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Seasonal variations in source-sink balance of CO2 in subtropical earthen aquaculture ponds: Implications for carbon emission management

Lele Tang Orcid Logo, Linhai Zhang, Ping Yang Orcid Logo, Chuan Tong, Hong Yang, Lishan Tan Orcid Logo, Yongxin Lin Orcid Logo, Derrick Y.F. Lai, Kam Tang Orcid Logo

Journal of Hydrology, Volume: 626, Start page: 130330

Swansea University Author: Kam Tang Orcid Logo

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DOI (Published version): 10.1016/j.jhydrol.2023.130330

Abstract

Aquaculture ponds serve as focal points for carbon cycling and act as anthropogenic contributors to the emission of carbon dioxide (CO2). To understand the seasonal CO2 dynamics within the ponds, we measured the CO2 concentrations in sediment porewater and the water column in aquaculture ponds in th...

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Published in: Journal of Hydrology
ISSN: 0022-1694
Published: Elsevier BV 2023
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URI: https://cronfa.swan.ac.uk/Record/cronfa64659
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To understand the seasonal CO2 dynamics within the ponds, we measured the CO2 concentrations in sediment porewater and the water column in aquaculture ponds in the Shanyutan Wetland in China. Subsequently, the sediment-to-water and water-to-air CO2 fluxes were calculated based on the gas transfer coefficient model. Our results showed that that CO2 flux ranged 0.01–4.58 mmol m-2 h-1 across the sediment-to-water interface and -0.08–0.45 mmol m-2 h-1 across the water-to-air interface throughout the farming period. Photosynthetic activity was the key driver of the temporal variations in water column CO2 concentration and water-to-air CO2 flux, while the change in porewater CO2 concentration and sediment-to-water CO2 flux were governed by sediment temperature which drive the microbial decomposition of organic matter. Based on a simple mass balance approach, the apparent CO2 consumption (ACC) in the water column across all seasons ranged from 0.24 to 2.32 mmol m-2 h-1, indicating that the pond water body had a high capacity to “consume” the excess CO2. 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spelling v2 64659 2023-10-05 Seasonal variations in source-sink balance of CO2 in subtropical earthen aquaculture ponds: Implications for carbon emission management 69af43a3b9da24aef65c5d3a44956fe3 0000-0001-9427-9564 Kam Tang Kam Tang true false 2023-10-05 SBI Aquaculture ponds serve as focal points for carbon cycling and act as anthropogenic contributors to the emission of carbon dioxide (CO2). To understand the seasonal CO2 dynamics within the ponds, we measured the CO2 concentrations in sediment porewater and the water column in aquaculture ponds in the Shanyutan Wetland in China. Subsequently, the sediment-to-water and water-to-air CO2 fluxes were calculated based on the gas transfer coefficient model. Our results showed that that CO2 flux ranged 0.01–4.58 mmol m-2 h-1 across the sediment-to-water interface and -0.08–0.45 mmol m-2 h-1 across the water-to-air interface throughout the farming period. Photosynthetic activity was the key driver of the temporal variations in water column CO2 concentration and water-to-air CO2 flux, while the change in porewater CO2 concentration and sediment-to-water CO2 flux were governed by sediment temperature which drive the microbial decomposition of organic matter. Based on a simple mass balance approach, the apparent CO2 consumption (ACC) in the water column across all seasons ranged from 0.24 to 2.32 mmol m-2 h-1, indicating that the pond water body had a high capacity to “consume” the excess CO2. Our results highlight that the contrasting roles between the sediment compartment and water column compartment in CO2 dynamics, and the possibility to manipulate ACC to reduce the aquaculture carbon footprint. Journal Article Journal of Hydrology 626 130330 Elsevier BV 0022-1694 Carbon dioxide, aquaculture ponds, carbon footprint, photosynthesis, climate impact 30 11 2023 2023-11-30 10.1016/j.jhydrol.2023.130330 http://dx.doi.org/10.1016/j.jhydrol.2023.130330 COLLEGE NANME Biosciences COLLEGE CODE SBI Swansea University Not Required This research received joint support from the National Natural Science Foundation of China (41801070, 41671088) and the Natural Science Foundation of Fujian Province (2020J01136; 2022R1002006) . 