Quantifying greenhouse gas emissions from global aquaculture.

Abstract:

: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.

journal_name

Sci Rep

journal_title

Scientific reports

authors

MacLeod MJ,Hasan MR,Robb DHF,Mamun-Ur-Rashid M

doi

10.1038/s41598-020-68231-8

subject

Has Abstract

pub_date

2020-07-15 00:00:00

pages

11679

issue

1

issn

2045-2322

pii

10.1038/s41598-020-68231-8

journal_volume

10

pub_type

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