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Biogeosciences An interactive open-access journal of the European Geosciences Union
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BG | Volume 15, issue 13
Biogeosciences, 15, 4033–4045, 2018
https://doi.org/10.5194/bg-15-4033-2018
© Author(s) 2018. This work is distributed under
the Creative Commons Attribution 4.0 License.
Biogeosciences, 15, 4033–4045, 2018
https://doi.org/10.5194/bg-15-4033-2018
© Author(s) 2018. This work is distributed under
the Creative Commons Attribution 4.0 License.

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 et al.
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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. 
Barron, C., Marba, N., Terrados, J., Kennedy, H., and Duarte, C. M.: Community metabolism and carbon budget along a gradient of seagrass (Cymodocea nodosa) colonization, Limnol. Oceanogr., 49, 1642–1651, https://doi.org/10.4319/lo.2004.49.5.1642, 2004. 
Borum, J., Sand-Jensen, K., Binzer, T., Pedersen, O., and Greve, T. M.: Oxygen movement in seagrasses, in: Seagrasses: biology, ecology and conservation, edited by: Larkum, A. W. D., Orth, R. J., and Duarte, C. M., Springer, Dordrecht, 255–270, 2006. 
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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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.
We empirically show that not only suspended-particle trapping but also the direct supply of...
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