Germanium cycling in the waters across a frontal zone: the Chatham Rise, New Zealand
Transect and profile data reveal that Si and Ge concentrations are depleted in the surface waters across a frontal zone to the east of New Zealand. These results are consistent with Si and Ge uptake and regeneration from siliceous organisms. The Ge/Si ratio along three transects is not constant with Si utilisation indicating that there is fractionation between Si and Ge during uptake by phytoplankton. A fractionation factor (KD) of 0.36 is obtained from the transect data for Si concentrations...[Show more]
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