Implication of Macroalgal Bloom to Soil Organic Carbon Stock in Seagrass Meadows - A Case Study in South Hainan, China
The adverse impact of macroalgal blooms associated with nutrient enrichment on seagrass habitats and carbon storage potential is an ecological concern. In the present study, the soil carbon stock and sources were compared between a seagrass meadow where a serious macroalgal bloom occurred (site M) a...
| Main Authors: | , , , , , , , , , |
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| Format: | Article |
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Frontiers Media S.A.
2022-05-01
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| Series: | Frontiers in Marine Science |
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| Online Access: | https://www.frontiersin.org/articles/10.3389/fmars.2022.870228/full |
| _version_ | 1811233413904990208 |
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| author | Shunyang Chen Shunyang Chen Shiquan Chen Bin Chen Bin Chen Bin Chen Zhongjie Wu Wenshuo An Wenshuo An Lizhen Luo Jing Wang Limei Xie Jing Zhang Guangcheng Chen Guangcheng Chen Guangcheng Chen |
| author_facet | Shunyang Chen Shunyang Chen Shiquan Chen Bin Chen Bin Chen Bin Chen Zhongjie Wu Wenshuo An Wenshuo An Lizhen Luo Jing Wang Limei Xie Jing Zhang Guangcheng Chen Guangcheng Chen Guangcheng Chen |
| author_sort | Shunyang Chen |
| collection | DOAJ |
| description | The adverse impact of macroalgal blooms associated with nutrient enrichment on seagrass habitats and carbon storage potential is an ecological concern. In the present study, the soil carbon stock and sources were compared between a seagrass meadow where a serious macroalgal bloom occurred (site M) and an adjacent site without apparent macroalgae (site R) in a nutrient-enriched lagoon in South Hainan Island, China, to test whether macroalgal blooms associated with nutrient enrichment would impact the soil carbon in seagrass meadows. The soil organic carbon (OC) and total nitrogen contents in the top 30 cm at site M were significantly lower than those at site R. The soil OC stocks (top 30 cm) were 3.4 and 5.4 Mg C ha-1 at site M and site R, respectively, and no difference was observed between sampling stations with different distances offshore at either site. Soil δ13C was more enriched and closer to the δ13C of seagrass tissues at site R than at site M. Bayesian stable isotope mixing model analyses suggested that seagrass-derived material contributed ~50% to soil OC at site R, while at site M, the contribution was reduced to ~25%. The results suggested that macroalgal blooms associated with nutrient enrichment could drive the loss of seagrass-derived OC and the OC stock in the soil, which is worthy of full attention for blue carbon conservation. |
| first_indexed | 2024-04-12T11:20:02Z |
| format | Article |
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| institution | Directory Open Access Journal |
| issn | 2296-7745 |
| language | English |
| last_indexed | 2024-04-12T11:20:02Z |
| publishDate | 2022-05-01 |
| publisher | Frontiers Media S.A. |
| record_format | Article |
| series | Frontiers in Marine Science |
| spelling | doaj.art-4be9b50ff9584e07ae330a626aae963e2022-12-22T03:35:24ZengFrontiers Media S.A.Frontiers in Marine Science2296-77452022-05-01910.3389/fmars.2022.870228870228Implication of Macroalgal Bloom to Soil Organic Carbon Stock in Seagrass Meadows - A Case Study in South Hainan, ChinaShunyang Chen0Shunyang Chen1Shiquan Chen2Bin Chen3Bin Chen4Bin Chen5Zhongjie Wu6Wenshuo An7Wenshuo An8Lizhen Luo9Jing Wang10Limei Xie11Jing Zhang12Guangcheng Chen13Guangcheng Chen14Guangcheng Chen15Third Institute of Oceanography, Ministry of Natural Resources, Xiamen, ChinaObservation and Research Station of Coastal Wetland Ecosystem in Beibu Gulf, Ministry of Natural Resources, Beihai, ChinaHainan Academy of Ocean and Fisheries Sciences, Haikou, ChinaThird Institute of Oceanography, Ministry of Natural Resources, Xiamen, ChinaObservation and Research Station of Coastal Wetland Ecosystem