Determination of trophic weight and indicator values of diatoms in Turkish running  waters for water quality assessment

Çelekli, Abuzer; Toudjani, Assane Anabi; Gümüş, E. Yonca; Kayhan, Seda; Lekesiz, Hacı Ömer; Çetin, Tolga

doi:10.3906/bot-1704-40

Cited by 41 publications

(41 citation statements)

References 22 publications

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“…The TIT (Trophic Index of Turkey) was developed specifically for Turkish rivers [55]. In the present work the TIT index was also calculated, and since there were no significant correlations with environmental parameters and the TIT, it is thought that the index did not work in the watercourses of the Sakarya River basin.…”

Section: Discussionmentioning

confidence: 89%

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Use of Diatoms in Monitoring the Sakarya River Basin, Turkey

Solak

Peszek

Yılmaz

et al. 2020

Water

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The Sakarya River basin is one of the largest basins in Turkey, and encompasses the Kocaeli, Düzce, Sakarya, Bursa, Bilecik, Bolu, Kütahya, Eskişehir, Ankara, Afyon, and Konya provinces. In this study, the water quality status of the basin was investigated using 18 diatom indices, calculated in Omnidia software. For this purpose, a total of 46 stations were surveyed in the rivers and streams of the basin in May 2018. As a result, 41 of 195 diatom taxa were found to be the most frequent (>10% share in assemblage). According to Detrented Correspondence Analysis (DCA), three subgroups were described as the spring section, Ankara and Polatlı section, and lowland section. The river basin quality was evaluated as moderate or lower quality status, while only a few sites had good status. The diatom index scores showed that the Descy’s Index (DES), Pampean Diatom Index (IDP), Artois-Picardie Diatom Index (IDAP), and Specific Pollution Sensitivity Index (IPS) appear best suited to water quality assessment in this area, showing the largest number of significantly important correlation with environmental variables.

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Section: Discussionmentioning

confidence: 89%

“…All the indices were transformed in Omnidia software to range from 0 (or 1) to 20 to be comparable (Table 2). Additionally, the Trophic Index of Turkey (TIT) was calculated for checking its applicability for assessment water quality of studied waters [55]. Table 1.…”

Section: Field and Laboratory Studiesmentioning

confidence: 99%

Use of Diatoms in Monitoring the Sakarya River Basin, Turkey

Solak

Peszek

Yılmaz

et al. 2020

Water

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“…This study suggested that diatom metrics can be effectively used for running water quality assessment. Development of ecoregionally specific diatom metrics is warranted since climate, geology, anthropogenic activities, and land use may affect the preferences of diatom assemblages and their trophic weight (Gomá et al, 2004;Lobo et al, 2004;Soininen, 2007;Çelekli et al, 2019).…”

Section: Discussionmentioning

confidence: 99%

Bioassessing ecological status of surface waters in the Araban-Yavuzeli catchment (Turkey): application of diatom indices

Çelekli¹,

Bilgi²

2019

Turk J Bot

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Within the scope of the European Union Water Framework Directive, diatom assemblages as biological quality components were used to evaluate the ecological status of 12 surface waters in the Araban-Yavuzeli catchment between October 2013 and October 2014. A total of 75 diatom species were identified during the study period. Amphora ovalis, Denticula elegans, Gomphonema parvulum, Gomphonema truncatum, and Navicula cryptocephala were commonly observed. The relationship between diatom assemblages and environmental factors was assessed by canonical correspondence analysis and weighted average regression. Dissolved oxygen, temperature, nitrate, biological oxygen demand, lead, and copper played significant roles in the distribution and composition of diatom assemblages (P < 0.05). The ecological status of the stations in Araban and Yavuzeli was characterized using the trophic index-Turkey (TIT), trophic index (TI), and eutrophication and/or pollution index-diatom (EPI-D) indices. According to the TIT, Ardıl Creek1 had very good ecological conditions and was characterized by the occurrence of pollution-sensitive diatom taxa (e.g., Cymbella affinis, Encyonema silesiacum, Navicula radiosa), indicated by multivariate analyses. The significant positive correlation of the TIT (P < 0.01, r = 0.789) with logPO 4 indicated that TIT may be used as an appropriate diatom metric to assess the ecological status of surface waters in the Araban-Yavuzeli catchment.

