Ludovic PASCAL

New Deoxygenation Threshold for N2 and N2O Production in Coastal Waters and Sediments Fixed-N is possibly removed in suboxic (<5 μM) microzones on suspended organic matter at bulk O2 ${\mathrm{O}}_{2}$ of 32–59 μM in the St. Lawrence Estuary Benthic and possibly water column fixed...

🚨🌊🧪New paper out!
Fixed-nitrogen shapes ocean productivity. Could its removal also occur in the oxygenated water column, not just sediments?
Our new data from the St. Lawrence suggest it is possible.
See more: doi.org/10.1029/2024...
#nitrogen #ocean #StLawrence #biogeochemistry #N2 #N2O

30.07.2025 20:46 — 👍 6    🔁 0    💬 0    📌 0

Amundsen Science's ASTRID ROV waiting for its first dive

Recovery of the Unisens MiniChamber after a 20h incubation at a depth of 320m

Sampling of sediment core in a microbial mat located in a pockmark using a ROV.

Diving into the deep secrets of the St Lawrence estuary
🌊 First ASTRID ROV & @unisense.bsky.social lander aboard RV Coriolis II!
benthic fluxes, seafloor biodiversity, sediment sampling.
Collaboration between ISMER @uqar.bsky.social, @universitelaval.bsky.social and Amundsen Science
#MarineEcology

29.11.2024 19:22 — 👍 6    🔁 0    💬 0    📌 0

Ludovic PASCAL | Research Assistant | PhD | Université du Québec à Rimouski UQAR, Rimouski | uqar | Institut des Sciences de la Mer de Rimouski (ISMER) | Research profile My research is focused on the functioning of soft-bottom ecosystem and more precisely on the relationships between infauna activity, bioturbation processes and sediment biogeochemistry.

www.researchgate.net/profile/Ludo...

24.11.2024 19:04 — 👍 0    🔁 0    💬 1    📌 0

Hi! Thanks for creating this conversation. Could you please add me to it?

24.11.2024 18:50 — 👍 0    🔁 0    💬 0    📌 0

Hi @davidho.bsky.social, I’d like to be added.

24.11.2024 15:58 — 👍 0    🔁 0    💬 1    📌 0