Letter | Published:

Biological Buffering of Oceanic Silica

Nature volume 212, pages 275276 (15 October 1966) | Download Citation

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Abstract

CALCULATION of a silica budget for the oceans provides useful quantitative information about the factors controlling the concentration of oceanic silica. The geochemical cycle of silica involves its release to continental waters during terrestrial weathering and subsequent introduction into the oceans, the release of silica directly to ocean water during submarine weathering, and its utilization in the biochemical cycles of marine plants and animals. Some organically bound silica is removed from the oceanic reservoir through deposition in the sediment, and some is regenerated in the water column and at the interface between water and sediment. In a study of possible variations in the concentration of dissolved silica during the evolution of the oceans, silica budget calculations were made for the modern ocean.

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Author information

Author notes

    • ROBERT C. HARRISS

    Present address: Department of Geology, McMaster University, Hamilton, Ontario.

Affiliations

  1. Hoffman Laboratory, Harvard University, Cambridge, Mass.

    • ROBERT C. HARRISS

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https://doi.org/10.1038/212275a0

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