{"id":23982,"date":"2025-12-16T16:10:41","date_gmt":"2025-12-16T15:10:41","guid":{"rendered":"https:\/\/www.mio.osupytheas.fr\/?p=23982"},"modified":"2025-12-16T16:24:01","modified_gmt":"2025-12-16T15:24:01","slug":"emma-jamon-haon-these","status":"publish","type":"post","link":"https:\/\/www.mio.osupytheas.fr\/fr\/emma-jamon-haon-these\/","title":{"rendered":"F\u00e9licitations \u00e0 Emma Jamon-Haon qui a soutenu sa th\u00e8se le mardi 16 d\u00e9cembre 2025"},"content":{"rendered":"\t\t<div data-elementor-type=\"wp-post\" data-elementor-id=\"23982\" class=\"elementor elementor-23982\" data-elementor-post-type=\"post\">\n\t\t\t\t<div class=\"elementor-element elementor-element-7d51ae9 e-flex e-con-boxed e-con e-parent\" data-id=\"7d51ae9\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-4be7d6c elementor-widget elementor-widget-text-editor\" data-id=\"4be7d6c\" 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 style=\"text-align: justify;\"><strong>Emma Jamon-Haon<\/strong> a soutenu sa th\u00e8se le <strong>mardi 16 d\u00e9cembre 2025<\/strong> \u00e0 <strong>14h00<\/strong> \u00e0 l\u2019Amphith\u00e9\u00e2tre OCEANOMED sur le sujet suivant : <em>H\u00e9t\u00e9rog\u00e9n\u00e9it\u00e9 des microbiotes de mangroves : d\u00e9terminants de leur biodiversit\u00e9<\/em>.<\/p><p style=\"text-align: justify;\">\u00a0<\/p><h4 style=\"text-align: justify;\"><strong>Membres du Jury<\/strong><\/h4><ul style=\"text-align: justify;\"><li>Cristiana Cravo-Laureau, Rapportrice, UPPA (IPREM), MCF<\/li><li>Lionel Ranjard, Rapporteur, INRAE (Agroecologie), DR<\/li><li>C\u00e9dric Hubas, Examinateur, MNHN (Borea), DR<\/li><li>Anne Bousquet-M\u00e9lou, Pr\u00e9sidente du jury, AMU (IMBE), DR<\/li><li>Philippe Cuny, Directeur de th\u00e8se, AMU (MIO), PR<\/li><li>C\u00e9cile Militon, Co-directrice de th\u00e8se, AMU (MIO), MCF<\/li><\/ul><h4>\u00a0<\/h4><h4 style=\"text-align: justify;\"><strong>R\u00e9sum\u00e9<\/strong><\/h4><p style=\"text-align: justify;\">Les mangroves sont des for\u00eats tropicales se d\u00e9veloppant \u00e0 l&#8217;interface entre la terre et la mer. Cette th\u00e8se, bas\u00e9e sur des jeux de donn\u00e9es de m\u00e9tabarcoding 16S et de profilages g\u00e9ochimiques de s\u00e9diments de mangroves principalement fran\u00e7aises, a eu pour objectifs principaux : (i) de mieux caract\u00e9riser la diversit\u00e9 pantropicale des microbiotes s\u00e9dimentaires de mangroves, (ii) d&#8217;identifier les grands processus \u00e9cologiques structurant leur assemblage et (iii) d&#8217;explorer leur dynamique saisonni\u00e8re dans une r\u00e9gion encore peu \u00e9tudi\u00e9e. Les r\u00e9sultats ont montr\u00e9 que les procaryotes des s\u00e9diments de mangroves appartiennent majoritairement aux Proteobacteria, Chloroflexi, Desulfobacterota, Bacteroidota, Planctomycetota, Acidobacteriota, Actinobacteriota, Firmicutes, Crenarchaeota et Thermoplasmatota. Le core microbiote n&#8217;est repr\u00e9sent\u00e9 seulement que par 1,6 \u00e0 4 % des s\u00e9quences totales, montrant l&#8217;importance et la diversit\u00e9 des procaryotes transitoires dans les mangroves. Leur diversit\u00e9 globale pr\u00e9sente une asym\u00e9trie, avec un potentiel hotspot de diversit\u00e9 microbienne dans l&#8217;Indo-Ouest Pacifique (facteur 1,5) \u2013 notamment dans les bio-r\u00e9gions d&#8217;Indo-Malaisie et d&#8217;Afrique de l&#8217;Est. Cette diversit\u00e9, lorsqu&#8217;elle est associ\u00e9e \u00e0 des mangroves c\u00f4ti\u00e8res, pr\u00e9sente un gradient latitudinal, et est en partie contr\u00f4l\u00e9e par des barri\u00e8res globales \u00e0 la dispersion. La dispersion a \u00e9galement un effet important sur la distribution des communaut\u00e9s \u00e0 l&#8217;\u00e9chelle insulaire (Guadeloupe, Martinique et Mayotte). Les microbiotes s\u00e9dimentaires de mangrove pr\u00e9sentent