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A report to Scottish Natural Heritage on European flat oysters, Ostrea edulis, surviving in the Firth of Forth was investigated. No live O. edulis were found, but eight feral Pacific oysters, Crassostrea gigas, were found attached to eulittoral boulders and bedrock.The ages of the Pacific oysters indicated an initial settlement no later than 2007 and at least two subsequent settlements, which may...
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