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The North Norfolk Coast Site of Special Scientific Interest (SSSI) is an area of European importance for wildlife in Norfolk, England. It comprises 7,700 ha (19,027 acres) of the county's north coast from just west of Holme-next-the-Sea to Kelling, and is additionally protected through Natura 2000, Special Protection Area (SPA) listings; it is also part of the Norfolk Coast Area of Outstanding Natural Beauty (AONB). The North Norfolk Coast is also designated as a wetland of international importance on the Ramsar list and most of it is a Biosphere Reserve. Habitats within the SSSI include reed beds, salt marshes, freshwater lagoons and sand or shingle beaches. The wetlands are important for wildlife, including some scarce breeding birds such as pied avocets, western marsh harriers, Eurasian bitterns and bearded reedlings. The location also attracts migrating birds including vagrant rarities. Ducks and geese winter along this coast in considerable numbers, and several nature reserves provide suitable conditions for water voles, natterjack toads and a number of scarce plants and invertebrates. The area is archaeologically significant, with artefacts dating back to the Upper Paleolithic. The mound of an Iron Age fort is visible at Holkham, and the site of a 23 ha (57 acres) Roman naval port with a fort built on the castrum pattern is just outside Brancaster. The site of the medieval "chapel" (probably a domestic dwelling) at Blakeney is no longer accessible. Remains of military use from both world wars include an armoured fighting vehicle gunnery range, a hospital and bombing ranges, as well as passive defences such as pillboxes, barbed wire and tank traps. The SSSI is economically important to the area because of the tourists it attracts for birdwatching and other outdoor activities, although sensitive wildlife sites are managed to avoid damage from the large numbers of visitors. Another threat is the encroachment of the sea on this soft coast. The Environment Agency considers that managed retreat is likely to be the long-term solution, and is working with the Norfolk Wildlife Trust to create new reserves inland to compensate for the loss of scarce habitats at the coast. == Description == The SSSI is a long, narrow strip of coast that starts at the eastern boundary of The Wash between Old Hunstanton and Holme-next-the-Sea, and runs east for about 43 km (27 mi) to Kelling. The southern boundary runs roughly west to east except where it detours around towns and villages, and never crosses the A149 coast road.〔 Retrieved 23 August 2012.〕 The SSSI has a wide variety of habitats, with bare mud, sand and shingle characterising the intertidal zone along the whole of the coast, although higher areas may have algae or eelgrass that are grazed by ducks and geese in winter. The salt marshes which form on sheltered coasts, in the lee of islands, or behind spits are described in the SSSI notification document as "among the best in Europe" due to their exceptionally diverse flora. Sand dunes occur at several places along the coast, but the best examples are at Holme Dunes, Holkham, Blakeney Point, and Scolt Head Island. The latter two sites are also important for geomorphology research purposes as structures consisting mainly of shingle ridges. Reed beds are fairly localised, but substantial areas occur at Titchwell Marsh, Brancaster and Cley Marshes. Grassland is represented by grazing pasture reclaimed from former salt marsh, with wetter areas at Cley and Salthouse marshes. Woodland is limited in the SSSI, although a belt of Corsican pine planted at Holkham has provided shelter for other trees and shrubs to become established.〔 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「North Norfolk Coast Site of Special Scientific Interest」の詳細全文を読む スポンサード リンク
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