Knowledge Resource Center for Ecological Environment in Arid Area
DOI | 10.1002/rra.3177 |
The importance of a small ephemeral tributary for fine sediment dynamics in a main-stem river | |
Marteau, B.1; Batalla, R. J.2,3,4; Vericat, D.2,5; Gibbins, C.1,6 | |
通讯作者 | Marteau, B. |
来源期刊 | RIVER RESEARCH AND APPLICATIONS |
ISSN | 1535-1459 |
EISSN | 1535-1467 |
出版年 | 2017 |
卷号 | 33期号:10页码:1564-1574 |
英文摘要 | Studies of ephemeral streams have focused mainly in arid and semi-arid regions. Such streams also occur widely in temperate regions, but much less is known about their influence on fluvial processes in main-stem rivers here. In this paper, we present evidence of the importance of a small ephemeral temperate stream for main-stem fine sediment dynamics. The paper focuses on a restoration project (River Ehen, North West England) which involved the reconnection of a headwater tributary to the main-stem river. We present data on suspended sediment transport 2years prior to and 2years following the reconnection. Despite the small size and non-perennial flow of the tributary, its reconnection resulted in an increase of 65% in the main-stem sediment yield. During both the pre-reconnection and post-reconnection periods, a higher proportion of the annual yield was conveyed during short events with relatively high suspended sediment concentrations. Following the reconnection, the magnitude and frequency of such events increased, primarily due to sediment being delivered from the tributary at times when main-stem flows were not elevated. Overall, the main-stem remains supply limited and so is highly dependent on sediment delivered from the tributary. The study helps stress that even non-perennial tributaries yielding only a small increase in catchment size (+1.2% in this case) can have a major influence on main-stem fluvial dynamics. Their role as sediment sources may be especially important where, as in the case of the Ehen, the main-stem is regulated and the system is otherwise starved of sediment. |
英文关键词 | channel reconnection ephemeral stream regulated river river restoration suspended fine sediment temperate region |
类型 | Article ; Proceedings Paper |
语种 | 英语 |
国家 | Scotland ; Spain ; Chile ; Malaysia |
收录类别 | SCI-E ; CPCI-S |
WOS记录号 | WOS:000417916000006 |
WOS关键词 | SUSPENDED SEDIMENT ; BED ; TRANSPORT ; EBRO ; DOWNSTREAM ; ISABENA ; CATCHMENT ; IMPACTS ; STORAGE ; BASIN |
WOS类目 | Environmental Sciences ; Water Resources |
WOS研究方向 | Environmental Sciences & Ecology ; Water Resources |
资源类型 | 期刊论文 |
条目标识符 | http://119.78.100.177/qdio/handle/2XILL650/202115 |
作者单位 | 1.Univ Aberdeen, NRI, Geosci, Aberdeen, Scotland; 2.Univ Lleida, Fluvial Dynam Res Grp RIUS, Lleida, Spain; 3.Catalan Inst Water Res ICRA, Girona, Spain; 4.Univ Austral Chile, Fac Forest Sci & Nat Resources, Valdivia, Chile; 5.Forest Technol Ctr Catalonia CTFC, Solsona, Spain; 6.Univ Nottingham Malaysia Campus, Sch Environm & Geog Sci, Jalan Broga, Semenyih, Selangor, Malaysia |
推荐引用方式 GB/T 7714 | Marteau, B.,Batalla, R. J.,Vericat, D.,et al. The importance of a small ephemeral tributary for fine sediment dynamics in a main-stem river[J],2017,33(10):1564-1574. |
APA | Marteau, B.,Batalla, R. J.,Vericat, D.,&Gibbins, C..(2017).The importance of a small ephemeral tributary for fine sediment dynamics in a main-stem river.RIVER RESEARCH AND APPLICATIONS,33(10),1564-1574. |
MLA | Marteau, B.,et al."The importance of a small ephemeral tributary for fine sediment dynamics in a main-stem river".RIVER RESEARCH AND APPLICATIONS 33.10(2017):1564-1574. |
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