Articles | Volume 15, issue 22
https://doi.org/10.5194/bg-15-6791-2018
https://doi.org/10.5194/bg-15-6791-2018
Reviews and syntheses
 | 
15 Nov 2018
Reviews and syntheses |  | 15 Nov 2018

Reviews and syntheses: 210Pb-derived sediment and carbon accumulation rates in vegetated coastal ecosystems – setting the record straight

Ariane Arias-Ortiz, Pere Masqué, Jordi Garcia-Orellana, Oscar Serrano, Inés Mazarrasa, Núria Marbà, Catherine E. Lovelock, Paul S. Lavery, and Carlos M. Duarte

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Cited articles

Aalto, R. and Nittrouer, C.: 210Pb geochronology of flood events in large tropical river systems, Philos. T. R. Soc. A, 370, 2040–2074, https://doi.org/10.1098/rsta.2011.0607, 2012. 
Abril, J. M.: A new theoretical treatment of compaction and the advective-diffusive processes in sediments: a reviewed basis for radiometric dating models, J. Paleolimnol., 30, 363–370, 2003. 
Abril, J. M.: A 210Pb-based chronological model for recent sediments with random entries of mass and activities: Model development, J. Environ. Radioact., 151, 64–74, https://doi.org/10.1016/j.jenvrad.2015.09.018, 2016. 
Abril, J. M. and Gharbi, F.: Radiometric dating of recent sediments: Beyond the boundary conditions, J. Paleolimnol., 48, 449–460, https://doi.org/10.1007/s10933-012-9622-5, 2012. 
Abril, J. M., García-León, M., García-Tenorio, R., Sánchez, C. I., and El-Daoushy, F.: Dating of marine sediments by an incomplete mixing model, J. Environ. Radioactiv., 15, 135–151, https://doi.org/10.1016/0265-931X(91)90048-K, 1992. 
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Efforts to include tidal marsh, mangrove and seagrass ecosystems in existing carbon mitigation strategies are limited by a lack of estimates of carbon accumulation rates (CARs). We discuss the use of 210Pb dating to determine CARs in these habitats, which are often composed of heterogeneous sediments and affected by sedimentary processes. Results show that obtaining reliable geochronologies in these systems is ambitious, but estimates of mean 100-year CARs are mostly secure within 20 % error.
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