Lake Michigan Plankton Dynamics: Layers of Layers
The principal objective is to identify characteristics of water chemistry in Lake Michigan that define responses to the onset of summer stratification during warming and stabilization in June-July. Two sets of methods will be employed, one empirical (measurements) and one historical (comparison with previous measurements). Students will join research expeditions on, collect water samples, prepare them for analysis, and conduct analysis of water chemistry. Students will use spectrophotometric wet chemistry for phosphorus, silica, and ammonia; flow injection analysis for carbon dioxide, nitrate and nitrite; and ion chromatography for chloride and sulfate. She will use spreadsheets to enter and calculate the results, and we will discuss them in relation to prior outcomes.