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Title: | Influence of a Trout farm on water quality and macrozoobenthos communities of the receiving stream (Trešnjica river, Serbia) | Authors: | Živić, Ivana Marković, Zoran Filipović-Rojka, Zdenka Živić, Miroslav |
Keywords: | Aquaculture;Benthic macroinvertebrates;Hydrochemistry;Impact assessment;Organic pollution | Issue Date: | 1-Dec-2009 | Journal: | International Review of Hydrobiology | Abstract: | Trout farming is constantly increasing and poses a serious threat to water quality of clean highland streams. In the present work, we investigated the influence of the farm with the highest trout production in Serbia on water quality and macrozoobenthos communities of the receiving stream, the Trešnjica River. Our study revealed that changes of water chemistry parameters downstream from the trout farm were moderate and mainly confined to the part of the watercourse closest to the wastewater outlet. Moreover, use of food with 0.8% phosphorus content was sufficient to completely eliminate soluble phosphates from water samples of the Trešnjica River. However, the changes in water chemistry were sufficient to cause significant changes in the macrozoobenthos community. These changes remained statistically significant even 500 m downstream and were lost about 3.5 km from the trout farm wastewater effluent. The trout biomass on the farm is a parameter that adequately defines the magnitude of its impact, above all the intensity of its influence on the zoobenthos community structure. The most informative parameters for estimating that influence were the Baetidae/Ephemeroptera ratio, Margelef's index and the Modified biotic index. © 2009 WILEY-VCH Verlag GmbH & Co. |
URI: | https://biore.bio.bg.ac.rs/handle/123456789/748 | ISSN: | 1434-2944 | DOI: | 10.1002/iroh.200811137 |
Appears in Collections: | Journal Article |
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