{"id":2495,"date":"2007-08-28T00:00:00","date_gmt":"2007-08-28T00:00:00","guid":{"rendered":"https:\/\/newsroom.ferrovial.com\/news\/los-matorrales-prosperarian-en-detrimento-de-los-prados\/"},"modified":"2022-12-21T11:53:42","modified_gmt":"2022-12-21T10:53:42","slug":"los-matorrales-prosperarian-en-detrimento-de-los-prados","status":"publish","type":"new","link":"https:\/\/newsroom.ferrovial.com\/es\/noticias\/los-matorrales-prosperarian-en-detrimento-de-los-prados\/","title":{"rendered":"LOS MATORRALES PROSPERAR\u00cdAN EN DETRIMENTO DE LOS PRADOS"},"content":{"rendered":"    <section class=\"wysiwyg text-editor \" id=\"\">\n        <div class=\"container container--narrow container--p-10\">\n            <p><a title=\"\" href=\"http:\/\/www.elmundo.es\/\">El Mundo.es<\/a>&#8211; El aumento de la concentraci\u00f3n de di\u00f3xido de carbono (CO2) en la atm\u00f3sfera, a consecuencia de las emisiones de gases de efecto invernadero, est\u00e1 modificando los ecosistemas que contienen pastos y praderas hacia otros en los que proliferan los arbustos. Estos cambios ecol\u00f3gicos podr\u00edan tener importantes repercusiones entre los ganaderos del planeta.<\/p>\n<p>Los datos provienen de una investigaci\u00f3n llevada a cabo en las praderas de Colorado, Estados Unidos, por un equipo de cient\u00edficos de la Universidad Fort Collins, y del Departamento de Agricultura de ese pa\u00eds. El an\u00e1lisis de la investigaci\u00f3n se publica hoy en la revista Proceedings of the National Academy of Sciences (PNAS).<\/p>\n<p>El estudio confirma las hip\u00f3tesis sobre la causa por la que las plantas le\u00f1osas y arbustivas vienen invadiendo las praderas desde hace 200 a\u00f1os, en los albores de la era industrial: una mayor presencia de CO2 en la atm\u00f3sfera favorece la fotos\u00edntesis de estas \u00faltimas frente a las hierbas m\u00e1s cortas y carnosas.<\/p>\n<p>A finales del siglo XVIII, antes de la era industrial, las concentraciones de CO2 eran aproximadamente de 280 partes por mill\u00f3n (ppm). Actualmente esa concentraci\u00f3n ha subido a 380 ppm, y si se confirman las previsiones, a lo largo de este siglo esa cifra podr\u00eda exceder las 600 ppm, a consecuencia de las emisiones causadas por la quema de combustibles f\u00f3siles.<\/p>\n<p>Los investigadores instalaron unos invernaderos para crear una atm\u00f3sfera artificial en pleno campo, donde han sometido al ecosistema de la pradera a concentraciones de m\u00e1s de 600 ppm de CO2. La prueba se ha realizado entre los a\u00f1os 1997 y 2001, y cada mes de julio, tras la floraci\u00f3n, se han llevado a cabo las mediciones para comprobar los cambios.<\/p>\n<p>El crecimiento de la biomasa en estas superficies fue 40 veces mayor y benefici\u00f3 a las plantas arbustivas frente a las hierbas, en el periodo completo de la prueba durante cinco a\u00f1os.<\/p>\n<p>\u00abLos cambios precipitados de las concentraciones de CO2 en la atm\u00f3sfera tienen enormes implicaciones para la adaptaci\u00f3n y evoluci\u00f3n de ecosistemas relativamente modernos\u00bb, afirma la investigaci\u00f3n.<\/p>\n        <\/div>\n    <\/section>\n","protected":false},"excerpt":{"rendered":"","protected":false},"featured_media":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","nivel-2":[936],"nivel-5":[],"nivel-1":[],"nivel-3":[],"nivel-4":[],"class_list":["post-2495","new","type-new","status-publish","hentry","nivel-2-conservacion-del-medio-ambiente"],"acf":[],"yoast_head":"<title>LOS MATORRALES PROSPERAR\u00cdAN EN DETRIMENTO DE LOS PRADOS Sala de prensa Ferrovial | \u00daltimas noticias<\/title>\n<meta name=\"description\" content=\"Sala de prensa Ferrovial | \u00daltimas noticias\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/newsroom.ferrovial.com\/es\/noticias\/los-matorrales-prosperarian-en-detrimento-de-los-prados\/\" \/>\n<meta property=\"og:locale\" content=\"es_ES\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" 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