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Thorley Wash or Thorley Flood Pound is a 17.3 hectare biological Site of Special Scientific Interest in Thorley, south of Bishop's Stortford in Hertfordshire.It was formerly a flood pound for the Stort Navigation, which was decommissioned in 2004 and converted to a more natural state. It was purchased by the Herts and Middlesex Wildlife Trust from the Environment Agency in 2011.
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 Man. SSSI/ASSIs are the basic building block of site-based nature conservation legislation and most other legal nature/geological conservation designations in the United Kingdom are based upon them, including national nature reserves, Ramsar sites, Special Protection Areas, and Special Areas of Conservation. The acronym "SSSI" is often pronounced "triple-S I".
Thorley is a village and civil parish in East Hertfordshire district of Hertfordshire, England. The parish includes the hamlets of Thorley Street, Thorley Wash and Old Thorley, and is bordered at the north to the market town of Bishop's Stortford.
Bishop's Stortford is a historic English market town and civil parish in Hertfordshire, just west of the M11 motorway on the county boundary with Essex. It is the closest sizeable town to London Stansted Airport, 27 miles (43 km) north-east of Charing Cross in central London, and 35 miles (56 km) by rail from Liverpool Street station, the London terminus of the line to Cambridge that runs through the town. Bishop's Stortford had a population of 38,202 in 2001, easing to 37,838 at the 2011 Census.
Habitats include tall wash grassland, which is now rare, marsh and waterlogged grassland. It has a wide variety of plant species, including reed sweet-grass and meadowsweet. There are flowers such as fen bedstraw and early marsh orchid. Breeding birds include snipe and water rails.The site also has the endangered Desmoulin's whorl snail, which is in the Red Date Book, together with diverse dragonflies, damselflies, birds, bats, small mammals and reptiles.
Galium uliginosum or fen bedstraw is a plant species of the genus Galium. It is widespread across most of Europe as well as Morocco, Western Siberia, Turkey, Kazakhstan and Xinjiang. It is reportedly naturalized in New Zealand, Greenland and the Crozet Islands.
Desmoulin's whorl snail is a species of minute air-breathing land snail, a terrestrial pulmonate gastropod mollusc or micromollusc in the family Vertiginidae, the whorl snails.
The IUCN Red List of Threatened Species, founded in 1965, has evolved to become the world's most comprehensive inventory of the global conservation status of biological species. It uses a set of criteria to evaluate the extinction risk of thousands of species and subspecies. These criteria are relevant to all species and all regions of the world, With its strong scientific base, the IUCN Red List is recognized as the most authoritative guide to the status of biological diversity. A series of Regional Red List are produced by countries or organizations, which assess the risk of extinction to species within a political management unit.
There are five wooden sculptures by Daniel Cordell, commissioned by the Wildlife Trust in 2012.
The Stort Navigation forms the boundary between Hertfordshire and Essex, and the site is on the Hertfordshire bank, but access is by a bridge from the towpath on the eastern Essex side. Access is restricted to footpaths due to the dangerous deep silt on the site.
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Aldbury Nowers is a 19.7 hectare biological Site of Special Scientific Interest (SSSI) in the Chiltern Hills, north-east of Tring in Hertfordshire. The site was notified in 1990 under the Wildlife and Countryside Act 1981. It is managed by the Hertfordshire and Middlesex Wildlife Trust. The site, formerly known as "Duchie's Piece," comprises two areas of hillside, linked by The Ridgeway. The calcareous meadow element of the site hosts the flowers of chalk grassland and has butterfly habitats with thirty-four different species of butterfly recently recorded, including the Duke of Burgundy, hairstreaks and the Essex skipper. The site also includes a "beech hanger", a type of upland ancient woodland, and is considered one of the best examples of this feature in Hertfordshire.
Patmore Heath is a 7.6 hectare biological Site of Special Scientific Interest in East Hertfordshire, 2 kilometres north-east of Albury, Hertfordshire. The site was notified in 1985 under the Wildlife and Countryside Act 1981. Patmore Heath is home to a large amount of dry grass, as well as marshy-areas. Lots of the turf throughout the SSSI is dominated by Deschampsia, as well as occurrences of Anthoxanthum odoratum.
Wormley-Hoddesdonpark Wood North is a 143.9 hectare woodland area in Hertfordshire which has been designated as a biological site of Special Scientific Interest. The site is listed as Grade 1 in A Nature Conservation Review, and is also designated a Special Area of Conservation. It is near Hoddesdon in the borough of Broxbourne, but part of the site is in East Hertfordshire.
