干旱区生态环境知识资源中心(Arid): Responses of macroinvertebrate community metrics to urban pollution in semi-arid catchments around the city of Bulawayo, Zimbabwe

Arid

DOI	10.17159/wsa/2020.v46.i4.9071
	Responses of macroinvertebrate community metrics to urban pollution in semi-arid catchments around the city of Bulawayo, Zimbabwe
	Mwedzi, Tongayi; Siziba, Nqobizitha; Odume, Oghenekaro Nelson; Nyamazana, Eisen; Mabika, Innocent
通讯作者	Mwedzi, T
来源期刊	WATER SA
ISSN	0378-4738
EISSN	1816-7950
出版年	2020
卷号	46 期号:4 页码:583-592
英文摘要	River health monitoring is becoming increasingly important because of the anthropogenic activities that continue to impact on water quality and biodiversity of aquatic systems. This study aimed at identifying and evaluating macroinvertebrate community-based metrics that best respond to degradation due to urban pollution in riverine systems of Bulawayo, Zimbabwe. Data (physicochemical variables and macroinvertebrate specimens) were collected from 17 sites over 3 seasons. The sites were selected across an impairment gradient comprising less impacted, moderately impacted and heavily impacted sites. Heavily impacted sites had the highest levels of total dissolved solids, conductivity, salinity, turbidity, total phosphates, total nitrogen, chemical oxygen demand and sedimentary zinc. Dissolved oxygen was significantly highest in less impacted sites. Sensitivity of 24 macroinvertebrate metrics to this impairment gradient were assessed. A total of 5 metrics were identified as sensitive to modifications in water quality due to urban pollution. These metrics were taxon richness, South African Scoring System (SASS5) score, average score per taxon (ASPT), percentage collectors and percentage scrapers. The selected metrics will be useful for the monitoring and assessment of the studied riverine systems and can be further integrated into one multimetric index that combines a range of indices and allows the integration of ecological information for better management of aquatic ecosystems in this region.
英文关键词	multimetric system biomonitoring water quality pollution
类型	Article
语种	英语
开放获取类型	gold
收录类别	SCI-E
WOS记录号	WOS:000586456700004
WOS关键词	WATER-QUALITY ; LAND-USE ; BENTHIC MACROINVERTEBRATES ; MULTIMETRIC INDEX ; BIOTIC INTEGRITY ; MUKUVISI RIVER ; LAKE KARIBA ; MARA RIVER ; STREAMS ; ASSEMBLAGES
WOS类目	Water Resources
WOS研究方向	Water Resources
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/327353
作者单位	[Mwedzi, Tongayi; Nyamazana, Eisen; Mabika, Innocent] Chinhoyi Univ Technol, Dept Wildlife Ecol & Conservat, P Bag 7724, Chinhoyi, Zimbabwe; [Siziba, Nqobizitha] Chinhoyi Univ Technol, Dept Biol, P Bag 7724, Chinhoyi, Zimbabwe; [Odume, Oghenekaro Nelson] Rhodes Univ, Inst Water Res, Unilever Ctr Environm Water Qual, POB 94, ZA-6140 Makhanda, South Africa
推荐引用方式 GB/T 7714	Mwedzi, Tongayi,Siziba, Nqobizitha,Odume, Oghenekaro Nelson,et al. Responses of macroinvertebrate community metrics to urban pollution in semi-arid catchments around the city of Bulawayo, Zimbabwe[J],2020,46(4):583-592.
APA	Mwedzi, Tongayi,Siziba, Nqobizitha,Odume, Oghenekaro Nelson,Nyamazana, Eisen,&Mabika, Innocent.(2020).Responses of macroinvertebrate community metrics to urban pollution in semi-arid catchments around the city of Bulawayo, Zimbabwe.WATER SA,46(4),583-592.
MLA	Mwedzi, Tongayi,et al."Responses of macroinvertebrate community metrics to urban pollution in semi-arid catchments around the city of Bulawayo, Zimbabwe".WATER SA 46.4(2020):583-592.