Transactions – Natural History Society of Northumbria, vol: 57,4 (1997)
Studies on the distribution of Fucus Ceranoides L. Phaeophyta, Fucales) in estuaries on the north-east coast of England
Suryono C.A., Hardy F.G.
Abstract
Fucus ceranoides L. was found in the middle and lower estuaries of the Tweed and Wear but was absent from the Tyne estuary. Fucus vesiculosus L. was widespread on the open coast and in the lower estuary in the Tweed, Tyne and Wear. A high percentage cover of F. ceranoides was found in the areas which have low salinity whereas F. vesiculosus was found on the coast as well as in the areas which have lower than marine salinity. In cultures, F. ceranoides was well developed in reduced salinities and the optimum salinity was 10. Tissue damage and decay occurred in cultures at full marine salinities and also at 0. Water from the River Tyne inhibited growth of F. ceranoides although, in small concentrations, it was found to stimulate F. ceranoides to grow faster than in other treatments. The optimum treatment was 75% River Tweed water plus 25% River Tyne water, and the worst was 100% Tyne water.
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