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dc.contributor.authorTan, Xiang
dc.contributor.authorLiu, Yan
dc.contributor.authorBurford, Michele A
dc.contributor.authorZhang, Quanfa
dc.description.abstractBenthic diatoms are often included in bioassessment programs of river health as sensitive indicators of nutrient status and pollution. Many diatom‐based indices have been developed and are frequently used to infer conditions in water quality. However, concerns have been raised regarding the robustness of these indices in riverine systems that have natural variability in environmental conditions, including seasonal change of water quality parameters, especially in terms of physical and chemical characteristics of water, which also influence diatom community composition. Here, we used three diatom‐based indices (Diatom‐based eutrophication/pollution index, EPI‐D; Biological Diatom Index, IBD; Watanabe's Index, WAT), which have previously been validated as robust for water quality assessment in China, to explore their response to temporal changes in water quality and diatom community structure in a riverine network over time. Concentrations of total nitrogen (TN), nitrate nitrogen (NO3‐N), total phosphorus (TP), temperature (t), and turbidity in April 2010 were significantly higher than in November 2007. The 141 diatom taxa we found in April 2010 were fewer than the 194 taxa we found in November 2007. On both occasions, the three diatom indices responded to same water quality variables (phosphorus and chloride or nitrogen) as reported in previous studies. Of the three diatom indices tested, EPI‐D provided the most robust measure of natural seasonal changes in water quality and indicated the phosphorus and chloride. Our study confirms that these three diatom indices are effective for evaluating long‐term water quality in large rivers.
dc.relation.ispartofjournalRiver Research and Applications
dc.subject.fieldofresearchEnvironmental management
dc.subject.fieldofresearchEnvironmental engineering
dc.subject.keywordsScience & Technology
dc.subject.keywordsLife Sciences & Biomedicine
dc.subject.keywordsPhysical Sciences
dc.subject.keywordsWater Resources
dc.titleThe performance of diatom indices in assessing temporal changes in water quality in a large lowland river ecosystem
dc.typeJournal article
dc.type.descriptionC1 - Articles
dcterms.bibliographicCitationTan, X; Liu, Y; Burford, MA; Zhang, Q, The performance of diatom indices in assessing temporal changes in water quality in a large lowland river ecosystem, River Research and Applications, 2020
gro.description.notepublicThis publication has been entered as an advanced online version in Griffith Research Online.
gro.hasfulltextNo Full Text
gro.griffith.authorBurford, Michele A.
gro.griffith.authorTan, Xiang
gro.griffith.authorZhang, Quanfa

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