2023-11-06T14:32:53.8996049 2023-10-05T12:58:11.9028314 Faculty of Science and Engineering School of Biosciences, Geography and Physics - Biosciences Lele Tang 0009-0001-8725-3451 1 Linhai Zhang 2 Ping Yang 0000-0002-5212-6065 3 Chuan Tong 4 Hong Yang 5 Lishan Tan 0000-0002-9714-1728 6 Yongxin Lin 0000-0002-0305-5766 7 Derrick Y.F. Lai 8 Kam Tang 0000-0001-9427-9564 9 64659__28713__0f66ef9456644d669f390a7a0b9cd683.pdf JHydrology accepted 051023.pdf 2023-10-05T13:02:01.1018277 Output 2734369 application/pdf Accepted Manuscript true Author accepted manuscript document released under the terms of a Creative Commons CC-BY licence using the Swansea University Research Publications Policy true eng https://creativecommons.org/licenses/by/4.0/
title Seasonal variations in source-sink balance of CO2 in subtropical earthen aquaculture ponds: Implications for carbon emission management
spellingShingle Seasonal variations in source-sink balance of CO2 in subtropical earthen aquaculture ponds: Implications for carbon emission management
Kam Tang
title_short Seasonal variations in source-sink balance of CO2 in subtropical earthen aquaculture ponds: Implications for carbon emission management
title_full Seasonal variations in source-sink balance of CO2 in subtropical earthen aquaculture ponds: Implications for carbon emission management
title_fullStr Seasonal variations in source-sink balance of CO2 in subtropical earthen aquaculture ponds: Implications for carbon emission management
title_full_unstemmed Seasonal variations in source-sink balance of CO2 in subtropical earthen aquaculture ponds: Implications for carbon emission management
title_sort Seasonal variations in source-sink balance of CO2 in subtropical earthen aquaculture ponds: Implications for carbon emission management
author_id_str_mv 69af43a3b9da24aef65c5d3a44956fe3
author_id_fullname_str_mv 69af43a3b9da24aef65c5d3a44956fe3_***_Kam Tang
author Kam Tang
author2 Lele Tang
Linhai Zhang
Ping Yang
Chuan Tong
Hong Yang
Lishan Tan
Yongxin Lin
Derrick Y.F. Lai
Kam Tang
format Journal article
container_title Journal of Hydrology
container_volume 626
container_start_page 130330
publishDate 2023
institution Swansea University
issn 0022-1694
doi_str_mv 10.1016/j.jhydrol.2023.130330
publisher Elsevier BV
college_str Faculty of Science and Engineering
hierarchytype
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
url http://dx.doi.org/10.1016/j.jhydrol.2023.130330
document_store_str 1
active_str 0
description Aquaculture ponds serve as focal points for carbon cycling and act as anthropogenic contributors to the emission of carbon dioxide (CO2). To understand the seasonal CO2 dynamics within the ponds, we measured the CO2 concentrations in sediment porewater and the water column in aquaculture ponds in the Shanyutan Wetland in China. Subsequently, the sediment-to-water and water-to-air CO2 fluxes were calculated based on the gas transfer coefficient model. Our results showed that that CO2 flux ranged 0.01–4.58 mmol m-2 h-1 across the sediment-to-water interface and -0.08–0.45 mmol m-2 h-1 across the water-to-air interface throughout the farming period. Photosynthetic activity was the key driver of the temporal variations in water column CO2 concentration and water-to-air CO2 flux, while the change in porewater CO2 concentration and sediment-to-water CO2 flux were governed by sediment temperature which drive the microbial decomposition of organic matter. Based on a simple mass balance approach, the apparent CO2 consumption (ACC) in the water column across all seasons ranged from 0.24 to 2.32 mmol m-2 h-1, indicating that the pond water body had a high capacity to “consume” the excess CO2. Our results highlight that the contrasting roles between the sediment compartment and water column compartment in CO2 dynamics, and the possibility to manipulate ACC to reduce the aquaculture carbon footprint.
published_date 2023-11-30T14:32:59Z
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