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Magdalena Suchora; Agnieszka Szczurowska; Michał Niedźwiecki (2017)
Publisher: Polish Society of Ecological Engineering (PTIE)
Journal: Journal of Ecological Engineering
Languages: English
Types: Article
Subjects: eutrophication, small retention reservoir, trophic state index, phytoplankton, Environmental technology. Sanitary engineering, TD1-1066, Environmental sciences, GE1-350
This paper will focus on determining the trophic status of the two basins of the Niwa Reservoir - Niwa I and Niwa II (Sawin commune, Lubelskie Province, SE Poland) at the sixth year of operation, by using partial TSI indexes – TSI(SD), TSI(TP), TSI(chl-a), as well as qualitative and quantitative structures of phytoplankton. As a supplementary, index TSI(TOC) was employed [Dunalska 2011]. We show that the phytoplankton abundance, as well as TSI(chl-a) and TSI(TP) were relatively low and typical for mesotrophic waters (with the exception of July TSI(TP) values for the Niwa II basin), although the evaluation of trophy based on other partial TSI indexes – TSI(SD), TSI(TOC) pointed to a eutrophic or even a hypertrophic water characteristic. The obtained results were discussed in detail and referenced to other, non-nutrient related trophy factors: morphometric features and geology of the basins, as well as the physicochemical properties of its water.
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