Effects of zebra mussels on Effects of zebra mussels on chlorophyll, nitrogen, phosphorus and silica in north shore waters of Lake Erie effectsofzebramu00ontauoft Year: 1997 76 78 80 82 84 86 88 90 92 94 Year 12 76 78 80 82 84 86 88 90 92 94 Year 10 -I 8 6 -I 4 2 Union (spring) â¢A â \\'. \l -. -I -95 76 78 80 82 84 86 88 90 92 94 Year

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