. Effects of zebra mussels on chlorophyll, nitrogen, phosphorus and silica in north shore waters of Lake Erie. Zebra mussel; Zebra mussel. O z z i 0^ 1 2 3 4 5 6 7 8 9 10 11 12 Month Union PreZM =^scs ^^ z F Z 9 c a o> O ^ CO at 1 1 2 3 4 5 6 7 8 9 10 11 12 Month Union PreZM. 1 2 3 4 5 6 7 8 9 10 11 12 Month E, e a o ai a o = Union PostZM^ Ks^^J-m'^i PreZM 1 2 3 4 5 6 7 8 9 10 11 12 Month Figure. 4. Monthly means + l St. Dev. of chlorophyll and nutrient concentrations during pre- (1984-87) and post (1990-94) zebra mussel time periods in seunples from the
. Effects of zebra mussels on chlorophyll, nitrogen, phosphorus and silica in north shore waters of Lake Erie. Zebra mussel; Zebra mussel. O z z i 0^ 1 2 3 4 5 6 7 8 9 10 11 12 Month Union PreZM =^scs ^^ z F Z 9 c a o> O ^ CO at 1 1 2 3 4 5 6 7 8 9 10 11 12 Month Union PreZM. 1 2 3 4 5 6 7 8 9 10 11 12 Month E, e a o ai a o = Union PostZM^ Ks^^J-m'^i PreZM 1 2 3 4 5 6 7 8 9 10 11 12 Month Figure. 4. Monthly means + l St. Dev. of chlorophyll and nutrient concentrations during pre- (1984-87) and post (1990-94) zebra mussel time periods in seunples from the Dnion water 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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