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Molecular Monitoring Of Bacterial And Microalgal Biocenoses’ Biodiversity In High Loaded Farming Ponds

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Karło A., Ziembińska-Buczyńska A., Pilarczyk M., Surmacz-Górska J.

Ecological Chemistry and Engineering S

2015

vol. 22

issue 3

425-437

Eutrophication process is a serious problem in water ecosystems. There is a great need to study the relation between the physico-chemical condition of water and the influence of these parameters on the diversity of biological life, especially on changes in the structure of microbiocenoses. The most interesting are bacteria and microalgae, due to the important roles they play in maintaining the balance of the aquatic environment. In this study, biodiversity analysis of eukaryotic microalgae and bacteria in two artificial water ecosystems - fish farming ponds - was performed. Aquaculture was based on IMTA technology, in which every part of the trophic chain plays a significant role in maintaining the balance in the ecosystems. Experimental intensive - extensive systems differed in terms of nutrient loads, ponds were characterized by high loads of organic and inorganic nitrogen and phosphorus. During the experimental period, the physicochemical conditions, quantitative genotypic structure of the two biocenoses being studied and the relation between these factors were monitored and investigated. For the biodiversity analysis, the PCR - DGGE technique was used. The results of preliminary research showed that there is a correlation between nutrient loads, diversity expressed in the Shannon-Wiener Index and the overall condition of experimental systems. Higher loadings of nutrient promote the development of bacteria and microalgae without any influence on the balance in the artificial ecosystem being tested.

Qualitative variability in microbial community of constructed wetlands used for purifying wastewater contaminated with pharmaceutical substances

100%

Nowrotek M., Ziembińska-Buczyńska A., Miksch K.

2015

vol. 62

issue 4

929-934

Pharmaceutical substances and their residues are increasingly present in the environment. Therefore, attempts at their removal are made by using different processes. Increasingly important among these processes are those modeled on natural phenomena which occur in wetland ecosystems, called technical scale constructed wetlands. Microbial degradation is an important process in these constructed wetlands. The biodegradation of chemicals often involves a complex series of biochemical reactions and usually varies with the microorganisms involved. The objectives of this study were to determine the impact of sulfamethoxazole and diclofenac on ammonia oxidizing bacteria and other parameters of wastewater in the microcosm of down-flow constructed wetlands. The Spearman correlation coefficient attained negative values in the case of comparison of the Shannon biodiversity index and the parameters of purified wastewater. This dependence was pronounced. In the case of pharmaceutical substances dosed with wastewater, the Spearman correlation coefficient assumed positive values. The highest value assumed by the Spearman correlation coefficient (0.9) was for the removal of diclofenac and Shannon index values for the planted columns, with a very high relationship. For unplanted columns, this value equaled 0.6. For sulfamethoxazole, the value for planted columns was 0.7, and for unplanted -0.7. The presence of plants did not have an impact on the Shannon biodiversity index.

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1 Acta Biochimica Polonica

1 Ecological Chemistry and Engineering S

2 2015

2 Ziembińska-Buczyńska A.

1 Karło A.

1 Miksch K.

1 Nowrotek M.

1 Pilarczyk M.

1 Surmacz-Górska J.

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Molecular Monitoring Of Bacterial And Microalgal Biocenoses’ Biodiversity In High Loaded Farming Ponds

Qualitative variability in microbial community of constructed wetlands used for purifying wastewater contaminated with pharmaceutical substances