Seaweed ecosystems may not mitigate CO2 emissions

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John Barry Gallagher, Victor Shelamoff, Cayne Layton

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Gallgher, J.B., Shelamoff, V., Layton, C. 2022. "Seaweed ecosystems may not mitigate CO2 emissions." ICES Journal of Marine Science 0, 1-8 (2022).


This report clarifies: (i) the role of export relative to seaweed net ecosystem production (NEP) for a closed system and one more likely open to subsidies; (ii) the importance of subsidies by compiling published estimates of NEP from seaweed-dominated ecosystems; and (iii) discuss their impact on the global seaweed net carbon balance and other sequestration constraints as a mitigation service.

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