Sediment CO<sub>2</sub> Flux from a Mangrove in Southern China: Is It Controlled by Spatiotemporal, Biotic or Physical Factors?
Carbon gas flux is important for studies on carbon dynamics in mangroves, but the controlling factors have not always been sufficiently understood. In this study, it is suggested that sediment carbon dioxide (CO<sub>2</sub>) fluxes in a natural mangrove in Southern China are controlled b...
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MDPI AG
2023-04-01
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| Series: | Forests |
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| Online Access: | https://www.mdpi.com/1999-4907/14/4/782 |
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| author | Siqi Nie Xiaoguang Ouyang Wenqing Wang Zhenchang Zhu Fen Guo Zhifeng Yang Shing Yip Lee |
| author_facet | Siqi Nie Xiaoguang Ouyang Wenqing Wang Zhenchang Zhu Fen Guo Zhifeng Yang Shing Yip Lee |
| author_sort | Siqi Nie |
| collection | DOAJ |
| description | Carbon gas flux is important for studies on carbon dynamics in mangroves, but the controlling factors have not always been sufficiently understood. In this study, it is suggested that sediment carbon dioxide (CO<sub>2</sub>) fluxes in a natural mangrove in Southern China are controlled by tidal positions, seasons, species, the densities of crab burrows and pneumatophores, light conditions and sediment temperature. All these factors account for 51.47% variation in CO<sub>2</sub> flux from the sediment–air interface. CO<sub>2</sub> flux generally decreased along the tidal position from landward to seaward, and was higher in the dry season than in the wet season. CO<sub>2</sub> flux was highest in <i>Avicennia</i> marina (grey mangrove) in comparison with <i>Aegiceras corniculatum</i> (river mangrove) and <i>Kandelia obovata</i>. Pneumatophores and crab burrows promoted sediment CO<sub>2</sub> flux in the mangrove at a rate of 18.29 and 15.52 mmol m<sup>−2</sup> d<sup>−1</sup>. Dark flux was higher than light flux. Sediment temperature has a negative influence on CO<sub>2</sub> flux. Pneumatophores explain the most variation (13.9%) in CO<sub>2</sub> flux among the above factors. Our study suggests that the photosynthesis activity of microphytobenthos is an important factor driving the change of CO<sub>2</sub> emissions in this natural mangrove. This is of great significance for the study and for the full exploitation of the carbon sink potential of mangroves. |
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| id | doaj.art-aa6e04870c9c4fe2a6e7982950911c42 |
| institution | Directory Open Access Journal |
| issn | 1999-4907 |
| language | English |
| last_indexed | 2024-03-11T05:01:20Z |
| publishDate | 2023-04-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Forests |
| spelling | doaj.art-aa6e04870c9c4fe2a6e7982950911c422023-11-17T19:17:49ZengMDPI AGForests1999-49072023-04-0114478210.3390/f14040782Sediment CO<sub>2</sub> Flux from a Mangrove in Southern China: Is It Controlled by Spatiotemporal, Biotic or Physical Factors?Siqi Nie0Xiaoguang Ouyang1Wenqing Wang2Zhenchang Zhu3Fen Guo4Zhifeng Yang5Shing Yip Lee6Research Centre of Ecology & Environment for Coastal Area and Deep Sea, Southern Marine Science and Engineering Guangdong Laboratory (Guangzhou), Guangzhou 511458, ChinaResearch Centre of Ecology & Environment for Coastal Area and Deep Sea, Southern Marine Science and Engineering Guangdong Laboratory (Guangzhou), Guangzhou 511458, ChinaKey Laboratory of the Ministry of Education for Coastal and Wetland Ecosystems, College of the Environment and Ecology, Xiamen University, Xiamen 361102, ChinaGuangdong Provincial Key Laboratory of Water Quality Improvement and Ecological Restoration for Watersheds, School of Ecology, Environment and Resources, Guangdong University of Technology, Guangzhou 510006, ChinaGuangdong Provincial Key Laboratory of Water Quality Improvement and Ecological Restoration for Watersheds, School of Ecology, Environment and Resources, Guangdong University of Technology, Guangzhou 510006, ChinaResearch Centre of Ecology & Environment for Coastal Area and Deep Sea, Southern Marine Science and Engineering Guangdong Laboratory (Guangzhou), Guangzhou 511458, ChinaSimon F. S. Li Marine Science Laboratory, School of Life Sciences, The Chinese University of Hong Kong, Shatin, Hong Kong, ChinaCarbon gas flux is important for studies on carbon dynamics in mangroves, but the controlling factors have not always been sufficiently understood. In this study, it is suggested that sediment carbon dioxide (CO<sub>2</sub>) fluxes in a natural mangrove in Southern China are controlled by tidal positions, seasons, species, the densities of crab burrows and pneumatophores, light conditions and sediment temperature. All these factors account for 51.47% variation in CO<sub>2</sub> flux from the sediment–air interface. CO<sub>2</sub> flux generally decreased along the tidal position from landward to seaward, and was higher in the dry season than in the wet season. CO<sub>2</sub> flux was highest in <i>Avicennia</i> marina (grey mangrove) in comparison with <i>Aegiceras corniculatum</i> (river mangrove) and <i>Kandelia obovata</i>. Pneumatophores and crab burrows promoted sediment CO<sub>2</sub> flux in the mangrove at a rate of 18.29 and 15.52 mmol m<sup>−2</sup> d<sup>−1</sup>. Dark flux was higher than light flux. Sediment temperature has a negative influence on CO<sub>2</sub> flux. Pneumatophores explain the most variation (13.9%) in CO<sub>2</sub> flux among the above factors. Our study suggests that the photosynthesis activity of microphytobenthos is an important factor driving the change of CO<sub>2</sub> emissions in this natural mangrove. This is of great significance for the study and for the full exploitation of the carbon sink potential of mangroves.https://www.mdpi.com/1999-4907/14/4/782mangroveCO<sub>2</sub> fluxpneumatophorecrab burrowtidal positionlight |
| spellingShingle | Siqi Nie Xiaoguang Ouyang Wenqing Wang Zhenchang Zhu Fen Guo Zhifeng Yang Shing Yip Lee Sediment CO<sub>2</sub> Flux from a Mangrove in Southern China: Is It Controlled by Spatiotemporal, Biotic or Physical Factors? Forests mangrove CO<sub>2</sub> flux pneumatophore crab burrow tidal position light |
| title | Sediment CO<sub>2</sub> Flux from a Mangrove in Southern China: Is It Controlled by Spatiotemporal, Biotic or Physical Factors? |
| title_full | Sediment CO<sub>2</sub> Flux from a Mangrove in Southern China: Is It Controlled by Spatiotemporal, Biotic or Physical Factors? |
| title_fullStr | Sediment CO<sub>2</sub> Flux from a Mangrove in Southern China: Is It Controlled by Spatiotemporal, Biotic or Physical Factors? |
| title_full_unstemmed | Sediment CO<sub>2</sub> Flux from a Mangrove in Southern China: Is It Controlled by Spatiotemporal, Biotic or Physical Factors? |
| title_short | Sediment CO<sub>2</sub> Flux from a Mangrove in Southern China: Is It Controlled by Spatiotemporal, Biotic or Physical Factors? |
| title_sort | sediment co sub 2 sub flux from a mangrove in southern china is it controlled by spatiotemporal biotic or physical factors |
| topic | mangrove CO<sub>2</sub> flux pneumatophore crab burrow tidal position light |
| url | https://www.mdpi.com/1999-4907/14/4/782 |
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