Water Quality in the Central Reach of the Ina River (Western Pomerania, Poland)
Arkadiusz Nędzarek, Małgorzata Bonisławska, Agnieszka Tórz, Anna Gajek, Marlena Socha, Filip Bronisław Harasimiuk
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Department of Water Sozology, West Pomeranian University of Technology in Szczecin,
K. Królewicza 4, 71-550 Szczecin, Poland
Submission date: 2014-04-23
Final revision date: 2014-05-26
Acceptance date: 2014-07-08
Publication date: 2015-02-06
Pol. J. Environ. Stud. 2015;24(1):207–214
Our paper presents a study on the middle reaches of the Ina River. Select physical and chemical indicators were analyzed in order to evaluate water quality. It was determined that the studied river was subjected to strong anthropopressure, and factors declassifying river water included CODCr, TP, general hardness, and alcalinity. A high level of biogenic elements was additionally increased by pollution discharged to the river in the proximity of a factory specializing in agricultural production and processing food and agricultural produce near the town of Stargard Szczeciński. The process of self-purification was noted, which can be considered as a factor modifying changes and dynamics of nitrogen and phosphorus in the studied river, leading to an internal enrichment with biogenic elements. Those processes were multi-directional as confirmed by PCA analysis, where component 1 accounted for just 36.7% of the total variance, and the total variance exceeding 90.0% was only noted for 7 components.