Articles | Volume 17, issue 9
Biogeosciences, 17, 2425–2440, 2020
Biogeosciences, 17, 2425–2440, 2020

Research article 05 May 2020

Research article | 05 May 2020

Macroalgal metabolism and lateral carbon flows can create significant carbon sinks

Kenta Watanabe et al.

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Cited articles

Abdullah, M. I. and Fredriksen, S.: Production, respiration and exudation of dissolved organic matter by the kelp Laminaria hyperborea along the west coast of Norway, J. Mar. Biol. Assoc. UK, 84, 887–894,, 2004. 
Arrieta, J. M., Mayol, E., Hansman, R. L., Herndl, G. J., Dittmar, T., and Duarte, C. M.: Dilution limits dissolved organic carbon utilization in the deep ocean, Science, 348, 331–333,, 2015. 
Balotro, R. S., Isobe, A., Shimizu, M., Kaneda, A., Takeuchi, T., and Takeoka, H.: Circulation and Material Transport in Suo-Nada during Spring and Summer, J. Oceanogr., 58, 759–773,, 2002. 
Barrón, C., Apostolaki, E. T., and Duarte, C. M.: Dissolved organic carbon fluxes by seagrass meadows and macroalgal beds, Front. Mar. Sci., 1, 42,, 2014. 
Bauer, J. E. and Bianchi, T. S.: Dissolved Organic Carbon Cycling and Transformation, in: Treatise on Estuarine and Coastal Science, edited by: Wolanski, E. and McLusky, D. S., Academic Press, Sam Diego, CA, USA, 7–67,, 2011. 
Short summary
Macroalgal beds are among the vegetated coastal ecosystems that take up atmospheric CO2. We investigated the relationships between macroalgal metabolism and inorganic and organic carbon fluxes in a temperate macroalgal bed during the productive time of year. The macroalgal metabolism formed water with low CO2 and high dissolved organic carbon concentrations that was then exported offshore. This export process potentially enhances CO2 uptake in and around macroalgal beds.
Final-revised paper