Quantifying spatiotemporal rhythm of stream metabolism along human disturbance gradients

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dc.authorid0000-0002-0156-1657en_US
dc.authorid0000-0003-1099-4363en_US
dc.authorid0000-0002-7035-7078
dc.contributor.authorEryiğit, Miraç
dc.contributor.authorEvrendilek, Fatih
dc.contributor.authorKarakaya, Nusret
dc.date.accessioned2021-06-23T19:54:04Z
dc.date.available2021-06-23T19:54:04Z
dc.date.issued2020
dc.departmentBAİBÜ, Mühendislik Fakültesi, Çevre Mühendisliği Bölümüen_US
dc.description.abstractThis study aimed at investigating the effects of the urban wastewater treatment plant (WTP) discharges on the metabolism of Buyuksu Stream (Bolu, Turkey), and modelling the metabolism components as a function of measured environmental variables. Dissolved oxygen (DO) and water temperatures (T-w) were measured to estimate montly stream metabolism in the four reaches: Before and after discharges of the WTP, and the headwaters of Abant Creek and Mudurnu Creek feeding Buyuksu Stream. The DO andT(w)measurements were performed for 17 months between August 2015 and December 2016. Metabolism components of community respiration (R-c), gross primary production (GPP) and net ecosystem metabolism (NEM) were estimated by using the two-station method. According to naturality gradient (reach disturbance gradients: before and after discharges, and headwaters of the creeks), mean metabolism components were compared by performing the one-way analysis of variance. The comparison results showed that the WTP discharges increased the averageR(c)from -30.6 g O(2)m(-2)day(-1)to -130.9 g O(2)m(-2)day(-1), and had no significant impact on the average GPP, statistically (15.6 and 9.1 g O(2)m(-2)day(-1)before and after discharges, respectively). Validations of the multiple non-linear regression models of NEM andR(c)gave coefficients of determination of 74.9% and 66.6%, respectively. As the first study investigating the effects of WTP discharges on the stream metabolism in Turkey, the results were compared with the previous studies in the literature. The study demonstrated that the WTP discharges increased the mean R(c)from -30.6 g O(2)m(-2)day(-1)to -130.9 g O(2)m(-2)day(-1), and had no significant impact on the mean GPP, statistically (15.6 and 9.1 g O(2)m(-2)day(-1)before and after discharges, respectively). Furthermore, the study aimed at statistical modelling the metabolism rates as a function of measured environmental variables. The multiple non-linear regression models of NEM and R(c)were derived with high validations (R(2)of 74.9% and 66.6%, respectively).en_US
dc.identifier.doi10.1051/limn/2020014
dc.identifier.issn0003-4088
dc.identifier.issn2100-000X
dc.identifier.scopus2-s2.0-85088143921en_US
dc.identifier.scopusqualityQ3en_US
dc.identifier.urihttps://doi.org/10.1051/limn/2020014
dc.identifier.urihttps://hdl.handle.net/20.500.12491/10405
dc.identifier.volume56en_US
dc.identifier.wosWOS:000549811500001en_US
dc.identifier.wosqualityQ4en_US
dc.indekslendigikaynakWeb of Scienceen_US
dc.indekslendigikaynakScopusen_US
dc.institutionauthorEvrendilek, Fatih
dc.institutionauthorEryiğit, Miraç
dc.institutionauthorKarakaya, Nusret
dc.language.isoenen_US
dc.publisherEdp Sciences S Aen_US
dc.relation.ispartofAnnales De Limnologie-International Journal Of Limnologyen_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/closedAccessen_US
dc.subjectStream Metabolismen_US
dc.subjectStream Healthen_US
dc.subjectDiel Oxygen Techniqueen_US
dc.subjectTwo-station Methoden_US
dc.subjectWastewateren_US
dc.titleQuantifying spatiotemporal rhythm of stream metabolism along human disturbance gradientsen_US
dc.typeArticleen_US

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