Seasonal variations of metal concentrations in periphyton and taxonomic composition of the algal community at a Yenisei River littoral site

Анищенко, О. В.; Gladyshev, Michail I.; Kravchuk, Elena S.; Ivanova, E. A.; Gribovskaya, I. V.; Sushchik, Nadezhda N.

doi:10.2478/s11535-009-0060-y

Cited by 11 publications

(10 citation statements)

References 26 publications

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“…We concluded that increasing nutrient concentrations travelling downstream were the main factors causing the changes in the periphyton communities, and this agrees with the results of a study conducted by Kelly [29]. As has been shown previously, seasonal variations in the concentrations of some metals in river periphyton can be related to variations in the periphytic algae and cyanobacteria species present [30]. Therefore, we believe that the changes in the periphytic assemblages we found may have been connected with heavy metal accumulation by the periphyton.…”

Section: Resultssupporting

confidence: 91%

Heavy Metal Accumulation by Periphyton Is Related to Eutrophication in the Hai River Basin, Northern China

2014

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The Hai River Basin (HRB) is one of the most polluted river basins in China. The basin suffers from various types of pollutants including heavy metals and nutrients due to a high population density and rapid economic development in this area. We assessed the relationship between heavy metal accumulation by periphyton playing an important role in fluvial food webs and eutrophication in the HRB. The concentrations of the unicellular diatoms (type A), filamentous algae with diatoms (type B), and filamentous algae (type C) varied along the river, with type A dominating upstream, and types B then C increasing in concentration further downstream, and this was consistent with changes in the trophic status of the river. The mean heavy metal concentrations in the type A, B and C organisms were Cr: 18, 18 and 24 mg/kg, respectively, Ni: 9.2, 10 and 12 mg/kg, respectively, Cu: 8.4, 19 and 29 mg/kg, respectively, and Pb: 11, 9.8 and 7.1 mg/kg respectively. The bioconcentration factors showed that the abilities of the organisms to accumulate Cr, Ni and Pb decreased in the order type A, type B, then type C, but their abilities to accumulate Cu increased in that order. The Ni concentration was a good predictor of Cr, Cu and Pb accumulation by all three periphyton types. Our study shows that heavy metal accumulation by periphyton is associated with eutrophication in the rivers in the HRB.

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Section: Resultssupporting

confidence: 91%

Heavy Metal Accumulation by Periphyton Is Related to Eutrophication in the Hai River Basin, Northern China

2014

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“…Detailed hydroecological descriptions of the study site are given elsewhere (Sushchik et al, 2006;Kolmakov et al, 2008;Anishchenko et al, 2010;Kalachova et al, 2011;Gladyshev et al, 2012a,b). Briefly, dominant species in the epilithon in spring and early summer are green algae in the genus Ulothrix.…”

Section: Study Site and Samplingmentioning

confidence: 99%

“…In summer, the biofilm is mostly composed of diatoms, where several dominant species of the genera Gomphonema, Didymosphaenia, Fragilaria, Aulacoseira and Cymbella replace each other. In the late autumn and winter, cyanobacteria of genera Chamaesiphon, Oscillatoria and Phormidium become dominant (Kolmakov et al, 2008;Anishchenko et al, 2010;Sushchik et al, 2010).…”

Section: Study Site and Samplingmentioning

confidence: 99%

Amino acid composition of epilithic biofilm and benthic animals in a large Siberian river

et al. 2013

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Summary We studied amino acid (AA) composition of epilithic biofilms and zoobenthos near the shore at a middle section of the Yenisei River (Siberia, Russia). We hypothesised that there was an imbalance between the composition and content of amino acids in the biofilm and its consumers, the zoobenthos, as well as between those in the zoobenthos and fish. Based on monthly sampling from 2007 to 2010, there was seasonal variation in AA profiles in the epilithic biofilms, probably caused by the succession of microalgal and cyanobacterial species. Overall, there was an imbalance in the percentage of the essential amino acids (lysine and histidine) between benthic animals and their food (the epilithic biofilm), which suggests that benthic animals may be limited by food quality. Moreover, the zoobenthos had a significantly higher content of AA, relative to carbon, than the biofilm. Based on sampling in 2012, there was an imbalance between the AA profiles of zoobenthos and that of their main consumer, the Siberian grayling (Thymallus arcticus), particularly in the percentages of two essential amino acids, lysine and leucine. In terms of overall content of essential amino acids, the nutritional value to fish of gammarids, which have recently invaded the river, was significantly lower than that of indigenous taxa, trichopteran and chironomid larvae.

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“…The epilithic microalgae at the site are described in details elsewhere [20,21]; to summarize, the microalgal biomass was very high in spring and early summer, reaching ca. 1 000 g m −2 wet weight, at the expense of green algae.…”

Section: Study Sitementioning

confidence: 99%

Water moss as a food item of the zoobenthos in the Yenisei River

Kalachova

Gladyshev²,

Sushchik³

et al. 2011

Open Life Sciences

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Abstract:Bryophytesareabundantinstreamsandareahabitatformanyinvertebrates,buttheircontributiontothedietoffluvialzoobenthos is still debated. To estimate the amount of bryophyte-derived organic matter assimilated by benthic invertebrates, we used a combinationoffattyacidandstableisotopeanalysesduringafour-yearmonthlystudyofalittoralsiteintheYeniseiRiver(Siberia, Russia).Acetylenicacids,whicharehighlyspecificbiomarkersofthewatermossFontinalis antipyretica,werefoundinlipidsof all dominant benthic animals: gammarids, ephemeropterans, chironomids and trichopterans. The dominant zoobenthic species, Eulimnogammarus viridis, had maximum levels of the biomarkers in its biomass during winter, and minimum levels in summer. The zoobenthos in the studied site regularly consume and assimilate bryophyte-derived organic matter as a minor supplemental food.Thisconsumptionincreasesinwinter,whenthemainfoodsourceofthezoobenthos,epilithicbiofilms,areprobablyscarce.©VersitaSp.zo.o.

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Seasonal variations of metal concentrations in periphyton and taxonomic composition of the algal community at a Yenisei River littoral site

Cited by 11 publications

References 26 publications

Heavy Metal Accumulation by Periphyton Is Related to Eutrophication in the Hai River Basin, Northern China

Heavy Metal Accumulation by Periphyton Is Related to Eutrophication in the Hai River Basin, Northern China

Amino acid composition of epilithic biofilm and benthic animals in a large Siberian river

Water moss as a food item of the zoobenthos in the Yenisei River

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