Arne SSSI and RSPB reserve

 nature reserve, draw only border, Site of Special Scientific Interest - SSSI (UK), RSPB - Royal Society for the Protection of Birds - UK, bird reserve

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Arne RSPB reserve is a 563.4-hectare (1,392-acre) nature reserve and Site of Special Scientific Interest (SSSI) maintained by the RSPB and located in Dorset. It was notified as an SSSI in 1986. The reserve occupies the Arne Peninsula, which protrudes into Poole Harbour. Adjacent to the site is the village of Arne, although the nearest major settlement is the town of Wareham.

The reserve opened in 1966 and is chiefly lowland heath, noted for the rare heather known as Dorset heath (Erica ciliaris), and for its breeding Dartford warblers. It also has acid grassland, salt marsh and woodland, with reedbeds adjoining the mudflats of the harbour. Other important species include nightjar, woodlark and, on the mudflats, spoonbill.