Quantifying greenhouse gas emissions from global aquaculture

M MacLeod*, Mohammad R Hasan, David HF Robb, M. Mamun-Ur-Rashid

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

136 Citations (Scopus)
131 Downloads (Pure)


Global aquaculture makes an important contribution to food security directly (by increasing food availability and accessibility) and indirectly (as a driver of economic development). in order to enable sustainable expansion of aquaculture, we need to understand aquaculture’s contribution to global greenhouse gas (GHG) emissions and how it can be mitigated. This study quantifies the global GHG emissions from aquaculture (excluding the farming of aquatic plants), with a focus on using modern, commercial feed formulations for the main species groups and geographic regions. Here we show that global aquaculture accounted for approximately 0.49% of anthropogenic GHG emissions in 2017, which is similar in magnitude to the emissions from sheep production. The modest emissions reflect the low emissions intensity of aquaculture, compared to terrestrial livestock (in particular cattle, sheep and goats), which is due largely to the absence of enteric cH4 in aquaculture, combined with the high fertility and low feed conversion ratios of finfish and shellfish.
Original languageEnglish
Article number11679
Number of pages8
JournalScientific Reports
Early online date15 Jul 2020
Publication statusFirst published - 15 Jul 2020


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