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September 10, 2025Limnology and OceanographyOpen Access

Dynamic benthic oxygen fluxes lessen hypoxia effects on open continental shelves

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Observation reveals that physical dynamics alter oxygen fluxes in benthic environments, suggesting potential resilience to hypoxia.

Increased benthic macrofauna richness and abundance were observed at sites with higher oxygen fluxes and velocity variation.
Daily average oxygen fluxes ranged from −3.5 to −23 mmol m −2 d −1, exceeding rates of dissolved oxygen uptake by sediment cores.
The study utilized in situ aquatic eddy covariance measurements and ex situ sediment core incubations to investigate benthic environments.
These findings highlight the importance of physical dynamics in maintaining dissolved oxygen levels and influencing benthic organism activities.

Reimers et al. (2025) studied this question.

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