We just started working on a few interesting topics on phytoplankton physiology and biogeochemistry.

Effect of CO2 and variable light on growth, photochemistry, toxin and TEP production of a HAB forming Diatom. This project is in collaboration with Kate Hubbard and Maya Robert from the Florida Fish and Wildlife Research Institute. This research is part of Honors student Yuliya D.’s thesis.

We also started growing our new lab-rat (Thalassiosira weissflogii) under a range of different lights. This project is co-sponsored by Kyocera LED systems – Thanks Adam for providing us with the light. Our 1st year undergraduate student Taylor M. is working on this project.

In June 2016 the Kranz lab was invited to measure Net Community Productivity (NCP) on the CCE-LTER process cruise. In collaboration with Nicolas Cassar (Duke) we set up two mass spectrometers. The goal on this cruise was to understand changes in time and space along an upwelling filament off the coast of California. In 4 Lagrangian cycles and several transects we were able to map productivity along across the filament and how it changed over time when the waters get horizontally advected, nutrients get taken up and phytoplankton community changed.

We continue on working with the red tide organism Karenia brevis and how CO2 affects carbon acquisition, photophysiology and toxin production. This is an ongoing effort by our PhD student Tristyn B.

Side projects are isotopic fractionation processes of C and N under different isotopic compositions and establishing new methods to support our science.


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