This week the Duluth team collected peepers from the mesocosms and extracted the water from the wells to test sulfate and iron concentration along with the pH. The data was taken to the lab where we checked the absorbance of the iron and sulfate and calculated how much sulfate needs to be added to the mesocosms.

To the left is the team collecting the water from the wells of the peeper to test sulfate and iron concentrations. The middle picture is the peeper with four wells. Each well had porewater that needed to be tested. The right picture is the mesocosm which holds a controlled system for the wild rice plants.