{"id":61990,"date":"2019-06-23T07:00:19","date_gmt":"2019-06-23T10:00:19","guid":{"rendered":"http:\/\/patagoniambiental.com.ar\/info\/?p=61990"},"modified":"2019-06-19T15:39:28","modified_gmt":"2019-06-19T18:39:28","slug":"el-retroceso-de-glaciares-patagonicos-en-chile-amenaza-biodiversidad-marina","status":"publish","type":"post","link":"https:\/\/patagoniambiental.com.ar\/info\/el-retroceso-de-glaciares-patagonicos-en-chile-amenaza-biodiversidad-marina\/","title":{"rendered":"El retroceso de glaciares patag\u00f3nicos en Chile amenaza biodiversidad marina"},"content":{"rendered":"<header class=\"story-leaf-header row header-structure \"><\/header>\n<div class=\"header-structure\">\n<div class=\"row no-image\">\n<div class=\"col-xs-12 col-md-2 col-md-pull-10 story-leaf-infobox\">\n<div class=\"row story-leaf-author nopadding\">Santiago de Chile.- Cient\u00edficos chilenos alertaron de que el retroceso en los glaciares de la Patagonia chilena como consecuencia de la crisis clim\u00e1tica genera \u00abun grave impacto\u00bb negativo en la biodiversidad que vive y se alimenta en las columnas de agua que se derrite en el frente de estas masas de hielo.<\/div>\n<\/div>\n<\/div>\n<\/div>\n<p><!--more--><\/p>\n<div class=\"content-structure \">\n<div class=\"story-leaf-txt-p\" data-gtm-element-container=\"modulo-texto-link\">\n<p>Ocean\u00f3grafos del Centro de Investigaci\u00f3n Din\u00e1mica de Ecosistemas de Altas Latitudes (Ideal) de la Universidad Austral de Chile (UACh) informaron este mi\u00e9rcoles sobre la relaci\u00f3n directa entre el calentamiento global que derrite la lengua glaciar y hace retroceder el hielo, junto con la cantidad y calidad de la vida marina en sus cercan\u00edas.<\/p>\n<p>Los expertos realizaron una investigaci\u00f3n en los fiordos P\u00eda y Yendegaia, en el canal del Beagle, en la austral regi\u00f3n de Magallanes, donde compararon la respuesta de los organismos en el agua de ambos lugares, que tienen distinto tipo de descarga de agua dulce procedente de los glaciares.<\/p>\n<p>Gracias a la medici\u00f3n de la temperatura, salinidad, turbidez y concentraci\u00f3n de clorofila en el agua, muestras de zooplanton y agua a diversas profundidades, los expertos de Ideal instalaron una trampa de sedimentos para medir la cantidad y el tipo de material que cae al agua desde el hielo glaciar.<\/p>\n<p>Por un lado, en el fiordo P\u00eda, donde la lengua del glaciar desemboca directamente en el mar, los cient\u00edficos detectaron un sistema muy productivo, con alta concentraci\u00f3n de algas que atraen una gran cantidad de cop\u00e9podos (diminutos crust\u00e1ceos, principalmente zooplanton) que se alimentan de esos vegetales marinos.<\/p>\n<div id=\"hybs-mslot-b398df30-0\" class=\"hybs-mslot\"><\/div>\n<p>\u00abA pesar de que el fiordo P\u00eda es m\u00e1s productivo, presenta tambi\u00e9n un ambiente hostil para los cop\u00e9podos; generando alta mortalidad. Esto se encuentra asociado a la gran cantidad de materia inorg\u00e1nica que es liberada en la columna de agua desde el glaciar\u00bb, explic\u00f3 el doctor Ricardo Giesecke, l\u00edder de la investigaci\u00f3n.<\/p>\n<p>Los expertos confirmaron que de estos animales marinos, los de mayor tama\u00f1o tienen m\u00e1s dificultad en discriminar las part\u00edculas que ingieren, lo que produce una disfunci\u00f3n alimenticia y finalmente la muerte.<\/p>\n<p>Sin embargo, en el fiordo Yendegaia el glaciar tiene su frente 14 kil\u00f3metros r\u00edo arriba, por lo que el sistema tr\u00f3fico en el lugar es \u00abmucho m\u00e1s pobre\u00bb, seg\u00fan los ocean\u00f3grafos de Ideal.<\/p>\n<p>La diferencia en estos dos lugares, apenas separados por 65 kil\u00f3metros, hizo que los expertos concluyeran que el impacto de la emergencia clim\u00e1tica en los glaciares afecta directamente a la cadena tr\u00f3fica y, concretamente al zooplanton, b\u00e1sico tanto en la absorci\u00f3n de CO2 de la atm\u00f3sfera como en forma de alimento para otros animales.<\/p>\n<p>Fuente: EFE<\/p>\n<p>&nbsp;<\/p>\n<p>&nbsp;<\/p>\n<\/div>\n<\/div>\n","protected":false},"excerpt":{"rendered":"<p>Santiago de Chile.- Cient\u00edficos chilenos alertaron de que el retroceso en los glaciares de la Patagonia chilena como consecuencia de [&hellip;]<\/p>\n","protected":false},"author":2,"featured_media":45596,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","ast-disable-related-posts":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"default","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center 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