There are 63

Sites of Special Scientific Interest A Site of Special Scientific Interest (SSSI) in Great Britain or an Area of Special Scientific Interest (ASSI) in the Isle of Man and Northern Ireland is a conservation designation denoting a protected area in the United Kingdom and Isle of ...

(SSSIs) in

Cheshire Cheshire ( ) is a ceremonial and historic county in North West England, bordered by Wales to the west, Merseyside and Greater Manchester to the north, Derbyshire to the east, and Staffordshire and Shropshire to the south. Cheshire's county tow ...

, England, covering a total area of 19,844 hectares (49,035 acres). Of these, 51 have been designated for their

biological Biology is the scientific study of life. It is a natural science with a broad scope but has several unifying themes that tie it together as a single, coherent field. For instance, all organisms are made up of cells that process hereditary in ...

interest, 7 for their

geological Geology () is a branch of natural science concerned with Earth and other astronomical objects, the features or rocks of which it is composed, and the processes by which they change over time. Modern geology significantly overlaps all other E ...

geomorphological Geomorphology (from Ancient Greek: , ', "earth"; , ', "form"; and , ', "study") is the scientific study of the origin and evolution of topographic and bathymetric features created by physical, chemical or biological processes operating at or ...

features, and 5 for both. SSSIs are governed by the

Wildlife and Countryside Act 1981 The Wildlife and Countryside Act 1981 is an Act of Parliament in the United Kingdom implemented to comply with European Council Directive 79/409/EEC on the conservation of wild birds. In short, the act gives protection to native species (especia ...

, which mandates that sites be selected for their "flora, fauna, or geological or physiographical features".''Guidelines for the Selection of Biological SSSIs'', Part A: "Rationale". (Nature Conservancy Council; 1989) (). Downloaded from , 14 April 2010. The body responsible for designating biological SSSIs in England is

Natural England Natural England is a non-departmental public body in the United Kingdom sponsored by the Department for Environment, Food and Rural Affairs. It is responsible for ensuring that England's natural environment, including its land, flora and fauna, ...

, which took over the role of designating and managing SSSIs from

English Nature English Nature was the United Kingdom government agency that promoted the conservation of wildlife, geology and wild places throughout England between 1990 and 2006. It was a non-departmental public body funded by the Department for Environmen ...

on its creation in 2006. Earth sciences SSSIs are notified separately by the

Joint Nature Conservation Committee The Joint Nature Conservation Committee (JNCC) is the public body that advises the UK Government and devolved administrations on UK-wide and international nature conservation. Originally established under the Environmental Protection Act 1990, J ...

across the entire UK via

Geological Conservation Review The Geological Conservation Review (GCR) is produced by the UK's Joint Nature Conservation Committee and is designed to identify those sites of national and international importance needed to show all the key scientific elements of the geological ...

. Natural England, like its predecessor bodies, uses a system of areas termed " Areas of Search", which broadly correspond with the 1974–1996 counties, and for consistency the same approach is followed here. In the case of Cheshire, the Area of Search differs from the modern

ceremonial county The counties and areas for the purposes of the lieutenancies, also referred to as the lieutenancy areas of England and informally known as ceremonial counties, are areas of England to which lords-lieutenant are appointed. Legally, the areas i ...

boundary. Since the 1990s,

nature conservation Nature conservation is the moral philosophy and conservation movement focused on protecting species from extinction, maintaining and restoring habitats, enhancing ecosystem services, and protecting biological diversity. A range of values unde ...

in England has also focused on 120 natural areas: regions defined by natural features rather than by administrative boundaries. The Cheshire Area of Search encompasses four natural areas. Cheshire Natural Areas

The majority of the SSSIs fall within the Meres and Mosses natural area, which covers the bulk of the county, extending into

Shropshire Shropshire (; alternatively Salop; abbreviated in print only as Shrops; demonym Salopian ) is a landlocked historic county in the West Midlands region of England. It is bordered by Wales to the west and the English counties of Cheshire to ...

and

Staffordshire Staffordshire (; postal abbreviation Staffs.) is a landlocked county in the West Midlands region of England. It borders Cheshire to the northwest, Derbyshire and Leicestershire to the east, Warwickshire to the southeast, the West Midlands C ...

to the south.English Nature: Meres and Mosses (27 February 1998)
(accessed 10 April 2010) This region is dominated by the

Cheshire Plain The Cheshire Plain is a relatively flat expanse of lowland within the county of Cheshire in North West England but extending south into Shropshire. It extends from the Mersey Valley in the north to the Shropshire Hills in the south, bounded b ...

