restauration \u00e9cologique qui permettent la manipulation <i>in situ<\/i> et \u00e0 grande \u00e9chelle des variables abiotiques et biotiques. Elles sont aussi men\u00e9es <i>ex situ<\/i>, en m\u00e9socosmes pour renforcer l\u2019appr\u00e9hension de certains liens de causalit\u00e9 particuliers plantes-plantes ou arthropodes-plantes.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-1ba0c3ad e-con-full e-flex elementor-invisible e-con e-child\" data-id=\"1ba0c3ad\" data-element_type=\"container\" data-e-type=\"container\" data-settings=\"{&quot;animation&quot;:&quot;fadeInUp&quot;}\">\n\t\t\t\t<div class=\"elementor-element elementor-element-33ad4ac6 elementor-widget elementor-widget-image\" data-id=\"33ad4ac6\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img fetchpriority=\"high\" decoding=\"async\" width=\"800\" height=\"599\" src=\"https:\/\/www.imbe.fr\/wp-content\/uploads\/2024\/06\/EECAR_relevevegetation-Crau-e1718883993890-1024x767.jpg\" class=\"attachment-large size-large wp-image-2933\" alt=\"Relev\u00e9 de v\u00e9g\u00e9tation sur un coussouls (Plaine de la Crau) @Gr\u00e9gory Loucougaray\" srcset=\"https:\/\/www.imbe.fr\/wp-content\/uploads\/2024\/06\/EECAR_relevevegetation-Crau-e1718883993890-1024x767.jpg 1024w, https:\/\/www.imbe.fr\/wp-content\/uploads\/2024\/06\/EECAR_relevevegetation-Crau-e1718883993890-300x225.jpg 300w, https:\/\/www.imbe.fr\/wp-content\/uploads\/2024\/06\/EECAR_relevevegetation-Crau-e1718883993890-768x575.jpg 768w, https:\/\/www.imbe.fr\/wp-content\/uploads\/2024\/06\/EECAR_relevevegetation-Crau-e1718883993890-16x12.jpg 16w, https:\/\/www.imbe.fr\/wp-content\/uploads\/2024\/06\/EECAR_relevevegetation-Crau-e1718883993890-1320x989.jpg 1320w, https:\/\/www.imbe.fr\/wp-content\/uploads\/2024\/06\/EECAR_relevevegetation-Crau-e1718883993890.jpg 1526w\" sizes=\"(max-width: 800px) 100vw, 800px\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-46a56ea e-con-full e-flex e-con e-parent\" data-id=\"46a56ea\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t<div class=\"elementor-element elementor-element-073d2b7 e-con-full e-flex elementor-invisible e-con e-child\" data-id=\"073d2b7\" data-element_type=\"container\" data-e-type=\"container\" data-settings=\"{&quot;animation&quot;:&quot;fadeInUp&quot;}\">\n\t\t\t\t<div class=\"elementor-element elementor-element-72f26d7 elementor-position-inline-start elementor-mobile-position-inline-start elementor-view-default elementor-widget elementor-widget-icon-box\" data-id=\"72f26d7\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"icon-box.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"elementor-icon-box-wrapper\">\n\n\t\t\t\t\t\t<div class=\"elementor-icon-box-icon\">\n\t\t\t\t<span  class=\"elementor-icon\">\n\t\t\t\t<i aria-hidden=\"true\" class=\"fas fa-star\"><\/i>\t\t\t\t<\/span>\n\t\t\t<\/div>\n\t\t\t\n\t\t\t\t\t\t<div class=\"elementor-icon-box-content\">\n\n\t\t\t\t\t\t\t\t\t<h2 class=\"elementor-icon-box-title\">\n\t\t\t\t\t\t<span  >\n\t\t\t\t\t\t\tExemple de recherche r\u00e9cente - Impact de la colonisation des parcours pastoraux par des pins noirs exotiques sur les pollinisateurs \t\t\t\t\t\t<\/span>\n\t\t\t\t\t<\/h2>\n\t\t\t\t\n\t\t\t\t\n\t\t\t<\/div>\n\t\t\t\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-a806a40 elementor-widget elementor-widget-text-editor\" data-id=\"a806a40\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p><b>Quel est l&#8217;impact de la colonisation des parcours pastoraux du causse M\u00e9jean par les pins sur les pollinisateurs ?