de fortes h\u00e9t\u00e9rog\u00e9n\u00e9it\u00e9s compositionnelles locales, li\u00e9es au contexte biog\u00e9ochimique, morphologique et anthropique inh\u00e9rent \u00e0 chaque mangrove. Dans le cas mod\u00e8le de l&#8217;estuaire de Cayenne en Guyane, la structure, la composition et la biomasse mol\u00e9culaire microbienne r\u00e9pondent de mani\u00e8re contrast\u00e9e \u00e0 des situations hydrologiques saisonni\u00e8res extr\u00eames, refl\u00e9tant l&#8217;impact potentiel des changements climatiques sur ces communaut\u00e9s. Ces travaux apportent des connaissances in\u00e9dites sur les communaut\u00e9s microbiennes des mangroves fran\u00e7aises en les repla\u00e7ant dans un contexte mondial, et contribuent plus largement \u00e0 la compr\u00e9hension de l&#8217;\u00e9cologie microbienne des \u00e9cosyst\u00e8mes de mangroves.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-04189a0 e-flex e-con-boxed e-con e-parent\" data-id=\"04189a0\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-6564d5d elementor-widget elementor-widget-image\" data-id=\"6564d5d\" 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=\"1500\" height=\"1125\" src=\"https:\/\/www.mio.osupytheas.fr\/wp-content\/uploads\/2025\/12\/theseemma2.png\" class=\"attachment-1536x1536 size-1536x1536 wp-image-24472\" alt=\"\" srcset=\"https:\/\/www.mio.osupytheas.fr\/wp-content\/uploads\/2025\/12\/theseemma2.png 1500w, https:\/\/www.mio.osupytheas.fr\/wp-content\/uploads\/2025\/12\/theseemma2-300x225.png 300w, https:\/\/www.mio.osupytheas.fr\/wp-content\/uploads\/2025\/12\/theseemma2-1024x768.png 1024w, https:\/\/www.mio.osupytheas.fr\/wp-content\/uploads\/2025\/12\/theseemma2-768x576.png 768w, https:\/\/www.mio.osupytheas.fr\/wp-content\/uploads\/2025\/12\/theseemma2-16x12.png 16w, https:\/\/www.mio.osupytheas.fr\/wp-content\/uploads\/2025\/12\/theseemma2-1320x990.png 1320w\" sizes=\"(max-width: 1500px) 100vw, 1500px\" \/>\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\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t","protected":false},"excerpt":{"rendered":"<p>Emma Jamon-Haon a soutenu sa th\u00e8se le mardi 16 d\u00e9cembre 2025 \u00e0 14h00 \u00e0 l\u2019Amphith\u00e9\u00e2tre OCEANOMED sur le sujet suivant : H\u00e9t\u00e9rog\u00e9n\u00e9it\u00e9 des microbiotes de mangroves : d\u00e9terminants de leur [&hellip;]<\/p>\n","protected":false},"author":319,"featured_media":24470,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[17,1,26],"tags":[],"class_list":["post-23982","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-a-la-une","category-actualites","category-theses"],"acf":[],"_links":{"self":[{"href":"https:\/\/www.mio.osupytheas.fr\/fr\/wp-json\/wp\/v2\/posts\/23982","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.mio.osupytheas.fr\/fr\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.mio.osupytheas.fr\/fr\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.mio.osupytheas.fr\/fr\/wp-json\/wp\/v2\/users\/319"}],"replies":[{"embeddable":true,"href":"https:\/\/www.mio.osupytheas.fr\/fr\/wp-json\/wp\/v2\/comments?post=23982"}],"version-history":[{"count":22,"href":"https:\/\/www.mio.osupytheas.fr\/fr\/wp-json\/wp\/v2\/posts\/23982\/revisions"}],"predecessor-version":[{"id":24475,"href":"https:\/\/www.mio.osupytheas.fr\/fr\/wp-json\/wp\/v2\/posts\/23982\/revisions\/24475"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.mio.osupytheas.fr\/fr\/wp-json\/wp\/v2\/media\/24470"}],"wp:attachment":[{"href":"https:\/\/www.mio.osupytheas.fr\/fr\/wp-json\/wp\/v2\/media?parent=23982"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.mio.osupytheas.fr\/fr\/wp-json\/wp\/v2\/categories?post=23982"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.mio.osupytheas.fr\/fr\/wp-json\/wp\/v2\/tags?post=23982"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}