{"id":74494,"date":"2024-11-04T16:04:55","date_gmt":"2024-11-04T15:04:55","guid":{"rendered":"https:\/\/www.ubfc.fr\/?p=74494"},"modified":"2024-11-04T16:45:40","modified_gmt":"2024-11-04T15:45:40","slug":"lanthropocene-un-objet-frontiere-qui-signifie-plus-quune-tranche-de-temps-geologique","status":"publish","type":"post","link":"https:\/\/www.ubfc.fr\/en\/lanthropocene-un-objet-frontiere-qui-signifie-plus-quune-tranche-de-temps-geologique\/","title":{"rendered":"L\u2019anthropoc\u00e8ne, un objet fronti\u00e8re qui signifie plus qu\u2019une tranche de temps g\u00e9ologique"},"content":{"rendered":"\t\t<div data-elementor-type=\"wp-post\" data-elementor-id=\"74494\" class=\"elementor elementor-74494\" data-elementor-post-type=\"post\">\n\t\t\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-fb05c9c elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"fb05c9c\" data-element_type=\"section\" data-e-type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-99e6612\" data-id=\"99e6612\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-dbe4486 elementor-widget elementor-widget-text-editor\" data-id=\"dbe4486\" 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><a href=\"https:\/\/theconversation.com\/profiles\/luc-aquilina-1389728\">Luc Aquilina<\/a>, <em><a href=\"https:\/\/theconversation.com\/institutions\/universite-de-rennes-1-universite-de-rennes-2399\">Universit\u00e9 de Rennes\u00a01 &#8211; Universit\u00e9 de Rennes<\/a><\/em>; <a href=\"https:\/\/theconversation.com\/profiles\/catherine-jeandel-2236158\">Catherine Jeandel<\/a>, <em><a href=\"https:\/\/theconversation.com\/institutions\/centre-national-de-la-recherche-scientifique-cnrs-2192\">Centre national de la recherche scientifique (CNRS)<\/a><\/em>; <a href=\"https:\/\/theconversation.com\/profiles\/clement-poirier-2236181\">Cl\u00e9ment Poirier<\/a>, <em><a href=\"https:\/\/theconversation.com\/institutions\/universite-de-caen-normandie-2555\">Universit\u00e9 de Caen Normandie<\/a><\/em>; <a href=\"https:\/\/theconversation.com\/profiles\/clement-roques-1440123\">Cl\u00e9ment Roques<\/a>, <em><a href=\"https:\/\/theconversation.com\/institutions\/universite-de-neuchatel-2562\">Universit\u00e9 de Neuch\u00e2tel<\/a><\/em>; <a href=\"https:\/\/theconversation.com\/profiles\/jacques-grinevald-2236179\">Jacques Grinevald<\/a>, <em><a href=\"https:\/\/theconversation.com\/institutions\/graduate-institute-institut-de-hautes-etudes-internationales-et-du-developpement-iheid-2905\">Graduate Institute \u2013 Institut de hautes \u00e9tudes internationales et du d\u00e9veloppement (IHEID)<\/a><\/em>; <a href=\"https:\/\/theconversation.com\/profiles\/jan-zalasiewicz-153171\">Jan Zalasiewicz<\/a>, <em><a href=\"https:\/\/theconversation.com\/institutions\/university-of-leicester-1053\">University of Leicester<\/a><\/em>; <a href=\"https:\/\/theconversation.com\/profiles\/jerome-gaillardet-2236156\">J\u00e9r\u00f4me Gaillardet<\/a>, <em><a href=\"https:\/\/theconversation.com\/institutions\/institut-de-physique-du-globe-de-paris-ipgp-2350\">Institut de physique du globe de Paris (IPGP)<\/a><\/em>; <a href=\"https:\/\/theconversation.com\/profiles\/martin-j-head-1518648\">Martin J. Head<\/a>, <em><a href=\"https:\/\/theconversation.com\/institutions\/brock-university-1340\">Brock University<\/a><\/em>; <a href=\"https:\/\/theconversation.com\/profiles\/michel-magny-2236172\">Michel Magny<\/a>, <em><a href=\"https:\/\/theconversation.com\/institutions\/universite-de-franche-comte-ubfc-2353\">Universit\u00e9 de Franche-Comt\u00e9 \u2013 UBFC<\/a><\/em>; <a href=\"https:\/\/theconversation.com\/profiles\/nathanael-wallenhorst-1014338\">Nathana\u00ebl Wallenhorst<\/a>, <em><a href=\"https:\/\/theconversation.com\/institutions\/universite-de-haute-alsace-uha-2472\">Universit\u00e9 de Haute-Alsace (UHA)<\/a><\/em> et <a href=\"https:\/\/theconversation.com\/profiles\/simon-turner-1382166\">Simon Turner<\/a>, <em><a href=\"https:\/\/theconversation.com\/institutions\/ucl-1885\">UCL<\/a><\/em><\/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<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-7ce57d3 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"7ce57d3\" data-element_type=\"section\" data-e-type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-c0611d5\" data-id=\"c0611d5\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-155a16f elementor-widget elementor-widget-text-editor\" data-id=\"155a16f\" 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<h5><strong>M\u00eame si le groupe de travail de la Commission internationale de stratigraphie a refus\u00e9 la proposition de cr\u00e9er une nouvelle p\u00e9riode g\u00e9ologique nomm\u00e9e anthropoc\u00e8ne, le d\u00e9bat n\u2019est pas clos pour autant. Le concept reste pr\u00e9cieux pour d\u00e9crire notre \u00e9poque, et permet de f\u00e9d\u00e9rer des communaut\u00e9s scientifiques distinctes.