. 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. 1 2 3 4 5 6 7 8 9 10 11 12 Month Figure. 8. Monthly means 4^ 1 St. Dev. of chlorophyll and nutrient concentrations during pre- (1984-87) and post (1990-94) zebra mussel time periods in samples from the Rosehill water intake. 10. 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 resemb
. 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. 1 2 3 4 5 6 7 8 9 10 11 12 Month Figure. 8. Monthly means 4^ 1 St. Dev. of chlorophyll and nutrient concentrations during pre- (1984-87) and post (1990-94) zebra mussel time periods in samples from the Rosehill water intake. 10. 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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