{"id":3176,"date":"2023-03-22T14:43:03","date_gmt":"2023-03-22T14:43:03","guid":{"rendered":"https:\/\/optmix.efno.fr\/?p=3176"},"modified":"2023-03-22T14:50:03","modified_gmt":"2023-03-22T14:50:03","slug":"debut-dune-nouvelle-experimentation-etude-de-la-degradation-de-ladn-environnemental-et-du-carbone-organique","status":"publish","type":"post","link":"https:\/\/optmix.efno.fr\/?p=3176","title":{"rendered":"D\u00e9but d&rsquo;une nouvelle exp\u00e9rimentation : \u00e9tude de la d\u00e9gradation de l&rsquo;ADN environnemental et du carbone organique"},"content":{"rendered":"<p>D\u00e9but mars, une nouvelle exp\u00e9rimentation a \u00e9t\u00e9 install\u00e9e sur 3 parcelles (un triplet pur ch\u00eane, m\u00e9lange, pur pin), mais qui est r\u00e9pliqu\u00e9e sur diff\u00e9rents sites du r\u00e9seau AnaEE. Le projet \u00e9mane d\u2019une collaboration entre la plateforme eDNA et le CEREEP Ecotron IDF, la plateforme EcoGeno et Lucie Zinger du laboratoire IBENS, et propose de comparer les dynamiques de d\u00e9gradation de l\u2019ADN environnemental (ADNe) et du Carbone organique (<sub>13<\/sub>C) dans les matrices d\u2019eau douce, de s\u00e9diments lacustres, et de sols.<\/p>\n<p>Sur OPTMix, en plus de la composition, nous testons dans cette exp\u00e9rimentation l\u2019effet de l\u2019exclusion des ongul\u00e9s, en travaillant \u00e0 l\u2019int\u00e9rieur et \u00e0 l\u2019ext\u00e9rieur des enclos.<\/p>\n<p>L&rsquo;exp\u00e9rimentation consiste \u00e0 placer 4 petits sachets de 100g de sol de la placette m\u00e9lang\u00e9e avec quelques feuilles de riz marqu\u00e9 au 13C \u00e0 5 cm dans le sol, fois 3 r\u00e9p\u00e9titions, et cela dans les diff\u00e9rentes situations (enclos et exclos, pur ch\u00eane, pur pin, m\u00e9lange). Quatre dates de pr\u00e9l\u00e8vement sont pr\u00e9vues ente mars et fin mai. En parall\u00e8le, et aux m\u00eames emplacements, quelques sachets de th\u00e9 vert seront install\u00e9s fin mars pour un suivi de la perte de masse des feuilles de th\u00e9 sur 2 dates d\u2019ici fin mai.<\/p>\n<p><a href=\"https:\/\/optmix.efno.fr\/wp-content\/uploads\/2023\/03\/expeANAEE2023_20230307_180504_small.jpg\"><img decoding=\"async\" loading=\"lazy\" class=\"alignnone size-medium wp-image-3178\" src=\"https:\/\/optmix.efno.fr\/wp-content\/uploads\/2023\/03\/expeANAEE2023_20230307_180504_small-300x169.jpg\" alt=\"\" width=\"300\" height=\"169\" srcset=\"https:\/\/optmix.efno.fr\/wp-content\/uploads\/2023\/03\/expeANAEE2023_20230307_180504_small-300x169.jpg?v=1679496526 300w, https:\/\/optmix.efno.fr\/wp-content\/uploads\/2023\/03\/expeANAEE2023_20230307_180504_small-768x432.jpg?v=1679496526 768w, https:\/\/optmix.efno.fr\/wp-content\/uploads\/2023\/03\/expeANAEE2023_20230307_180504_small-750x422.jpg?v=1679496526 750w, https:\/\/optmix.efno.fr\/wp-content\/uploads\/2023\/03\/expeANAEE2023_20230307_180504_small.jpg?v=1679496526 900w\" sizes=\"(max-width: 300px) 100vw, 300px\" \/><\/a><\/p>\n<p><a href=\"https:\/\/optmix.efno.fr\/wp-content\/uploads\/2023\/03\/expeANAEE_2023_20230307_123340_small.jpg\"><img decoding=\"async\" loading=\"lazy\" class=\"alignnone size-medium wp-image-3179\" src=\"https:\/\/optmix.efno.fr\/wp-content\/uploads\/2023\/03\/expeANAEE_2023_20230307_123340_small-142x300.jpg\" alt=\"\" width=\"142\" height=\"300\" srcset=\"https:\/\/optmix.efno.fr\/wp-content\/uploads\/2023\/03\/expeANAEE_2023_20230307_123340_small-142x300.jpg?v=1679496517 142w, https:\/\/optmix.efno.fr\/wp-content\/uploads\/2023\/03\/expeANAEE_2023_20230307_123340_small.jpg?v=1679496517 426w\" sizes=\"(max-width: 142px) 100vw, 142px\" \/><\/a> <a href=\"https:\/\/optmix.efno.fr\/wp-content\/uploads\/2023\/03\/expeANAEE_2023_20230307_123312_small.jpg\"><img decoding=\"async\" loading=\"lazy\" class=\"alignnone size-medium wp-image-3180\" src=\"https:\/\/optmix.efno.fr\/wp-content\/uploads\/2023\/03\/expeANAEE_2023_20230307_123312_small-142x300.jpg\" alt=\"\" width=\"142\" height=\"300\" srcset=\"https:\/\/optmix.efno.fr\/wp-content\/uploads\/2023\/03\/expeANAEE_2023_20230307_123312_small-142x300.jpg?v=1679496508 142w, https:\/\/optmix.efno.fr\/wp-content\/uploads\/2023\/03\/expeANAEE_2023_20230307_123312_small.jpg?v=1679496508 426w\" sizes=\"(max-width: 142px) 100vw, 142px\" \/><\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>D\u00e9but mars, une nouvelle exp\u00e9rimentation a \u00e9t\u00e9 install\u00e9e sur 3 parcelles (un triplet pur ch\u00eane, m\u00e9lange, pur pin), mais qui est r\u00e9pliqu\u00e9e sur diff\u00e9rents sites du r\u00e9seau AnaEE. Le projet \u00e9mane d\u2019une collaboration entre la plateforme eDNA et le CEREEP Ecotron IDF, la plateforme EcoGeno et Lucie Zinger du laboratoire IBENS, et propose de comparer &hellip; <\/p>\n<p><a class=\"more-link btn\" href=\"https:\/\/optmix.efno.fr\/?p=3176\">Lire la suite<\/a><\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_mi_skip_tracking":false,"_exactmetrics_sitenote_active":false,"_exactmetrics_sitenote_note":"","_exactmetrics_sitenote_category":0,"footnotes":""},"categories":[1],"tags":[],"_links":{"self":[{"href":"https:\/\/optmix.efno.fr\/index.php?rest_route=\/wp\/v2\/posts\/3176"}],"collection":[{"href":"https:\/\/optmix.efno.fr\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/optmix.efno.fr\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/optmix.efno.fr\/index.php?rest_route=\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/optmix.efno.fr\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=3176"}],"version-history":[{"count":2,"href":"https:\/\/optmix.efno.fr\/index.php?rest_route=\/wp\/v2\/posts\/3176\/revisions"}],"predecessor-version":[{"id":3184,"href":"https:\/\/optmix.efno.fr\/index.php?rest_route=\/wp\/v2\/posts\/3176\/revisions\/3184"}],"wp:attachment":[{"href":"https:\/\/optmix.efno.fr\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=3176"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/optmix.efno.fr\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=3176"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/optmix.efno.fr\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=3176"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}