Limnology
Station-average Nutrient Maps
This summary will present an overview of results for the annual
Great Lakes limnology program beginning with 1990 (in 1994 and 1995
only Lake Michigan was
sampled). The limnology program provides information on key environmental factors
such as nutrients that influence
the food chain and fish of the Great Lakes. The sampling strategy is to collect water samples at specific
water depths from a limited number of stations in each lake twice (Spring
and Summer) every
year. The Spring results are presented here as maps showing the average
concentration at each station as represented by circles of
proportionate
size.
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