<\/strong><\/h5>\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<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-16e1eb0 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"16e1eb0\" data-element_type=\"section\" data-e-type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-cc70b88\" data-id=\"cc70b88\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-2c33397 elementor-widget elementor-widget-text-editor\" data-id=\"2c33397\" 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>Les g\u00e9ologues d\u00e9coupent l\u2019histoire de la Terre en \u00ab\u00a0tranches de temps\u00a0\u00bb chronologiques qu\u2019on appelle la \u00ab\u00a0chronostratigraphie\u00a0\u00bb. Depuis 20\u00a0ans, l\u2019observation de l\u2019impact des activit\u00e9s humaines sur le syst\u00e8me Terre a conduit \u00e0 penser que nous \u00e9tions entr\u00e9s dans une nouvelle \u00e9poque g\u00e9ologique\u00a0: l\u2019anthropoc\u00e8ne.<\/p><p>La d\u00e9finition de cette derni\u00e8re a fait l\u2019objet d\u2019un groupe de travail cr\u00e9\u00e9 au sein de la Commission internationale de stratigraphie (CIS), l\u2019instance qui d\u00e9cide de la chronologie g\u00e9ologique. La proposition du groupe de travail de cr\u00e9er une nouvelle \u00e9poque \u00e0 partir de 1952 a \u00e9t\u00e9 <a href=\"https:\/\/www.terrestres.org\/2024\/04\/08\/qui-a-tue-lanthropocene\/\">refus\u00e9e par la CIS le 5\u00a0mars 2024<\/a>.<\/p><p>Nous ne reprendrons pas ici le d\u00e9tail des <a href=\"https:\/\/theconversation.com\/anthropocene-une-nouvelle-ere-geologique-73336\">arguments techniques sur lesquels se base ce refus<\/a>. Ils ont \u00e9t\u00e9 contr\u00e9s un \u00e0 un, par le <a href=\"https:\/\/eartharxiv.org\/repository\/view\/6853\/\">groupe de travail sur l\u2019anthropoc\u00e8ne<\/a>, puis par des <a href=\"https:\/\/doi.org\/10.18814\/epiiugs\/2023\/023025\">chercheurs ext\u00e9rieurs<\/a> \u2013 et <a href=\"https:\/\/theconversation.com\/what-the-anthropocenes-critics-overlook-and-why-it-really-should-be-a-new-geological-epoch-225493\">cela \u00e0 plusieurs reprises<\/a>.<\/p><p>Notre question est\u00a0: le d\u00e9bat est-il clos\u00a0? La r\u00e9ponse que viennent d\u2019apporter <a href=\"https:\/\/doi.org\/10.1038\/d41586-024-02712-y\">plus de 50 scientifiques dans la revue <em>Nature<\/em><\/a> est\u00a0: non\u00a0!<\/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<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-0816278 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"0816278\" data-element_type=\"section\" data-e-type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-185e024\" data-id=\"185e024\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-0b8c1d2 elementor-widget elementor-widget-text-editor\" data-id=\"0b8c1d2\" 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<h2>Un concept qui f\u00e9d\u00e8re les diff\u00e9rentes communaut\u00e9s scientifiques<\/h2><p>Au-del\u00e0 de la communaut\u00e9 stratigraphique, le concept d\u2019anthropoc\u00e8ne est reconnu par plusieurs communaut\u00e9s. Il est couramment repris par l\u2019ensemble des scientifiques qui travaillent sur le \u00ab\u00a0syst\u00e8me Terre\u00a0\u00bb (g\u00e9ologues, climatologues, hydrologues, \u00e9cologues, p\u00e9dologues\u2026). Il est devenu un <a href=\"https:\/\/www.tandfonline.com\/doi\/full\/10.1080\/09644016.2021.1892120\">cadre tr\u00e8s utilis\u00e9 par les sciences humaines et sociales<\/a>.<\/p><p>Plus largement, le concept a d\u00e9pass\u00e9 la sph\u00e8re des scientifiques pour se r\u00e9pandre dans les m\u00e9dias, le langage politique et territorial. C\u2019est, enfin, un puissant <a href=\"https:\/\/www.linfodurable.fr\/culture\/paul-ardenne-lart-de-lanthropocene-est-un-art-de-combat-8667\">ressort artistique<\/a>.