Ocean acidification in the Gulf of St. Lawrence

Ocean acidification in the Gulf of St. Lawrence

Ocean acidification in the Gulf of St. Lawrence https://oceandecade.org/wp-content/uploads/whale.jpeg 2560 1707 Ocean Decade Ocean Decade https://oceandecade.org/wp-content/uploads/whale.jpeg September 28, 2022 June 19, 2024

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Lead institution:

Maurice Lamontagne Institute – Canada

Ocean acidification (OA) is particularly important in the Gulf of St. Lawrence (GSL) due to high river runoff and high primary production that is routed towards the deep layer where it is remineralized to dissolved inorganic carbon, increasing pCO2 and lowering pH and calcium carbonate saturations (omega).

Lavoie et al. showed higher acidification occurring in the estuary, at mid-depth in the northwest GSL and on the Magdalen Shallows, with large daily and seasonal variability. Many marine species are negatively impacted by OA conditions. OA thresholds are highly species-specific and duration-dependent. Monitoring provides information on actual OA conditions but not on their duration.

Start Date: 01/04/2021
End Date: 30/06/2025

Lead Contact: Diane Lavoie (diane.lavoie@dfo-mpo.gc.ca)

challenges:

2- Protect and restore ecosystems

3- Sustainable blue food

5- Ocean-climate nexus

host_programme:

Ocean Acidification Research for Sustainability (OARS)

ocean_basins:

North Atlantic Ocean

Ocean acidification in the Gulf of St. Lawrence