Water quality in forests small retention reservoirs in southern Poland – case study
Journal Title: Annals of Warsaw University of Life Sciences – SGGW. Land Reclamation - Year 2018, Vol 50, Issue 1
Abstract
This paper provides an analysis of water quality in three newly constructed small water retention reservoirs (Rudziczka, Niemysłowice I and Paciorkowy) located in forested areas of the forest district Prudnik in the Opolskie Province (southern Poland). The main purpose of these reservoirs is not only water retention, but also fl ood safety, fi re protection, recreation and ecology. This paper presents the results of research carried out in December 2014 and May 2015. The assessment of water quality was performed in accordance with the applicable provisions on water quality assessment. Moreover, an assessment of eutrophication of water and of the usability of water in reservoirs is given (an analysis of suitability of water as a fi sh habitat). The research shows that the investigated waters are of quality class I in terms of the values of electrolytic conductivity, nitrates, nitrites, dissolved oxygen CODMn, calcium, magnesium and general hardness. In terms of the temperature (the Rudziczka reservoir), and the content of ammonia and phosphates they were of quality class II. The reaction, BOD5 and sulphates and chlorides content exceeded the threshold values for class II. It was also found that the investigated waters are not eutrophic. Based on the indicators such as reaction, dissolved oxygen, ammonia nitrogen and temperature, the waters in all the reservoirs except for Rudziczka met the quality requirements for habitats of salmonids and cyprinids. The living conditions for fi sh are deteriorated most by the increased levels of BOD5 and of nitrites in the Rudziczka and Paciorkowy reservoirs. The analysis of seasonal fl uctuation in concentrations of water quality indicators in the investigated water bodies showed that in winter the concentrations of indicators were higher for nitrates, phosphates, electrolytic conductivity, calcium and general hardness and lower for temperature, reaction, nitrites, ammonia and dissolved oxygen. While the water in the Paciorkowy reservoir had the worstquality, the surface water in the Rudziczka reservoir had the best quality. The research initiated in small forests water retention reservoirs provides preliminary information on water quality and the importance of investigated reservoirs for increased retention.
Authors and Affiliations
MIROSŁAW WIATKOWSKI, CZESŁAWA ROSIK-DULEWSKA, DARIA NIKEL, URSZULA KARWACZYŃSKA
Keywords
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- EP ID EP593652
- DOI 10.2478/sggw-2018-0001
- Views 109
- Downloads 0
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