{"id":20500,"date":"2023-08-25T11:57:47","date_gmt":"2023-08-25T09:57:47","guid":{"rendered":"https:\/\/www.cerege.fr\/fr\/agenda\/grands-seminaires-du-cerege-anne-alexandre-cerege-2\/"},"modified":"2023-09-06T18:05:09","modified_gmt":"2023-09-06T16:05:09","slug":"grands-seminaires-du-cerege-anne-alexandre-cerege-2","status":"publish","type":"tribe_events","link":"https:\/\/www.cerege.fr\/fr\/agenda\/grands-seminaires-du-cerege-anne-alexandre-cerege-2\/","title":{"rendered":"Grands S\u00e9minaires du CEREGE : Anne Alexandre (CEREGE)"},"content":{"rendered":"<p>**Titre :** L\u2019humidit\u00e9 relative atmosph\u00e9rique continentale r\u00e9v\u00e9l\u00e9e par la triple composition isotopique de l\u2019oxyg\u00e8ne de l\u2019eau et de la silice des plantes<br \/>\n**R\u00e9sum\u00e9 :** Si l\u2019humidit\u00e9 relative continentale diminue \u00e0 l\u2019\u00e9chelle globale sur les continents, \u00e0 l\u2019\u00e9chelle r\u00e9gionale, les pr\u00e9dictions pour les prochaines d\u00e9cennies restent tr\u00e8s impr\u00e9cises. Or l\u2019humidit\u00e9 relative continentale est un param\u00e8tre climatique cl\u00e9 dans l\u2019\u00e9volution des \u00e9cosyst\u00e8mes. Dans cette pr\u00e9sentation je montrerai comment l\u2019humidit\u00e9 relative continentale contr\u00f4le la transpiration v\u00e9g\u00e9tale\u00a0; comment les changements d\u2019humidit\u00e9 sont enregistr\u00e9s par la triple composition isotopique de l\u2019oxyg\u00e8ne de l\u2019eau et de la silice des plantes, que l\u2019on sait mesurer au CEREGE\u00a0; pourquoi nous cherchons \u00e0 reconstituer ces changements pour les derniers 3000 ans en Afrique intertropicale\u00a0; et \u00a0comment cela pourrait permettre de mieux pr\u00e9dire les \u00e9volutions futures de l\u2019humidit\u00e9 relative continentale et des \u00e9cosyst\u00e8mes dans les r\u00e9gions intertropicales.<br \/>\nL\u2019\u00e9v\u00e9nement commencera par un caf\u00e9 servi devant l\u2019amphi Pasteur \u00e0 13h15.<br \/>\nLa pr\u00e9sentation sera en fran\u00e7ais et sera disponible en streaming ((http:\/\/streaming-a.osupytheas.fr\/embed\/live.html))<\/p>\n","protected":false},"excerpt":{"rendered":"<p>**Titre :** L\u2019humidit\u00e9 relative atmosph\u00e9rique continentale r\u00e9v\u00e9l\u00e9e par la triple composition isotopique de l\u2019oxyg\u00e8ne de l\u2019eau et de la silice des plantes **R\u00e9sum\u00e9 :** Si l\u2019humidit\u00e9 relative continentale diminue \u00e0 [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"template":"","meta":{"_acf_changed":false,"_tribe_events_status":"","_tribe_events_status_reason":"","footnotes":""},"tags":[],"tribe_events_cat":[],"class_list":["post-20500","tribe_events","type-tribe_events","status-publish","hentry"],"acf":[],"publishpress_future_workflow_manual_trigger":{"enabledWorkflows":[]},"_links":{"self":[{"href":"https:\/\/www.cerege.fr\/fr\/wp-json\/wp\/v2\/tribe_events\/20500","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.cerege.fr\/fr\/wp-json\/wp\/v2\/tribe_events"}],"about":[{"href":"https:\/\/www.cerege.fr\/fr\/wp-json\/wp\/v2\/types\/tribe_events"}],"author":[{"embeddable":true,"href":"https:\/\/www.cerege.fr\/fr\/wp-json\/wp\/v2\/users\/1"}],"version-history":[{"count":1,"href":"https:\/\/www.cerege.fr\/fr\/wp-json\/wp\/v2\/tribe_events\/20500\/revisions"}],"predecessor-version":[{"id":20509,"href":"https:\/\/www.cerege.fr\/fr\/wp-json\/wp\/v2\/tribe_events\/20500\/revisions\/20509"}],"wp:attachment":[{"href":"https:\/\/www.cerege.fr\/fr\/wp-json\/wp\/v2\/media?parent=20500"}],"wp:term":[{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.cerege.fr\/fr\/wp-json\/wp\/v2\/tags?post=20500"},{"taxonomy":"tribe_events_cat","embeddable":true,"href":"https:\/\/www.cerege.fr\/fr\/wp-json\/wp\/v2\/tribe_events_cat?post=20500"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}