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case study

Berrow Dunes

Exploring a small-scale ecosystem

In GCSE geography, using one example in different contexts helps to make links between topics and reduces content when it comes to revision. Berrow Dunes can be studied as both a small-scale ecosystem and a coastal defence scheme.

Sand, sea and grasses at Berrow Beach.
Berrow Beach and the dunes closest to the sea
© James Osmond/Alamy Stock Photo

Berrow Dunes is a Site of Special Scientific Interest (SSSI) on the Somerset coastline (see Figure 1). Part of this site was declared a Local Nature Reserve in 1993. The rare environment provided by the dunes contains different coastal habitats that are home to at least 270 species of flowering plants, as well as many insects and birds.

The beach running from Burnham-on-Sea, past Berrow and on to Brean, is almost 10 kilometres long, providing a source of sand for the dunes. Sand is transported by wind through the process of saltation, where sand is deposited in sheltered places behind obstacles or within the dunes themselves. This beach at Berrow is very flat and visitors are able to park on the sand. A fence running along the base of the dunes gives some protection from damage by visitors and the wooden posts surrounding the car park provide fixed points which are used to monitor the distance to the dunes. The beach is popular with dog walkers, horse riders and people wanting to take part in sports or just enjoy the beach.

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Previous

Case study: Earthquake protection in Taiwan

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Improve your grade: Answering exam questions about storm hydrographs

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