Kim et al. (2026): Net primary production of cultivated Saccharina japonica (Laminariales) as an indicator of carbon dioxide removal potential in seaweed aquaculture

Boseong Kim, Hyung Woo Lee, Yeo Jin Yoon, Eun Ju Kang, Changsin Kim, Jin Woo Kang et al., IN: Aquaculture, https://doi.org/10.1016/j.aquaculture.2026.744346

Seaweed aquaculture has been increasingly recognized as a potential nature-based solution for marine carbon dioxide removal (mCDR), yet quantitative estimates of carbon uptake remain limited, particularly at cultivation scales. In this study, the authors estimated the net primary production (NPP) of cultivated kelp (Saccharina japonica) by integrating in situ measurements of dissolved inorganic carbon (DIC) uptake with irradiance and biomass dynamics. Seasonal photosynthesis–irradiance (P–E) relationships were derived from field incubation experiments and combined with photosynthetically active radiation (PAR) data to model daily DIC uptake rates. These rates were then scaled with biomass variability over the cultivation cycle to estimate monthly and annual NPP.

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