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{"id":809,"date":"2021-06-15T18:43:33","date_gmt":"2021-06-15T23:43:33","guid":{"rendered":"https:\/\/www.conservamospornaturaleza.org\/rioslibres\/?post_type=razones&p=809"},"modified":"2021-08-11T15:07:51","modified_gmt":"2021-08-11T20:07:51","slug":"barrera-para-peces-migratorios","status":"publish","type":"razones","link":"https:\/\/www.conservamospornaturaleza.org\/rioslibres\/razones\/barrera-para-peces-migratorios\/","title":{"rendered":"BARRERA PARA PECES MIGRATORIOS"},"content":{"rendered":"

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4<\/p>\n<\/div>

BARRERA PARA PECES MIGRATORIOS<\/p>\n<\/div>

La represa obstaculizar\u00eda el viaje de los peces en diferentes etapas de su vida, y de ellos dependen miles de personas y animales.<\/p>\n<\/div><\/div><\/div>

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La construcci\u00f3n de represas en el r\u00edo Mara\u00f1\u00f3n podr\u00eda implicar la reducci\u00f3n de poblaci\u00f3n \u2014y, en algunos casos, la desaparici\u00f3n completa\u2014 de especies de peces: fuente importante de prote\u00edna para las comunidades ribere\u00f1as y uno de los factores clave de la red alimentaria en el r\u00edo. Un informe de Wildlife Conservation Society se\u00f1ala que las comunidades awaj\u00fan cercanas al pongo de Manseriche (Amazonas), donde se hab\u00eda planteado construir una megarrepresa, consumen a diario aproximadamente 500 gramos de pescado por persona<\/strong>. Al interrumpir la migraci\u00f3n de peces se estar\u00eda afectando la dieta de poblaciones aleda\u00f1as al cauce del r\u00edo.<\/p>\n

Estudios estiman que unas 700 especies de peces habitan<\/strong> en la cuenca del r\u00edo Mara\u00f1\u00f3n, una cifra que casi duplica la cantidad de especies<\/strong> que se encuentran en los ecosistemas de agua dulce en toda la Uni\u00f3n Europea, de acuerdo con c\u00e1lculos de Freyhofe y Brooks (2011). Las represas crear\u00edan grandes \u00e1reas en las cuales el agua quedar\u00eda estancada y resultar\u00eda eutrofizada. Dichas zonas ser\u00edan inhabitables para las especies que, con el paso de los siglos, se han adaptado a las fuertes corrientes del r\u00edo Mara\u00f1\u00f3n, seg\u00fan un art\u00edculo publicado en la revista Science Advances.<\/p>\n<\/div><\/div><\/div>

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