<\/b><\/p><p>Dans de nombreuses r\u00e9gions, des monocultures de pins remplacent des \u00e9cosyst\u00e8mes ouverts, transformant les \u00e9cosyst\u00e8mes en profondeur. L\u2019augmentation du couvert arbor\u00e9 affecte notamment la diversit\u00e9 des plantes herbac\u00e9es et a des r\u00e9percussions importantes sur les insectes, en particulier les pollinisateurs. Dans ce contexte, l&#8217;objectif principal de cette \u00e9tude est de comprendre comment la colonisation des pelouses par les pins issus de plantations de <em>Pinus nigra<\/em> affecte la biodiversit\u00e9 et la pollinisation. Pour cela, nous avons \u00e9tudi\u00e9 12 sites sur le Causse M\u00e9jean chacun comportant une zone de <strong>steppe m\u00e9diterran\u00e9o-montagnarde<\/strong> (code EUNIS E1.51), une plantation ainsi que deux zones de steppe plus (&gt;50% de recouvrement en pins) ou moins (&lt;50%) colonis\u00e9es par les pins.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-3022ffd elementor-widget elementor-widget-text-editor\" data-id=\"3022ffd\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p>Nous avons constat\u00e9 que le couvert herbac\u00e9 <strong>diminue<\/strong> avec l&#8217;augmentation du couvert arbor\u00e9, et le m\u00eame sch\u00e9ma a \u00e9t\u00e9 observ\u00e9 pour la richesse et la fr\u00e9quence des esp\u00e8ces de plantes herbac\u00e9es, ainsi que pour <strong>la richesse et l&#8217;abondance des interactions plantes-pollinisateurs<\/strong>. La composition en esp\u00e8ces herbac\u00e9es est similaire dans la steppe et les zones colonis\u00e9es et seulement diff\u00e9rente dans les plantations. Diff\u00e9rents groupes d\u2019insectes ont des sensibilit\u00e9s diff\u00e9rentes \u00e0 l&#8217;augmentation du couvert arbor\u00e9 : <strong>les interactions plantes-mouches, -syrphes et \u2013fourmis sont plus nombreuses dans les pelouses<\/strong> que dans les plantations (et interm\u00e9diaire dans les zones colonis\u00e9es).\u00a0 <strong>Les interactions plantes-bombyles et les -abeilles domestiques diminuent elles aussi avec la colonisation<\/strong> et ces groupes sont absents des plantations. <strong>Les abeilles sauvages et les col\u00e9opt\u00e8res ne semblent pas sensibles aux variations de couvert arbor\u00e9.<\/strong> Alors qu\u2019il est d\u00e9j\u00e0 bien connu que les plantations de pins doivent \u00eatre \u00e9vit\u00e9es dans les \u00e9cosyst\u00e8mes ouverts, nos r\u00e9sultats soulignent que la colonisation de ces pins en dehors des plantations est \u00e0 contr\u00f4ler absolument. En effet, m\u00eame si le couvert arbor\u00e9 a peu d\u2019impact sur la composition v\u00e9g\u00e9tale des communaut\u00e9s de steppes \u00e0 court terme, ce dernier a un effet non n\u00e9gligeable sur les interactions plante-pollinisateur.