干旱区生态环境知识资源中心(Arid): Managing wetlands to solve the water crisis in the Katuma River ecosystem, Tanzania

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DOI	10.1016/j.ecohyd.2021.02.001
	Managing wetlands to solve the water crisis in the Katuma River ecosystem, Tanzania
	Elisa, Manase; Kihwele, Emilian; Wolanski, Eric; Birkett, Charon
通讯作者	Elisa, M (corresponding author), Univ Manchester, Dept Earth & Environm Sci, Manchester, Lancs, England. ; Elisa, M (corresponding author), Tanzania Natl Pk, POB 3134, Arusha, Tanzania.
来源期刊	ECOHYDROLOGY & HYDROBIOLOGY
ISSN	1642-3593
EISSN	2080-3397
出版年	2021
卷号	21 期号:2 页码:211-222
英文摘要	The formerly perennial Katuma River in western Tanzania starts in a protected forest, it then flows through irrigated rice farms before reaching Lake Katavi, a floodplain wetland whose outflow regulates the river flow through the Katavi National Park (KNP) down to its outlet at Lake Rukwa, which has no outlet. In recent years, due to overexploitation of water for irrigation, the Katuma River dried out for up to four months per year and this greatly degraded the KNP ecosystem, the siltation of river lead to flooding of the adjacent areas during heavy rains, and the water level of Lake Rukwa has decreased by 4 m since 1992 while its fishery yield and water quality also deteriorated. In 2016, a total of 46 illegal weirs were removed from the Katuma River upstream of KNP. Following that, the river zero-flow periods were reduced by two months and Lake Rukwa water level rose by 1 m. We suggest that the construction of a low V-notch weir at the outlet of the Lake Katavi wetlands would further reduce the Katuma River zero-flow periods by an additional month, thus returning the river nearly to its former perennial status. The enforcement of regulations governing the construction of irrigation weirs is essential. These ecohydrology solutions do not eliminate the threats, but they amplify the opportunities for sustainable development at the basin scale. This example of active governance of water resources at the basin scale can be applied throughout Tanzania and in semi-arid East Africa in general. (C) 2021 European Regional Centre for Ecohydrology of the Polish Academy of Sciences. Published by Elsevier B.V. All rights reserved.
英文关键词	Satellite altimetry river gauging rating curve water budget sustainability
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000640260200001
WOS关键词	SUB-SAHARAN AFRICA ; GREAT RUAHA RIVER ; ECOHYDROLOGY ; LAKE
WOS类目	Ecology ; 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/2XILL650/367863
作者单位	[Elisa, Manase] Univ Manchester, Dept Earth & Environm Sci, Manchester, Lancs, England; [Elisa, Manase; Kihwele, Emilian] Tanzania Natl Pk, POB 3134, Arusha, Tanzania; [Kihwele, Emilian] Univ Groningen, Inst Evolutionary Life Sci, Nijenborg 7, NL-9747 AG Groningen, Netherlands; [Wolanski, Eric] James Cook Univ, TropWATER, Townsville, Qld 4811, Australia; [Wolanski, Eric] James Cook Univ, Coll Sci & Engn, Townsville, Qld 4811, Australia; [Birkett, Charon] NASA, Goddard Space Flight Ctr, Geodesy & Geophys Lab, Greenbelt, MD USA
推荐引用方式 GB/T 7714	Elisa, Manase,Kihwele, Emilian,Wolanski, Eric,et al. Managing wetlands to solve the water crisis in the Katuma River ecosystem, Tanzania[J],2021,21(2):211-222.
APA	Elisa, Manase,Kihwele, Emilian,Wolanski, Eric,&Birkett, Charon.(2021).Managing wetlands to solve the water crisis in the Katuma River ecosystem, Tanzania.ECOHYDROLOGY & HYDROBIOLOGY,21(2),211-222.
MLA	Elisa, Manase,et al."Managing wetlands to solve the water crisis in the Katuma River ecosystem, Tanzania".ECOHYDROLOGY & HYDROBIOLOGY 21.2(2021):211-222.