Ocean depth and surface productivity drive how much oxygen the seabed consumes
In short: Researchers analyzing nearly 4,000 data points on marine sediments found that oxygen uptake on the seafloor is largely determined by how deep the ocean is and how much life thrives at the surface. By compiling a massive database of oxygen consumption, the study provides a clearer picture of how the seabed processes organic carbon.
The study used a multiple correlation analysis of oxygen uptake data across various marine environments, including abyssal plains and trenches. This allowed the team to map global oxygen uptake rates and estimate the total oxidation of organic carbon. However, the findings rely on a compilation of existing datasets, which may include varying degrees of methodological error or statistical uncertainty from different measurement approaches.
Why it matters: Understanding how the seafloor breathes is essential for calculating the Earth's global carbon budget.
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Sources
- Source: Research: Jrgensen et al. (2022). Sediment oxygen consumption: Role in the global marine carbon cycle. Earth-Science Reviews. · cc-by
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