<\/p><p>Surtout, pour ces nombreuses communaut\u00e9s, l\u2019anthropoc\u00e8ne est devenu un concept capital, agr\u00e9gateur de sciences \u00e9loign\u00e9es les unes des autres. C\u2019est devenu une matrice pour penser le monde de fa\u00e7on renouvel\u00e9e et pour envisager de nouvelles m\u00e9thodes de faire de la science, de l\u2019art et des politiques publiques.<\/p><p>Malgr\u00e9 la d\u00e9cision de la CIS, l\u2019anthropoc\u00e8ne <a href=\"https:\/\/theconversation.com\/lanthropocene-mort-et-enterre-pour-les-geologues-et-sil-survivait-malgre-tout-237525\">continuera donc \u00e0 vivre au sein de ces communaut\u00e9s<\/a>.<\/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<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-e8ae6f0 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"e8ae6f0\" data-element_type=\"section\" data-e-type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-5c11305\" data-id=\"5c11305\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-95b67b3 elementor-widget elementor-widget-text-editor\" data-id=\"95b67b3\" 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<h2>Des p\u00e9riodes r\u00e9guli\u00e8rement red\u00e9finies<\/h2><p>Les unit\u00e9s de temps chronostratigraphiques (notamment les p\u00e9riodes subdivis\u00e9es en \u00e9poques) ont fait l\u2019objet de nombreuses discussions par le pass\u00e9. R\u00e9cemment, les limites du Quaternaire ou de l\u2019Holoc\u00e8ne, nos p\u00e9riodes et \u00e9poques actuelles, ont \u00e9t\u00e9 modifi\u00e9es sans que les unit\u00e9s en elles-m\u00eames soient remises en question. Ce sont des caract\u00e9ristiques relativement homog\u00e8nes qui vont d\u00e9terminer ces unit\u00e9s de temps g\u00e9ologique.<\/p><p>Pour les temps tr\u00e8s anciens, \u00e0 l\u2019\u00e9chelle de la centaine de millions d\u2019ann\u00e9es, ces caract\u00e9ristiques sont connues \u00e0 un niveau de d\u00e9tail relativement faible. Plus on s\u2019approche de notre pr\u00e9sent, plus on dispose de donn\u00e9es\u00a0: ces unit\u00e9s de temps deviennent beaucoup plus courtes. Elles sont \u00e9galement caract\u00e9ris\u00e9es par des param\u00e8tres plus pr\u00e9cis. Ainsi l\u2019Holoc\u00e8ne \u2013 la p\u00e9riode actuelle \u2013 se d\u00e9finit, entre autres, par une gamme \u00e9troite de temp\u00e9ratures et de compositions de l\u2019atmosph\u00e8re et de l\u2019oc\u00e9an.<\/p><p>Or, depuis la r\u00e9volution industrielle et surtout depuis l\u2019apr\u00e8s-guerre, les temp\u00e9ratures, tout comme la composition de l\u2019atmosph\u00e8re, ont vari\u00e9 de fa\u00e7on extr\u00eamement rapide. Nous sommes sortis des gammes de variation habituelles de ces param\u00e8tres durant l\u2019Holoc\u00e8ne, comme le montre la partie tout \u00e0 droite sur le graphe ci-dessous.<\/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<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-e514ce4 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"e514ce4\" data-element_type=\"section\" data-e-type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-5328cfb\" data-id=\"5328cfb\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-bcb8517 elementor-widget elementor-widget-text-editor\" data-id=\"bcb8517\" 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<figure class=\"align-center zoomable\"><a href=\"https:\/\/images.theconversation.com\/files\/624645\/original\/file-20241009-15-112f11.jpg?ixlib=rb-4.1.0&amp;q=45&amp;auto=format&amp;w=1000&amp;fit=clip\"><img decoding=\"async\" src=\"https:\/\/images.theconversation.com\/files\/624645\/original\/file-20241009-15-112f11.jpg?ixlib=rb-4.1.0&amp;q=45&amp;auto=format&amp;w=754&amp;fit=clip\" sizes=\"(min-width: 1466px) 754px, (max-width: 599px) 100vw, (min-width: 600px) 600px, 237px\" srcset=\"https:\/\/images.theconversation.com\/files\/624645\/original\/file-20241009-15-112f11.jpg?ixlib=rb-4.1.0&amp;q=45&amp;auto=format&amp;w=600&amp;h=382&amp;fit=crop&amp;dpr=1 600w, https:\/\/images.theconversation.com\/files\/624645\/original\/file-20241009-15-112f11.jpg?ixlib=rb-4.1.0&amp;q=30&amp;auto=format&amp;w=600&amp;h=382&amp;fit=crop&amp;dpr=2 1200w, https:\/\/images.theconversation.com\/files\/624645\/original\/file-20241009-15-112f11.jpg?ixlib=rb-4.1.0&amp;q=15&amp;auto=format&amp;w=600&amp;h=382&amp;fit=crop&amp;dpr=3 1800w, https:\/\/images.theconversation.com\/files\/624645\/original\/file-20241009-15-112f11.jpg?ixlib=rb-4.1.0&amp;q=45&amp;auto=format&amp;w=754&amp;h=480&amp;fit=crop&amp;dpr=1 