Abstract
This study revealed the greenhouse gas (GHG) emission patterns during shrimp mariculture in both semi-indoor and indoor ponds. In the semi-indoor ponds, the average carbon dioxide (CO2), methane (CH4), and nitrous oxide (N2O) concentrations of pond water varied from 1373.0±721.7 μatm, 4.4±1.3nM, and 14.2±3.5nM, respectively, at the initiation of stocking to 5296.0±1474.7 μatm, 3.8±0.3nM, and 28.1±17.9nM, respectively, in the harvest stage. In the indoor pond, these varied from 562 μatm, 3.5±0.2nM, and 10.7±0.1nM, respectively, at the initiation of stocking to 4728.0 μatm, 18.2±0.7nM, and 94.1±0.6nM, respectively, in the harvest stage. An upward trend in CO₂ and N₂O concentrations was observed in the water of both semi-indoor and indoor ponds as the culture period progressed. The discharged waters exhibited the highest GHG concentrations, potentially acting as emission hotspots if left untreated. The total average CO₂-equivalent (CO₂-eq) fluxes from pond water during the shrimp mariculture period were 49.8±40.7mg CO₂-eqm-2h-1 in the semi-indoor ponds, with 44% of these GHG emissions attributable to shrimp mariculture practices. In the indoor pond, the fluxes were 101.5±52.6mg CO₂-eqm-2h-1, with 86% of the GHG emissions attributable to shrimp mariculture practices. According to these results, shading effects may increase the GHG emissions from aquaculture pond waters.
Published Version
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call