干旱区生态环境知识资源中心(Arid): Faunal mediated carbon export from mangroves in an arid area

Arid

DOI	10.1016/j.scitotenv.2020.142677
	Faunal mediated carbon export from mangroves in an arid area
	Walton, M. E. M.; Al-Maslamani, I; Chatting, M.; Smyth, D.; Castillo, A.; Skov, M. W.; Le Vay, L.
通讯作者	Al-Maslamani, I (corresponding author), Qatar Univ, Off Res & Grad Studies, POB 2713, Doha, Qatar.
来源期刊	SCIENCE OF THE TOTAL ENVIRONMENT
ISSN	0048-9697
EISSN	1879-1026
出版年	2021
卷号	755
英文摘要	The outwelling paradigm argues that mangrove and saltmarsh wetlands export much excess production to downstream marine systems. However, outwelling is difficult to quantify and currently 40-50% of fixed carbon is unaccounted for. Some carbon is thought outwelled through mobile fauna, including fish, which visit and feed on mangrove produce during tidal inundation or early life stages before moving offshore, yet this pathway for carbon outwelling has never been quantified. We studied faunal carbon outwelling in three arid mangroves, where sharp isotopic gradients across the boundary between mangroves and down-stream systems permitted spatial differentiation of source of carbon in animal tissue. Stable isotope analysis (C, N, S) revealed 22-56% of the tissue of tidally migrating fauna was mangrove derived. Estimated consumption rates showed that 1.4% (38 kg C ha(-1) yr(-1)) of annual mangrove litter production was directly consumed by migratory fauna, with <1% potentially exported. We predict that the amount of faunally-outwelled carbon is likely to be highly correlated with biomass of migratory fauna. While this may vary globally, the measured migratory fauna biomass in these arid mangroves was within the range of observations for mangroves across diverse biogeographic ranges and environmental settings. Hence, this study provides a generalized prediction of the relatively weak contribution of faunal migration to carbon outwelling from mangroves and the current proposition, that the unaccounted-for 40-50% of mangrove C is exported as dissolved inorganic carbon, remains plausible. (C) 2020 The Authors. Published by Elsevier B.V.
英文关键词	Trophic relay Mangrove Carbon budget Outwelling hypothesis Mangrove litter Carbon flux Fish Food webs
类型	Article
语种	英语
开放获取类型	Green Published, hybrid, Green Submitted
收录类别	SCI-E
WOS记录号	WOS:000600537400035
WOS关键词	DISSOLVED ORGANIC-CARBON ; STABLE-ISOTOPE RATIOS ; RELATIVE IMPORTANCE ; COMMUNITY STRUCTURE ; PENAEID PRAWNS ; FOOD-WEB ; PRIMARY PRODUCERS ; METABOLIC-RATE ; SEAGRASS BEDS ; SALT-MARSH
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/2XILL650/348196
作者单位	[Walton, M. E. M.; Smyth, D.; Le Vay, L.] Bangor Univ, Ctr Appl Marine Sci, Coll Nat Sci, Menai Bridge LL59 5EY, Gwynedd, Wales; [Al-Maslamani, I] Qatar Univ, Off Res & Grad Studies, POB 2713, Doha, Qatar; [Chatting, M.; Castillo, A.] Qatar Univ, Environm Sci Ctr, POB 2713, Doha, Qatar; [Skov, M. W.] Bangor Univ, Sch Ocean Sci, Coll Nat Sci, Menai Bridge LL59 5EY, Gwynedd, Wales
推荐引用方式 GB/T 7714	Walton, M. E. M.,Al-Maslamani, I,Chatting, M.,et al. Faunal mediated carbon export from mangroves in an arid area[J],2021,755.
APA	Walton, M. E. M..,Al-Maslamani, I.,Chatting, M..,Smyth, D..,Castillo, A..,...&Le Vay, L..(2021).Faunal mediated carbon export from mangroves in an arid area.SCIENCE OF THE TOTAL ENVIRONMENT,755.
MLA	Walton, M. E. M.,et al."Faunal mediated carbon export from mangroves in an arid area".SCIENCE OF THE TOTAL ENVIRONMENT 755(2021).