754w, https:\/\/images.theconversation.com\/files\/624645\/original\/file-20241009-15-112f11.jpg?ixlib=rb-4.1.0&amp;q=30&amp;auto=format&amp;w=754&amp;h=480&amp;fit=crop&amp;dpr=2 1508w, https:\/\/images.theconversation.com\/files\/624645\/original\/file-20241009-15-112f11.jpg?ixlib=rb-4.1.0&amp;q=15&amp;auto=format&amp;w=754&amp;h=480&amp;fit=crop&amp;dpr=3 2262w\" alt=\"\" \/><\/a><figcaption><span class=\"caption\">La temp\u00e9rature, comme la composition de l\u2019atmosph\u00e8re montrent des variations extr\u00eamement importantes et brutales lorsqu\u2019on les compare aux variations des 30\u00a0000 derni\u00e8res ann\u00e9es.<\/span>\n<span class=\"attribution\"><span class=\"license\">Fourni par l&#8217;auteur<\/span><\/span><\/figcaption><\/figure>\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<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-e70e42e elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"e70e42e\" data-element_type=\"section\" data-e-type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-72c1409\" data-id=\"72c1409\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-cfc568c elementor-widget elementor-widget-text-editor\" data-id=\"cfc568c\" 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>Au-del\u00e0 de ces seuls marqueurs, les activit\u00e9s humaines sont \u00e0 l\u2019origine de l\u2019apparition de nombreux polluants. Les plastiques, par exemple, ont fini par s\u2019incorporer dans les <a href=\"https:\/\/www.sciencedirect.com\/science\/article\/abs\/pii\/S0048969724055165\">s\u00e9diments qui se d\u00e9posent au fond des lacs et des oc\u00e9ans<\/a> depuis quelques dizaines d\u2019ann\u00e9es.<\/p><p>Les tests nucl\u00e9aires ont augment\u00e9 la concentration d\u2019<a href=\"https:\/\/journals.sagepub.com\/doi\/10.1177\/20530196221149281\">\u00e9l\u00e9ments radioactifs dans l\u2019atmosph\u00e8re et dans l\u2019enregistrement s\u00e9dimentaire<\/a>. Ce sont ces marqueurs radioactifs qui ont conduit \u00e0 faire d\u00e9buter l\u2019anthropoc\u00e8ne en 1952, l\u2019ann\u00e9e de la premi\u00e8re explosion a\u00e9rienne d\u2019une bombe \u00e0 hydrog\u00e8ne.<\/p><p>Avant la proposition du groupe de travail \u00e0 la CIS, la question de la date de d\u00e9but de l\u2019anthropoc\u00e8ne avait d\u00e9j\u00e0 fait l\u2019objet de <a href=\"https:\/\/www.nature.com\/articles\/nature14258\">d\u00e9bats et de plusieurs propositions<\/a>. En effet, on peut retracer les influences des activit\u00e9s humaines plus loin en arri\u00e8re. Quand Paul Crutzen, prix Nobel de chimie a propos\u00e9 l\u2019id\u00e9e d\u2019anthropoc\u00e8ne en 2000, il estimait que cette nouvelle \u00e9poque pouvait \u00eatre dat\u00e9e au <a href=\"https:\/\/www.nature.com\/articles\/415023a\">d\u00e9but de l\u2019industrialisation li\u00e9e \u00e0 l\u2019utilisation du charbon, \u00e0 la fin du XVIII\u1d49 si\u00e8cle<\/a>.<\/p><p>Si le groupe de travail sur l\u2019anthropoc\u00e8ne n\u2019a pas retenu ces dates, c\u2019est qu\u2019il s\u2019est attach\u00e9 \u00e0 caract\u00e9riser le moment o\u00f9 les activit\u00e9s humaines ont fortement, dramatiquement et, pour partie, irr\u00e9m\u00e9diablement transform\u00e9 les conditions de l\u2019habitabilit\u00e9 de notre plan\u00e8te.<\/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<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-ff991dd elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"ff991dd\" data-element_type=\"section\" data-e-type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-375ad31\" data-id=\"375ad31\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-3385053 elementor-widget elementor-widget-text-editor\" data-id=\"3385053\" 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<h2>L\u2019anthropoc\u00e8ne comme point de bascule<\/h2><p>Les dates pr\u00e9c\u00e9demment \u00e9voqu\u00e9es sont des signes avant-coureurs d\u2019une croissance exponentielle de notre impact, dont on retrouve les traces indubitables <a href=\"https:\/\/www.pnas.org\/doi\/10.1073\/pnas.2313098121\">dans notre environnement et les enregistrements g\u00e9ologiques<\/a> apr\u00e8s la Seconde Guerre mondiale. Quel que soit le param\u00e8tre envisag\u00e9 (composition de l\u2019atmosph\u00e8re, temp\u00e9ratures, cycle du carbone, impacts sur la biodiversit\u00e9, modifications du cycle de l\u2019eau, explosion de la production alimentaire et du tourisme, d\u00e9veloppement de la consommation de biens mat\u00e9riels\u2026) l\u2019\u00e9volution montre une rupture majeure \u00e0 partir des ann\u00e9es 1950, et des taux de progression actuels que rien ne semble pouvoir enrayer.