干旱区生态环境知识资源中心(Arid): Lateral carbon fluxes and CO2 evasion from a subtropical mangrove-seagrass-coral continuum

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DOI	10.1016/j.scitotenv.2020.142190
	Lateral carbon fluxes and CO2 evasion from a subtropical mangrove-seagrass-coral continuum
	Akhand, Anirban; Watanabe, Kenta; Chanda, Abhra; Tokoro, Tatsuki; Chakraborty, Kunal; Moki, Hirotada; Tanaya, Toko; Ghosh, Jayashree; Kuwae, Tomohiro
通讯作者	Akhand, A
来源期刊	SCIENCE OF THE TOTAL ENVIRONMENT
ISSN	0048-9697
EISSN	1879-1026
出版年	2021
卷号	752
英文摘要	Mangrove, seagrass, and coral habitats often lie adjacent to each other in the tropics and subtropics. Lateral carbon fluxes and their consecutive effects on CO2 dynamics and air-water fluxes along the ecosystem continuum are often overlooked. We measured the partial pressure of CO2 in water and associated biogeochemical parameters with a high temporal resolution and estimated air-water CO2 fluxes along the ecosystem continuum. Their lateral fluxes were estimated by using a biogeochemical mass-balance model. The results showed that the waters surrounding mangrove, seagrass, and coral habitats acted as a strong, moderate, and weak source of atmospheric CO2, respectively. The mangrove zone acted as a net source for TAlk, DIC, and DOC, but as a net sink for POC. The contribution of riverine and mangrove-derived OM was substantially high in mangrove sediment, indicating that net transport of POC towards the coastal sea was suppressed by the sediment trapping function of mangroves. The seagrass zone acted as a net source of all carbon forms and TAlk, whereas the coral zone acted as a net sink of TAlk, DIC, and DOC. The lateral transport of carbon from mangroves and rivers offset atmospheric CO2 uptake in the seagrass zone. DOC degradation might increase DIC, and other biogeochemical processes facilitate the functioning of the coral zone as a DOC sink. However, as a result of DIC uptake by autotrophs, mainly in the coral zone, the whole ecosystem continuum was a net sink of DIC and atmospheric CO2 evasion was lowered. We conclude that lateral transport of riverine and mangrove-derived DIC, TAlk, and DOC affect CO2 dynamics and air-water fluxes in seagrass and coral ecosystems. Thus, studies of lateral carbon fluxes at local and regional scales can improve global carbon budget estimates. (C) 2020 The Authors. Published by Elsevier B.V.
英文关键词	Lateral carbon flux Air-water CO2 flux Mangrove Seagrass Coral
类型	Article
语种	英语
开放获取类型	hybrid
收录类别	SCI-E
WOS记录号	WOS:000588243900126
WOS关键词	DISSOLVED ORGANIC-CARBON ; INORGANIC CARBON ; STABLE-ISOTOPE ; OCEAN ACIDIFICATION ; SEAWATER PCO(2) ; ISHIGAKI ISLAND ; FRINGING-REEF ; ARID MANGROVE ; GAS-EXCHANGE ; TIDAL CREEK
WOS类目	Environmental Sciences
WOS研究方向	Environmental Sciences & Ecology
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/327980
作者单位	[Akhand, Anirban; Watanabe, Kenta; Tokoro, Tatsuki; Moki, Hirotada; Tanaya, Toko; Kuwae, Tomohiro] Port & Airport Res Inst, Coastal & Estuarine Environm Res Grp, 3-1-1 Nagase, Yokosuka, Kanagawa 2390826, Japan; [Chanda, Abhra] Jadavpur Univ, Sch Oceanog Studies, 188 Raja SC Mullick Rd, Kolkata 700032, W Bengal, India; [Tokoro, Tatsuki] Ctr Global Environm Res CGER, Natl Inst Environm Studies, Off Atmospher & Ocean Monitoring, 16-2 Onogawa, Tsukuba, Ibaraki 3058506, Japan; [Chakraborty, Kunal; Ghosh, Jayashree] Minist Earth Sci, Indian Natl Ctr Ocean Informat Serv, Hyderabad 500090, India; [Ghosh, Jayashree] Kerala Univ Fisheries & Ocean Studies, Sch Ocean Sci & Technol, Kochi 682506, Kerala, India
推荐引用方式 GB/T 7714	Akhand, Anirban,Watanabe, Kenta,Chanda, Abhra,et al. Lateral carbon fluxes and CO2 evasion from a subtropical mangrove-seagrass-coral continuum[J],2021,752.
APA	Akhand, Anirban.,Watanabe, Kenta.,Chanda, Abhra.,Tokoro, Tatsuki.,Chakraborty, Kunal.,...&Kuwae, Tomohiro.(2021).Lateral carbon fluxes and CO2 evasion from a subtropical mangrove-seagrass-coral continuum.SCIENCE OF THE TOTAL ENVIRONMENT,752.
MLA	Akhand, Anirban,et al."Lateral carbon fluxes and CO2 evasion from a subtropical mangrove-seagrass-coral continuum".SCIENCE OF THE TOTAL ENVIRONMENT 752(2021).