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Assessing ecotoxicity of biomining effluents in stream ecosystems by in situ invertebrate bioassays: A case study in Talvivaara, Finland.
https://arctichealth.org/en/permalink/ahliterature284211
Source
Environ Toxicol Chem. 2017 Jan;36(1):147-155
Publication Type
Article
Date
Jan-2017
More detail
Author
Johanna Salmelin
Matti T Leppänen
Anna K Karjalainen
Kari-Matti Vuori
Almut Gerhardt
Heikki Hämäläinen
Source
Environ Toxicol Chem. 2017 Jan;36(1):147-155
Date
Jan-2017
Language
English
Publication Type
Article
Keywords
Animals
Behavior, Animal - drug effects
Biological Assay
Ecosystem
Ecotoxicology
Environmental Monitoring - methods
Finland
Insects
Mining
Oligochaeta - drug effects
Rivers - chemistry
Water Pollutants, Chemical - analysis - toxicity
Abstract
Mining of sulfide-rich pyritic ores produces acid mine drainage waters and has induced major ecological problems in aquatic ecosystems worldwide. Biomining utilizes microbes to extract metals from the ore, and it has been suggested as a new sustainable way to produce metals. However, little is known of the potential ecotoxicological effects of biomining. In the present study, biomining impacts were assessed using survival and behavioral responses of aquatic macroinvertebrates at in situ exposures in streams. The authors used an impedance conversion technique to measure quantitatively in situ behavioral responses of larvae of the regionally common mayfly, Heptagenia dalecarlica, to discharges from the Talvivaara mine (Sotkamo, Northern Finland), which uses a biomining technique. Behavioral responses measured in 3 mine-impacted streams were compared with those measured in 3 reference streams. In addition, 3-d survival of the mayfly larvae and the oligochaete Lumbriculus variegatus was measured in the study sites. Biomining impacts on stream water quality included increased concentrations of sulfur, sulfate, and metals, especially manganese, cadmium, zinc, sodium, and calcium. Survival of the invertebrates in the short term was not affected by the mine effluents. In contrast, apparent behavioral changes in mayfly larvae were detected, but these responses were not consistent among sites, which may reflect differing natural water chemistry of the study sites. Environ Toxicol Chem 2017;36:147-155. © 2016 SETAC.
PubMed ID
27253991
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