<\/p><figure class=\"align-center \"><figcaption><\/figcaption><\/figure>\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<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-d1ca687 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"d1ca687\" data-element_type=\"section\" data-e-type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-c6b1e52\" data-id=\"c6b1e52\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-9c525d2 elementor-widget elementor-widget-text-editor\" data-id=\"9c525d2\" 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<figure class=\"align-center \"><img decoding=\"async\" src=\"https:\/\/images.theconversation.com\/files\/624648\/original\/file-20241009-17-i69so1.jpg?ixlib=rb-4.1.0&amp;q=45&amp;auto=format&amp;w=754&amp;fit=clip\" sizes=\"(min-width: 1466px) 754px, (max-width: 599px) 100vw, (min-width: 600px) 600px, 237px\" srcset=\"https:\/\/images.theconversation.com\/files\/624648\/original\/file-20241009-17-i69so1.jpg?ixlib=rb-4.1.0&amp;q=45&amp;auto=format&amp;w=600&amp;h=505&amp;fit=crop&amp;dpr=1 600w, https:\/\/images.theconversation.com\/files\/624648\/original\/file-20241009-17-i69so1.jpg?ixlib=rb-4.1.0&amp;q=30&amp;auto=format&amp;w=600&amp;h=505&amp;fit=crop&amp;dpr=2 1200w, https:\/\/images.theconversation.com\/files\/624648\/original\/file-20241009-17-i69so1.jpg?ixlib=rb-4.1.0&amp;q=15&amp;auto=format&amp;w=600&amp;h=505&amp;fit=crop&amp;dpr=3 1800w, https:\/\/images.theconversation.com\/files\/624648\/original\/file-20241009-17-i69so1.jpg?ixlib=rb-4.1.0&amp;q=45&amp;auto=format&amp;w=754&amp;h=635&amp;fit=crop&amp;dpr=1 754w, https:\/\/images.theconversation.com\/files\/624648\/original\/file-20241009-17-i69so1.jpg?ixlib=rb-4.1.0&amp;q=30&amp;auto=format&amp;w=754&amp;h=635&amp;fit=crop&amp;dpr=2 1508w, https:\/\/images.theconversation.com\/files\/624648\/original\/file-20241009-17-i69so1.jpg?ixlib=rb-4.1.0&amp;q=15&amp;auto=format&amp;w=754&amp;h=635&amp;fit=crop&amp;dpr=3 2262w\" alt=\"\" \/><figcaption><span class=\"caption\">De nombreux indicateurs de l\u2019activit\u00e9 humaine, notamment les \u00e9missions de carbone et la production de mat\u00e9riaux, de d\u00e9chets et de viande, ont consid\u00e9rablement augment\u00e9 apr\u00e8s la Seconde Guerre mondiale.<\/span>\n<span class=\"attribution\"><span class=\"source\">Modifi\u00e9 depuis revue Nature, Vol 632, 29 Ao\u00fbt 2024<\/span>, <span class=\"license\">Fourni par l&#8217;auteur<\/span><\/span><\/figcaption><\/figure>\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<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-4d40591 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"4d40591\" data-element_type=\"section\" data-e-type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-fb5c865\" data-id=\"fb5c865\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-c6c15d5 elementor-widget elementor-widget-text-editor\" data-id=\"c6c15d5\" 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>Depuis 2007, on d\u00e9crit ce demi-si\u00e8cle comme <a href=\"https:\/\/www.hup.harvard.edu\/books\/9780674545038\">celui de la \u00ab\u00a0Grande Acc\u00e9l\u00e9ration\u00a0\u00bb<\/a>. En quelques dizaines d\u2019ann\u00e9es, les variations ont largement d\u00e9pass\u00e9 les fluctuations des derniers mill\u00e9naires et plus encore, celles de toute l\u2019\u00e9poque de l\u2019Holoc\u00e8ne, qui a d\u00e9but il y a plus de 10\u00a0000\u00a0ans. Nombre de <a href=\"https:\/\/www.science.org\/doi\/10.1126\/science.1259855\">travaux scientifiques<\/a> l\u2019ont montr\u00e9, ces progressions nous entra\u00eenent vers des conditions non durables.<\/p><p>Nous sortons d\u2019un contexte bioclimatique favorable \u00e0 la vie humaine pour entrer dans un contexte o\u00f9 les processus d\u2019emballement climatique et d\u2019effondrement des \u00e9cosyst\u00e8mes fragilisent les conditions de la vie humaine en soci\u00e9t\u00e9. Concr\u00e8tement, nous entrons dans un monde o\u00f9 les ressources viennent \u00e0 manquer, o\u00f9 les temp\u00e9ratures deviennent extr\u00eames au point de rendre inhabitables des r\u00e9gions aujourd\u2019hui peupl\u00e9es.