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dc.contributor.authorZhao, B
dc.contributor.authorLi, X
dc.contributor.authorWang, Y
dc.contributor.authorTan, X
dc.contributor.authorQi, W
dc.contributor.authorLi, H
dc.contributor.authorWei, J
dc.contributor.authorYou, Y
dc.contributor.authorShi, W
dc.contributor.authorZhang, Q
dc.date.accessioned2021-10-18T03:55:25Z
dc.date.available2021-10-18T03:55:25Z
dc.date.issued2021
dc.identifier.issn0944-1344
dc.identifier.doi10.1007/s11356-021-15197-3
dc.identifier.urihttp://hdl.handle.net/10072/409177
dc.description.abstractDissimilatory nitrate reduction processes, including denitrification, anaerobic ammonium oxidation (anammox), and dissimilatory nitrate reduction to ammonium (DNRA), are important pathways of nitrate transformation in the aquatic environments. In this study, we investigated potential rates of denitrification, anammox, and DNRA in the sediments of two subtropical rivers, Jinshui River and Qi River, with different intensities of human activities in their respective catchment, China. Our objectives were to assess the seasonality of dissimilatory nitrate reduction rates, quantify their respective contributions to nitrate reduction, and reveal the relationship between dissimilatory nitrate reduction rates, functional gene abundances, and physicochemicals in the river ecosystems. Our results showed higher rates of denitrification and anammox in the intensively disturbed areas in autumn and spring, and higher potential DNRA in the slightly disturbed areas in summer. Generally, denitrification, anammox, and DNRA were higher in summer, autumn, and spring, respectively. Relative contributions of nitrate reduction from denitrification, anammox, and DNRA were quite different in different seasons. Dissimilatory nitrate reduction rates and gene abundances correlated significantly with water temperature, dissolved organic carbon (DOC), sediment total organic carbon (SOC), NO3-, NH4+, DOC/NO3-, iron ions, and sulfide. Understanding dissimilatory nitrate reduction is essential for restoring nitrate reduction capacity and improving and sustaining ecohealth of the river ecosystems.
dc.description.peerreviewedYes
dc.languageen
dc.publisherSpringer Science and Business Media LLC
dc.relation.ispartofjournalEnvironmental Science and Pollution Research
dc.subject.fieldofresearchMarine and estuarine ecology (incl. marine ichthyology)
dc.subject.fieldofresearchcode310305
dc.titleDissimilatory nitrate reduction and functional genes in two subtropical rivers, China
dc.typeJournal article
dc.type.descriptionC1 - Articles
dcterms.bibliographicCitationZhao, B; Li, X; Wang, Y; Tan, X; Qi, W; Li, H; Wei, J; You, Y; Shi, W; Zhang, Q, Dissimilatory nitrate reduction and functional genes in two subtropical rivers, China, Environmental Science and Pollution Research, 2021
dc.date.updated2021-10-14T01:20:43Z
gro.description.notepublicThis publication has been entered in Griffith Research Online as an advanced online version.
gro.hasfulltextNo Full Text
gro.griffith.authorTan, Xiang
gro.griffith.authorZhang, Quanfa


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