Abstract:
:Effects of effluents from mechanical pulp production on brown trout were studied for 8 weeks at environmentally relevant concentrations. The exposure took place in laboratory-based pools upstream and downstream of the effluent discharge point of an integrated newsprint mill using ground wood/thermomechanical pulp. The mill had no secondary treatment of the wastewater. The pools were supplied with water pumped directly from the river. To determine the relevance of this approach, wild fish were also caught at the respective sites upstream and downstream from the mill. Sublethal effects were assessed using physiological and biochemical parameters including liver histology, hematology, serum biochemistry, and hepatic enzyme assays. Exposure was verified by analyzing water samples, fish bile, and tissues for resin acid concentrations. The downstream experimental fish and captured feral fish displayed responses and changes in physiological parameters similar to those previously observed in laboratory experiments with untreated effluents. The most obvious effects were liver damage and growth inhibition.
journal_name
Ecotoxicol Environ Safjournal_title
Ecotoxicology and environmental safetyauthors
Johnsen K,Tana J,Lehtinen KJ,Stuthridge T,Mattsson K,Hemming J,Carlberg GEdoi
10.1006/eesa.1998.1683subject
Has Abstractpub_date
1998-07-01 00:00:00pages
184-93issue
3eissn
0147-6513issn
1090-2414pii
S0147-6513(98)91683-9journal_volume
40pub_type
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