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Response of phytoplankton to heavy pollution of water bodies

Shevchenko Tatyana, Klochenko Peter, Nezbrytska Inna

Oceanological and Hydrobiological Studies

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2020

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Vol. 49, No. 3

267--280

EN

Phytoplankton structure was studied in five ponds (located in the Oleksandriya Nature Park, Ukraine), which significantly differed in the level of their contamination. The concentration of ammonium (NH4+-N) in the studied water bodies was 0.02–74.00 mg l-1, of nitrite (NO2--N) – 0.002–1.750 mg l-1, nitrate (NO3--N) – 0.13–58.00 mg l-1, inorganic compounds of phosphorus (Pinorg) – 0.041–0.160 mg l-1, chloride (Cl–) – 35.4–560.5 mg l-1, whereas the content of organic matter (PO and DO) – 4.4–10.4 and 18.0–81.0 mg O l-1, respectively. It has been found that the response of phytoplankton to heavy pollution consisted in changes in its species richness, taxonomic structure, species composition, quantitative indices, numbers and biomass structure, dimensional structure, pigment index, dominant complex, as well as changes in its ecological spectrum. Individual divisions of algae differed in their response to heavy pollution of water bodies, which was conditioned by the specificity of algae metabolism. Bacillariophyta and Cyanoprokaryota proved to be more sensitive to contamination, whereas Chlorophyta and Euglenophyta – more tolerant. The obtained data can be used to monitor the status of water bodies and their biota and to determine the type and intensity of contamination.

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The influence of environmental factors on phytoplankton variety - a case study of three ponds of Western Poland

Szpakowska Barbara, Świerk Dariusz, Pajchrowska Maria

Ecological Chemistry and Engineering. S

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2020

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Vol. 27, nr 1

83--93

EN

The structure of phytoplankton assemblages in three small water bodies was compared and abiotic factors were described. It indicated considerable differences in the species abundance and biomass of the phytoplankton as well as the chemical composition of water between artificial pond (No. 2) and others. A total of 455 phytoplankton taxa were recorded. All ponds were characterized by greatest species richness of Chlorophyta. The highest biomass was noted in August-September 2015, and it was true for each pond. The CCA models showed dependences between the variables under study and phytoplankton groups. They indicated which environmental variables had the greatest influence on the biomass of phytoplankton in the waterbodies under analysis. The biomass of most of the taxonomic group in the phytoplankton (except Miozoa) depended on the presence of nitrogen not only in form of nitrates but also in the form of mineral nitrogen. The research findings suggest the trend of future studies on the phytoplankton in these ponds. The analysis of its variability should also include the influence of light and the influence of consumers on the food chain in the ecosystem.

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Ecological aspects of selected principal phytoplankton taxa in Lake Piaseczno

Bucka H., Wilk-Woźniak E.

Oceanological and Hydrobiological Studies

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2005

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Vol. 34, No.2

79--94

EN

Lake Piaseczno is a unique basin that was created twenty years ago, as the disused opencast sulfur mine in southern Poland was naturally inundated. Large amounts of sulfur dioxide limited seasonal phytoplankton development while simultaneously reducing the number of species. The chrysophyte Dinobryon divergens was one of the species which did develop intensively during mid summer. Other taxa that were noted often included the dinoflagellates Peridinium and Ceratium and the cyanobacteria Anabaena (early summer). Coccal green algae, diatoms, and euglenophytes were among the other numerous species noted. The hard, saline waters and the high concentration of sulfur hydrogen near the bottom along with the toxic impact of heavy metals create specific conditions that are favorable for some algae species while undesirable to others.