Fast repetition rate fluorescence responses of natural phytoplankton communities incubated for 3 days in a mesocosm experiment exposed to crude oil and chemical dispersants, July 2016

Fast repetition rate (FRR) fluorescence offers rapid measurement of photosynthesis in vivo, and is an effective tool for assessing stress responses in phytoplankton exposed to crude oil. Using natural phytoplankton communities collected from the Gulf of Mexico exposed to oil and the chemical dispersant Corexit, we measured fluorescence signals every 12 hours over 3 days using a Fluorescence Induction and Relaxation (FIRe) system.