A wash-over is a natural feature of Wadden Islands. It is a passage in the row of dunes through which the sea can flow during storm surges. A kind of natural 'valve' from the dunes. Seawater then flows across the Boschplaat, from the North Sea to the Wadden Sea and vice versa. The water contains a lot of sand and silt, which is deposited on the salt marsh during the flood. After one storm, several centimetres of silt can remain in some places. In addition, old plant remains are removed and new opportunities are created for salt marsh plants and breeding birds. This natural 'reset' therefore leads to an increase and rejuvenation: in this way, nature itself ensures that the Bosch plate grows with it and is more resistant to climate change and sea level rise.

The Bosch plate in its current form was created by man. When the dynamics in the area came to a standstill, the elevation of the area also stopped. However, sea level rise is faster than rising. The Bosch plate could therefore 'drown' and inundate breeding grounds. To prevent this, we are bringing back the natural dynamics in the area.

The Wadden Islands were created under the influence of the wind, sea and sand. The sea deposits sand on the beach, after which the wind blows the sand further up the island. This is how the dunes are created and, in the lee behind them, the salt marshes. The drifting sand and flooded water also ensure that nature sometimes gets a 'reset': old plant remains wash away and bare sandy patches are created. Thanks to this dynamic, nature reserves are very varied, with many different types of nature.

Coastal growth and coastal erosion always take place at the ends of the Wadden Islands. This natural movement is part of it and ensures that nature continues to rejuvenate. The measures on the Boschplaat make the area higher, but not longer.. Sand supplementation may be able to provide this. We then spray sand off the coast. The natural dynamics under water can also naturally cause growth. On the Wadden side, natural mussel beds are being created that may shelter the salt marsh in the long run, so that it can grow back.

Visitors remain welcome at the Boschplaat. During the breeding season, the Boschplaat is a large nursery. The salt marsh will then remain closed to the public, just like now. However, the path and beach remain accessible. If birds start breeding in new locations outside the current breeding area, we will also protect them from disruption.

The Bosch plate will remain accessible via the beach during the work. However, the path along the Stuifdijk can be temporarily (partially) closed as long as the work lasts.

In the past, Rijkswaterstaat, in consultation with the municipality of Terschelling, has determined that the Boschplaat may turn to pole 26. This is where the Basic Coastline begins: the coastline that must always be maintained. East of pole 26, nature can take its course.

On the Boschplaat, grasses and reeds are increasingly gaining the upper hand. This is at the expense of flowering plants. In the medium-high salt marsh, species such as sea lavender and sea aster are struggling. On the higher parts, cat thorn, parnassia, red pimpernel and graceful fat wall are in danger of disappearing.

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We cannot prevent the release of nitrogen during the work. However, the work on the Bosch plate is carried out as sustainably as possible.

The work mainly takes place in and around the Stuifdijk and the beach. In addition, measures are being taken on the Wadkant to stop coastal erosion around a duck cage. No work is taking place on the various dunes and large parts of the salt marsh. By the way, this does not mean that there will be no changes in these areas; due to the increase in natural dynamics through, for example, the wash-over, nature can also change further on the Bosch plate.

The Bosch plate owes its name to the way in which the area was created. “Bosschen” means “forest up” or “rise up”. The Boschplaat has risen above the sea like an island. Later, this island became attached to Terschelling.