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Miércoles, 16 Octubre 2019

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La capa de nieve más baja de los últimos 500 años en la Sierra Nevada de California

sierraNevadaCalifornia 180La capa de nieve más baja de los últimos 500 años en la Sierra Nevada de California / El Mundo / El cambio climático y la sequía que azota a California desde hace cuatro años están acabando con lo que no lograron 675.000 años de glaciaciones.

La capa de nieve en las montañas californianas de Sierra Nevada durante este año 2015 se encuentra en el nivel más bajo de los últimos 500 años , según recoge un nuevo estudio dirigido por la Universidad de Arizona, en EEUU.y publicado en la revista Nature Climate Change.

Si no hay nieve, no hay agua, y desde hace años en California cada vez nieva menos. Ni siquiera las lluvias torrenciales y nevadas más grandes de lo habitual que se esperan para este invierno por el fenómeno meteorológico de El Niño parecen estabilizar la situación.

Este equipo de investigación, liderado por la profesora Valerie Trouet y Soumaya Belmecheri, alerta del bajo nivel de nieve en las montañas californianas de Sierra Nevada comparándolo con los niveles de nieve registrados durante los últimos cinco siglos.

"El aumento de temperaturas conducirá a sequías con mucha más frecuencia que rebajarán los niveles de nieve, por eso debemos estar preparados" asegura Trouet. "El calentamiento antropogénico está provocando que la sequía sea aún más severa."

KEVIN ANCHUKAITIS

Internacional

El tratamiento de efluentes cloacales, un dolor de cabeza

contaminacion 190La problemática de líquidos cloacales que se tiran crudos al lago Nahuel Huapi, está en plena ebullición social. Desde el gobierno provincial se asegura que el espejo de agua se mantiene sin contaminar. Sin embargo ediles opositores, del Frente para la Victoria (FpV), presentaron sus quejas al respecto. Además sectores ambientalistas también están preocupados por “el colapso” de la Planta Depuradora que funciona al Este de la ciudad.



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Obama, el tercer presidente de EEUU en visitar el Parque Nahuel Huapi

deaa2 200El mandatario se convertirá el próximo jueves 24 marzo 2016, en el tercer presidente de los Estados Unidos que visita el parque Nacional Nahuel Huapi, una región de gran belleza y riqueza natural que fue recorrida también por Teodoro Roosevelt en 1913 y Bill Clinton en 1995.

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Convenio para recuperar parque Doña Menca de Leoni

pn_firma_convenio196Este lunes 13 de diciembre, el presidente de Inparques, Leonardo Millán, y la presidenta de la Corporación Apureña de Turismo (Coratur), Maruska González, firmaron un convenio para recuperar y acondicionar las diferentes áreas del Parque de Recreación Doña Menca de Leoni, ubicado en el Municipio Biruaca, cerca de San Fernando de Apure, capital del estado.

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Tortugas peninsulares

timthumbA finales de la década de los ochenta, el Centro de Investigación y Conservación de Tortugas Marinas (Cictmar) en conjunto con la Fundación para la Defensa de la Naturaleza se propusieron evaluar la situación de las tortugas marinas en la costa venezolana. 19 años después Cictmar estableció su primer campamento en la playa de Cipara, en el norte de la península de Paria. En 2002, llegó el segundo campamento, en playa Querepare.

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