Biological report - fish mortality, River Conder, 21.7.79
Following a large scale fish mortality caused by a considerable spillage of a pentachlbrophenol-based disinfectant from a mushroom farm, a biological survey of the river Conder was undertaken on 23.7.79. A spillage of this same make of disinfectant from this mushroom farm in February 1976 caused a similar large scale fish mortality.On that occasion, the pollution appeared to have little effect on the benthic invertebrates of the river Conder, with no dead organisms found, although the smallbeck which received the spillage was quite badly affected. This recent spillage of disinfectant involved a considerably greater volume (approximately 900gallons) than the 1976 discharge and so this report looks at whether invertebrate fauna of the main river were affected on this occasion. Kick samples were taken at a number of sites in the river Conder from the confluence with the polluted beck to Conder Green. A control sample was also taken upstream of the confluence with the polluted beck. All samples were examined on site and live and dead invertebrates noted and identified as accurately as possible.
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| Format: | monograph biblioteca |
| Language: | English |
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North West Water Authority Rivers Division
1979
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| Subjects: | Fisheries, Limnology, Pollution, England, Lune Catchment, Rivers, Freshwater fish, Mortality, Freshwater organisms, Pollution effects, , |
| Online Access: | http://hdl.handle.net/1834/25223 |
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