The effects of acidity and aluminium leached from acidsulphate soils on riverine fish assemblages
Drainage of acid-sulphate soils mainly for agriculture, increases oxidation and leads to extensive leaching of acidity and aluminium (Al) to rivers in western Finland. The lowest average pH (4.55) values and the highest average Al concentrations (7.4 mg l–1) were measuredin the Vöyrinjoki, which app...
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ftluke:oai:jukuri.luke.fi:10024/540597 2023-10-09T21:50:23+02:00 The effects of acidity and aluminium leached from acidsulphate soils on riverine fish assemblages Sutela, Tapio Vehanen, Teppo Luke / Luonnonvarat ja biotuotanto / Ekosysteemit ja ekologia / Vaelluskalojen ekologia (4100100314) 4100100314 Verkkojulkaisu 385-391 false http://jukuri.luke.fi/handle/10024/540597 http://www.borenv.net/BER/ber221-6.htm eng eng Boreal Environment Research Publishing Board fi Boreal Environment Research 22 http://jukuri.luke.fi/handle/10024/540597 1797-2469 http://www.borenv.net/BER/ber221-6.htm fi=A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä|sv=A1 Originalartikel i en vetenskaplig tidskrift|en=A1 Journal article (refereed), original research| ftluke 2023-09-12T20:26:23Z Drainage of acid-sulphate soils mainly for agriculture, increases oxidation and leads to extensive leaching of acidity and aluminium (Al) to rivers in western Finland. The lowest average pH (4.55) values and the highest average Al concentrations (7.4 mg l–1) were measuredin the Vöyrinjoki, which appeared to be void of fish. Frequency of sites with no fish was clearly the highest (59%) in rivers with average pH < 5. Total fish density and biomass were the highest at the sites with pH > 6. The two fish species that are most tolerant to acidity, pike (Esox lucius) and perch (Perca fluviatilis), were found in rivers with an average pH as low as 4.6. Acid-sensitive species, especially grayling (Thymallus thymallus), brown trout (Salmo trutta) and minnow (Phoxinus phoxinus), were usually not found in rivers with average water pH < 6. To mitigate acidification of river waters, controlled farmland drainage techniques should be applied. 2017 Article in Journal/Newspaper Boreal Environment Research Natural Resources Institute Finland: Jukuri |
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Natural Resources Institute Finland: Jukuri |
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ftluke |
language |
English |
description |
Drainage of acid-sulphate soils mainly for agriculture, increases oxidation and leads to extensive leaching of acidity and aluminium (Al) to rivers in western Finland. The lowest average pH (4.55) values and the highest average Al concentrations (7.4 mg l–1) were measuredin the Vöyrinjoki, which appeared to be void of fish. Frequency of sites with no fish was clearly the highest (59%) in rivers with average pH < 5. Total fish density and biomass were the highest at the sites with pH > 6. The two fish species that are most tolerant to acidity, pike (Esox lucius) and perch (Perca fluviatilis), were found in rivers with an average pH as low as 4.6. Acid-sensitive species, especially grayling (Thymallus thymallus), brown trout (Salmo trutta) and minnow (Phoxinus phoxinus), were usually not found in rivers with average water pH < 6. To mitigate acidification of river waters, controlled farmland drainage techniques should be applied. 2017 |
author2 |
Luke / Luonnonvarat ja biotuotanto / Ekosysteemit ja ekologia / Vaelluskalojen ekologia (4100100314) 4100100314 |
format |
Article in Journal/Newspaper |
author |
Sutela, Tapio Vehanen, Teppo |
spellingShingle |
Sutela, Tapio Vehanen, Teppo The effects of acidity and aluminium leached from acidsulphate soils on riverine fish assemblages |
author_facet |
Sutela, Tapio Vehanen, Teppo |
author_sort |
Sutela, Tapio |
title |
The effects of acidity and aluminium leached from acidsulphate soils on riverine fish assemblages |
title_short |
The effects of acidity and aluminium leached from acidsulphate soils on riverine fish assemblages |
title_full |
The effects of acidity and aluminium leached from acidsulphate soils on riverine fish assemblages |
title_fullStr |
The effects of acidity and aluminium leached from acidsulphate soils on riverine fish assemblages |
title_full_unstemmed |
The effects of acidity and aluminium leached from acidsulphate soils on riverine fish assemblages |
title_sort |
effects of acidity and aluminium leached from acidsulphate soils on riverine fish assemblages |
publisher |
Boreal Environment Research Publishing Board |
url |
http://jukuri.luke.fi/handle/10024/540597 http://www.borenv.net/BER/ber221-6.htm |
genre |
Boreal Environment Research |
genre_facet |
Boreal Environment Research |
op_relation |
Boreal Environment Research 22 http://jukuri.luke.fi/handle/10024/540597 1797-2469 http://www.borenv.net/BER/ber221-6.htm |
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1779313438619598848 |