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DOI	10.1088/1748-9326/ab76da
	Role of vegetated coastal ecosystems as nitrogen and phosphorous filters and sinks in the coasts of Saudi Arabia
	Saderne V.; Cusack M.; Serrano O.; Almahasheer H.; Krishnakumar P.K.; Rabaoui L.; Qurban M.A.; Duarte C.M.
发表日期	2020
ISSN	17489318
卷号	15 期号:3
英文摘要	Vegetated coastal ecosystems along the Red Sea and Arabian Gulf coasts of Saudi Arabia thrive in an extremely arid and oligotrophic environment, with high seawater temperatures and salinity. Mangrove, seagrass and saltmarsh ecosystems have been shown to act as efficient sinks of sediment organic carbon, earning these vegetated ecosystems the moniker 'blue carbon' ecosystems. However, their role as nitrogen and phosphorus (N and P) sinks remains poorly understood. In this study, we examine the capacity of blue carbon ecosystems to trap and store nitrogen and phosphorous in their sediments in the central Red Sea and Arabian Gulf. We estimated the N and P stocks (in 0.2 m thick-sediments) and accumulation rates (for the last century based on 210Pb and for the last millennia based on 14C) in mangrove, seagrass and saltmarsh sediments from eight locations along the coast of Saudi Arabia (81 cores in total). The N and P stocks contained in the top 20 cm sediments ranged from 61 g N m-2 in Red Sea seagrass to 265 g N m-2 in the Gulf saltmarshes and from 70 g P m-2 in Red Sea seagrass meadows and mangroves to 58 g P m-2 in the Gulf saltmarshes. The short-term N and P accumulation rates ranged from 0.09 mg N cm-2 yr-1 in Red Sea seagrass to 0.38 mg N cm-2 yr-1 in Gulf mangrove, and from 0.027 mg P cm-2 yr-1 in the Gulf seagrass to 0.092 mg P cm-2 yr-1 in Red Sea mangroves. Short-term N and P accumulation rates were up to 10-fold higher than long-term accumulation rates, highlighting increasing sequestration of N and P over the past century, likely due to anthropogenic activities such as coastal development and wastewater inputs. © 2020 The Author(s). Published by IOP Publishing Ltd.
英文关键词	Arabian Gulf; blue carbon; mangrove; nitrogen; phosphorus; Red Sea; seagrass
语种	英语
scopus关键词	Nitrogen; Organic carbon; Phosphorus; Plants (botany); Sediments; Anthropogenic activity; Arabian Gulf; mangrove; Nitrogen and phosphorus; Oligotrophic environment; Red sea; Seagrasses; Sediment organic carbon; Ecosystems; carbon dioxide; carbon fixation; coastal development; coastal zone; filter; mangrove; nitrogen; phosphorus; seagrass; seawater; sequestration (chemistry); Indian Ocean; Persian Gulf; Red Sea [Indian Ocean]; Saudi Arabia; Rhizophoraceae
来源期刊	Environmental Research Letters
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/154197
作者单位	King Abdullah University of Science and Technology, Red Sea Research Centre, Thuwal, 23955-6900, Saudi Arabia; School of Science and Centre for Marine Ecosystems Research, Edith Cowan University, 270 Joondalup Drive, Joondalup, WA 6027, Australia; Department of Biology, College of Science, Imam Abdulrahman Bin Faisal University (IAU), Dammam, 31441-1982, Saudi Arabia; Marine Studies section, Center for Environment and Water, Research Institute, King Fahd University of Petroleum and Minerals (KFUPM), P. B. No. 391, Dhahran, 31261, Saudi Arabia; Geosciences Department, College of Petroleum Engineering and Geosciences, King Fahd University of Petroleum and Minerals (KFUPM), Dhahran, 31261, Saudi Arabia
推荐引用方式 GB/T 7714	Saderne V.,Cusack M.,Serrano O.,et al. Role of vegetated coastal ecosystems as nitrogen and phosphorous filters and sinks in the coasts of Saudi Arabia[J],2020,15(3).
APA	Saderne V..,Cusack M..,Serrano O..,Almahasheer H..,Krishnakumar P.K..,...&Duarte C.M..(2020).Role of vegetated coastal ecosystems as nitrogen and phosphorous filters and sinks in the coasts of Saudi Arabia.Environmental Research Letters,15(3).
MLA	Saderne V.,et al."Role of vegetated coastal ecosystems as nitrogen and phosphorous filters and sinks in the coasts of Saudi Arabia".Environmental Research Letters 15.3(2020).