The Influence of Selected Factors on the Distribution of Epilithic Diatoms in a Torrential River the Kamniška Bistrica (Slovenia)

Toman, Mihael J.; Groselj, Ana Marjetka; Zelnik, Igor

doi:10.2478/botcro-2014-0004

Cited by 8 publications

(16 citation statements)

References 25 publications

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“…In this study, most of the species clustered around the temperature. Toman et al (2014) reported that temperature is listed among critical parameters for diatom composition which covers Achnanthidium minutissimum as a dominant species. Similarly, Izagirre and Elosegi (2005) determined that temperature was a parameter which affected diatom composition.…”

Section: Statistical Analyses and Diatom Indexmentioning

confidence: 99%

The Use of Phytobenthos for the Ecological Status Assessment in Upper Sakarya Basin, Turkey

Çetin¹

2019

Appl. Ecol. Env. Res.

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In this study, it was aimed to use diatoms as representatives of phytobenthos for estimating the ecological status in Upper Sakarya Basin. Samples were taken seasonally from ten stations from April 2015 to December 2015. Stations 1, 2, 3, 4, 5, 6 and 7 were selected from rivers, stations 8 and 9 were selected from ponds which form Sakarya Springs. Station 10 was located at the outlet of Cifteler Aquaculture and Research Station. Diatoms were identified, counted and 19 diatom indices were calculated. Moreover, water temperature, dissolved oxygen, pH, electrical conductivity were measured in situ, and total nitrogen, orthophosphate and alkalinity were analysed. Finally, ecological status was estimated by evaluating biological, chemical and hydromorphological status according to Water Framework Directive. In total, 96 diatom species were identified from samples and Achnanthidium minutissimum, Cymbella excisa, Craticula subminuscula and Fragilaria brevistriata were the dominant species. Among diatom indices, IDP index which shows a high correlation with total nitrogen was used for the evaluation of the biological status. As a result, ecological status of the station 2 was estimated as high (class I), the status of stations 1, 4, 7, 8, 9 and 10 was estimated as good (class II), and the status of stations 3, 5, 6 was estimated as moderate (class III).

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Section: Statistical Analyses and Diatom Indexmentioning

confidence: 99%

The Use of Phytobenthos for the Ecological Status Assessment in Upper Sakarya Basin, Turkey

Çetin¹

2019

Appl. Ecol. Env. Res.

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“…Deterioration of water quality has negative effects on river basins, food webs the diversity of communities, and causes the uncontrolled growth of species, which can become a threat to public health [6]. Periphytic diatoms are important mediators of anthropogenic influences, since the diatoms are the most abundant group in the periphyton, especially in spring and autumn [7]. Their sorption capacity and large surface area represent a great potential for the removal of dissolved pollutants from the water.…”

Section: Introductionmentioning

confidence: 99%

Epilithic Diatom Community Shows a Higher Vulnerability of the River Sava to Pollution during the Winter

Zelnik

Sušin

2020

Diversity

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The aim of the research was to investigate the influence of environmental factors on the structure of epilithic diatom communities in the Sava River from the source to the state border 220 km downstream. The river had numerous human influences along its course, such as municipal and industrial wastewater, agriculture, hydroelectric power plants, etc. The main objective of the research was to find out the influence of human pressure on the structure of the epilithic diatom community under winter and summer conditions. Winter and summer samples were taken at nine sites. At each sampling site, a set of abiotic factors was measured and another set of environmental parameters was evaluated. The analyses showed that nitrogen and phosphorus concentrations increased downstream. We identified 118 different species of diatoms. The most common taxa were Achnanthidium minutissimum and A. pyrenaicum. Planktonic species Cyclotella meneghiniana was only found in the samples of the lower part of the Sava, which is unusual for the epilithic community. The composition of the epilithic diatom community was significantly influenced by conductivity and water temperature, pH and distance from the source. The similarity between diatom communities closer to the source of the river was higher than between communities from the lower part of the Sava River. The values of the trophic and saprobic indices increased downstream and showed that the pollution of the river with nutrients and organic matter increases with the distance from the source. Both indices were significantly higher in winter and showed a more impaired river ecosystem during the winter.

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“…Also, considerable taxonomic expertise is required (Ács et al 2004). In addition, pH, conductivity, total phosphorus, temperature, alkalinity, altitude, nitrates, calcium, biological oxygen demand (BOD), chlorophyll a and substrate type are major environmental factors that affect diatom distribution in streams, in addition to light availability, total phosphorus and grazing pressure (Toman et al 2014).…”

Section: Introductionmentioning

confidence: 99%

The Application of Benthic Diatoms in Water Quality Assessment (Mlava River, Serbia)

Jakovljević¹,

Popović²,

Vidaković³

et al. 2016

Acta Botanica Croatica

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Abstract-The main objective of this study was to assess the ecological status of the Mlava River based on epilithic diatoms and to test the use of diatom indices as a tool for estimating the quality of fl owing waters in Serbia. Quantitative analysis showed that in April Achnanthidium minutissimum was dominant at each site, except at the fi fth site, where Amphora pediculus was dominant. In July and September, Achnanthidium minutissimum, Achnanthidium pyrenaicum, Amphora pediculus, Denticula tenuis, Diatoma vulgaris, Gomphonema elegantissimum, Cocconeis pseudolineata and Cocconeis placentula var. lineata dominated. Detrended correspondence analysis (DCA) was used to detect the major patterns of variation in species composition. The fi rst DCA axis summarizes the distribution of the diatom community, mainly through temperature, conductivity, oxygen and water hardness gradient. The second DCA axis was weakly correlated with few variables. Based on the average values of the pollution sensitivity index (IPS), commission for economical community metric (CEE) and biological diatom index (IBD), the water of the Mlava River belonged to water class I during all three seasons. Values of the diatom-based eutrophication/pollution index (EPI-D) indicated class II water quality. According to calculated trophic diatom index (TDI) values, water of the Mlava River was characterized by intermediate nutrient concentrations during three seasons. Principal components analysis was used to represent the correlation between diatom indices, and the highest correlation among the selected diatom indices is seen between EPI-D, IPS and IBD.

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The Influence of Selected Factors on the Distribution of Epilithic Diatoms in a Torrential River the Kamniška Bistrica (Slovenia)

Cited by 8 publications

References 25 publications

The Use of Phytobenthos for the Ecological Status Assessment in Upper Sakarya Basin, Turkey

The Use of Phytobenthos for the Ecological Status Assessment in Upper Sakarya Basin, Turkey

Epilithic Diatom Community Shows a Higher Vulnerability of the River Sava to Pollution during the Winter

The Application of Benthic Diatoms in Water Quality Assessment (Mlava River, Serbia)

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