Sentences with phrase «mimic lake ecosystems»

Using 1,200 - liter tanks outfitted to mimic lake ecosystems, researchers exposed Daphnia to five levels of road salt (sodium chloride) ranging from a relatively low concentration of 15 milligrams chloride per liter (the current Lake George concentration) to a high concentration of 1,000 milligrams per liter (mimicking highly contaminated lakes in North America).