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vol. 13, nr. 1 (2009)
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Activity of alkaline phosphatase in rivers located in agricultural areas on the back-ground of selected physicochemical indexes of water quality
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Hanna Siwek
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Department of General Chemistry, Agricultural University of Szczecin ul. Słowackiego 17, 71-434 Szczecin |
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vol. 13 (2009), nr. 1,
pp. 237-244
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abstract:
Rapid acceleration of eutrophication can be observed not only in limnic waters but also in streams and rivers. Water of selected rivers located in agricultural area of Western Pomerania was analysed, with samples taken monthly from April to October, 2006. Each sample was analysed for the temperature, total nitrogen, total phosphorus, soluble reactive phosphorus, chlorophyll_a and activity of alkaline phosphatase (APA). Compounds which limit the growth of phytoplankton were assayed using the ratio of total nitrogen to total phosphorus. The biggest APA and contents of the nutrients was observed in the spring. For the season, positive correlation was calculated between the contents of nutrients and APA.
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keywords:
activity of alkaline phosphatase, eutrophication, phosphorus, rivers
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original in:
Polish
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