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-f7ea904 e-con-full e-flex elementor-invisible e-con e-child\" data-id=\"f7ea904\" data-element_type=\"container\" data-e-type=\"container\" data-settings=\"{&quot;animation&quot;:&quot;fadeInUp&quot;}\">\n\t\t\t\t<div class=\"elementor-element elementor-element-3d68df9 elementor-widget elementor-widget-image\" data-id=\"3d68df9\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t<figure class=\"wp-caption\">\n\t\t\t\t\t\t\t\t\t\t<img decoding=\"async\" width=\"800\" height=\"536\" src=\"https:\/\/www.imbe.fr\/wp-content\/uploads\/2025\/06\/EECAR_Causse-pollinisateurs2.jpg\" class=\"attachment-large size-large wp-image-9125\" alt=\"\u00c9tude des pollinisateurs sur le Causse M\u00e9jean @Elise Buisson\" srcset=\"https:\/\/www.imbe.fr\/wp-content\/uploads\/2025\/06\/EECAR_Causse-pollinisateurs2.jpg 829w, https:\/\/www.imbe.fr\/wp-content\/uploads\/2025\/06\/EECAR_Causse-pollinisateurs2-300x201.jpg 300w, https:\/\/www.imbe.fr\/wp-content\/uploads\/2025\/06\/EECAR_Causse-pollinisateurs2-768x514.jpg 768w, https:\/\/www.imbe.fr\/wp-content\/uploads\/2025\/06\/EECAR_Causse-pollinisateurs2-18x12.jpg 18w\" sizes=\"(max-width: 800px) 100vw, 800px\" \/>\t\t\t\t\t\t\t\t\t\t\t<figcaption class=\"widget-image-caption wp-caption-text\">A. \u00c9chantillonnage des pollinisateurs et B. \u00c9chantillonnage de la flore sur des pelouses steppiques du Causse M\u00e9jean ; C. Pelouse envahie par des pins ; D. Plantation de pins noirs d'Autriche. @Elise Buisson<\/figcaption>\n\t\t\t\t\t\t\t\t\t\t<\/figure>\n\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-f8d5271 e-con-full e-flex e-con e-parent\" data-id=\"f8d5271\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t<div class=\"elementor-element elementor-element-cc7918a e-con-full e-flex elementor-invisible e-con e-child\" data-id=\"cc7918a\" data-element_type=\"container\" data-e-type=\"container\" data-settings=\"{&quot;animation&quot;:&quot;fadeInUp&quot;}\">\n\t\t\t\t<div class=\"elementor-element elementor-element-5f58797 elementor-position-inline-start elementor-mobile-position-inline-start elementor-view-default elementor-widget elementor-widget-icon-box\" data-id=\"5f58797\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"icon-box.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"elementor-icon-box-wrapper\">\n\n\t\t\t\t\t\t<div class=\"elementor-icon-box-icon\">\n\t\t\t\t<span  class=\"elementor-icon\">\n\t\t\t\t<i aria-hidden=\"true\" class=\"fas fa-star\"><\/i>\t\t\t\t<\/span>\n\t\t\t<\/div>\n\t\t\t\n\t\t\t\t\t\t<div class=\"elementor-icon-box-content\">\n\n\t\t\t\t\t\t\t\t\t<h2 class=\"elementor-icon-box-title\">\n\t\t\t\t\t\t<span  >\n\t\t\t\t\t\t\tExemple de recherche r\u00e9cente - L\u2019empreinte humaine sur les communaut\u00e9s v\u00e9g\u00e9tales est-elle ind\u00e9l\u00e9bile ? \t\t\t\t\t\t<\/span>\n\t\t\t\t\t<\/h2>\n\t\t\t\t\n\t\t\t\t\n\t\t\t<\/div>\n\t\t\t\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-bcecc60 elementor-widget elementor-widget-text-editor\" data-id=\"bcecc60\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p><b>Les activit\u00e9s humaines transforment et ont transform\u00e9 les communaut\u00e9s v\u00e9g\u00e9tales mais pour combien de temps l\u2019influence de ces perturbations sera-t-elle perceptible m\u00eame apr\u00e8s leur abandon ?