干旱区生态环境知识资源中心(Arid): Sandbar Breaches Control of the Biogeochemistry of a Micro-Estuary

Arid

DOI	10.3389/fmars.2019.00224
	Sandbar Breaches Control of the Biogeochemistry of a Micro-Estuary
	Suari, Yair 1; Amit, Tal 1; Gilboa, Merav 1; Sade, Tal 1; Krom, Michael D.2,3; Gafny, Sarig 1; Topaz, Tom 4; Yahel, Gitai 1
通讯作者	Suari, Yair
来源期刊	FRONTIERS IN MARINE SCIENCE
EISSN	2296-7745
出版年	2019
卷号	6
英文摘要	Micro-estuaries in semi-arid areas, despite their small size (shallow depth of a few meters, length of a few kilometers, and a surface area of less than 1 km(2)) are important providers of ecosystem services. Despite their high abundance, tendency to suffer from eutrophication and vulnerability to other anthropogenic impacts, such systems are among the least studied water bodies in the world. In low tidal amplitude regions, micro-estuaries often have limited rate of sea-river water exchange, somewhat similar to fjord circulation, caused by a shallow sandbar forming at the coastline. The long-term study, we report here was inspired by the idea that, due to their small size and low discharges regime, relatively small interventions can have large effects on micro-estuaries. We used a stationary array of sensors and detailed monthly water sampling to characterize the Alexander estuary, a typical micro-estuary in the S.E. Mediterranean, and to identify the main stress factors in this aquatic ecosystem. The Alexander micro-estuary is stratified throughout the year with median bottom salinity of 18 PSU. Prolonged periods of hypoxia were identified as the main stress factor. Those were alleviated by breaching of the sandbar at the estuary mouth by sea-waves or stormwater runoff events (mostly during winter) that flush the anoxic bottom water. Analysis of naturally occurring sandbar breaches, and an artificial breach experiment indicate that the current oxygen consumption rate of the Alexander micro-estuary is too high to consider sandbar breaches as a remedy for the anoxia. Nevertheless, it demonstrates and provides the tools to assess the feasibility of small-scale interventions to control micro-estuaries hydrology and biogeochemistry.
英文关键词	eutrophication anthropogenic pollution coastal stream Mediterranean sandbar sill estuaries
类型	Article
语种	英语
国家	Israel ; England
开放获取类型	gold
收录类别	SCI-E
WOS记录号	WOS:000467018600001
WOS关键词	NUTRIENT INPUTS ; FRESH-WATER ; DYNAMICS ; MARINE ; RIVER ; EUTROPHICATION ; DEFINITIONS ; LAGOONS ; STREAMS ; ISRAEL
WOS类目	Environmental Sciences ; Marine & Freshwater Biology
WOS研究方向	Environmental Sciences & Ecology ; Marine & Freshwater Biology
来源机构	Hebrew University of Jerusalem
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/215775
作者单位	1.Ruppin Acad Ctr, Sch Marine Sci, Michmoret, Israel; 2.Univ Haifa, Chamey Sch Marine Sci, Dept Marine Biol, Monis Kahn Marine Res Stn, Haifa, Israel; 3.Univ Leeds, Fac Environm, Sch Earth & Environm, Leeds, W Yorkshire, England; 4.Hebrew Univ Jerusalem, Robert H Smith Fac Agr Food & Environm, Dept Soil & Water Sci, Rehovot, Israel
推荐引用方式 GB/T 7714	Suari, Yair,Amit, Tal,Gilboa, Merav,et al. Sandbar Breaches Control of the Biogeochemistry of a Micro-Estuary[J]. Hebrew University of Jerusalem,2019,6.
APA	Suari, Yair.,Amit, Tal.,Gilboa, Merav.,Sade, Tal.,Krom, Michael D..,...&Yahel, Gitai.(2019).Sandbar Breaches Control of the Biogeochemistry of a Micro-Estuary.FRONTIERS IN MARINE SCIENCE,6.
MLA	Suari, Yair,et al."Sandbar Breaches Control of the Biogeochemistry of a Micro-Estuary".FRONTIERS IN MARINE SCIENCE 6(2019).