3 August 2023
Conference: Margaux Perhirin - (LOCEAN - ULaval)
Party poopers: observed links between copepods and carbon export through faecal pellets in Baffin Bay
August 3rd 2023, 10:00 AM
In person, at Laval University or by ZOOM
Summary :
Internship report on the use of Omics images and data to study zooplankton communities
Margaux is a 1st year PhD student at LOCEAN (Laboratoire d'Océanographie et du Climat - Expérimentations et Approches Numériques), co-supervised by Sakina-Dorothée Ayata (LOCEAN) and Frédéric Maps (Université Laval).
The aim of her PhD is to analyze the functional diversity of mesozooplankton in different parts of the global ocean and to understand how this may be linked to carbon export, using images obtained at individual scales with tools such as Zooscan or the Underwater Vision Profiler (UVP).
During her Master's internship and the first part of her PhD, she studied the link between taxonomic and functional diversity of mesozooplankton at the Bermuda Atlantic Time-series Study (off the coast of Bermuda). To do this, she analyzed metabarcoding data (obtained from mesozooplankton DNA), indicating which taxa were in the ecosystem at the time of sampling; and Zooscan data, indicating what the organisms present in the ecosystem looked like. She also correlated these two complementary types of data with sediment trap data. She is now working on UVP5 data from the GreenEdge campaign and analyzing these images in situ, to make links between copepods and carbon export, via their potential fecal pellets, hence her two-month visit to Université Laval, which she will review during this presentation.