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“…After the determination of the reference areas, biological, hydromorphological and physico-chemical quality variables of sampling stations and their typologically related reference areas have to be measured for the bioassessment of ecosystems (Moldoveanu et al, 2017;Charles et al, 2021). And then the Ecological Quality Ratio (EQR) of surface waters can be calculated based on the comparison of the measured metric (observed) in the water bodies with expected metric value in the specific reference area (e.g., EC, 2009;Hering et al, 2010;Lazaridou et al, 2018;Çelekli et al, 2019b). Thus, EQR outcomes as observed/expected metric values.…”

Section: European Water Framework Directivementioning

confidence: 99%

“…Bioindicators in the aquatic ecosystem give crucial responses to pollution gradient, which can provide valuable information about health and the overall ecological status of environments (Rott et al, 1999;Kelly et al, 2008;Birk et al, 2012;Toudjani et al, 2017;Çelekli et al, 2019b). Concerning that, tolerances and sensitivities of bioindicator species have been used to investigate and assess the potential effects of environmental pollutants on living things (Rott et al, 1999;Kelly et al, 2008;Çelekli et al, 2019b;Cozea et al, 2020). The advantage of using bioindicators is the integration of these organisms in the evaluated habitats (Lobo et al, 2016;Cozea et al, 2020).…”

Section: Diatom Assemblages As Bioindicatormentioning

confidence: 99%

Bioassessment of water quality of surface waters using diatom metrics

Çelekli¹,

Lekesiz²,

Yavuzatmaca³

2021

Turk J Bot

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Bioassessment of surface waters is one of the most important approaches to predict the deterioration of ecosystems and achieve environmental sustainability according to the application of the European Water Framework Directive. The present review emphasizes the importance of the bioassessment of freshwater quality especially running waters based on diatom metrics. Nutrient enrichment and hydromorphological alternation driven by human activities are the main factors for the ecological compromise of freshwater ecosystems. Currently, the bioassessment of the ecological condition of inland water bodies is adopted worldwide. Bioassessment is complementary to physico-chemical and hydromorphological data for evaluating the ecological conditions of rivers; however, measuring all the physical and chemical changes is expensive and impractical. Therefore, monitoring biota helps to determine the changes occurring in ecosystems. Thus, diatoms are used as bioindicators to assess environmental conditions of the ecosystems, but their use requires great taxonomic knowledge, otherwise, the results will be biased. Many diatom indices have been developed based on the trophic weight and indicator values of diatoms in different ecoregions in the last decades. This review highlights the importance and advantages of using diatom metrics in the bioassessment of the ecological status of surface waters in the different ecoregions, especially running water. To analyze the complex response of diatom communities to environmental gradients and assess the quality of the ecosystem, multivariate statistical approaches are needed.The challenge here is how to define criteria for classes of water bodies in a biologically meaningful way. For this reason, Biological Condition Gradient is suggested as an appropriate and effective approach to develop trophic criteria based on the relationships between nutrient concentrations and biological indicators of ecological conditions.

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Determination of trophic weight and indicator values of diatoms in Turkish running waters for water quality assessment

Cited by 41 publications

References 22 publications

Use of Diatoms in Monitoring the Sakarya River Basin, Turkey

Use of Diatoms in Monitoring the Sakarya River Basin, Turkey

Bioassessing ecological status of surface waters in the Araban-Yavuzeli catchment (Turkey): application of diatom indices

Bioassessment of water quality of surface waters using diatom metrics

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