Astley and Bedford Mosses
Encyclopedia
Astley and Bedford Mosses are areas of peat
Peat
Peat is an accumulation of partially decayed vegetation matter or histosol. Peat forms in wetland bogs, moors, muskegs, pocosins, mires, and peat swamp forests. Peat is harvested as an important source of fuel in certain parts of the world...

 bog
Bog
A bog, quagmire or mire is a wetland that accumulates acidic peat, a deposit of dead plant material—often mosses or, in Arctic climates, lichens....

 south of the Bridgewater Canal
Bridgewater Canal
The Bridgewater Canal connects Runcorn, Manchester and Leigh, in North West England. It was commissioned by Francis Egerton, 3rd Duke of Bridgewater, to transport coal from his mines in Worsley to Manchester...

 and north of the Liverpool and Manchester Railway
Liverpool and Manchester Railway
The Liverpool and Manchester Railway was the world's first inter-city passenger railway in which all the trains were timetabled and were hauled for most of the distance solely by steam locomotives. The line opened on 15 September 1830 and ran between the cities of Liverpool and Manchester in North...

 in Astley
Astley, Greater Manchester
Astley is a settlement within the Metropolitan Borough of Wigan in Greater Manchester, England, variously described as a suburb or a village. Astley lies on flat land to the northwest of the city of Manchester, and is crossed by the Bridgewater Canal and the A580 "East Lancashire Road"...

 and Bedford
Bedford, Greater Manchester
Bedford, a suburb of Leigh, Greater Manchester is one of three ancient townships, Bedford, Pennington and Westleigh, that merged in 1875 to form the town of Leigh.-Toponymy:...

, Greater Manchester
Greater Manchester
Greater Manchester is a metropolitan county in North West England, with a population of 2.6 million. It encompasses one of the largest metropolitan areas in the United Kingdom and comprises ten metropolitan boroughs: Bolton, Bury, Oldham, Rochdale, Stockport, Tameside, Trafford, Wigan, and the...

, England. They are among the last remaining fragments of Chat Moss
Chat Moss
Chat Moss is a large area of peat bog that makes up 30 percent of the City of Salford, in Greater Manchester, England. It is north of the River Irwell, to the west of Manchester, and occupies an area of about...

, the raised bog that once covered a large area of south Lancashire north of the River Mersey
River Mersey
The River Mersey is a river in North West England. It is around long, stretching from Stockport, Greater Manchester, and ending at Liverpool Bay, Merseyside. For centuries, it formed part of the ancient county divide between Lancashire and Cheshire....

. Astley Moss was designated a Site of Special Scientific Interest in 1989. Astley and Bedford Mosses, along with Risley Moss
Risley Moss
Risley Moss is an area of peat bog situated near Birchwood in Warrington, England. It covers an area of and is one of the last remaining fragments of the raised bogs that once covered large areas of South Lancashire and North Cheshire...

 and Holcroft Moss, are part of Manchester Mosses, a European Union
European Union
The European Union is an economic and political union of 27 independent member states which are located primarily in Europe. The EU traces its origins from the European Coal and Steel Community and the European Economic Community , formed by six countries in 1958...

 designated Special Area of Conservation
Special Area of Conservation
A Special Area of Conservation is defined in the European Union's Habitats Directive , also known as the Directive on the Conservation of Natural Habitats and of Wild Fauna and Flora...

.

Ecology

Chat Moss, a lowland raised bog, formed after the last ice age
Ice age
An ice age or, more precisely, glacial age, is a generic geological period of long-term reduction in the temperature of the Earth's surface and atmosphere, resulting in the presence or expansion of continental ice sheets, polar ice sheets and alpine glaciers...

 about 10,000 years ago on the site of a shallow glacial lake to the north of the River Mersey. Fen
Fen
A fen is a type of wetland fed by mineral-rich surface water or groundwater. Fens are characterised by their water chemistry, which is neutral or alkaline, with relatively high dissolved mineral levels but few other plant nutrients...

 peat formed in an area colonised by reeds and rushes. Sphagnum mosses then colonised the area causing a change from fen to bog peat which became elevated forming a dome, the raised bog. Sphagnum mosses increase the acidity of the water resulting in highly specialised plant species, many of them found no-where else.
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