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Concept
Blanket bog
Summary
Blanket bog or blanket mire, also known as featherbed bog, is an area of peatland, forming where there is a climate of high rainfall and a low level of evapotranspiration, allowing peat to develop not only in wet hollows but over large expanses of undulating ground. The blanketing of the ground with a variable depth of peat gives the habitat type its name. Blanket bogs are found extensively throughout the northern hemisphere - well-studied examples are found in Ireland and Scotland, but vast areas of North American tundra also qualify as blanket bogs. In Europe, the southernmost edge of range of this habitat has been recently mapped in the Cantabrian Mountains, northern Spain, but the current distribution of blanket bogs globally remains unknown.
In the southern hemisphere they are less well-developed due to the relatively low latitudes of the main land areas, though similar environments are reported in Patagonia, the Falkland Islands and New Zealand. The blanket bogs known as 'featherbeds' on subantarctic Macquarie Island occur on raised marine terraces; they may be up to deep, tremble or quake when walked on and can be hazardous to cross. It is doubtful whether the extremely impoverished flora of Antarctica is sufficiently well developed to be considered as blanket bogs.
In some areas of Europe, the spread of blanket bogs is traced to deforestation by prehistoric cultures.
In many areas peat is used as a fossil fuel either in electricity generation or domestic solid fuel for heating. In the Republic of Ireland a state-owned company, Bord na Móna, owns large areas of bogland and harvests peat for electricity generation.
Official source
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