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Benthic diatoms of Mekong River and its tributaries in northern and north-eastern Thailand and their application to water quality monitoring

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Author(s): Sutthawan Suphan

Journal: Maejo International Journal of Science and Technology
ISSN 1905-7873

Volume: 6;
Issue: 01;
Start page: 28;
Date: 2012;
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Keywords: benthic diatoms | water quality | biomonitoring | Mekong River

ABSTRACT
Biomonitoring of benthic diatoms was performed to assess the water quality of Mekong River and its tributaries in northern and north-eastern Thailand. Fourteen sampling sites along the river and its tributaries were investigated. Two hundred and fifty-two species in 53 genera of diatoms were recorded. Each sampling site had distinct water chemistry and other physical variables. Cluster analysis identified 11 groups at 80% similarity. The relationship between diatom community composition and water quality variables was determined by statistical techniques. A number of diatom species were found to be useful as indicators of some physico-chemical properties of water.
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