The Ordnance Survey National Grid reference system is a system of geographic grid references used in Great Britain, distinct from latitude and longitude. It is often called British National Grid (BNG).
The hectare is an SI accepted metric system unit of area equal to a square with 100-metre sides, or 10,000 m2, and is primarily used in the measurement of land. There are 100 hectares in one square kilometre. An acre is about 0.405 hectare and one hectare contains about 2.47 acres.
Wiltshire is a county in South West England with an area of 3,485 km2. It is landlocked and borders the counties of Dorset, Somerset, Hampshire, Gloucestershire, Oxfordshire and Berkshire. The county town was originally Wilton, after which the county is named, but Wiltshire Council is now based in the county town of Trowbridge.
Ophrys apifera, known in Europe as the bee orchid, is a perennial herbaceous plant of the family Orchidaceae. It is remarkable as an example of sexually-deceptive pollination and floral mimicry as well as of a highly-selective and highly evolved plant-pollinator relationship.
The chalkhill blue is a butterfly in the family Lycaenidae.
Hamearis lucina, the Duke of Burgundy, the only member of the genus Hamearis, is a European butterfly in the family Riodinidae. For many years, it was known as the "Duke of Burgundy fritillary", because the adult's chequered pattern is strongly reminiscent of "true" fritillaries of the family Nymphalidae.
The pearl-bordered fritillary is a butterfly of the family Nymphalidae found in Europe and northern Asia.
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.
Hawkley Warren is a woodland on the northeast-facing Wealden Edge, near the village of Hawkley, three miles north of Petersfield in Hampshire. The site is situated in a deep chalk combe.
Box Mine is a 56.6 ha biological Site of Special Scientific Interest, near the village of Box in Wiltshire, England, notified in 1991.
Baverstock Juniper Bank is a 2.6 hectare Biological Site of Special Scientific Interest to the north of the village of Baverstock in Wiltshire, England. Baverstock Juniper Bank is within the Cranborne Chase and West Wiltshire Downs Area of Outstanding Natural Beauty. The ungrazed chalk grassland is home to over 500 bushes of the lowland juniper, Juniperus communis, subspecies communis. Their seeds attract flocks of finches and yellowhammers to the location as a feeding site in winter. Uncommon species such a horseshoe vetch and pyramidal orchid are to be found at the SSSI. Butterfies such as the brimstone, speckled wood and small heath have been seen visiting the site.
Parsonage Down is a 188.6 hectare biological Site of Special Scientific Interest in Wiltshire, notified in 1971. The site is a national nature reserve in regocnition it’s importance as part of the Salisbury Plain landscape and calcareous grassland it supports.
Pewsey Downs is a 305.3 hectare biological Site of Special Scientific Interest on the southern edge of the Marlborough Downs north of Pewsey in Wiltshire, notified in 1951. It includes the Pewsey Downs National Nature Reserve.
Haydon Meadow known locally as Clifford Meadow is a 6.39 hectare biological Site of Special Scientific Interest in Wiltshire, notified in 1999.
North Meadow, Cricklade is a hay meadow near the town of Cricklade, in Wiltshire, England. It is 24.6 hectares in size. It is a traditionally managed lowland hay-meadow, or lammas land, and is grazed in common between 12 August and 12 February each year, and cut for hay no earlier than 1 July. This pattern of land use and management has existed for many centuries and has resulted in the species rich grassland flora and fauna present on the site.
Rex Graham Reserve is a 2.8 hectare biological Site of Special Scientific Interest east of Mildenhall in Suffolk. It is a Special Area of Conservation, and part of the Breckland Special Protection Area. It was formerly managed by the Suffolk Wildlife Trust.
Queendown Warren is a 22.2-hectare (55-acre) biological Site of Special Scientific Interest south-east of Rainham in Kent. It is a Local Nature Reserve, a Nature Conservation Review site, Grade 2, and a Special Area of Conservation.. It is in the Kent Downs Area of Outstanding Natural Beauty. It is managed by the Kent Wildlife Trust, and part of it is owned by Plantlife.
