Symptoms of Water Eutrophication in the Bachmaty Reservoir

Siemieniuk, Anna; Szczykowska, Joanna; Wiater, J.

doi:10.12911/22998993/59354

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“…Results of principal component analysis (PCA); the effect of water retention time (T r ) in the reservoirs on the concentration of organic matter (OM SS ) contained in suspended sediment (SS); source: own study consequently, also the productivity and trophic state of the water reservoir. Phytoplankton growth in water depends, among other things, on the availability of nitrogen and phosphorus in the water [SIEMIENIUK et al 2015]. It is assumed that phosphorus concentrations above 0.02 mg•dm -3 in water and 0.3 mg•dm -3 in the case of nitrogen are sufficient for favourable conditions for excessive phytoplankton growth to occur [JACHNIAK, JAGUŚ 2011;VOLLENWEIDER 1968].…”

Section: Discussionmentioning

confidence: 99%

Journal of Water and Land Development

2022

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The study was carried out in the area of three dam reservoirs: Blizne and Maziarnia (Voivodeship of Podkarpackie) and Nielisz (Voivodeship of Lublin). The main parameter differentiating the reservoirs was the water retention time and the manner of water discharge from the reservoirs. Three test sites were designated in the area of each reservoir: in the river zone of the reservoir, in the central part of the reservoir, and near the reservoir dam. At these sites, the concentrations of suspended sediment in the water and the content of organic matter in it, the concentrations of total phosphorus and total nitrogen, as well as chlorophyll a were monitored. In addition, two control sites were established: on the river upstream of the reservoir and on the river downstream of the dam, respectively. At these points, the concentrations of suspended sediments in the water and their organic matter content were recorded. The obtained results of the study and multivariate analysis of the data showed that morphometric parameters (including water retention time) of reservoirs and the method of water discharge influence water quality in downstream rivers. It was found that by using lower discharge and ensuring a sufficiently long retention time of water in the reservoir, it is possible to effectively limit the negative aspects of hydrotechnical structures' impact on the natural environment.In practice, the observed relationships may constitute an important and missing link in the aspect of minimising undesirable side effects of this type of hydrotechnical objects.

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Section: Discussionmentioning

confidence: 99%

Journal of Water and Land Development

2022

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Symptoms of Water Eutrophication in the Bachmaty Reservoir

Cited by 1 publication

References 5 publications

Journal of Water and Land Development

Journal of Water and Land Development

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