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{"id":2545,"date":"2012-10-17T07:57:32","date_gmt":"2012-10-17T05:57:32","guid":{"rendered":"https:\/\/energethique.be\/?p=2545"},"modified":"2017-02-23T17:52:39","modified_gmt":"2017-02-23T15:52:39","slug":"remise-en-cause-du-modele-de-stockage-de-co2-dans-les-lacs","status":"publish","type":"post","link":"https:\/\/energethique.be\/2012\/remise-en-cause-du-modele-de-stockage-de-co2-dans-les-lacs\/","title":{"rendered":"Remise en cause du mod\u00e8le de stockage de CO2 dans les lacs"},"content":{"rendered":"

Climatologie
\nRemise en cause du mod\u00e8le de stockage de CO2 dans les lacshttp:\/\/mountainsphoto.ru<\/a><\/p>\n

http:\/\/www.bulletins-electroniques.com\/actualites\/71208.htm<\/a><\/p>\n

Une \u00e9tude de l’Universit\u00e9 du Qu\u00e9bec \u00e0 Montr\u00e9al en collaboration avec l’Universit\u00e9 de Virginie r\u00e9v\u00e8le la pr\u00e9sence d’une importante quantit\u00e9 de carbone ancien rel\u00e2ch\u00e9 dans l’atmosph\u00e8re par les lacs et les rivi\u00e8res du Sud du Qu\u00e9bec, Canada. Cette observation remet en cause le mod\u00e8le habituellement observ\u00e9 de conservation du C02 dans cet environnement.<\/p>\n

Des travaux pr\u00e9c\u00e9dents avaient en effet sugg\u00e9r\u00e9 que la relation entre l’environnement aquatique et terrestre \u00e9tait telle que les bact\u00e9ries aquatiques consommaient rapidement le carbone r\u00e9cemment accumul\u00e9 par l’environnement terrestre. Cette nouvelle \u00e9tude montre qu’il y pourrait y avoir un \u00e9cart cons\u00e9quent entre le moment o\u00f9 le C02 est consomm\u00e9 et le moment o\u00f9 il est produit. Pour arriver \u00e0 cette conclusion, les chercheurs ont proc\u00e9d\u00e9 \u00e0 une datation au carbone du C02 consomm\u00e9 par les bact\u00e9ries, d’une part, et du C02 rel\u00e2ch\u00e9 dans l’atmosph\u00e8re, d’autre part. Ils ont ainsi observ\u00e9 qu’une partie du C02 consomm\u00e9 \u00e9tait vieux de 1000 \u00e0 3000 ans.<\/p>\n

Bien que ces observations n’aient \u00e9t\u00e9 effectu\u00e9es qu’au Qu\u00e9bec, les chercheurs soulignent que si la plupart des lacs et rivi\u00e8res du grand nord se comportent de cette mani\u00e8re, l’impact de cette ancienne source de carbone pourrait \u00eatre consid\u00e9rable. Le C02 est un gaz \u00e0 effet de serre et son accumulation dans l’atmosph\u00e8re constitue une des sources du changement climatique. <\/p>\n

Sources :
\n
http:\/\/redirectix.bulletins-electroniques.com\/5y4xW<\/a><\/p>\n

R\u00e9dacteurs :
\nMathilde Hubert – Charg\u00e9e de Mission scientifique \u00e0 Montr\u00e9al :mathilde.hubert@diplomatie.gouv.fr<\/p>\n

Origine :
\nBE Canada num\u00e9ro 409 (15\/10\/2012) – Ambassade de France au Canada \/ ADIT –
http:\/\/www.bulletins-electroniques.com\/actualites\/71208.htm<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"

Climatologie
\nRemise en cause du mod\u00e8le de stockage de CO2 dans les lacs
http:\/\/mountainsphoto.ru<\/a><\/p>\n

http:\/\/www.bulletins-electroniques.com\/actualites\/71208.htm<\/a><\/p>\n

Une \u00e9tude de l’Universit\u00e9 du Qu\u00e9bec \u00e0 Montr\u00e9al en collaboration avec l’Universit\u00e9 de Virginie r\u00e9v\u00e8le la pr\u00e9sence d’une importante quantit\u00e9 de carbone ancien rel\u00e2ch\u00e9 dans l’atmosph\u00e8re par les lacs et les rivi\u00e8res du Sud du Qu\u00e9bec, Canada. Cette observation remet en cause le mod\u00e8le habituellement observ\u00e9 de conservation du C02 dans cet environnement.<\/p>\n

Des travaux pr\u00e9c\u00e9dents avaient en effet sugg\u00e9r\u00e9 que la relation entre l’environnement aquatique […]<\/p>\n","protected":false},"author":9,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"spay_email":"","jetpack_publicize_message":"","jetpack_is_tweetstorm":false,"jetpack_publicize_feature_enabled":true},"categories":[1],"tags":[],"jetpack_featured_media_url":"","jetpack_publicize_connections":[],"jetpack_shortlink":"https:\/\/wp.me\/pBGwz-F3","jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/energethique.be\/wp-json\/wp\/v2\/posts\/2545"}],"collection":[{"href":"https:\/\/energethique.be\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/energethique.be\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/energethique.be\/wp-json\/wp\/v2\/users\/9"}],"replies":[{"embeddable":true,"href":"https:\/\/energethique.be\/wp-json\/wp\/v2\/comments?post=2545"}],"version-history":[{"count":0,"href":"https:\/\/energethique.be\/wp-json\/wp\/v2\/posts\/2545\/revisions"}],"wp:attachment":[{"href":"https:\/\/energethique.be\/wp-json\/wp\/v2\/media?parent=2545"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/energethique.be\/wp-json\/wp\/v2\/categories?post=2545"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/energethique.be\/wp-json\/wp\/v2\/tags?post=2545"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}