Aquacultural source of nitrous oxide revealed by nitrogen isotopes.

ABSTRACT: The rapid expansion of coastal aquaculture has led to an increase in the coverage of aquaculture ponds, where intense feed-derived nitrogen is causing significant emissions of nitrous oxide (N₂O). Multiple N₂O production pathways and the relative importance of water column vs. sedimentary production in aquaculture ponds remain uncertain. Clarifying these pathways is vital for sustainable aquaculture development. Using ¹⁵N-labeled dissolved inorganic nitrogen, the pathways and rates of N₂O production in subtropical aquaculture ponds located in south China, cultivating whiteleg shrimp, Japanese seabass, and giant river prawn, were successfully characterized. Total N₂O production rates ranged from 6 to 70 µmol-N m^-2 d^-1

SUBMITTER: Wang Y 

PROVIDER: S-EPMC11399704 | biostudies-literature | 2024 Dec

REPOSITORIES: biostudies-literature