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Diffusive nitrous oxide (N2O) fluxes across the sediment-water-atmosphere interfaces in aquaculture shrimp ponds in a subtropical estuary: Implications for climate warming

Yalan Tian, Ping Yang, Hong Yang, Huimin Wang, Linhai Zhang, Chuan Tong, Derrick Y.F. Lai, Yongxin Lin, Lishan Tan, Yan Hong, Chen Tang, Kam Tang Orcid Logo

Agriculture, Ecosystems and Environment, Volume: 341, Start page: 108218

Swansea University Author: Kam Tang Orcid Logo

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Abstract

Emissions of the potent greenhouse gas nitrous oxide (N2O) from aquaculture remain a large knowledge gap in the global N2O budget. The water column and the sediment of aquaculture ponds present very different environmental conditions, but their relative contributions to N2O production and emission a...

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Published in: Agriculture, Ecosystems and Environment
ISSN: 0167-8809
Published: Elsevier BV 2023
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URI: https://cronfa.swan.ac.uk/Record/cronfa61548
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We sampled three aquaculture ponds in the Min River Estuary in southeastern China monthly throughout the farming season. Based on the dissolved N2O concentrations within the water column and in sediment porewater, we calculated the diffusive N2O fluxes across the water-atmosphere interface (WAI) and sediment-water interface (SWI). The diffusive N2O flux averaged 216.9 nmol m-2 h-1 across WAI and 16.0 nmol m-2 h-1 across SWI. The estimated N2O production rate under steady-state condition was 0.13 nmol L-1 h-1 in the water column and 1.07 nmol L-1 h-1 in sediment porewater. Hence, the water column compartment and the sediment compartment of the aquaculture ponds played different roles in N2O dynamics. Based on our data, it is calculated that China&#x2019;s coastal aquacultural ponds would emit 0.2 Gg N2O yr-1, or less than 1% of all aquaculture N2O emission in China. Therefore, coastal shrimp aquaculture has a relative minor climate impact compared to other aquaculture operations. 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spelling 2022-10-27T15:33:17.3292502 v2 61548 2022-10-13 Diffusive nitrous oxide (N2O) fluxes across the sediment-water-atmosphere interfaces in aquaculture shrimp ponds in a subtropical estuary: Implications for climate warming 69af43a3b9da24aef65c5d3a44956fe3 0000-0001-9427-9564 Kam Tang Kam Tang true false 2022-10-13 SBI Emissions of the potent greenhouse gas nitrous oxide (N2O) from aquaculture remain a large knowledge gap in the global N2O budget. The water column and the sediment of aquaculture ponds present very different environmental conditions, but their relative contributions to N2O production and emission are poorly resolved. We sampled three aquaculture ponds in the Min River Estuary in southeastern China monthly throughout the farming season. Based on the dissolved N2O concentrations within the water column and in sediment porewater, we calculated the diffusive N2O fluxes across the water-atmosphere interface (WAI) and sediment-water interface (SWI). The diffusive N2O flux averaged 216.9 nmol m-2 h-1 across WAI and 16.0 nmol m-2 h-1 across SWI. The estimated N2O production rate under steady-state condition was 0.13 nmol L-1 h-1 in the water column and 1.07 nmol L-1 h-1 in sediment porewater. Hence, the water column compartment and the sediment compartment of the aquaculture ponds played different roles in N2O dynamics. Based on our data, it is calculated that China’s coastal aquacultural ponds would emit 0.2 Gg N2O yr-1, or less than 1% of all aquaculture N2O emission in China. Therefore, coastal shrimp aquaculture has a relative minor climate impact compared to other aquaculture operations. Future studies should examine the role of N-cycling functional genes on N2O production and the mechanisms regulating N2O emission from aquaculture ecosystems. Journal Article Agriculture, Ecosystems and Environment 341 108218 Elsevier BV 0167-8809 Nitrous oxide (N2O) fluxes; Sediment-water interface (SWI); Water-atmosphere interface (WAI); Nitrogen substrate; Temperature; Aquaculture ponds 1 1 2023 2023-01-01 10.1016/j.agee.2022.108218 COLLEGE NANME Biosciences COLLEGE CODE SBI Swansea University Not Required This research was supported jointly by the National Natural Science Foundation of China (41801070, 41671088), the National Natural Science Foundation of Fujian Province (2022R1002006; 2020J01136), and the Minjiang Scholar Programme. 2022-10-27T15:33:17.3292502 2022-10-13T15:47:12.4081619 Faculty of Science and Engineering School of Biosciences, Geography and Physics - Biosciences Yalan Tian 1 Ping Yang 2 Hong Yang 3 Huimin Wang 4 Linhai Zhang 5 Chuan Tong 6 Derrick Y.F. Lai 7 Yongxin Lin 8 Lishan Tan 9 Yan Hong 10 Chen Tang 11 Kam Tang 0000-0001-9427-9564 12 Under embargo Under embargo 2022-10-13T15:51:14.5768490 Output 2416366 application/pdf Accepted Manuscript true 2023-10-20T00:00:00.0000000 ©2022 All rights reserved. All article content, except where otherwise noted, is licensed under a Creative Commons Attribution Non-Commercial No Derivatives License (CC-BY-NC-ND) true eng https://creativecommons.org/licenses/by-nc-nd/4.0/
