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Hot Water Can Prevent the Spread of Invasive Species
New research, published in Biological Invasions, has found that dunking that equipment after use in hot water for 15 minutes could help prevent the invaders from catching a lift. Researchers placed four species of nonnative plants—curly water thyme, New Zealand pigmyweed, floating pennywort, and parrot’s feather—and three species of nonnative animals—zebra mussels, killer shrimp, and bloody red mysid—in angling nets. They then tested the effectiveness of four treatments on mortality rates: hot water (about 45°C) only, hot water and drying, drying only, and a control group. Hot water baths, they found, were extremely effective in dealing with the unwanted species.
 
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Chemical Treatment Kills Thousands of Fish in Hartwell Lake - About 5,000 fish have died because of algaecides applied to Hartwell Lake in an effort to improve the region’s drinking water. The South Carolina Department of Natural Resources and the state’s public-health agency are investigating the fish kill, which affects the area around the Anderson Joint Regional Water System’s intake on the lake.


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