. Effects of zebra mussels on chlorophyll, nitrogen, phosphorus and silica in north shore waters of Lake Erie. Zebra mussel; Zebra mussel. -100 -50 Percentage Change 0 50 100 150 200. /FRP TKN Ammonium Nttrats Nitrite* Org N/lnoro N NH4/(N03+NO^ Organic N Inorganic N N/P Winter. 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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