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Criopeg

Le criopeg sono lenti di acqua salata perennemente raffreddate o uno strato di terreno non ghiacciato che è permanentemente criotico (che fa parte del permafrost), ma il congelamento è impedito dalla depressione del punto di congelamento dovuta al contenuto di solidi disciolti o all’acqua dei pori.

Le criopeg costituiscono l’unico habitat sulla Terra caratterizzato da temperature permanentemente sotto lo zero, alta salinità e isolamento dall’influenza di fattori esterni durante il tempo geologico. Le criopeg sono habitat per microrganismi, come i batteri

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