Antarctic Plankton Pigments
|Dr. Will Goodall-Copestake deploying the N70 plankton net.|
To complement our investigations into the life of Antarctic fjord seabeds where glaciers are retreating, we have also been investigating what lives in the water column above the seabed. For this we used the N70, a type of a plankton sampling net originally used during the pioneering Discovery Investigations of the early 20th century.
|Krill full of green algae|
|N70 plankton net cod end with catch.|
Our N70 catches were dominated by microalgae (sometimes called phytoplankton), in particular, diatoms. These are consumed by zooplankton such as krill (crustaceans that are very important to the diet of whales, seals and seabirds). The krill we caught were coloured green by the algae they had eaten.
|Cutting through the ice and algae.|