The ratio of nutrient elements in marine subsurface waters is much the same everywhere, even though biogeochemically distinct ocean biomes exist. A modelling study that includes mixing solves this conundrum. See Article p.550
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Sambrotto, R. Ocean biomes blended. Nature 467, 538–539 (2010). https://doi.org/10.1038/467538a
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DOI: https://doi.org/10.1038/467538a
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