Photo of the Week

We are excited to bring back our Photo of the Week section so stay tuned for new content coming soon! In the meantime, take a look at these fantastic pictures from our teachers.

Don’t Forget the Phytoplankton!

May 28, 2019
A scientist aboard R/V Tiglax prepares filters to separate large and small phytoplankton from seawater samples.

Photo: Katie Gavenus

The plankton living in this water is processed in a multitude of ways. First, in the lab on the ship, some of the water is passed through two filters to catch phytoplankton of differing sizes. These filters are chemically extracted for 24 hours before being analyzed using a fluorometer, which measures the fluorescence of the pigment Chlorophyll-a. This provides a quantitative measurement of Chlorophyll-a biomass. It also allows researchers to determine whether the phytoplankton community at a given time and place is dominated by ‘large’ phytoplankton or ‘small’ phytoplankton.
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