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The zebra mussel (Dreissena Polymorpha) has been introduced into the Great Lakes and is expected to spread throughout much of North America. Monitoring for veligers is necessary in water treatment plants in order to determine when control strategies should be applied. In this case study, three years (1990, 1991, and 1992) of sampling results from a treatment plant that withdrew water from the Niagara River show that veliger densities varied considerably, with low densities (

Product Details

Edition: Vol. 85 - No. 6 Published: 06/01/1993 Number of Pages: 4File Size: 1 file , 1 MB