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Amrum

An island under threat

Sea levels are predicted to rise, mainly due to climate change. This case study considers the impact on the island of Amrum in the North Sea, part of a World Heritage site because of its rich flora and fauna. How might its biodiversity and population be impacted by rising sea levels? You should read this if you are studying the impacts of global warming, coasts, or ecosystems and biodiversity

Amrum is one of three German Frisian Islands in the North Sea (Figure 1). It has an area of 20.4 km2 and a population of 2,300. The core of the island is a moraine from the last Ice Age. The main beach is the Kniepsand (up to 1,500 m wide), but it is geologically not part of Amrum, as it is a sand bank which has gradually moved towards the island (Figure 2).

The island, with its unique biodiversity of flora and fauna, provides a perfect location for family holidays and for ecotourism. The topography includes sand dunes, forest, tidal zone, moorland and marshland. The island’s marine environment can be divided into a sheltered (lee) east side, where the Waddensea’s ecosystems determine flora and fauna, and the west or storm side, influenced by the open sea. The Odde National Park, at the northern end of the island (Figure 2), offers a habitat for rare birds.

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