{"id":2788,"date":"2014-08-18T14:18:02","date_gmt":"2014-08-18T19:18:02","guid":{"rendered":"http:\/\/sciencemediacentre.ca\/site\/?p=2788"},"modified":"2014-08-22T22:59:55","modified_gmt":"2014-08-23T03:59:55","slug":"are-trees-crowding-out-cows","status":"publish","type":"post","link":"http:\/\/sciencemediacentre.ca\/site\/are-trees-crowding-out-cows\/","title":{"rendered":"Are trees crowding out cows?<img src=\"http:\/\/sciencemediacentre.ca\/site\/wp-content\/uploads\/2014\/01\/canada_flag_icon_small.gif\">"},"content":{"rendered":"<div id=\"attachment_2778\" 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-2778\" class=\"size-full wp-image-2778\" 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-2778\" 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;\">Livestock like beef cows can suffer when grasslands, shrublands and savannas shift to a more tree-covered landscape and new research has put a number on this effect. Using computer models the authors show that for every 1 per cent increase in tree cover, the number of reproductive cows per square kilometre drops by about 2 per cent of the current average value. <\/span><\/p>\n<p><span style=\"color: #000000;\">Tree cover in North America is estimated to be increasing at 0.5 to 2 per cent per year as a result of land management practices, introduction of non-native trees, loss of natural browsing animals and climate change. The researchers also compare different land management approaches in the United States and Argentina to show how socio-economic factors affect woody-plant encroachment and its impacts.<\/span><\/p>\n<p><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;\">Original research paper<\/span><\/a>\u00a0published in\u00a0<em>PNAS\u00a0<\/em>on\u00a0<strong>August 18, 2014<\/strong>.<\/p>\n<p><span style=\"text-decoration: underline;\"><em><strong>Names and affiliations of selected\u00a0authors<\/strong><\/em><\/span><\/p>\n<h4><span style=\"color: #000000;\">Elena Bennett, McGill University, Quebec<\/span><\/h4>\n","protected":false},"excerpt":{"rendered":"<p>Livestock like beef cows can suffer when grasslands, shrublands and savannas shift to a more tree-covered landscape and new research has put a number on this effect. Using computer models the authors show that for every 1 per cent increase in tree cover, the number of reproductive cows per square kilometre drops by about 2 [&hellip;]<\/p>\n","protected":false},"author":3,"featured_media":2778,"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":[25],"tags":[101,170,171,215,849],"class_list":["post-2788","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-paper-of-interest","tag-agriculture","tag-biodiversity","tag-ecology","tag-environment","tag-quebec-en"],"jetpack_featured_media_url":"http:\/\/sciencemediacentre.ca\/site\/wp-content\/uploads\/2014\/08\/6125267135_604936211f_z.jpg","jetpack_shortlink":"https:\/\/wp.me\/p4DqbN-IY","jetpack_sharing_enabled":true,"_links":{"self":[{"href":"http:\/\/sciencemediacentre.ca\/site\/wp-json\/wp\/v2\/posts\/2788","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=2788"}],"version-history":[{"count":3,"href":"http:\/\/sciencemediacentre.ca\/site\/wp-json\/wp\/v2\/posts\/2788\/revisions"}],"predecessor-version":[{"id":2863,"href":"http:\/\/sciencemediacentre.ca\/site\/wp-json\/wp\/v2\/posts\/2788\/revisions\/2863"}],"wp:featuredmedia":[{"embeddable":true,"href":"http:\/\/sciencemediacentre.ca\/site\/wp-json\/wp\/v2\/media\/2778"}],"wp:attachment":[{"href":"http:\/\/sciencemediacentre.ca\/site\/wp-json\/wp\/v2\/media?parent=2788"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/sciencemediacentre.ca\/site\/wp-json\/wp\/v2\/categories?post=2788"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/sciencemediacentre.ca\/site\/wp-json\/wp\/v2\/tags?post=2788"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}