干旱区生态环境知识资源中心(Arid): Environmental factors associated with toxic cyanobacterial blooms across 20 drinking water reservoirs in a semi-arid region of Brazil

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DOI	10.1016/j.hal.2019.05.006
	Environmental factors associated with toxic cyanobacterial blooms across 20 drinking water reservoirs in a semi-arid region of Brazil
	Barros, Mario U. G.1,2; Wilson, Alan E.2; Leitao, Joao I. R.1; Pereira, Silvano P.3; Buley, Riley P.2; Fernandez-Figueroa, Edna G.2; Capelo-Neto, Jose 1
通讯作者	Wilson, Alan E.
来源期刊	HARMFUL ALGAE
ISSN	1568-9883
EISSN	1878-1470
出版年	2019
卷号	86 页码:128-137
英文摘要	Cyanobacteria are known to produce a wide variety of bioactive, toxic secondary metabolites generally described as hepatotoxins, neurotoxins, cytotoxins, or dermatoxins. In Brazil, the regular monitoring of cyanobacterial toxins has intensified after the death of 65 patients in a hemodialysis clinic in Caruaru in the state of Pernambuco due to microcystin exposure. The primary objective of this study was to use multivariate statistics that incorporated environmental parameters (both biotic and abiotic) to forecast blooms of cyanobacteria and their toxic secondary metabolites in 20 drinking water reservoirs managed by the Water Treatment Company of Ceara (CAGECE) in the semi-arid region of Ceara, Brazil. Across four years (January 2013 to January 2017), 114 different phytoplankton taxa were identified, including 24 cyanobacterial taxa. In general, Ceara reservoirs were dominated by cyanobacteria due to eutrophication but also because of the dry and warm climate found throughout the region. Interestingly, specific cyanobacterial taxa were influenced by different biotic and abiotic factors. For example, nitrogen-to-phosphorus (N:P) and evaporation were positively related to saxitoxin-producing taxa, especially Raphidiopsis raciborskii, while temperature, electrical conductivity, total phosphorus, and transparency (measured as Secchi depth) were positively associated with microcystin-producing taxa, such as Microcystis aeruginosa. Climate forecasts predict higher evaporation and temperatures in the semi-arid Ceara region, which will likely magnify droughts and water scarcity as well as promote toxic cyanobacterial blooms in reservoirs in the future. Therefore, understanding the factors associated with algal blooms dominated by specific taxa is paramount for water resource management.
英文关键词	Blue-green algae Nutrients Eutrophication Climate change
类型	Article
语种	英语
国家	Brazil ; USA
收录类别	SCI-E
WOS记录号	WOS:000484874200013
WOS关键词	CYLINDROSPERMOPSIS-RACIBORSKII ; APHANIZOMENON-OVALISPORUM ; GLOBAL EXPANSION ; CLIMATE-CHANGE ; FRESH-WATER ; NITROGEN ; DOMINANCE ; GROWTH ; 2-METHYLISOBORNEOL ; IDENTIFICATION
WOS类目	Marine & Freshwater Biology
WOS研究方向	Marine & Freshwater Biology
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/216113
作者单位	1.Univ Fed Ceara, Dept Hydraul & Environm Engn, Block 713,Campus Pici, Fortaleza, Ceara, Brazil; 2.Auburn Univ, Sch Fisheries Aquaculture & Aquat Sci, Auburn, AL 36849 USA; 3.Water Treatment Co Ceara, CAGECE, 1030,Lauro Vieira Chaves Av, Fortaleza, Ceara, Brazil
推荐引用方式 GB/T 7714	Barros, Mario U. G.,Wilson, Alan E.,Leitao, Joao I. R.,et al. Environmental factors associated with toxic cyanobacterial blooms across 20 drinking water reservoirs in a semi-arid region of Brazil[J],2019,86:128-137.
APA	Barros, Mario U. G..,Wilson, Alan E..,Leitao, Joao I. R..,Pereira, Silvano P..,Buley, Riley P..,...&Capelo-Neto, Jose.(2019).Environmental factors associated with toxic cyanobacterial blooms across 20 drinking water reservoirs in a semi-arid region of Brazil.HARMFUL ALGAE,86,128-137.
MLA	Barros, Mario U. G.,et al."Environmental factors associated with toxic cyanobacterial blooms across 20 drinking water reservoirs in a semi-arid region of Brazil".HARMFUL ALGAE 86(2019):128-137.