The Wadden Sea World Heritage Site
La mer des Wadden, Netherlands
MARINE PROTECTED AREA
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The Wadden Sea (Dutch: Waddenzee, German: Wattenmeer, Low German: Wattensee or Waddenzee, Danish: Vadehavet, West Frisian: Waadsee) is an intertidal zone in the southeastern part of the North Sea. It lies between the coast of northwestern continental Europe and the range of Frisian Islands, forming a shallow body of water with tidal flats and wetlands. It is rich in biological diversity. In 2009, the Dutch and German parts of the Wadden Sea were inscribed on UNESCO's World Heritage List and the Danish part was added in June 2014.
The Wadden Sea is one of the world's seas whose coastline has been most modified by humans, via systems of dikes and causeways on the mainland and low lying coastal islands. The Wadden Sea stretches from Den Helder in the Netherlands in the southwest, past the great river estuaries of Germany to its northern boundary at Skallingen north of Esbjerg in Denmark along a total length of some 500 km and a total area of about 10,000 km². Within the Netherlands it is bounded from the IJsselmeer by the Afsluitdijk.
The islands in the Wadden Sea are called the Wadden Sea Islands or Frisian Islands, named after the Frisians. However, on the westernmost Dutch island, Texel, the Frisian language has not been spoken for centuries. The Danish Wadden Sea Islands have never been inhabited by Frisians. The outlying German island of Helgoland, although ethnically one of the Frisian Islands, is not situated in the Wadden Sea.
The German part of the Wadden Sea was the setting for the 1903 Erskine Childers novel The Riddle of the Sands.
The word wad is Dutch for "mud flat" (Low German and German: Watt, Danish: Vade). The area is typified by extensive tidal mud flats, deeper tidal trenches (tidal creeks) and the islands that are contained within this, a region continually contested by land and sea. The landscape has been formed for a great part by storm tides in the 10th to 14th centuries, overflowing and carrying away former peat land behind the coastal dunes. The present islands are a remnant of the former coastal dunes.
The islands are marked by dunes and wide, sandy beaches towards the North Sea and a low, tidal coast towards the Wadden Sea. The impact of waves and currents, carrying away sediments, is slowly changing the layout of the islands. For example, the islands of Vlieland and Ameland have moved eastwards through the centuries, having lost land on one side and grown on the other.
The Wadden Sea is famous for its rich flora and fauna, especially birds. Hundreds of thousands of waders (shorebirds), ducks, and geese use the area as a migration stopover or wintering site, and it is also rich habitat for gulls and terns. However, biodiversity of Wadden Sea on today is only a fraction of what was seen before exploitation by human; for birds, larger species such as geese,eagles, flamingos, pelicans, and herons were used to be common as well. Some of species that are regionally extinct is available here.
According to J. B. MacKinnon, larger fish including sturgeons, rays,Atlantic salmon, brown trout, and others like lacuna snails and oyster beds and that were once found elsewhere of the regions have disappeared as well, as actual size of Wadden Sea was reduced to about 50% of the original sea, and nutrients from the river of Rhine no longer flows into the sea, resulting in about 90% of all the species historically inhabited Wadden Sea to be at risk.
Wadden Sea hosts important habitat for species of seals such as grey seals. Harbour porpoises and Atlantic white-beaked dolphins (seasonally) once became locally extinct but have re-colonized into the areas, and these two are only cetaceans of residency in present days while many other species either disappeared or visit seasonally or occasionally the waters.North Atlantic right whales and gray whales were once seen in the region, using the shallow, calm waters for either feeding and breeding before they were completely wiped out by shore-based whaling. These two species are now thought to be either extinct or remnant populations that are low-tens at best survive. One whale, possibly a right whale was observed close to beaches on Texel in the West Frisian Islands and off Steenbanken, Schouwen-Duiveland in July 2005. Recent increases in number of North Atlantic humpback whales and minke whales might have resulted in more visits and possible re-colonization by the species to the areas especially around Marsdiep. Future recovery of once-extinct local Bottlenose dolphins is also expected.
There are number of invasive species including algae, plants, and smaller organisms causing negative affects on native species introduced by human activities into North Sea coasts.
Each of three countries has designated Ramsar sites in the region (see Wadden Sea National Parks).
Although the Wadden Sea is not yet listed as a transboundary Ramsar site, a great part of the Wadden Sea is protected in cooperation of all three countries. The governments of the Netherlands, Denmark and Germany have been working together since 1978 on the protection and conservation of the Wadden Sea. Co-operation covers management, monitoring and research, as well as political matters. Furthermore, in 1982, a Joint Declaration on the Protection of the Wadden Sea was agreed upon to co-ordinate activities and measures for the protection of the Wadden Sea. In 1997, a Trilateral Wadden Sea Plan was adopted.
In June 2009, the Wadden Sea (comprising the Dutch Wadden Sea Conservation Area and the German Wadden Sea National Parks of Lower Saxony and Schleswig-Holstein) was placed on the World Heritage list by UNESCO.
Many of the islands have been popular seaside resorts since the 19th century.
Mudflat hiking (Dutch: Wadlopen, German: Wattwandern), i.e., walking on the sandy flats at low tide, has become popular in the Wadden Sea.
It is also a popular region for pleasure boating.
Coordinates: 53°32′N 6°53′E / 53.533°N 6.883°E / 53.533; 6.883
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The boundaries and names shown, and the designations used on this map do not imply official endorsement or acceptance by the United Nations.
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