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 o> 10 76 78 80 82 84 86 88 90 92 94 Year Z> 6 m 4 S 2 0 Rosehill (summer) .r.:^\J[ 76 78 80 82 84 86 88 90 92 94 Year 20 ^ 15 10 5 0

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