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HandWiki. F-Ratio. Encyclopedia. Available online: https://encyclopedia.pub/entry/34896 (accessed on 08 October 2026).
HandWiki. F-Ratio. Encyclopedia. Available at: https://encyclopedia.pub/entry/34896. Accessed October 08, 2026.
HandWiki. "F-Ratio" Encyclopedia, https://encyclopedia.pub/entry/34896 (accessed October 08, 2026).
HandWiki. (2022, November 16). F-Ratio. In Encyclopedia. https://encyclopedia.pub/entry/34896
HandWiki. "F-Ratio." Encyclopedia. Web. 16 November, 2022.
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In oceanic biogeochemistry, the f-ratio is the fraction of total primary production fuelled by nitrate (as opposed to that fuelled by other nitrogen compounds such as ammonium). The ratio was originally defined by Richard Eppley and Bruce Peterson in one of the first papers estimating global oceanic production. This fraction was originally believed significant because it appeared to directly relate to the sinking (export) flux of organic marine snow from the surface ocean by the biological pump. However, this interpretation relied on the assumption of a strong depth-partitioning of a parallel process, nitrification, that more recent measurements has questioned.
biogeochemistry
nitrate
f-ratio
References
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