River contamination by paper mill effluents
The Pigeon River study.
Temporal (recovery) responses.
|From 1988 to 2000 the levels of dioxin decreased in three species of fish sampled from the Pigeon River at PRK 27, which is 75km downstream of the paper mill.|
|Activity of a MFO detoxification enzyme (EROD) in male sunfish from the pigeon River which reflects reduced contaminant loading in the river from 1990 to 2001.|
change in the size distribution of sunfish at reference and contaminated
(Pigeon River) sites showing the gradual appearance of smaller fish in the Pigeon River as contaminant levels have decreased.
|Under reduced contaminant stress, redbreast sunfish appear to be allocating increased (assimilated) energy to growth and less to lipid storage.|
|The Index of Biotic Integrity (IBI) from the fish communities at a reference site and the Pigeon River, illustrating improvement in the IBI over time in the Pigeon River following remediation activities at the upstream paper mill.|
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