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dc.contributor.authorTan, Xiang
dc.contributor.authorZhang, Quanfa
dc.contributor.authorBurford, Michele A
dc.contributor.authorSheldon, Fran
dc.contributor.authorBunn, Stuart E
dc.date.accessioned2017-08-31T12:30:46Z
dc.date.available2017-08-31T12:30:46Z
dc.date.issued2017
dc.identifier.issn1664-302X
dc.identifier.doi10.3389/fmicb.2017.00601
dc.identifier.urihttp://hdl.handle.net/10072/342459
dc.description.abstractBenthic diatoms have been universally used as indicators to assess water quality in lotic ecosystems. However, most diatom-based indices developed in Europe have not been widely used or tested in other continents such as Asia or Oceania. This study compared the performance of 14 widely-applied diatom indices in assessing ecological conditions in subtropical streams in South East Queensland (SEQ) in Australia and in the upper Han River in China. Most water quality variables in the upper Han River including dissolved organic carbon (DOC), total nitrogen (TN), and soluble reactive phosphorus (SRP) had strong relationships with at least one diatom index, with the exception of IDAP (Index Diatom Artois-Picardie), and TDI (Trophic Diatom Index). However, in SEQ, most of the environmental variables including DOC, ammonia nitrogen (NH4-N), TN, SRP, and electrical conductivity (EC) showed no significant relationships with diatom indices, and the DI-CH (Swiss Diatom Index) and WAT (Watanabe's Index) were unrelated to any of the variables examined. Only pH and nitrite or nitrate nitrogen (NOX-N) were significant predictors of several diatom indices in SEQ, especially TID (Rott trophic index). In the upper Han River, much of the spatial variation in most diatom indices was explained by proximate determinants alone, including EC, DOC, dissolved oxygen (DO) or SRP, or a combination of ultimate (canopy, forest) and proximate factors (R2 in most models> 0.75). Most diatom indices performed as predicted in the upper Han River where nutrient and organic matter pollution was relatively high, and variation in pH low. However, the indices performed poorly in SEQ where the water quality gradient was low and instead most responded to spatial variation in pH. This finding serves as a caution to the application of diatom indices in river basins that fall outside of the range of water quality values of the systems in which they originally developed.
dc.description.peerreviewedYes
dc.languageEnglish
dc.publisherFrontiers Research Foundation
dc.relation.ispartofpagefrom601-1
dc.relation.ispartofpageto601-10
dc.relation.ispartofjournalFrontiers in Microbiology
dc.relation.ispartofvolume8
dc.subject.fieldofresearchMicrobiology not elsewhere classified
dc.subject.fieldofresearchEnvironmental Science and Management
dc.subject.fieldofresearchSoil Sciences
dc.subject.fieldofresearchMicrobiology
dc.subject.fieldofresearchcode060599
dc.subject.fieldofresearchcode0502
dc.subject.fieldofresearchcode0503
dc.subject.fieldofresearchcode0605
dc.titleBenthic diatom based indices for water quality assessment in two subtropical streams
dc.typeJournal article
dc.type.descriptionC1 - Articles
dc.type.codeC - Journal Articles
dcterms.licensehttp://creativecommons.org/licenses/by/4.0/
dc.description.versionPublished
gro.facultyGriffith Sciences, Griffith School of Environment
gro.rights.copyright© 2017 Tan, Zhang, Burford, Sheldon and Bunn. This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) or licensor are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.
gro.hasfulltextFull Text
gro.griffith.authorBunn, Stuart E.
gro.griffith.authorSheldon, Fran
gro.griffith.authorBurford, Michele A.
gro.griffith.authorTan, Xiang
gro.griffith.authorZhang, Quanfa


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