title Diffusive nitrous oxide (N2O) fluxes across the sediment-water-atmosphere interfaces in aquaculture shrimp ponds in a subtropical estuary: Implications for climate warming
spellingShingle Diffusive nitrous oxide (N2O) fluxes across the sediment-water-atmosphere interfaces in aquaculture shrimp ponds in a subtropical estuary: Implications for climate warming
Kam Tang
title_short Diffusive nitrous oxide (N2O) fluxes across the sediment-water-atmosphere interfaces in aquaculture shrimp ponds in a subtropical estuary: Implications for climate warming
title_full Diffusive nitrous oxide (N2O) fluxes across the sediment-water-atmosphere interfaces in aquaculture shrimp ponds in a subtropical estuary: Implications for climate warming
title_fullStr Diffusive nitrous oxide (N2O) fluxes across the sediment-water-atmosphere interfaces in aquaculture shrimp ponds in a subtropical estuary: Implications for climate warming
title_full_unstemmed Diffusive nitrous oxide (N2O) fluxes across the sediment-water-atmosphere interfaces in aquaculture shrimp ponds in a subtropical estuary: Implications for climate warming
title_sort Diffusive nitrous oxide (N2O) fluxes across the sediment-water-atmosphere interfaces in aquaculture shrimp ponds in a subtropical estuary: Implications for climate warming
author_id_str_mv 69af43a3b9da24aef65c5d3a44956fe3
author_id_fullname_str_mv 69af43a3b9da24aef65c5d3a44956fe3_***_Kam Tang
author Kam Tang
author2 Yalan Tian
Ping Yang
Hong Yang
Huimin Wang
Linhai Zhang
Chuan Tong
Derrick Y.F. Lai
Yongxin Lin
Lishan Tan
Yan Hong
Chen Tang
Kam Tang
format Journal article
container_title Agriculture, Ecosystems and Environment
container_volume 341
container_start_page 108218
publishDate 2023
institution Swansea University
issn 0167-8809
doi_str_mv 10.1016/j.agee.2022.108218
publisher Elsevier BV
college_str Faculty of Science and Engineering
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hierarchy_top_id facultyofscienceandengineering
hierarchy_top_title Faculty of Science and Engineering
hierarchy_parent_id facultyofscienceandengineering
hierarchy_parent_title Faculty of Science and Engineering
department_str School of Biosciences, Geography and Physics - Biosciences{{{_:::_}}}Faculty of Science and Engineering{{{_:::_}}}School of Biosciences, Geography and Physics - Biosciences
document_store_str 0
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description Emissions of the potent greenhouse gas nitrous oxide (N2O) from aquaculture remain a large knowledge gap in the global N2O budget. The water column and the sediment of aquaculture ponds present very different environmental conditions, but their relative contributions to N2O production and emission are poorly resolved. We sampled three aquaculture ponds in the Min River Estuary in southeastern China monthly throughout the farming season. Based on the dissolved N2O concentrations within the water column and in sediment porewater, we calculated the diffusive N2O fluxes across the water-atmosphere interface (WAI) and sediment-water interface (SWI). The diffusive N2O flux averaged 216.9 nmol m-2 h-1 across WAI and 16.0 nmol m-2 h-1 across SWI. The estimated N2O production rate under steady-state condition was 0.13 nmol L-1 h-1 in the water column and 1.07 nmol L-1 h-1 in sediment porewater. Hence, the water column compartment and the sediment compartment of the aquaculture ponds played different roles in N2O dynamics. Based on our data, it is calculated that China’s coastal aquacultural ponds would emit 0.2 Gg N2O yr-1, or less than 1% of all aquaculture N2O emission in China. Therefore, coastal shrimp aquaculture has a relative minor climate impact compared to other aquaculture operations. Future studies should examine the role of N-cycling functional genes on N2O production and the mechanisms regulating N2O emission from aquaculture ecosystems.
published_date 2023-01-01T04:20:27Z
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