Steven Bouillon
Mangrove production and carbon sinks: A revision of global budget estimates.
Bouillon, Steven; Borges, Alberto V; Casta�eda-Moya, Edward; Diele, Karen; Dittmar, Thorsten; Duke, Norman C; Kristensen, Erik; Lee, Shing Yip; Marchand, Cyril; Middelburg, Jack J; Rivera-Monroy, Victor H; Smith, Thomas J; Twilley, Robert R
Authors
Alberto V Borges
Edward Casta�eda-Moya
Prof Karen Diele K.Diele@napier.ac.uk
Professor
Thorsten Dittmar
Norman C Duke
Erik Kristensen
Shing Yip Lee
Cyril Marchand
Jack J Middelburg
Victor H Rivera-Monroy
Thomas J Smith
Robert R Twilley
Abstract
Mangrove forests are highly productive but globally threatened coastal ecosystems, whose role in the carbon budget of the coastal zone has long been debated. Here we provide a comprehensive synthesis of the available data on carbon fluxes in mangrove ecosystems. A reassessment of global mangrove primary production from the literature results in a conservative estimate of ∼218 ± 72 Tg C a−1. When using the best available estimates of various carbon sinks (organic carbon export, sediment burial, and mineralization), it appears that >50% of the carbon fixed by mangrove vegetation is unaccounted for. This unaccounted carbon sink is conservatively estimated at ∼112 ± 85 Tg C a−1, equivalent in magnitude to ∼30–40% of the global riverine organic carbon input to the coastal zone. Our analysis suggests that mineralization is severely underestimated, and that the majority of carbon export from mangroves to adjacent waters occurs as dissolved inorganic carbon (DIC). CO2 efflux from sediments and creek waters and tidal export of DIC appear to be the major sinks. These processes are quantitatively comparable in magnitude to the unaccounted carbon sink in current budgets, but are not yet adequately constrained with the limited published data available so far.
Citation
Bouillon, S., Borges, A. V., Castañeda-Moya, E., Diele, K., Dittmar, T., Duke, N. C., …Twilley, R. R. (2008). Mangrove production and carbon sinks: A revision of global budget estimates. Global Biogeochemical Cycles, 22, https://doi.org/10.1029/2007GB003052
Journal Article Type | Article |
---|---|
Publication Date | 2008 |
Deposit Date | Sep 23, 2013 |
Print ISSN | 0886-6236 |
Electronic ISSN | 1944-9224 |
Publisher | American Geophysical Union |
Peer Reviewed | Peer Reviewed |
Volume | 22 |
DOI | https://doi.org/10.1029/2007GB003052 |
Keywords | Biogeochemical cycles; processes; modeling; Carbon cycling; Wetlands; |
Public URL | http://researchrepository.napier.ac.uk/id/eprint/6348 |
Publisher URL | http://dx.doi.org/10.1029/2007GB003052 |
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