Articles | Volume 15, issue 13
https://doi.org/10.5194/bg-15-4033-2018
https://doi.org/10.5194/bg-15-4033-2018
Research article
 | 
03 Jul 2018
Research article |  | 03 Jul 2018

Contributions of the direct supply of belowground seagrass detritus and trapping of suspended organic matter to the sedimentary organic carbon stock in seagrass meadows

Toko Tanaya, Kenta Watanabe, Shoji Yamamoto, Chuki Hongo, Hajime Kayanne, and Tomohiro Kuwae

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Cited articles

Agawin, N. S. and Duarte, C. M.: Evidence of direct particle trapping by a tropical seagrass meadow, Estuaries, 25, 1205–1209, https://doi.org/10.1007/BF02692217, 2002. 
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Cebrian, J., Pedersen, M. F., Kroeger, K. D., and Valiela, I.: Fate of production of the seagrass Cymodocea nodosa in different stages of meadow formation, Mar. Ecol.-Prog. Ser., 204, 119–130, https://doi.org/10.3354/meps204119, 2000. 
Dahl, M., Deyanova, D., Lyimo, L. D., Näslund, J., Samuelsson, G. S., Mtolera, M. S. P., Björk, M., and Gullström, M.: Effects of shading and simulated grazing on carbon sequestration in a tropical seagrass meadow, J. Ecol., 104, 654–664, https://doi.org/10.1111/1365-2745.12564, 2016. 
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Short summary
We empirically show that not only suspended-particle trapping but also the direct supply of belowground seagrass detritus can be the dominant organic carbon enrichment pathway of seagrass sediments. The relative importance of these two pathways may depend on the belowground biomass productivity. Our work identifies a previously overlooked factor controlling the carbon sink capacity of seagrass meadows and contributes to more precise estimates of global blue carbon stocks.
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