Temporal and spatial evolution of bottom-water hypoxia in the St Lawrence estuarine system

• Published in: Biogeosciences
• Main Authors: M. Jutras, A. Mucci, G. Chaillou, W. A. Nesbitt, D. W. R. Wallace
• Format: Article in Journal/Newspaper
• Language: English
• Published: Copernicus Publications 2023
• Subjects: Ecology; QH540-549.5; Life; QH501-531; Geology; QE1-996.5; Cabot; North Atlantic
• Online Access: https://doi.org/10.5194/bg-20-839-2023; https://doaj.org/article/5b9862e4e32145e1afc53875985ac1d0

Persistent hypoxic bottom waters have developed in the Lower St Lawrence Estuary (LSLE) and have impacted fish and benthic species distributions. Minimum dissolved oxygen concentrations decreased from ∼ 125 µ mol L −1 (38 % saturation) in the 1930s to ∼ 65 µ mol L −1 (21 % saturation) in 1984. Minim...