<\/b><\/p><p><b>Mesurer les impacts de l\u2019Homme sur les \u00e9cosyst\u00e8mes et leurs cons\u00e9quences sur le long terme est un des axes de recherches de l\u2019\u00e9cologie historique<\/b> en compl\u00e9ment de la pal\u00e9o\u00e9cologie. En effet, il ne s\u2019agit pas seulement d\u2019identifier les diff\u00e9rents types de perturbations pass\u00e9es, mais aussi, de mesurer leurs \u00e9ventuelles cons\u00e9quences sur le fonctionnement des \u00e9cosyst\u00e8mes actuels. Les communaut\u00e9s v\u00e9g\u00e9tales sont en effet assez sensibles aux perturbations tr\u00e8s anciennes et peuvent encore, dans certains cas, pr\u00e9senter aujourd\u2019hui des compositions, richesses et diversit\u00e9s sp\u00e9cifiques sous l\u2019influence de pratiques pass\u00e9es et pourtant abandonn\u00e9es depuis des mill\u00e9naires. Thierry Dutoit l\u2019explique <a href=\"https:\/\/www.canal-u.tv\/chaines\/au\/midisciences-2023-l-ecologie-historique-un-voyage-dans-le-temps-pour-mieux-comprendre-et\" target=\"_blank\" rel=\"noopener\">ici<\/a>.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-22438b5 elementor-widget elementor-widget-text-editor\" data-id=\"22438b5\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t<p><b>Nous avons ainsi mesur\u00e9 l\u2019impact de la pr\u00e9sence d\u2019enclos pastoraux pr\u00e9sents dans la plaine de Crau (Sud-est de la France) depuis l\u2019\u00e9poque Romaine et abandonn\u00e9s au fil des si\u00e8cles. <\/b>Nos r\u00e9sultats ont d\u00e9montr\u00e9 que ces enclos influencent encore la fertilit\u00e9 du sol, la composition et la richesse de la v\u00e9g\u00e9tation actuelle m\u00eame apr\u00e8s plus de 1 500 ans d\u2019abandon (<a href=\"https:\/\/theconversation.com\/dans-la-plaine-de-crau-lempreinte-des-romains-se-voit-encore-sur-le-sol-et-la-vegetation-151798\" target=\"_blank\" rel=\"noopener\">lien<\/a>). La persistance de ces effets n\u2019est alors pas \u00e0 relier \u00e0 une longue viabilit\u00e9 des graines de la v\u00e9g\u00e9tation des anciens enclos dans le sol mais \u00e0 une tr\u00e8s lente \u00e9volution de la fertilit\u00e9 du sol en lien avec un apport de mati\u00e8res organiques tr\u00e8s important lors de l\u2019utilisation de ces enclos pour concentrer les troupeaux (<a href=\"https:\/\/doi.org\/10.1007\/s10021-020-00581-w\" target=\"_blank\" rel=\"noopener\">lien<\/a>).<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-98f73d3 e-con-full e-flex elementor-invisible e-con e-child\" data-id=\"98f73d3\" data-element_type=\"container\" data-e-type=\"container\" data-settings=\"{&quot;animation&quot;:&quot;fadeInUp&quot;}\">\n\t\t\t\t<div class=\"elementor-element elementor-element-a7b9d78 elementor-widget elementor-widget-image\" data-id=\"a7b9d78\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t\t\t\t\t<figure class=\"wp-caption\">\n\t\t\t\t\t\t\t\t\t\t<img decoding=\"async\" width=\"800\" height=\"601\" src=\"https:\/\/www.imbe.fr\/wp-content\/uploads\/2024\/07\/EECAR_bergeries-romaines-1024x769.jpg\" class=\"attachment-large size-large wp-image-4291\" alt=\"Ruines de bergeries dans la Crau, de nos jours \u00e0 l&#039;\u00e9poque romaine. @Fr\u00e9d\u00e9ric