Herts and Middlesex Wildlife Trust manages over 40 nature reserves covering nearly 810 hectares north of London, in Hertfordshire and the former county of Middlesex, which is now divided between the London boroughs of Barnet, Enfield, Harrow and Hillingdon. It has over 21,000 members, and is one of 47 Wildlife Trusts across the UK. It is a Registered Charity, with its Registered Office in St Albans, and had an income in the year to 31 March 2014 of over £1.5 million.
Rye Meads is a 58.5 hectare biological Site of Special Scientific Interest (SSSI) in Rye House, Hertfordshire. It is one of series of wetlands and reservoirs situated along the River Lea, to the north-east of London. It is part of the Lea Valley RAMSAR site and a Special Protection Area.
Old Park Wood is a 16.7-hectare (41-acre) Site of Special Scientific Interest in Harefield in the London Borough of Hillingdon. The south-east part is an 8-hectare (20-acre) nature reserve owned and managed by the Hertfordshire and Middlesex Wildlife Trust.
Frogmore Meadows is a 4.6 hectare biological Site of Special Scientific Interest in Hertfordshire and Buckinghamshire, north of the village of Chenies. It consists of two meadows in the Chilterns Area of Outstanding Natural Beauty, next to the River Chess, one of which is a Hertfordshire and Middlesex Wildlife Trust nature reserve. The planning authorities are Three Rivers District Council, Dacorum Borough Council and Chiltern District Council.
Hunsdon Mead is a 34 hectare biological Site of Special Scientific Interest (SSSI) west of Harlow in Essex. The site is partly in Essex and partly in Hertfordshire, and it is jointly owned and managed by the Essex Wildlife Trust and the Herts and Middlesex Wildlife Trust. The SSSI also includes part of the neighbouring Roydon Mead. The planning authorities are East Hertfordshire District Council and Epping Forest District Council. Hunsdon Mead is registered common land.
Sawbridgeworth Marsh is a 6.3 hectare biological Site of Special Scientific Interest (SSSI) near Sawbridgeworth in Hertfordshire, apart from a small area in the north which is in Essex. It is managed by the Essex Wildlife Trust. The planning authorities are East Hertfordshire District Council and Uttlesford District Council.
Blagrove Common is a 4.0 hectare Site of Special Scientific Interest in Green End near Sandon in Hertfordshire. It is managed by the Hertfordshire and Middlesex Wildlife Trust, and the planning authority is North Hertfordshire District Council.
Hertford Heath nature reserve is a 28 hectare biological Site of Special Scientific Interest in Hertford Heath in Hertfordshire. It is managed by the Herts and Middlesex Wildlife Trust and the local planning authority is East Hertfordshire District Council.
Tewinbury is a 7.5 hectare biological Site of Special Scientific Interest near Tewin in Hertfordshire. The local planning authority is East Hertfordshire District Council, and the site is managed by the Herts and Middlesex Wildlife Trust
Fox Covert is a 2.9 hectare nature reserve near Royston in North Hertfordshire. It is owned and managed by the Herts and Middlesex Wildlife Trust.
Telegraph Hill is a nature reserve near Lilley in north Hertfordshire. Between 1796 and 1814 it was a telegraph station, one of the links in the chain between Great Yarmouth and London during the Napoleanic wars. It is in the Chilterns Area of Outstanding Natural Beauty (AONB), and close to Deacon Hill SSSI. According to the Chilterns AONB the hill is owned by the Herts and Middlesex Wildlife Trust; a notice on the site says that it is managed by the trust, but it is not listed on the trust's web site as one of its reserves.
King's Meads is a nature reserve in Ware in Hertfordshire. It is managed by the Herts and Middlesex Wildlife Trust, and with an area of 96 hectares it is the largest of the Trust's reserves. The site has been registered by the Trust as Common land, but the registration for some areas was disallowed due to objections.
Danemead is a 5.6 hectare nature reserve west of Hoddesdon in Hertfordshire, managed by the Herts and Middlesex Wildlife Trust. It is part of the Wormley-Hoddesdonpark Wood North Site of Special Scientific Interest.
Little Hallingbury Marsh is a 4.5 hectare biological Site of Special Scientific Interest adjacent to the River Stort, west of Little Hallingbury in Essex. It was notified under Section 28 of the Wildlife and Countryside Act 1981, and the local planning authority is Uttlesford District Council.
A geographic coordinate system is a coordinate system that enables every location on Earth to be specified by a set of numbers, letters or symbols. The coordinates are often chosen such that one of the numbers represents a vertical position and two or three of the numbers represent a horizontal position; alternatively, a geographic position may be expressed in a combined three-dimensional Cartesian vector. A common choice of coordinates is latitude, longitude and elevation. To specify a location on a plane requires a map projection.