Quando trilhões de criaturas emergem das profundezas do oceano

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🌱 Environment & Climate

Quando trilhões de criaturas emergem das profundezas do oceano 07.07.2026

BBC

A zona mesopelágica do oceano, ou zona crepuscular, abriga a maior migração animal natural do mundo, conhecida como migração vertical diária (DVM). Todas as noites, trilhões de organismos, incluindo uma biomassa massiva de zooplâncton e copépodes, sobem de profundidades de até 1.000m para se alimentar de fitoplâncton superficial. Esse movimento noturno, que se assemelha a uma "ola" global, desempenha um papel vital no clima da Terra ao transportar até seis gigatoneladas de carbono anualmente das águas superficiais para o oceano profundo. Especialistas como Jon Copley e Laura Hobbs destacam que essa "sopa viva" é essencial para o ciclo de nutrientes e teias alimentares. No entanto, este ecossistema crítico enfrenta ameaças significativas devido às mudanças climáticas e potenciais pesqueiras de águas profundas, levando a IUCN a pedir uma pausa na pesca mesopelágica para proteger toda a coluna de água.

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