Articles | Volume 18, issue 7
Biogeosciences, 18, 2325–2345, 2021
https://doi.org/10.5194/bg-18-2325-2021
Biogeosciences, 18, 2325–2345, 2021
https://doi.org/10.5194/bg-18-2325-2021

Research article 13 Apr 2021

Research article | 13 Apr 2021

Modern silicon dynamics of a small high-latitude subarctic lake

Petra Zahajská et al.

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Short summary
The drivers of high accumulation of single-cell siliceous algae (diatoms) in a high-latitude lake have not been fully characterized before. We studied silicon cycling of the lake through water, radon, silicon, and stable silicon isotope balances. Results showed that groundwater brings 3 times more water and dissolved silica than the stream inlet. We demonstrate that groundwater discharge and low sediment deposition have driven the high diatom accumulation in the studied lake in the past century.
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