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Journal of Paleolimnology

, Volume 37, Issue 4, pp 591–602 | Cite as

The need to correct for the Suess effect in the application of δ13C in sediment of autotrophic Lake Tanganyika, as a productivity proxy in the Anthropocene

  • Piet Verburg
Original Paper

Abstract

The change in dissolved inorganic δ13C in the ocean resulting from the change in δ13C in atmospheric CO2 owing to anthropogenic activities (the Suess effect) is well known. The need to correct for the Suess effect when applying δ13C in organic matter in lacustrine sediment deposited during the anthropocene as a productivity proxy, is widely although not universally acknowledged. This paper reviews conceptions about the Suess effect in lacustrine δ13Corg and methods to adjust for the Suess effect when δ13Corg is used to infer recent changes in aquatic productivity. Lake Tanganyika is used as an example to illustrate the necessity of the correction. When the Suess effect is not considered, interpretations of sediment core data can result that are opposite to those achieved with the correction applied, as is here shown in Lake Tanganyika and in other lakes. A new method to correct for the Suess effect is provided which has the advantage of being applicable to data for a larger period (1700–2000) than methods currently available. In addition, Lake Tanganyika is shown to be a net sink for CO2.

Keywords

δ13Suess effect Autotrophic Tanganyika Productivity Climate change 

Notes

Acknowledgements

I am grateful to Anathea Albert for editing and comments and for the comments of two anonymous reviewers.

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Copyright information

© Springer Science+Business Media B.V. 2006

Authors and Affiliations

  1. 1.National Center for Ecological Analysis and SynthesisUniversity of CaliforniaSanta BarbaraUSA

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