, a wide expanse of flat or gently undulating farmland which rarely rises above 100 metres in elevation. Despite intensive agricultural use, diverse

wetland A wetland is a distinct ecosystem that is flooded or saturated by water, either permanently (for years or decades) or seasonally (for weeks or months). Flooding results in oxygen-free (Anoxic waters, anoxic) processes prevailing, especially in t ...

habitats survive including mosses (

bog A bog or bogland is a wetland that accumulates peat as a deposit of dead plant materials often mosses, typically sphagnum moss. It is one of the four main types of wetlands. Other names for bogs include mire, mosses, quagmire, and muskeg; a ...

s),

swamp A swamp is a forested wetland.Keddy, P.A. 2010. Wetland Ecology: Principles and Conservation (2nd edition). Cambridge University Press, Cambridge, UK. 497 p. Swamps are considered to be transition zones because both land and water play a role in ...

fen A fen is a type of peat-accumulating wetland fed by mineral-rich ground or surface water. It is one of the main types of wetlands along with marshes, swamps, and bogs. Bogs and fens, both peat-forming ecosystems, are also known as mires ...

s, meres and thousands of

pond A pond is an area filled with water, either natural or artificial, that is smaller than a lake. Defining them to be less than in area, less than deep, and with less than 30% emergent vegetation helps in distinguishing their ecology from tha ...

s. Flashes, originating in subsidence after salt extraction, contain examples of inland

salt marsh A salt marsh or saltmarsh, also known as a coastal salt marsh or a tidal marsh, is a coastal ecosystem in the upper coastal intertidal zone between land and open saltwater or brackish water that is regularly flooded by the tides. It is domin ...

, an extremely rare habitat internationally.

Ancient woodland In the United Kingdom, an ancient woodland is a woodland that has existed continuously since 1600 or before in England, Wales and Northern Ireland (or 1750 in Scotland). Planting of woodland was uncommon before those dates, so a wood present in 16 ...

is sparse throughout this area, but is found on the slopes of the

Mid Cheshire Ridge The Mid Cheshire Ridge is a range of low sandstone hills which stretch north to south through Cheshire in North West England. The ridge is discontinuous, with the hills forming two main blocks, north and south of the "Beeston Gap". The main mass ...

and in river valleys towards the north of the county. The lowland

heath A heath () is a shrubland habitat found mainly on free-draining infertile, acidic soils and characterised by open, low-growing woody vegetation. Moorland is generally related to high-ground heaths with—especially in Great Britain—a cooler a ...

habitat is very rare, occurring only at a handful of sites. The Mid Cheshire Ridge rises abruptly in the middle of the plain, with a high point of 227 metres; its

Triassic The Triassic ( ) is a geologic period and system which spans 50.6 million years from the end of the Permian Period 251.902 million years ago ( Mya), to the beginning of the Jurassic Period 201.36 Mya. The Triassic is the first and shortest per ...

sandstone Sandstone is a clastic sedimentary rock composed mainly of sand-sized (0.0625 to 2 mm) silicate grains. Sandstones comprise about 20–25% of all sedimentary rocks. Most sandstone is composed of quartz or feldspar (both silicat ...

s are exposed at the Raw Head geological site. Peckforton Hills 2

Two extensive sites,

Goyt Valley The River Goyt is a tributary of the River Mersey in North West England. Etymology The name ''Goyt'' may be derived from the Middle English ''gote'', meaning "a watercourse, a stream". Derivation from the Welsh ''gwyth'' meaning "vein" has be ...

and Leek Moors, lie at the eastern edge of the county and the south-western end of the

Pennines The Pennines (), also known as the Pennine Chain or Pennine Hills, are a range of uplands running between three regions of Northern England: North West England on the west, North East England and Yorkshire and the Humber on the east. Common ...

, within the South West Peak natural area of the

Peak District The Peak District is an Highland, upland area in England at the southern end of the Pennines. Mostly in Derbyshire, it extends into Cheshire, Greater Manchester, Staffordshire, West Yorkshire and South Yorkshire. It includes the Dark Peak, whe ...

