干旱区生态环境知识资源中心(Arid): An integrated approach for evaluating freshwater ecosystems under the influence of high salinity: a case study of Manchar Lake in Pakistan

Arid

DOI	10.1007/s10661-023-11917-z
	An integrated approach for evaluating freshwater ecosystems under the influence of high salinity: a case study of Manchar Lake in Pakistan
	Imran, Uzma; Ullah, Asmat; Mahar, Rasool Bux; Shaikh, Kaleemullah; Khokhar, Waheed Ali; Weidhaas, Jennifer
通讯作者	Imran, U
来源期刊	ENVIRONMENTAL MONITORING AND ASSESSMENT
ISSN	0167-6369
EISSN	1573-2959
出版年	2023
卷号	195 期号:11
英文摘要	Manchar Lake, Pakistan's biggest lake in the arid zone, faces human-induced salinity issues. This study investigated its effects on the multifaceted ecosystem services, including serving as a source of drinking and irrigation water and aquatic health through assessing fish diversity and characteristics. Analyses of 189 water samples from 21 sites revealed spatiotemporal variations in major ions contributing to lake water salinity. The study assessed water suitability for drinking and agriculture using the water quality index (WQI), sodium adsorption ratio (SAR), magnesium hazard (MH), sodium percent (Na%), and Kelly's ratio (KR). The WQI, ranging from 141 to 408, indicated that the lake water was unfit for drinking. In some seasons, such as the pre-monsoon period, the lake water was deemed unsuitable for irrigation due to high SAR values (18 +/- 4 g/L, average +/- standard deviation), consistently rising MH values exceeding 66 in all seasons and elevated sodium percentages surpassing 66% in both the pre-monsoon and monsoon seasons. The KR remained acceptable (averaging 0.8 to 2.5) in all seasons. Fish health in highly saline conditions was assessed using data from interviews, focus group discussions, and fish sampling (1684 fish from 10 sites). Results depicted that high salt contamination severely impacted fish length and weight. The study found low richness (Simpson's biodiversity: 0.697 and Shannon Weaver: 1.51) and evenness (Pielou's index: 0.48) among the fish populations. Since 1998, Manchar Lake has seen a decline in fish varieties from 32 to 23, with changes in fish species' feeding habits. To improve lake water quality, the study recommends diverting saline water to the sea before and after the monsoon season while utilizing freshwater from alternative sources to fill any water deficit.
英文关键词	Lake water salinity Arid region Major ions Indicator species Water quality index
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:001100117700005
WOS关键词	QUALITY INDEX ; LENGTH-WEIGHT ; RESPONSES ; IMPACTS ; GROWTH ; SALTS ; RIVER ; AREA
WOS类目	Environmental Sciences
WOS研究方向	Environmental Sciences & Ecology
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/396189
推荐引用方式 GB/T 7714	Imran, Uzma,Ullah, Asmat,Mahar, Rasool Bux,et al. An integrated approach for evaluating freshwater ecosystems under the influence of high salinity: a case study of Manchar Lake in Pakistan[J],2023,195(11).
APA	Imran, Uzma,Ullah, Asmat,Mahar, Rasool Bux,Shaikh, Kaleemullah,Khokhar, Waheed Ali,&Weidhaas, Jennifer.(2023).An integrated approach for evaluating freshwater ecosystems under the influence of high salinity: a case study of Manchar Lake in Pakistan.ENVIRONMENTAL MONITORING AND ASSESSMENT,195(11).
MLA	Imran, Uzma,et al."An integrated approach for evaluating freshwater ecosystems under the influence of high salinity: a case study of Manchar Lake in Pakistan".ENVIRONMENTAL MONITORING AND ASSESSMENT 195.11(2023).