{"id":2789,"date":"2014-08-18T14:18:04","date_gmt":"2014-08-18T19:18:04","guid":{"rendered":"http:\/\/sciencemediacentre.ca\/site\/?p=2789"},"modified":"2014-08-22T23:00:21","modified_gmt":"2014-08-23T04:00:21","slug":"des-arbres-qui-empietent-sur-les-vaches","status":"publish","type":"post","link":"http:\/\/sciencemediacentre.ca\/site\/des-arbres-qui-empietent-sur-les-vaches\/","title":{"rendered":"Des arbres qui empi\u00e8tent sur les vaches<img src=\"http:\/\/sciencemediacentre.ca\/site\/wp-content\/uploads\/2014\/01\/canada_flag_icon_small.gif\">"},"content":{"rendered":"<div id=\"attachment_2781\" style=\"width: 410px\" class=\"wp-caption aligncenter\"><a href=\"http:\/\/sciencemediacentre.ca\/site\/wp-content\/uploads\/2014\/08\/6125267135_604936211f_z.jpg\"><img loading=\"lazy\" decoding=\"async\" aria-describedby=\"caption-attachment-2781\" class=\"size-full wp-image-2781\" src=\"http:\/\/sciencemediacentre.ca\/site\/wp-content\/uploads\/2014\/08\/6125267135_604936211f_z.jpg\" alt=\"Trees encroaching on Tallgrass Prairie National Park in the US. A new study shows that as tree cover increases in North America, livestock productivity can decrease (Photo credit: Miguel Vieira, via flickr)\" width=\"400\" height=\"300\" srcset=\"http:\/\/sciencemediacentre.ca\/site\/wp-content\/uploads\/2014\/08\/6125267135_604936211f_z.jpg 400w, http:\/\/sciencemediacentre.ca\/site\/wp-content\/uploads\/2014\/08\/6125267135_604936211f_z-300x225.jpg 300w\" sizes=\"auto, (max-width: 400px) 100vw, 400px\" \/><\/a><p id=\"caption-attachment-2781\" class=\"wp-caption-text\">Trees encroaching on Tallgrass Prairie National Park in the US. A new study shows that as tree cover increases in North America, livestock productivity can decrease (Photo credit: <a href=\"https:\/\/www.flickr.com\/photos\/miguelvieira\/6125267135\">Miguel Vieira, via flickr<\/a>)<\/p><\/div>\n<p><span style=\"color: #000000;\">Quand les prairies et les savanes se transforment en for\u00eat, les populations de b\u00e9tail comme les vaches laiti\u00e8res et les boeufs diminuent selon une nouvelle \u00e9tude. \u00c0 l\u2019aide d\u2019une simulation informatique, les auteurs montrent qu\u2019une augmentation de 1% du couvert forestier correspond \u00e0 une baisse de 2% du nombre moyen de vaches par kilom\u00e8tre carr\u00e9. <\/span><\/p>\n<p><span style=\"color: #000000;\">Ces r\u00e9sultats arrivent alors que le couvert forestier en Am\u00e9rique du Nord augmente annuellement de 0,5 \u00e0 2% par ann\u00e9e \u00e0 cause de meilleures pratiques de gestion du territoire, de l\u2019arriv\u00e9e d\u2019esp\u00e8ces d\u2019arbres non indig\u00e8nes, du d\u00e9clin des animaux qui broutent et des changements climatiques. Les chercheurs comparent aussi les divers modes de gestion du territoire aux \u00c9tats-Unis et en Argentine et montrent comment des facteurs socio\u00e9conomiques jouent aussi un r\u00f4le.<\/span><\/p>\n<p>Pour lire l\u2019article original publi\u00e9 dans\u00a0<em>PNAS\u00a0<\/em>le\u00a0<strong>18 juillet<\/strong>\u00a02014,\u00a0<a href=\"http:\/\/www.pnas.org\/content\/early\/2014\/08\/14\/1320585111.abstract?sid=3e9cf71e-468b-4ceb-a118-7d4bd5dc7fd4\" target=\"_blank\"><span style=\"text-decoration: underline;\">cliquez ici<\/span><\/a>.<\/p>\n<p><span style=\"text-decoration: underline;\"><em><strong>Auteur \u00e0 contacter pour plus d\u2019informations<\/strong><\/em><\/span><\/p>\n<h4><span style=\"color: #000000;\">Elena Bennett, Universit\u00e9 McGill, Quebec<\/span><\/h4>\n","protected":false},"excerpt":{"rendered":"<p>Quand les prairies et les savanes se transforment en for\u00eat, les populations de b\u00e9tail comme les vaches laiti\u00e8res et les boeufs diminuent selon une nouvelle \u00e9tude. \u00c0 l\u2019aide d\u2019une simulation informatique, les auteurs montrent qu\u2019une augmentation de 1% du couvert forestier correspond \u00e0 une baisse de 2% du nombre moyen de vaches par kilom\u00e8tre carr\u00e9. [&hellip;]<\/p>\n","protected":false},"author":3,"featured_media":2781,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_jetpack_newsletter_access":"","_jetpack_dont_email_post_to_subs":false,"_jetpack_newsletter_tier_id":0,"_jetpack_memberships_contains_paywalled_content":false,"_jetpack_memberships_contains_paid_content":false,"footnotes":""},"categories":[531],"tags":[1896,1323,683,1635,842],"class_list":["post-2789","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-paper-of-interest-fr","tag-agriculture-fr","tag-biodiversite","tag-environnement","tag-preservation","tag-quebec"],"jetpack_featured_media_url":"http:\/\/sciencemediacentre.ca\/site\/wp-content\/uploads\/2014\/08\/6125267135_604936211f_z.jpg","jetpack_shortlink":"https:\/\/wp.me\/p4DqbN-IZ","jetpack_sharing_enabled":true,"_links":{"self":[{"href":"http:\/\/sciencemediacentre.ca\/site\/wp-json\/wp\/v2\/posts\/2789","targetHints":{"allow":["GET"]}}],"collection":[{"href":"http:\/\/sciencemediacentre.ca\/site\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/sciencemediacentre.ca\/site\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/sciencemediacentre.ca\/site\/wp-json\/wp\/v2\/users\/3"}],"replies":[{"embeddable":true,"href":"http:\/\/sciencemediacentre.ca\/site\/wp-json\/wp\/v2\/comments?post=2789"}],"version-history":[{"count":2,"href":"http:\/\/sciencemediacentre.ca\/site\/wp-json\/wp\/v2\/posts\/2789\/revisions"}],"predecessor-version":[{"id":2864,"href":"http:\/\/sciencemediacentre.ca\/site\/wp-json\/wp\/v2\/posts\/2789\/revisions\/2864"}],"wp:featuredmedia":[{"embeddable":true,"href":"http:\/\/sciencemediacentre.ca\/site\/wp-json\/wp\/v2\/media\/2781"}],"wp:attachment":[{"href":"http:\/\/sciencemediacentre.ca\/site\/wp-json\/wp\/v2\/media?parent=2789"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/sciencemediacentre.ca\/site\/wp-json\/wp\/v2\/categories?post=2789"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/sciencemediacentre.ca\/site\/wp-json\/wp\/v2\/tags?post=2789"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}