Sewell Cutting is a 3.6 hectare nature reserve at Sewell in Houghton Regis in Bedfordshire. It is owned by Central Bedfordshire Council and managed by the Wildlife Trust for Bedfordshire, Cambridgeshire and Northamptonshire.
Totternhoe Knolls is a 13.1 hectare Site of Special Scientific Interest (SSSI) in Totternhoe in Bedfordshire. It is also a Local Nature Reserve, and part of the Chilterns Area of Outstanding Natural Beauty. The site is owned by Central Bedfordshire Council and leased to the National Trust. Most of the site is maintained jointly by the National Trust and the Wildlife Trust for Bedfordshire, Cambridgeshire and Northamptonshire (WTBCN), and is part of the WTBCN Totternhoe nature reserve, which also includes Totternhoe Chalk Quarry and Totternhoe Stone Pit. The SSSI also includes Totternhoe Castle, the earthworks of a Norman motte-and-bailey castle which is a Scheduled Monument.
Totternhoe Chalk Quarry is a 13.4 hectare biological Site of Special Scientific Interest in Totternhoe in Bedfordshire. Part of it lies in Totternhoe nature reserve, which is managed by the Wildlife Trust for Bedfordshire, Cambridgeshire and Northamptonshire. The site is part of the Chilterns Area of Outstanding Natural Beauty.
Barnack Hills & Holes is a 23.3 hectare biological Site of Special Scientific Interest in Barnack in Cambridgeshire. It is also a national nature reserve. It is a Nature Conservation Review site, Grade I. In 2002 it was designated as a Special Area of Conservation, to protect the orchid rich grassland as part of the Natura 2000 network of sites throughout the European Union.
The Turnford and Cheshunt Pits is a biological Site of Special Scientific Interest near Cheshunt in Hertfordshire and Essex and covers a total of 428.17 acres. It is part of the Lee Valley Special Protection Area.
Aston Rowant National Nature Reserve is located on the north-west escarpment of the Chiltern Hills, in the Chilterns Area of Outstanding Natural Beauty. It has an area of 159.1 hectares, and most of it is a 128.5 hectare biological Site of Special Scientific Interest. It is listed as a Grade 1 site in A Nature Conservation Review. The reserve is in several sections, mostly in the parish of Lewknor in Oxfordshire, with smaller sections in the parish of Stokenchurch in Buckinghamshire.
Stanmore Common is a 49.2-hectare public park, Local Nature Reserve and Site of Metropolitan Importance for Nature Conservation in Stanmore in the London Borough of Harrow in England. It is owned by Harrow Council and managed by the council with a local group. It was a biological Site of Special Scientific Interest, but was de-notified in the early 1990s.
Bacombe and Coombe Hills is a 76.4 hectare biological Site of Special Scientific Interest in Upper Bacombe in Buckinghamshire. Bacombe Hill was formerly owned by Buckinghamshire County Council, which transferred it to Berkshire, Buckinghamshire and Oxfordshire Wildlife Trust in 2014. Coombe Hill is owned by the National Trust.
Aston Clinton Ragpits is a 2.9 hectare biological Site of Special Scientific Interest in Aston Clinton in Buckinghamshire. It is a former chalk quarry, which is now a nature reserve managed by the Berkshire, Buckinghamshire and Oxfordshire Wildlife Trust. It is in the Chilterns Area of Outstanding Natural Beauty.
Belcher's and Broadfield Woods is a 14.4 hectare biological Site of Special Scientific Interest between Halstead and Braintree in Essex. It is managed by the Essex Wildlife Trust as the Brookes Nature Reserve.
Betchworth Quarry and Lime Kilns is a 27-hectare (67-acre) nature reserve west of Betchworth in Surrey. It is managed by the Surrey Wildlife Trust. It is part of the Mole Gap to Reigate Escarpment Site of Special Scientific Interest and Special Area of Conservation.
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