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Mangrove productionand carbon sinks: Arevision of globalbudget estimates Steven BouillonAlberto BorgesEdward Castañeda‐Moya2008 год

Mangrove production and carbon sinks: A revision of global budget estimates
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Аннотация: 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). CO 2 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.
Год издания: 2008
Авторы: Steven Bouillon, Alberto Borges, Edward Castañeda‐Moya, Karen Diele, Thorsten Dittmar, Norman C. Duke, Erik Kristensen, Shing Yip Lee, Cyril Marchand, Jack J. Middelburg, Víctor H. Rivera‐Monroy, Thomas J. Smith, Robert R. Twilley
Издательство: Wiley
Источник: Global Biogeochemical Cycles
Ключевые слова: Coastal wetland ecosystem dynamics, Coastal and Marine Dynamics, Geology and Paleoclimatology Research
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