Abstract
The Pasvik River is one of the largest rivers in the Northern Fennoscandia and constitutes the border between Norway and Russia, with catchment area in Finland, Norway and Russia. Besides being strongly regulated for hydroelectric power production, the river is polluted by the smelter in Nikel and other industrial activities and by domestic sewage from the settlements on both sides of the border. This document discusses the pollution of the river and the ecological responses. The two main areas of concern are heavy metals and eutrophication. Very high content of heavy metals in water, lake sediments, macrophytes and fish was found in Kuetsyarvi. Extensive toxic effects were documented on the fish population in the lake. The toxic effects are less than expected from the concentration of heavy metals, which is due to high calcium content, organic matter and eutrophication. Eutrophication is due to the domestic sewage from settlements within the water catchment. Kuetsyarvi has eutrophic status, the lower parts of the Pasvik River have oligo-mesotrophic status according to phosphorus concentrations, and the composition of the planktonic and benthic communities. Because of increased and stabilized water level from hydroelectric power regulations, increased abundance of macrophytes and zoobenthos in shallow areas also
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Citation Formats
Traaen, T, Moiseenko, T, and Sandimirov, S and others.
Pasvik River Watercourse, Barents Region: Pollution Impacts and Ecological Responses. Investigations in 1993.
Norway: N. p.,
1994.
Web.
Traaen, T, Moiseenko, T, & Sandimirov, S and others.
Pasvik River Watercourse, Barents Region: Pollution Impacts and Ecological Responses. Investigations in 1993.
Norway.
Traaen, T, Moiseenko, T, and Sandimirov, S and others.
1994.
"Pasvik River Watercourse, Barents Region: Pollution Impacts and Ecological Responses. Investigations in 1993."
Norway.
@misc{etde_418259,
title = {Pasvik River Watercourse, Barents Region: Pollution Impacts and Ecological Responses. Investigations in 1993}
author = {Traaen, T, Moiseenko, T, and Sandimirov, S and others}
abstractNote = {The Pasvik River is one of the largest rivers in the Northern Fennoscandia and constitutes the border between Norway and Russia, with catchment area in Finland, Norway and Russia. Besides being strongly regulated for hydroelectric power production, the river is polluted by the smelter in Nikel and other industrial activities and by domestic sewage from the settlements on both sides of the border. This document discusses the pollution of the river and the ecological responses. The two main areas of concern are heavy metals and eutrophication. Very high content of heavy metals in water, lake sediments, macrophytes and fish was found in Kuetsyarvi. Extensive toxic effects were documented on the fish population in the lake. The toxic effects are less than expected from the concentration of heavy metals, which is due to high calcium content, organic matter and eutrophication. Eutrophication is due to the domestic sewage from settlements within the water catchment. Kuetsyarvi has eutrophic status, the lower parts of the Pasvik River have oligo-mesotrophic status according to phosphorus concentrations, and the composition of the planktonic and benthic communities. Because of increased and stabilized water level from hydroelectric power regulations, increased abundance of macrophytes and zoobenthos in shallow areas also have occurred. 77 refs., 32 figs., 28 tabs.}
place = {Norway}
year = {1994}
month = {Dec}
}
title = {Pasvik River Watercourse, Barents Region: Pollution Impacts and Ecological Responses. Investigations in 1993}
author = {Traaen, T, Moiseenko, T, and Sandimirov, S and others}
abstractNote = {The Pasvik River is one of the largest rivers in the Northern Fennoscandia and constitutes the border between Norway and Russia, with catchment area in Finland, Norway and Russia. Besides being strongly regulated for hydroelectric power production, the river is polluted by the smelter in Nikel and other industrial activities and by domestic sewage from the settlements on both sides of the border. This document discusses the pollution of the river and the ecological responses. The two main areas of concern are heavy metals and eutrophication. Very high content of heavy metals in water, lake sediments, macrophytes and fish was found in Kuetsyarvi. Extensive toxic effects were documented on the fish population in the lake. The toxic effects are less than expected from the concentration of heavy metals, which is due to high calcium content, organic matter and eutrophication. Eutrophication is due to the domestic sewage from settlements within the water catchment. Kuetsyarvi has eutrophic status, the lower parts of the Pasvik River have oligo-mesotrophic status according to phosphorus concentrations, and the composition of the planktonic and benthic communities. Because of increased and stabilized water level from hydroelectric power regulations, increased abundance of macrophytes and zoobenthos in shallow areas also have occurred. 77 refs., 32 figs., 28 tabs.}
place = {Norway}
year = {1994}
month = {Dec}
}