. Effects of zebra mussels on chlorophyll, nitrogen, phosphorus and silica in north shore waters of Lake Erie. Zebra mussel; Zebra mussel. 1 2 3 4 5 6 7 8 9 10 11 12 Month 80 -Rosehill 60 â 40 - 20 .PostZM 5-<L Pre-JM 1 1 2 3 4 5 6 7 8 9 10 11 12 Month 70 ^â -Blenheim 60 i J. 1 2 3 4 5 6 7 8 9 10 11 12 Month 80 60 40 - 20 Dunnville k PostZM 'M y ,/^-^H-2-L; 5-^-5. Pre Z^' 1 2 3 4 5 6 7 8 9 10 11 12 Month Figure. 9. Monthly means + 1 St. Dev. of total N- to-total P ratios at the five Lake Erie intake locations during pre- (1984-87) and post (1990- 94) zebra mussel time periods. 11. Please no
. Effects of zebra mussels on chlorophyll, nitrogen, phosphorus and silica in north shore waters of Lake Erie. Zebra mussel; Zebra mussel. 1 2 3 4 5 6 7 8 9 10 11 12 Month 80 -Rosehill 60 â 40 - 20 .PostZM 5-<L Pre-JM 1 1 2 3 4 5 6 7 8 9 10 11 12 Month 70 ^â -Blenheim 60 i J. 1 2 3 4 5 6 7 8 9 10 11 12 Month 80 60 40 - 20 Dunnville k PostZM 'M y ,/^-^H-2-L; 5-^-5. Pre Z^' 1 2 3 4 5 6 7 8 9 10 11 12 Month Figure. 9. Monthly means + 1 St. Dev. of total N- to-total P ratios at the five Lake Erie intake locations during pre- (1984-87) and post (1990- 94) zebra mussel time periods. 11. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Ontario. Ministry of Environment and Energy. [Toronto] : Ontario Ministry of Environment and Energy
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