Henry\" srcset=\"https:\/\/www.imbe.fr\/wp-content\/uploads\/2024\/07\/EECAR_bergeries-romaines-1024x769.jpg 1024w, https:\/\/www.imbe.fr\/wp-content\/uploads\/2024\/07\/EECAR_bergeries-romaines-300x225.jpg 300w, https:\/\/www.imbe.fr\/wp-content\/uploads\/2024\/07\/EECAR_bergeries-romaines-768x577.jpg 768w, https:\/\/www.imbe.fr\/wp-content\/uploads\/2024\/07\/EECAR_bergeries-romaines-16x12.jpg 16w, https:\/\/www.imbe.fr\/wp-content\/uploads\/2024\/07\/EECAR_bergeries-romaines.jpg 1039w\" sizes=\"(max-width: 800px) 100vw, 800px\" \/>\t\t\t\t\t\t\t\t\t\t\t<figcaption class=\"widget-image-caption wp-caption-text\">Ruines de bergeries dans la Crau, de nos jours \u00e0 l'\u00e9poque romaine. @Fr\u00e9d\u00e9ric Henry<\/figcaption>\n\t\t\t\t\t\t\t\t\t\t<\/figure>\n\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-77798d9a e-con-full e-flex elementor-invisible e-con e-parent\" data-id=\"77798d9a\" data-element_type=\"container\" data-e-type=\"container\" id=\"themes\" data-settings=\"{&quot;animation&quot;:&quot;fadeInUp&quot;}\">\n\t\t\t\t<div class=\"elementor-element elementor-element-4b6a52d9 elementor-position-inline-start elementor-mobile-position-inline-start elementor-view-default elementor-widget elementor-widget-icon-box\" data-id=\"4b6a52d9\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"icon-box.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div 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data-thumbnail=\"https:\/\/www.imbe.fr\/wp-content\/uploads\/2024\/06\/EECAR_compoll1-Crau-scaled.jpg\" data-width=\"2560\" data-height=\"1707\" aria-label=\"Echantillonnage des pollinisateurs sur Euphorbia segueiriana, Plaine de Crau. @Elise Buisson.\" role=\"img\" ><\/div>\n\t\t\t\t\t\t\t\t\t\t\t<div class=\"elementor-gallery-item__overlay\"><\/div>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/a>\n\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t","protected":false},"excerpt":{"rendered":"<p>Pr\u00e9sentation &#8211; TR Ecologie des communaut\u00e9s \u00c9quipe Th\u00e8mes de recherche Galerie Th\u00e8me de recherche &#8211; Ecologie des communaut\u00e9s v\u00e9g\u00e9tales et animales En \u00e9cologie des communaut\u00e9s v\u00e9g\u00e9tales et animales, nos recherches [&hellip;]<\/p>\n","protected":false},"author":232,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"_acf_changed":false,"footnotes":""},"class_list":["post-2821","page","type-page","status-publish","hentry"],"acf":[],"_links":{"self":[{"href":"https:\/\/www.imbe.fr\/fr\/wp-json\/wp\/v2\/pages\/2821","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.imbe.fr\/fr\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/www.imbe.fr\/fr\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/www.imbe.fr\/fr\/wp-json\/wp\/v2\/users\/232"}],"replies":[{"embeddable":true,"href":"https:\/\/www.imbe.fr\/fr\/wp-json\/wp\/v2\/comments?post=2821"}],"version-history":[{"count":89,"href":"https:\/\/www.imbe.fr\/fr\/wp-json\/wp\/v2\/pages\/2821\/revisions"}],"predecessor-version":[{"id":9131,"href":"https:\/\/www.imbe.fr\/fr\/wp-json\/wp\/v2\/pages\/2821\/revisions\/9131"}],"wp:attachment":[{"href":"https:\/\/www.imbe.fr\/fr\/wp-json\/wp\/v2\/media?parent=2821"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}