Juggins, S; (1992) The relationship between epilithic diatom assemblages and water chemistry in Scottish streams. (ECRC Research Paper 6 ). UCL Environmental Change Research Centre: London, UK.

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Abstract

During the late 1970s and early 1980s it became apparent that a large number of lochs and streams draining base-poor catchments in various parts of Scotland had been acidified, and had impoverished fish and invertebrate communities. The Scottish Acid Waters Baseline Study was therefore initiated in 1986 with the aim of surveying the current distribution and extent of acid rivers and streams in Scotland, and to provide a baseline of chemical and biological data against which future changes may be assessed. The survey involved a three-year sampling program of stream-water chemistry, benthic invertebrates and epilithic diatoms. This report presents results from the diatom component of this study, and detailed description of the chemistry and diatom data from the survey sites. In addition to documenting the diatom dataset, this interim report also examines the relationship between the diatom assemblages and environmental factors, and develops a predictive model for the bio-monitoring of stream-water pH. I should like to thank members of the Scottish RPBs for collecting diatom samples and Ross Doughty of the Clyde River Purification Board for collating and transferring water chemistry data. The project was funded by a Department of the Environment grant to Prof. R.W. Battarbee.

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