Editing IPCC:AR6/SRCCL/Chapter-5 (section)

==== 5.5.1.5 Greenhouse gas mitigation in aquaculture ====

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Barange et al. (2018) <sup>[[#fn:r853|853]]</sup> provide a synthesis of effective options for GHG emissions reduction in aquaculture, including reduction of emissions from production of feed material, replacement of fish-based feed ingredients with crop-based ingredients; reduction of emissions from feed mill energy use, improvement of feed conversion rates, improvement of input use efficiency, shift of energy supply (from high-carbon fossil fuels to low-carbon fossil fuels or renewables), and improvement of fish health. Conversion of 25% of total aquaculture area to integrated aquaculture-agriculture ponds (greening aquaculture) has the potential to sequester 95.4 million tonnes of carbon per year (Ahmed et al. 2017 <sup>[[#fn:r854|854]]</sup> ).

Proposed mitigation in aquaculture includes avoided deforestation. By halting annual mangrove deforestation in Indonesia, associated total emissions would be reduced by 10–31% of estimated annual emissions from the land-use sector at present (Murdiyarso et al. 2015 <sup>[[#fn:r855|855]]</sup> ). Globally, 25% mangrove regeneration could sequester 0.54–0.65 million tonnes of carbon per year (Ahmed et al. 2017 <sup>[[#fn:r856|856]]</sup> ) of which 0.17–0.21 million tonnes could be through integrated or organic shrimp culture (Ahmed et al. 2018 <sup>[[#fn:r857|857]]</sup> ).

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