In addition, some jars have copepods , some have copepods and rotifers to eat phytoplankton. Colleen Hatfield is studying the effects of species combination with many other factors, including nutrient additions. Nutrients cause phytoplankton to grow, as you can see in a close up . The room has a heater and chiller, and keeps the temperature constant. The large banks of lights are on timers and thus are controlling a strict timing of night and day for the experiment.
Next door is the image analysis lab, and the biogeochemistry lab is across the hall.