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Aquaculture Environment Interactions

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AEI - Vol. 11 - Feature article
Emission of diffusive methane from a temperate fishpond and inputs inducing CH4 production in carp ponds: (A) manuring and (B) feeding.
Photo credit: Dr. Bořek Drozd (Faculty of Fisheries, University of South Bohemia)

Rutegwa M, Gebauer R, Veselý L, Regenda J, Strunecký O, Hejzlar J, Drozd B


Diffusive methane emissions from temperate semi-intensive carp ponds


Assessing the environmental impacts of aquaculture is a step towards ecologically and economically sustainable aquaculture. Rutegwa et al. aimed to determine and compare levels of dissolved and diffusive CH4 between nursery and main carp ponds with different feeding rates and organic loading and to investigate influencing factors. Surface CH4 concentrations were measured, and diffusive CH4 flux was estimated using a wind-based trans-boundary layer model during one growing season. All ponds were sources of CH4 with (mean ± SD) diffusive CH4 fluxes higher in nursery ponds (9.1 ± 6.8 mg C m-2 d-1than in main ponds (6.4 ± 6.9 mg C m-2 d-1). This study provides information on the role of carp aquaculture in greenhouse gas emission in temperate regions.


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