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Nutrients, pH, and organic matter were determined in water samples collected from the Raba River above Dobczyce Reservoir (meso-eutrophic), from the Dunajec River above Czorsztyn Reservoir (mesotrophic), and Rożnów Reservoir (eutrophic), and in the bottom sediments of the reservoirs. The river waters were alkaline (pH 7.2-9.2). In the Raba River and Dunajec River, the ranges of nutrients and organic matter contents were similar (without significant differences) (in mg dm-3; N-NO3 0.5-2.5, N-NH4 0.2-2.0, N-NO2 0.004-0.040, N-tot 1.1-5.6, PO4 0.02-0.58, P-tot 0.03-1.9, while BOD5 1.6-9.9 mg dm-3 O2, COD 2.1-30.4 mg dm-3 O2). The pH of reservoir sediments was from neutral to slightly alkaline (6.9-7.6). The sediments were mineral and were characterized by a low amount of nutrients (N-tot 0.04-0.36%, P-tot 0.007-0.185%) and organic matter (expressed as LOI 3.0-10.6%, TOC 0.9-3.3%). Nutrient (except P-tot) and organic matter contents in the sediments of three reservoirs were similar (without significant differences) and did not reflect the trophic state of the reservoirs.
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Nutrients, pH, and organic matter were determined in water samples collected from the Raba River above Dobczyce Reservoir (meso-eutrophic), from the Dunajec River above Czorsztyn Reservoir (mesotrophic), and Rożnów Reservoir (eutrophic), and in the bottom sediments of the reservoirs. The river waters were alkaline (pH 7.2-9.2). In the Raba River and Dunajec River, the ranges of nutrients and organic matter contents were similar (without significant differences) (in mg dm-3; N-NO3 0.5-2.5, N-NH4 0.2-2.0, N-NO2 0.004-0.040, N-tot 1.1-5.6, PO4 0.02-0.58, P-tot 0.03-1.9, while BOD5 1.6-9.9 mg dm-3 O2, COD 2.1-30.4 mg dm-3 O2). The pH of reservoir sediments was from neutral to slightly alkaline (6.9-7.6). The sediments were mineral and were characterized by a low amount of nutrients (N-tot 0.04-0.36%, P-tot 0.007-0.185%) and organic matter (expressed as LOI 3.0-10.6%, TOC 0.9-3.3%). Nutrient (except P-tot) and organic matter contents in the sediments of three reservoirs were similar (without significant differences) and did not reflect the trophic state of the reservoirs.

A comparison between the water quality of the main tributaries to three submontane dam reservoirs and the sediment quality in those reservoirs

Oceanological and Hydrobiological Studies

Nutrients, pH, and organic matter were determined in water samples collected from the Raba River above Dobczyce Reservoir (meso-eutrophic), from the Dunajec...

A comparison between the water quality of the main tributaries to three submontane dam reservoirs and the sediment quality in those reservoirs

Published Online: Sep 29, 2010

Page range: 55 - 63

DOI: https://doi.org/10.2478/v10009-010-0037-1

Keywords
rivers, dam reservoirs, sediment, nutrients, organic matter

This content is open access.

A comparison between the water quality of the main tributaries to three submontane dam reservoirs and the sediment quality in those reservoirs

Published Online: Sep 29, 2010

Page range: 55 - 63

DOI: https://doi.org/10.2478/v10009-010-0037-1

Keywordsrivers, dam reservoirs, sediment, nutrients, organic matter

This content is open access.

Keywords
rivers, dam reservoirs, sediment, nutrients, organic matter