Knowledge Resource Center for Ecological Environment in Arid Area
DOI | 10.1002/wat2.1691 |
The geomorphological and ecological functioning of the Silala River | |
Mao, Luca | |
通讯作者 | Mao, L |
来源期刊 | WILEY INTERDISCIPLINARY REVIEWS-WATER
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ISSN | 2049-1948 |
出版年 | 2024 |
卷号 | 11期号:1 |
英文摘要 | Perennial rivers in desert regions are relevant environments that tend to concentrate most ecosystem services and values, but are not as studied as much as intermittent and ephemeral rivers. This article reports on the main morphological and ecological features of the Silala River, a narrow permanent river in the arid region of Antofagasta, in the north of Chile. The study was motivated by the dispute between Chile and Bolivia concerning the status of the Silala as an international watercourse. Field surveys of sediment transport using traps and marked sediments (colored and tagged clasts) revealed that finer sediments are moved in higher percentages and for longer distances than coarser sediment fractions, which corroborates the size-selective nature of sediment dynamics in the river. The stream features the typical step/pool-plane bed morphology that is to be expected in an alluvial river with the given boundary conditions of slope, grain size of sediments, and lateral confinement. Furthermore, the Morphological Quality Index (MQI) classifies the river as featuring overall good morphological conditions and the river hosts an abundant population of rainbow trout (Oncorhynchus mykiss). Although this is a non-native species, their presence shows that the general conditions of the river (availability of food and presence of aquatic habitats) are able to sustain a population of resident fish. Overall, the morphological forms, geomorphic processes, and ecological features of the Silala River are typical of an alluvial stream with a permanent flow regime.This article is categorized under: Science of Water > Water and Environmental Change Human Water > Rights to Water Science of Water > Hydrological Processes Water and Life > Nature of Freshwater Ecosystems |
英文关键词 | fluvial geomorphology hydromorphology international watercourse invasive trouts sediment transport |
类型 | Review |
语种 | 英语 |
开放获取类型 | hybrid |
收录类别 | SCI-E |
WOS记录号 | WOS:001065472400001 |
WOS关键词 | MORPHOLOGICAL QUALITY INDEX ; BEDLOAD TRANSPORT ; ATACAMA DESERT ; SOUTHERN CHILE ; BED-LOAD ; GRAVEL ; SIZE ; RESTORATION ; PATTERNS ; INVASION |
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/2XILL650/405946 |
推荐引用方式 GB/T 7714 | Mao, Luca. The geomorphological and ecological functioning of the Silala River[J],2024,11(1). |
APA | Mao, Luca.(2024).The geomorphological and ecological functioning of the Silala River.WILEY INTERDISCIPLINARY REVIEWS-WATER,11(1). |
MLA | Mao, Luca."The geomorphological and ecological functioning of the Silala River".WILEY INTERDISCIPLINARY REVIEWS-WATER 11.1(2024). |
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