Developing a regional diatom index for assessment and monitoring of freshwater streams in sub-tropical Australia

Oeding, Sue; Taffs, Kathryn H

doi:10.1016/j.ecolind.2017.05.009

Cited by 37 publications

(21 citation statements)

References 46 publications

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“…ovalis, G. parvulum, N. cryptocephala) were also reported in other ecoregions (Van Dam et al, 1994;Sakai et al, 2013;Oeding and Taffs, 2017;Vasiljevic et al, 2017;Tornés et al, 2018). Of common species, A. ovalis commonly occurs in different kinds of freshwater bodies and has wide tolerance levels to environmental factors (Oeding and Taffs, 2017;Toudjani et al, 2017;Vasiljevic et al, 2017;Tornés et al, 2018). The presence of A. ovalis in slow-flowing rivers herein strengthened the suggestion of Levkov (2009).…”

Section: Discussionsupporting

confidence: 82%

“…The presence of A. ovalis in slow-flowing rivers herein strengthened the suggestion of Levkov (2009). Gomphonema parvulum is a widely distributed species throughout the world, including the surface waters of Italy (Dell'Uomo, 2004), mountain rivers of the Segre basin of Catalonia (Goma et al, 2005), a karstic limnocrene spring of Turkey (Çelekli and Külköylüoğlu, 2007), running waters of the United Kingdom (Kelly et al, 2008), subtropical temperate Brazilian aquatic ecosystems (Lobo et al, 2010), the Eastern Highlands of Zimbabwe (Bere, 2016), the western Mediterranean river basin of Turkey (Toudjani et al, 2017), the Richmond River Catchment of Australia (Oeding and Taffs, 2017), and the Mediterranean streams tributaries from the lower part of the Ebro River in Spain (Tornés et al, 2018). This wide distribution could be due to strong resistance to environmental factors (Delgado et al, 2012;Toudjani et al, 2017), also indicated in the present study by CCA (Figure 2).…”

Section: Discussionmentioning

confidence: 99%

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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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Section: Discussionsupporting

confidence: 82%

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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“…Diatoms are ubiquitous and diverse species of single-celled, eukaryotic, photosynthetic microorganisms [3], and are often the dominant primary producers in marine and freshwater ecosystems [4]. Therefore, diatoms in such ecosystems may be remarkably dissimilar either in phylogenetic composition or biogeographic distribution [5, 6]. Freshwater bodies typically consist of lentic (particularly lakes and wetlands) and lotic waters (including streams and rivers), which are often dominated respectively by planktonic algae and benthic species [7].…”

Section: Introductionmentioning

confidence: 99%

Molecular biogeography of planktonic and benthic diatoms in the Yangtze River

et al. 2019

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BackgroundDiatoms are of great significance to primary productivity in oceans, yet little is known about their biogeographic distribution in oligotrophic rivers.ResultsWith the help of metabarcoding analysis of 279 samples from the Yangtze River, we provided the first integral biogeographic pattern of planktonic and benthic diatoms over a 6030 km continuum along the world’s third largest river. Our study revealed spatial dissimilarity of diatoms under varying landforms, including plateau, mountain, foothill, basin, foothill-mountain, and plain regions, from the river source to the estuary. Environmental drivers of diatom communities were interpreted in terms of photosynthetically active radiation, temperature, channel slope and nutrients, and human interference. Typical benthic diatoms, such as Pinnularia, Paralia, and Aulacoseira, experienced considerable reduction in relative abundance downstream of the Three Gorges Dam and the Xiluodu Dam, two of the world’s largest dams.ConclusionsOur study revealed that benthic diatoms are of particular significance in characterizing motile guild in riverine environments, which provides insights into diatom biogeography and biogeochemical cycles in large river ecosystems.

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“…Trophic weights of some diatom species according to their sensitivity and tolerance to pollution gradient. TI-Trophic Index (Rott et al, 1999), EPI-D-Eutrophication/Pollution Index (Dell'Uomo, 2004), TDI-Trophic Diatom Index (Kelly et al, 2008), TIT-Trophic Index of Turkey (Çelekli et al, 2019b), TWQI-Trophic Water Quality Index (Lobo et al, 2015), and RRDI-Richmond River Diatom Index (Oeding and Taffs, 2017).…”

Section: Diatom Indicesmentioning

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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Developing a regional diatom index for assessment and monitoring of freshwater streams in sub-tropical Australia

Cited by 37 publications

References 46 publications

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

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

Molecular biogeography of planktonic and benthic diatoms in the Yangtze River

Bioassessment of water quality of surface waters using diatom metrics

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