Summary
The floristic composition of the Rivers Tees and Skerne in 1963–1966 was compared in detail with that recorded by a previous worker in 1929–1933. In spite of the long time interval during which considerable changes have taken place in the rivers there was only one marked change in the flora. This is the apparent invasion of Enteromorpha intestinalis. Other changes were very few and did not involve common species.
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References
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Whitton, B.A., Dalpra, M. Floristic changes in the River Tees. Hydrobiologia 32, 545–550 (1968). https://doi.org/10.1007/BF00155407
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DOI: https://doi.org/10.1007/BF00155407