Articles | Volume 11, issue 1
Research article
06 Jan 2015
Research article |  | 06 Jan 2015

Photic zone changes in the north-west Pacific Ocean from MIS 4–5e

G. E. A. Swann and A. M. Snelling


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Short summary
New diatom isotope records are presented alongside existing geochemical and isotope records to document changes in the photic zone, including nutrient supply and the efficiency of the soft-tissue biological pump, between MIS 4 and MIS 5e in the subarctic north-west Pacific Ocean. The results provide evidence for temporal changes in the strength and efficiency of the regional soft-tissue biological pump, altering the ratio of regenerated to preformed nutrients in the water.