<\/p><p>Il existe donc bien un consensus au sein du groupe de travail sur l\u2019anthropoc\u00e8ne\u00a0: la date de d\u00e9but de l\u2019anthropoc\u00e8ne ne marque pas le d\u00e9but de l\u2019influence des activit\u00e9s humaines, mais le moment o\u00f9 ces activit\u00e9s ont clairement fait sortir la plan\u00e8te des conditions d\u2019habitabilit\u00e9 de l\u2019Holoc\u00e8ne, le moment o\u00f9 elles ont commenc\u00e9 \u00e0 faire d\u00e9railler le train.<\/p><p>Bien que l\u2019anthropoc\u00e8ne ait d\u00e9but\u00e9 il y a moins d\u2019un si\u00e8cle, les bouleversements qu\u2019il ent\u00e9rine sont majeurs et auront des r\u00e9percussions pour certaines d\u00e9finitives\u00a0: les esp\u00e8ces disparues ne r\u00e9apparaitront pas. De m\u00eame pour les glaciers, le risque est fort que la fonte d\u00e9j\u00e0 engag\u00e9e des inlandsis du Groenland et de l\u2019Antarctique soit un processus irr\u00e9versible qui nous conduira \u00e0 un monde tr\u00e8s \u00e9loign\u00e9 de l\u2019Holoc\u00e8ne, et pour longtemps.<\/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<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-aac71b8 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"aac71b8\" data-element_type=\"section\" data-e-type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-241c133\" data-id=\"241c133\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-4781ea9 elementor-widget elementor-widget-text-editor\" data-id=\"4781ea9\" 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<h2>Une rupture industrielle et sociale<\/h2><p>Au-del\u00e0 des discussions sur la date de son commencement, le concept d\u2019anthropoc\u00e8ne <a href=\"https:\/\/journals.sagepub.com\/doi\/10.1177\/2053019616634741\">marque le d\u00e9but d\u2019une rupture<\/a>. Cette rupture affecte aussi profond\u00e9ment nos soci\u00e9t\u00e9s qui ont vu s\u2019\u00e9tendre le capitalisme, le socialisme et l\u2019ultralib\u00e9ralisme.<\/p><p>D\u2019un c\u00f4t\u00e9, les structures internationales progressivement mises en place au cours de ces transformations ont permis l\u2019\u00e9mancipation des femmes et les programmes de lutte contre la pauvret\u00e9. De l\u2019autre, les d\u00e9veloppements technologiques, coupl\u00e9s \u00e0 la lib\u00e9ralisation du commerce, ont conduit \u00e0 une <a href=\"https:\/\/www.editionspoints.com\/ouvrage\/l-evenement-anthropocene-jean-baptiste-fressoz\/9782757859599\">d\u00e9multiplication de nos activit\u00e9s \u00e9conomiques<\/a>. En r\u00e9alit\u00e9, la mondialisation a exacerb\u00e9 l\u2019exploitation, la transformation et l\u2019exportation des ressources.<\/p><p>Ce faisant, elle a g\u00e9n\u00e9ralis\u00e9 \u2013 et consid\u00e9rablement accru \u2013 les in\u00e9galit\u00e9s entre une fraction \u2013 tr\u00e8s majoritaire \u2013 de la population humaine qui reste profond\u00e9ment d\u00e9munie, et une petite fraction qui s\u2019est grandement enrichie. Cette m\u00eame fraction minoritaire se trouve <a href=\"https:\/\/ourworldindata.org\/inequality-co2\">\u00e0 l\u2019origine de la majeure partie des transformations actuelles<\/a>.<\/p><p><a href=\"https:\/\/www.pressesdesciencespo.fr\/fr\/book\/?GCOI=27246100857760\">D\u2019autres travaux ont \u00e9galement soulign\u00e9<\/a> que cette capacit\u00e9 d\u2019exploitation sans freins r\u00e9sulte de formes particuli\u00e8res de consid\u00e9ration de l\u2019autre, qu\u2019il s\u2019agisse d\u2019\u00eatres humains ou non humains.<\/p><p>L\u2019anthropoc\u00e8ne est donc aussi le symbole de questions d\u2019ordre social, \u00e9conomique, anthropologique, juridique ou philosophique, tout comme une question citoyenne. Et c\u2019est bien ce qui rend le concept d\u2019anthropoc\u00e8ne \u00e0 la fois passionnant et conflictuel\u00a0! L\u2019anthropoc\u00e8ne souligne la brutalit\u00e9 d\u2019une soci\u00e9t\u00e9 extractive, exploitant les ressources et les \u00eatres humains\u00a0; une soci\u00e9t\u00e9 qui nous a conduits au bord du gouffre.