.Natural England: The South West Peak Natural Area Profile
(accessed 13 April 2010) At a significantly higher elevation than the other Cheshire SSSIs and underlain by millstone grit and

shale Shale is a fine-grained, clastic sedimentary rock formed from mud that is a mix of flakes of clay minerals (hydrous aluminium phyllosilicates, e.g. kaolin, Al2 Si2 O5( OH)4) and tiny fragments (silt-sized particles) of other minerals, especiall ...

, they contain a variety of upland habitats, predominantly heather

moorland Moorland or moor is a type of habitat found in upland areas in temperate grasslands, savannas, and shrublands and montane grasslands and shrublands biomes, characterised by low-growing vegetation on acidic soils. Moorland, nowadays, generall ...

grassland A grassland is an area where the vegetation is dominated by grasses ( Poaceae). However, sedge ( Cyperaceae) and rush ( Juncaceae) can also be found along with variable proportions of legumes, like clover, and other herbs. Grasslands occur na ...

and

blanket mire 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 o ...

. Ten SSSIs are located in

Warrington Warrington () is a town and unparished area in the borough of the same name in the ceremonial county of Cheshire, England, on the banks of the River Mersey. It is east of Liverpool, and west of Manchester. The population in 2019 was estimat ...

and the former boroughs of Halton and Ellesmere Port & Neston, in the north-west of the county. These fall within the Urban Mersey Basin natural area, which also covers

Greater Manchester Greater Manchester is a metropolitan county and combined authority area in North West England, with a population of 2.8 million; comprising ten metropolitan boroughs: Manchester, Salford, Bolton, Bury, Oldham, Rochdale, Stockport, Tam ...

and

Merseyside Merseyside ( ) is a metropolitan and ceremonial county in North West England, with a population of 1.38 million. It encompasses both banks of the Mersey Estuary and comprises five metropolitan boroughs: Knowsley, St Helens, Sefton, Wir ...

. Although the area as a whole is one of the most densely populated regions in Europe, much of the area within Cheshire is farmland. Semi-natural habitats here include ancient woodland,

raised bog Raised bogs, also called ombrotrophic bogs, are acidic, wet habitats that are poor in mineral salts and are home to flora and fauna that can cope with such extreme conditions. Raised bogs, unlike fens, are exclusively fed by precipitation ( omb ...

and freshwater wetland. The

Rixton Clay Pits Rixton Clay Pits (also known as Rixton Claypits) is a former clay extraction site in Rixton, near Hollins Green, Warrington, England. Formerly farmland, boulder clay extraction started in the 1920s for brick making in the adjacent brickworks, and ...

site represents former industrial land, and railway cuttings expose geological features.English Nature: The Urban Mersey Basin Natural Area: A Nature Conservation Profile (March 1997)
(accessed 13 April 2010) Finally, the Liverpool Bay coastal region contains two

estuaries An estuary is a partially enclosed coastal body of brackish water with one or more rivers or streams flowing into it, and with a free connection to the open sea. Estuaries form a transition zone between river environments and maritime environme ...

, the

Mersey The River Mersey () is in North West England. Its name derives from Old English and means "boundary river", possibly referring to its having been a border between the ancient kingdoms of Mercia and Northumbria. For centuries it has formed part ...

and Dee, which are Cheshire's largest SSSIs.Natural England: Liverpool Bay Natural Area: A nature conservation profile (29 October 1997)
(accessed 14 April 2010)

Sites

Notes

All tabulated data are sourced from the Natural England website, and were last updated on 1 March 2010.SSSI background data (Cheshire) – compiled 01 Mar 2010
Retrieved fro

11 April 2010. Data rounded to one decimal place. Area in acres converted from hectare value. Grid reference is based on the

British national grid reference system The Ordnance Survey National Grid reference system (OSGB) (also known as British National Grid (BNG)) is a system of geographic grid references used in Great Britain, distinct from latitude and longitude. The Ordnance Survey (OS) devised the ...

, also known as OSGB36, and is the system used by the

Ordnance Survey Ordnance Survey (OS) is the national mapping agency for Great Britain. The agency's name indicates its original military purpose (see ordnance and surveying), which was to map Scotland in the wake of the Jacobite rising of 1745. There was a ...

. Link to maps using the ''Nature on the Map'' service provided by

.Natural England: Nature on the Map: Welcome to Nature on the Map
(accessed 15 April 2010) Natural England citation sheets for each SSSI. The River Dane and Holly Banks SSSIs overlap.

References

{{SSSI AOS lists

Sites of Special