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Water quality and water availability variations in an upland Galloway loch with special reference to dissolved organic matter and the distribution of benthic diatoms

Flower, RJ; Yang, H; (2008) Water quality and water availability variations in an upland Galloway loch with special reference to dissolved organic matter and the distribution of benthic diatoms. (ECRC Research Report 123 ). UCL Environmental Change Research Centre: London, UK. Green open access

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Abstract

Upland waters in acid sensitive regions of Scotland are vulnerable to several disturbance processes that most importantly include atmospheric pollution and climate change as well as to local land use. Monitoring in the Round Loch of Glenhead (RLGH) since 1988 has shown that both water acidity and sulphate concentration have declined while the concentration of dissolved organic matter (DOM) has steadily increased. Currently, it is unclear if increasing DOM reflects climate change effects or relief from acid pollution. This report concerns recent research at the RLGH on relating seasonal changes in water supply and coloured dissolved organic matter (cDOM) to the distributions of benthic algae (diatoms). Diatoms are primarily limited by light which in turn varies according to season, water depth and water transparency. cDOM in lake water strongly influences water transparency and our central hypothesis is that benthic diatom distributions are influenced by changes in cDOM concentrations and light availability.

Type: Report
Title: Water quality and water availability variations in an upland Galloway loch with special reference to dissolved organic matter and the distribution of benthic diatoms
Open access status: An open access version is available from UCL Discovery
Publisher version: https://www.geog.ucl.ac.uk/research/research-centr...
Language: English
UCL classification: UCL
UCL > Provost and Vice Provost Offices
UCL > Provost and Vice Provost Offices > UCL SLASH
UCL > Provost and Vice Provost Offices > UCL SLASH > Faculty of S&HS
UCL > Provost and Vice Provost Offices > UCL SLASH > Faculty of S&HS > Dept of Geography
URI: https://discovery.ucl.ac.uk/id/eprint/10112969
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