<\/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<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-5750489 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"5750489\" data-element_type=\"section\" data-e-type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-d618369\" data-id=\"d618369\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-f338e47 elementor-widget elementor-widget-text-editor\" data-id=\"f338e47\" 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<h2>L\u2019anthropoc\u00e8ne, une opportunit\u00e9 scientifique<\/h2><p>Le progr\u00e8s et la modernit\u00e9 ont occult\u00e9 ou d\u00e9truit les cultures des peuples premiers, les \u00e9cosyst\u00e8mes, les liens, l\u2019attachement avec les non-humains tout comme la solidarit\u00e9 entre les humains. Aux yeux de soci\u00e9t\u00e9s rest\u00e9es immerg\u00e9es dans leur environnement initial et riches d\u2019un entrelacs de relations humaines, notre modernit\u00e9 constitue une forme d\u2019aveuglement et de violence in\u00e9gal\u00e9s.<\/p><p>Ainsi, l\u2019anthropoc\u00e8ne nous condamne \u00e0 questionner nos relations \u00e0 plusieurs niveaux.<\/p><ul><li>D\u2019abord \u00e0 l\u2019espace et au temps, et c\u2019est pour partie le probl\u00e8me des chronostratigraphes,<\/li><li>Puis notre rapport au vivant (c\u2019est l\u2019affaire de certains chasseurs et lotisseurs),<\/li><li>et enfin notre rapport \u00e0 l\u2019\u00eatre humain (c\u2019est ce qui oppose notamment les peuples premiers, les pays les plus pauvres d\u00e9j\u00e0 victimes du changement climatique aux soci\u00e9t\u00e9s et nations industrialis\u00e9es dominantes).<\/li><\/ul><p>Nous, scientifiques qui travaillons sur l\u2019\u00e9volution r\u00e9cente de notre plan\u00e8te et en particulier de sa pellicule la plus superficielle, la zone critique, l\u2019atmosph\u00e8re ou l\u2019oc\u00e9an, nous voyons dans le concept d\u2019anthropoc\u00e8ne une formidable opportunit\u00e9 de mieux comprendre, toutes sciences confondues, le monde qui nous entoure.<\/p><p>Il s\u2019agit ni plus ni moins que d\u2019inventer une science nouvelle, tout comme il s\u2019agit d\u2019inventer une soci\u00e9t\u00e9 nouvelle. On peut comprendre que cela effraie nombre de nos coll\u00e8gues, et nombre de nos concitoyens, mais c\u2019est bien de cet enjeu que l\u2019anthropoc\u00e8ne est le nom.<\/p><p>\u00a0<\/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<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-3f671aa elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"3f671aa\" data-element_type=\"section\" data-e-type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-1bc73c9\" data-id=\"1bc73c9\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-a31f838 elementor-widget-divider--view-line elementor-widget elementor-widget-divider\" data-id=\"a31f838\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"divider.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t<div class=\"elementor-divider\">\n\t\t\t<span class=\"elementor-divider-separator\">\n\t\t\t\t\t\t<\/span>\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"elementor-section elementor-top-section elementor-element elementor-element-2b23172 elementor-section-boxed elementor-section-height-default elementor-section-height-default\" data-id=\"2b23172\" data-element_type=\"section\" data-e-type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-default\">\n\t\t\t\t\t<div class=\"elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-e0d798d\" data-id=\"e0d798d\" data-element_type=\"column\" data-e-type=\"column\">\n\t\t\t<div class=\"elementor-widget-wrap elementor-element-populated\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-69478f6 elementor-widget elementor-widget-text-editor\" data-id=\"69478f6\" 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><a href=\"https:\/\/theconversation.com\/profiles\/luc-aquilina-1389728\">Luc Aquilina<\/a>, Professeur en sciences de l\u2019environnement, <em><a href=\"https:\/\/theconversation.com\/institutions\/universite-de-rennes-1-universite-de-rennes-2399\">Universit\u00e9 de Rennes\u00a01 &#8211; Universit\u00e9 de Rennes<\/a><\/em>; <a href=\"https:\/\/theconversation.com\/profiles\/catherine-jeandel-2236158\">Catherine Jeandel<\/a>, Oc\u00e9anologue et g\u00e9ochimiste, directrice de recherche au CNRS, <em><a href=\"https:\/\/theconversation.com\/institutions\/centre-national-de-la-recherche-scientifique-cnrs-2192\">Centre national de la recherche scientifique (CNRS)<\/a><\/em>; <a href=\"https:\/\/theconversation.com\/profiles\/clement-poirier-2236181\">Cl\u00e9ment Poirier<\/a>, Chercheur en sciences de la terre, <em><a