Articles | Volume 23, issue 20
https://doi.org/10.5194/bg-23-7309-2026
https://doi.org/10.5194/bg-23-7309-2026
Research article
 | 
19 Oct 2026
Research article |  | 19 Oct 2026

Linking sea–air and benthic methane fluxes across seasons in a tropical seagrass meadow of Taiwan

Hsiao-Chun Tseng, Agnes Sonya Meilani Lumban Gaol, Fu-Hsuen Lin, Jian-Jhih Chen, and Wen-Chen Chou

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Cited articles

Al-Haj, A. N., Chidsey, T., and Fulweiler, R. W.: Two temperate seagrass meadows are negligible sources of methane and nitrous oxide, Limnol. Oceanogr., 67, https://doi.org/10.1002/lno.12250, 2022. 
Alongi, D. M., Trott, L. A., Undu, M. C., and Tirendi, F.: Benthic microbial metabolism in seagrass meadows along a carbonate gradient in Sulawesi, Indonesia, Aquat. Microb. Ecol., 51, 141–152, https://doi.org/10.3354/ame01191, 2008. 
Arndt, S., Jørgensen, B. B., LaRowe, D. E., Middelburg, J. J., Pancost, R. D., and Regnier, P.: Quantifying the degradation of organic matter in marine sediments: A review and synthesis, Earth-Sci. Rev., 123, 53–86, https://doi.org/10.1016/j.earscirev.2013.02.008, 2013. 
Asplund, M. E., Bonaglia, S., Boström, C., Dahl, M., Deyanova, D., Gagnon, K., Gullström, M., Holmer, M., and Björk, M.: Methane Emissions From Nordic Seagrass Meadow Sediments, Frontiers in Marine Science, 8, https://doi.org/10.3389/fmars.2021.811533, 2022. 
Bahlmann, E., Weinberg, I., Lavrič, J. V., Eckhardt, T., Michaelis, W., Santos, R., and Seifert, R.: Tidal controls on trace gas dynamics in a seagrass meadow of the Ria Formosa lagoon (southern Portugal), Biogeosciences, 12, 1683–1696, https://doi.org/10.5194/bg-12-1683-2015, 2015. 
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Short summary
Seagrass meadows help mitigate climate change by removing carbon dioxide from the atmosphere and storing carbon in the seabed. However, they can also release methane. We found that seagrass sediments released methane more consistently and at higher rates than nearby bare sand, while bare sand sediments showed occasional methane pulses following storms. Most sediment-produced methane was likely transported laterally or removed through microbial oxidation.
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