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1

Biomass and abundance of aquatic fungi in a polyhumic dam reservoir

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Pietryczuk A., Gorniak A. S., Wiecko A., Cudowski A.
Polish Journal of Environmental Studies
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2013
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tom 22
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nr 3
The aim of this study was to determine the biomass and abundance of fungi in the waters of the shallow and polyhumic reservoir located in northeastern Poland. It was shown that fungal biomass in water positively correlated with abundance (CFU/ml, colony-forming unit/ml) and negatively with the number of morphotypes. The largest biomass of fungi was recorded in October (0.55 μg/dm³) and the lowest in winter (0.22-0.28 μg/dm³), when fungal colonies had greater phenotypic diversity. The main river supplying the reservoir had greater average fungal biomass and abundance than the reservoir.
2

Fungi biomass in lowland rivers of North-Eastern Poland: effects of habitat conditions and nutrient concentration

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Gorniak A., Wiecko A., Cudowski A.
Polish Journal of Ecology
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2013
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tom 61
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nr 4
Fungi occur in almost all types of waters in the world and play an important role in many processes in the environment, particularly in organic matter decomposition. During the last several decades, extensive knowledge was obtained on the ecology of aquatic fungi, but on fungal biomass in the water column less. The study was aimed at simultaneous determination of seasonal and spatial variability of aquatic fungi biomass in the river waters in relation to selected physicochemical water parameters and trophic state in the 27 lowland rivers of north-eastern Poland with length between 17 and 308 km and mean annual discharge 1 – 100 m³ s⁻¹. The chemical and mycological evaluation was provided on the basis of 64 water samples taken in the July and October 2010. The chromatographic method of determination of seston ergosterol as a specific organic compound typical for the majority of fungi, was applied. Fungi biomass was higher in summer than in autumn. The particulate organic carbon (POC) and dissolved organic carbon (DOC) concentrations had no effect on fungal biomass in the studied river, as well as forest cover of the catchment and river discharge. Statistically significant correlations of fungal biomass in the river water with concentrations of ammonium (N–NH₄⁺), Kjeldahl (NKjel), total organic (TON) and total nitrogen (TN) and dissolved (DP) and dissolved organic phosphorus (DOP) were found. The principal component analysis indicates relations between (TIN) and phosphorus (SRP) and particulate phosphorus (PP) and freshwater fungi, specially in summer when aquatic fungi are able to modify the structure of the nutrients contained in the water column.
3

Nowo opisane stanowiska jezierzy morskiej Najas marina L. (Hydrocharitaceae) w północno-wschodniej Polsce

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Gorniak A., Zielinski P., Wiecko A.
Przegląd Przyrodniczy
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2017
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tom 28
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nr 3
4
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Biomass, abundance and sensitivity to antibiotics and antimycotics of the fungi in the Vistula River with its main tributaries

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Pietryczuk A., Gorniak A. S., Wiecko A., Cudowski A.
Acta Mycologica
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2013
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tom 48
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nr 2
Mycoplankton of Vistula River and its main tributaries biomass as well as the number and morphotype diversity was studied in summer and autumn 2011. Summer mycoplankton biomass was within the range of 0.2 – 0.5 μg/l, while in the autumn it was two times wider range (0.1 – 1.3 μg/l). The number of fungi in river water most often did not exceed 1000 – 2000 CFU/ml. Fungi colonies isolated from rivers water were sensitive to the commonly used amphotericine B (10 μg) and gentamicin (10 μg). It seems to be plausible that aquatic fungi can acquire immunity to drugs as a result of horizontal transfer of a gene responsible for drug resistance or as an effect of antibiotics and antimycotics getting into the aquatic ecosystems from wastewaters.
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