href=\"https:\/\/theconversation.com\/institutions\/universite-de-caen-normandie-2555\">Universit\u00e9 de Caen Normandie<\/a><\/em>; <a href=\"https:\/\/theconversation.com\/profiles\/clement-roques-1440123\">Cl\u00e9ment Roques<\/a>, Chercheur en hydrologie, <em><a href=\"https:\/\/theconversation.com\/institutions\/universite-de-neuchatel-2562\">Universit\u00e9 de Neuch\u00e2tel<\/a><\/em>; <a href=\"https:\/\/theconversation.com\/profiles\/jacques-grinevald-2236179\">Jacques Grinevald<\/a>, Professeur honoraire, \u00e9pist\u00e9mologue et historien du d\u00e9veloppement scientifique et technologique,, <em><a href=\"https:\/\/theconversation.com\/institutions\/graduate-institute-institut-de-hautes-etudes-internationales-et-du-developpement-iheid-2905\">Graduate Institute \u2013 Institut de hautes \u00e9tudes internationales et du d\u00e9veloppement (IHEID)<\/a><\/em>; <a href=\"https:\/\/theconversation.com\/profiles\/jan-zalasiewicz-153171\">Jan Zalasiewicz<\/a>, Professor of Palaeobiology, <em><a href=\"https:\/\/theconversation.com\/institutions\/university-of-leicester-1053\">University of Leicester<\/a><\/em>; <a href=\"https:\/\/theconversation.com\/profiles\/jerome-gaillardet-2236156\">J\u00e9r\u00f4me Gaillardet<\/a>, Professeur de sciences de la Terre \u00e0 l&#8217;Institut de Physique du Globe de Paris et charg\u00e9 de cours \u00e0 Sciences Po Paris, <em><a href=\"https:\/\/theconversation.com\/institutions\/institut-de-physique-du-globe-de-paris-ipgp-2350\">Institut de physique du globe de Paris (IPGP)<\/a><\/em>; <a href=\"https:\/\/theconversation.com\/profiles\/martin-j-head-1518648\">Martin J. Head<\/a>, Professor of Earth Sciences, <em><a href=\"https:\/\/theconversation.com\/institutions\/brock-university-1340\">Brock University<\/a><\/em>; <a href=\"https:\/\/theconversation.com\/profiles\/michel-magny-2236172\">Michel Magny<\/a>, Directeur de recherche \u00e9m\u00e9rite , <em><a href=\"https:\/\/theconversation.com\/institutions\/universite-de-franche-comte-ubfc-2353\">Universit\u00e9 de Franche-Comt\u00e9 \u2013 UBFC<\/a><\/em>; <a href=\"https:\/\/theconversation.com\/profiles\/nathanael-wallenhorst-1014338\">Nathana\u00ebl Wallenhorst<\/a>, Professeur, Doyen de la Facult\u00e9 d&#8217;Education, UCO, Chercheur au LIRFE et associ\u00e9 au LISEC, <em><a href=\"https:\/\/theconversation.com\/institutions\/universite-de-haute-alsace-uha-2472\">Universit\u00e9 de Haute-Alsace (UHA)<\/a><\/em> et <a href=\"https:\/\/theconversation.com\/profiles\/simon-turner-1382166\">Simon Turner<\/a>, Senior Research Fellow in Geography, <em><a href=\"https:\/\/theconversation.com\/institutions\/ucl-1885\">UCL<\/a><\/em><\/p><p>Cet article est republi\u00e9 \u00e0 partir de <a href=\"https:\/\/theconversation.com\">The Conversation<\/a> sous licence Creative Commons. Lire l\u2019<a href=\"https:\/\/theconversation.com\/lanthropocene-un-objet-frontiere-qui-signifie-plus-quune-tranche-de-temps-geologique-240820\">article original<\/a>.<\/p><p>Cr\u00e9dits photo vignette : <a href=\"https:\/\/www.pexels.com\/fr-fr\/photo\/plage-cote-rive-littoral-11607726\/\" target=\"_blank\" rel=\"noopener\">Pew Nguyen<\/a><\/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<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<\/div>\n\t\t","protected":false},"excerpt":{"rendered":"<p>Luc Aquilina, Universit\u00e9 de Rennes\u00a01 &#8211; Universit\u00e9 de Rennes; Catherine Jeandel, Centre national de la recherche scientifique (CNRS); Cl\u00e9ment Poirier, Universit\u00e9 de Caen Normandie; Cl\u00e9ment Roques, Universit\u00e9 de Neuch\u00e2tel; Jacques Grinevald, Graduate Institute \u2013 Institut de hautes \u00e9tudes internationales et du d\u00e9veloppement (IHEID); Jan Zalasiewicz, University of Leicester; J\u00e9r\u00f4me Gaillardet, Institut de physique du globe &hellip; <a href=\"https:\/\/www.ubfc.fr\/en\/lanthropocene-un-objet-frontiere-qui-signifie-plus-quune-tranche-de-temps-geologique\/\">Continued<\/a><\/p>\n","protected":false},"author":60,"featured_media":74511,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[2062,2049,14],"class_list":["post-74494","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-culture-scientifique-et-technique","category-recherche","category-ubfc"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.3 - 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