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Carbon accumulation in Amazonian floodplain lakes: A significant component of amazon budgets?

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Joseph M. Smoak

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The Amazon floodplains cover approximately 10% of the Amazon Basin and are composed of predominantly anoxic sediments that may store large amounts of carbon. Our study combines 210Pb derived sedimentation rates from four recently analyzed sediment cores (n = 4) with previously published organic carbon (OC) burial estimates (n = 18) to provide a broad, first order estimate of carbon accumulation in Amazon floodplain lakes. The OC burial rates were 266 ± 57 g C m−2 yr−1. This rate is several folds greater than those reported for lakes in arctic, boreal, temperate, and tropical regions. The large amount and spatial variation of OC burial rates in these floodplain lakes highlights the need for increased sampling efforts to better measure these potentially important components of the Amazon Basin carbon budget.


Abstract only. Full-text article is available through licensed access provided by the publisher. Published in Limnology and Oceanography Letters, 2(1), 29-35. doi: 10.1002/lol2.10034. Members of the USF System may access the full-text of the article through the authenticated link.


John Wiley & Sons, Inc.

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Creative Commons Attribution-Noncommercial-No Derivative Works 4.0 License
This work is licensed under a Creative Commons Attribution-Noncommercial-No Derivative Works 4.0 License.