in Beibu Gulf, Ministry of Natural Resources, Beihai, ChinaKey Laboratory of Marine Ecological Conservation and Restoration, Ministry of Natural Resources, Xiamen, ChinaHainan Academy of Ocean and Fisheries Sciences, Haikou, ChinaThird Institute of Oceanography, Ministry of Natural Resources, Xiamen, ChinaObservation and Research Station of Coastal Wetland Ecosystem in Beibu Gulf, Ministry of Natural Resources, Beihai, ChinaHainan Academy of Ocean and Fisheries Sciences, Haikou, ChinaSociety of Entrepreneurs and Ecology Foundation, Beijing, ChinaKey Laboratory of the Ministry of Education for Coastal and Wetland Ecosystems, Xiamen University, Xiamen, ChinaSociety of Entrepreneurs and Ecology Foundation, Beijing, ChinaThird Institute of Oceanography, Ministry of Natural Resources, Xiamen, ChinaObservation and Research Station of Coastal Wetland Ecosystem in Beibu Gulf, Ministry of Natural Resources, Beihai, ChinaKey Laboratory of Marine Ecological Conservation and Restoration, Ministry of Natural Resources, Xiamen, ChinaThe adverse impact of macroalgal blooms associated with nutrient enrichment on seagrass habitats and carbon storage potential is an ecological concern. In the present study, the soil carbon stock and sources were compared between a seagrass meadow where a serious macroalgal bloom occurred (site M) and an adjacent site without apparent macroalgae (site R) in a nutrient-enriched lagoon in South Hainan Island, China, to test whether macroalgal blooms associated with nutrient enrichment would impact the soil carbon in seagrass meadows. The soil organic carbon (OC) and total nitrogen contents in the top 30 cm at site M were significantly lower than those at site R. The soil OC stocks (top 30 cm) were 3.4 and 5.4 Mg C ha-1 at site M and site R, respectively, and no difference was observed between sampling stations with different distances offshore at either site. Soil δ13C was more enriched and closer to the δ13C of seagrass tissues at site R than at site M. Bayesian stable isotope mixing model analyses suggested that seagrass-derived material contributed ~50% to soil OC at site R, while at site M, the contribution was reduced to ~25%. The results suggested that macroalgal blooms associated with nutrient enrichment could drive the loss of seagrass-derived OC and the OC stock in the soil, which is worthy of full attention for blue carbon conservation.https://www.frontiersin.org/articles/10.3389/fmars.2022.870228/fullsoil carbon stocksoil δ13Ctotal nitrogencarbon sourcesEnhalus acoroidespriming effect |
| spellingShingle | Shunyang Chen Shunyang Chen Shiquan Chen Bin Chen Bin Chen Bin Chen Zhongjie Wu Wenshuo An Wenshuo An Lizhen Luo Jing Wang Limei Xie Jing Zhang Guangcheng Chen Guangcheng Chen Guangcheng Chen Implication of Macroalgal Bloom to Soil Organic Carbon Stock in Seagrass Meadows - A Case Study in South Hainan, China Frontiers in Marine Science soil carbon stock soil δ13C total nitrogen carbon sources Enhalus acoroides priming effect |
| title | Implication of Macroalgal Bloom to Soil Organic Carbon Stock in Seagrass Meadows - A Case Study in South Hainan, China |
| title_full | Implication of Macroalgal Bloom to Soil Organic Carbon Stock in Seagrass Meadows - A Case Study in South Hainan, China |
| title_fullStr | Implication of Macroalgal Bloom to Soil Organic Carbon Stock in Seagrass Meadows - A Case Study in South Hainan, China |
| title_full_unstemmed | Implication of Macroalgal Bloom to Soil Organic Carbon Stock in Seagrass Meadows - A Case Study in South Hainan, China |
| title_short | Implication of Macroalgal Bloom to Soil Organic Carbon Stock in Seagrass Meadows - A Case Study in South Hainan, China |
| title_sort | implication of macroalgal bloom to soil organic carbon stock in seagrass meadows a case study in south hainan china |
| topic | soil carbon stock soil δ13C total nitrogen carbon sources Enhalus acoroides priming effect |
| url | https://www.frontiersin.org/articles/10.3389/fmars.2022.870228/full |
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