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Brownsea island has built up on a bare [[sand]] and mud bank deposited in the shallow harbour. [[Ecological succession]] has taken place on the island to create topsoil able to support ecosystems. | Brownsea island has built up on a bare [[sand]] and mud bank deposited in the shallow harbour. [[Ecological succession]] has taken place on the island to create topsoil able to support ecosystems. | ||
The nature reserve on the island is leased from the National Trust by [[Dorset Wildlife Trust]] and includes a brackish [[lagoon]] and area of woodland. Other [[ecosystem]]s on the island include [[saltmarsh]], [[reedbed]], two freshwater | The nature reserve on the island is leased from the National Trust by [[Dorset Wildlife Trust]] and includes a brackish [[lagoon]] and area of woodland. Other [[ecosystem]]s on the island include [[saltmarsh]], [[reedbed]], two freshwater lakes, [[alder carr]], [[coniferous woodland]], [[deciduous woodland]] and [[arboretum]]. In the past [[invasive species]] such as [[rhododendrons]], also non-native, were introduced to the island but the trusts have cleared many areas. The entire island is designated a [[Site of Special Scientific Interest]]. | ||
=== Wildlife === | === Wildlife === |