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US NMFS finalises 5th salmon BiOp

The US National Marine Fisheries Service (NMFS) has finalised its fifth biological opinion (BiOp) on the risks of pesticides to endangered salmon in four western states. It concludes that the herbicides, oryzalin, pendimethalin and trifluralin, are “likely to jeopardise” approximately half of the 28 listed salmon populations and their habitats. The EPA criticised several elements of the NMFS draft BiOp, noting that it could find no relationship between the target concentrations to be achieved and the suggested buffer zones ( Agrow No 640, p 13). The limits and buffer zones have been retained in the final BiOp. There is a one-year timeframe for implementation. The EPA says that it will consider the opinion and take appropriate steps to protect endangered salmon.


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