Bog

A bog is a wetland type that accumulates acidic peat, a deposit of dead plant material. The term peat bog in common usage is not entirely redundant, although it would be proper to call these sphagnum bogs if the peat is composed mostly of acidophilic moss (peat moss or Sphagnum spp.). Lichens are a principal component of peat in the far north. Moisture is provided entirely by precipitation and for this reason bog waters are acidic and termed ombrotrophic (or cloud-fed) which accounts for their low plant nutrient status. Excess rainfall outflows giving bog waters a distinctive tan colour.

World's largest wetlands

The world's largest wetlands are the bogs of the Western Siberian Lowlands in Russia which cover more than 600,000 square kilometres.

Related Topics:
Siberian - Russia - 600,000 square kilometres

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"The world's largest frozen peat bog is melting. An area stretching for a million square kilometres across the permafrost of western Siberia is turning into a mass of shallow lakes as the ground melts, according to Russian researchers just back from the region. The sudden melting of a bog the size of France and Germany combined could unleash billions of tonnes of methane, a potent greenhouse gas, into the atmosphere." newscientist

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