干旱区生态环境知识资源中心(Arid): The Assessment of Phytoplankton Dynamics in Two Reservoirs in Southern Africa with Special Reference to Water Abstraction for Inter-Basin Transfers and Potable Water Production

Arid

DOI	10.3390/w13213045
	The Assessment of Phytoplankton Dynamics in Two Reservoirs in Southern Africa with Special Reference to Water Abstraction for Inter-Basin Transfers and Potable Water Production
	Sirunda, Johannes; Oberholster, Paul; Wolfaardt, Gideon; Botes, Marelize; Truter, Christoff
通讯作者	Sirunda, J (corresponding author), Namibia Water Corp, Res & Dev Dept, 176 Iscor St, Windhoek 13389, Namibia. ; Sirunda, J (corresponding author), Stellenbosch Univ, Water Inst, Fac Sci, ZA-7600 Matieland, South Africa.
来源期刊	WATER
EISSN	2073-4441
出版年	2021
卷号	13 期号:21
英文摘要	Toxic phytoplankton in the aquatic ecosystems are dynamic, affecting water quality. It remains unclear as to how possible toxic phytoplankton assemblages vary vertically and temporally in Swakoppoort and Von Bach dams, located in a dry subtropical desert region in central Namibia. The following variables were analyzed: pH, Secchi depths, turbidity, water temperature, total phosphorus, orthophosphate, chlorophyll-a, phytoplankton cells, and water depths. Cyanobacteria dominated the phytoplankton community in the autumn, winter and spring (dry) and summer (wet) seasons, at all the depth ranges in both dams. Microcystis dominated the vertical and temporal dynamics, followed by Dolichospermum. In the dry seasons, higher cyanobacteria cell numbers were observed in comparison to the rainy season in both dams. Spring blooms of cyanobacteria were evident in the Von Bach Dam while autumn and spring cyanobacteria blooms were observed in the Swakoppoort Dam. In the Swakoppoort Dam, the preferable depth ranges for toxic cyanobacteria species were at 5 to 10 m while in the Von Bach Dam at 0 to 5 m range. The findings of the current study indicate that the traditional selective withdrawal of water in the two dams should be performed with vertical and temporal dynamics of possible toxic cyanobacteria accounted for to aid the abstraction of water with the lowest possible toxic phytoplankton numbers, which could lower the public health risk.
英文关键词	cyanobacteria water quality depth dynamic lake diversity seasons semi-arid subtropical water abstraction
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:000722355900001
WOS关键词	SEASONAL DYNAMICS ; TROPHIC STATE ; HARTBEESPOORT DAM ; SEMIARID REGION ; LARGE SHALLOW ; LAKE ; CYANOBACTERIA ; CLIMATE ; CHLOROPHYLL ; EUTROPHICATION
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/2XILL650/373800
作者单位	[Sirunda, Johannes] Namibia Water Corp, Res & Dev Dept, 176 Iscor St, Windhoek 13389, Namibia; [Sirunda, Johannes; Wolfaardt, Gideon; Botes, Marelize] Stellenbosch Univ, Water Inst, Fac Sci, ZA-7600 Matieland, South Africa; [Oberholster, Paul] Univ Free State, Fac Nat & Agr Sci, Ctr Environm Management, ZA-9300 Bloemfontein, South Africa; [Truter, Christoff] Univ Pretoria, Fac Vet Sci, Dept Paraclin Sci, ZA-0110 Pretoria, South Africa
推荐引用方式 GB/T 7714	Sirunda, Johannes,Oberholster, Paul,Wolfaardt, Gideon,et al. The Assessment of Phytoplankton Dynamics in Two Reservoirs in Southern Africa with Special Reference to Water Abstraction for Inter-Basin Transfers and Potable Water Production[J],2021,13(21).
APA	Sirunda, Johannes,Oberholster, Paul,Wolfaardt, Gideon,Botes, Marelize,&Truter, Christoff.(2021).The Assessment of Phytoplankton Dynamics in Two Reservoirs in Southern Africa with Special Reference to Water Abstraction for Inter-Basin Transfers and Potable Water Production.WATER,13(21).
MLA	Sirunda, Johannes,et al."The Assessment of Phytoplankton Dynamics in Two Reservoirs in Southern Africa with Special Reference to Water Abstraction for Inter-Basin Transfers and Potable Water Production".WATER 13.21(2021).