Substantial role of macroalgae in marine carbon sequestration

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Connected macroalgal‐sediment systems: blue carbon and food webs in the deep coastal ocean (2019, background): “Further measurements of dissolved organic carbon production generated by macroalgal communities, and its potential benthic uptake (which we did not measure) could further increase global significance of the sequestration fluxes we estimate (Krause-Jensen and Duarte 2016).”
Substantial seagrass blue carbon pools in the southwestern Baltic Sea are spatially heterogeneous, mostly autochthonous, and include relics of terrestrial peatlands (2022, background): “…coastal vegetated ecosystems, like seagrass meadows, mangrove forests, and tidal salt marshes, account for almost half of the total organic carbon (Corg) buried in marine sediments (Duarte et al. 2005, Mcleod et al. 2011, Krause-Jensen and Duarte 2016), collectively estimated to mitigate approx.”
The future of seaweed aquaculture in a rapidly changing world (2017, background): “The estimate of Krause-Jensen & Duarte (2016) of about 173 Tg C year–1 (with a range of 61–268 Tg C year–1) fixed by seaweeds globally is a relatively small proportion of total oceanic primary production (54–59 Pg C year–1) and the increase in atmospheric CO2 of 4 Pg C year −1 (Denman et al., 2007).”