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The marine molluscs of Portland harbour, Dorset
Seaward, D.R. (1987). The marine molluscs of Portland harbour, Dorset. Dorset Proceedings 108: 159-167
In: Proceedings of the Dorset Natural History and Archaeological Society. Dorset Natural History and Archaeological Society: Dorchester. ISSN 0070-7112, more
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  • Seaward, D.R.

    Portland Harbour is under increasing recreational and developmental pressure and this paper is intended to place on record at least one aspect of its high marine biological importance. The shores and sublittoral are described, the present knowledge of its molluscan fauna is stated, and its 140 years of mollusc recording is summarised in relation to the history of enclosure of Portland Roads. The sandflats at Smallmouth and Sandfoot are the only undisturbed sediment shores between Studland and Exmouth; they are particularly important for their unusually rich and diverse bivalve community, for several species normally sublittoral, and for a colony of a rare and local sea slug. The double low tide phenomenon is mentioned.

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