Sampling in the dark

Mikala is investigating how water draining high and low-elevation marsh influences metabolism (production and respiration) in estuarine waters. This had us out at 2:30am to catch the maximum ebb tide draining 4 tidal creeks. Navigating Plum Island at night is a trick!
Mikala filled BOD bottles with water from the creeks and placed the bottles in racks in the Rowley River to incubate at 4 light levels.

She then measured the change in oxygen content in each bottle. She will also measure DIC and nutrients.