干旱区生态环境知识资源中心(Arid): SPATIO-TEMPORAL DYNAMICS OF TOXIC CYANOBACTERIA IN AN ARTIFICIAL LAKE IN THE BRAZILIAN SEMI-ARID REGION

Arid

DOI	10.1590/1983-21252022v35n218rc
	SPATIO-TEMPORAL DYNAMICS OF TOXIC CYANOBACTERIA IN AN ARTIFICIAL LAKE IN THE BRAZILIAN SEMI-ARID REGION
	De Oliveira Lima, Francisco Josivan; Lopes, Fernando Bezerra; De Andrade, Eunice Maia; Da Rocha, Francisco Cleiton; Maia Meireles, Ana Celia
通讯作者	Lima, FJD
来源期刊	REVISTA CAATINGA
ISSN	0100-316X
EISSN	1983-2125
出版年	2022
卷号	35 期号:2 页码:423-435
英文摘要	Intensification of the eutrophication process in surface water leads to an increase in the intensity and frequency of cyanobacterial blooms, compromising the availability of drinking water. Therefore, the aim of this study was to investigate the spatio-temporal dynamics of cyanobacteria and identify the most important nutrients for such dynamics in a semiarid artificial lake, the Oros reservoir, in north-eastern Brazil. Seventyseven water samples were collected in 11 campaigns (six during the dry season and five during the rainy season) from seven points. The attributes under investigation were the Secchi transparency, turbidity, pH, apparent colour, electrical conductivity, total solids, total phosphorus, soluble orthophosphate content, total Kjeldahl nitrogen, ammonia content, nitrate content, and cyanobacteria dynamics, resulting in a total of 924 samples (number of campaigns x number of points x number of attributes). Principal component analysis and cluster analysis were used to investigate the significance and determinant attributes of the spatio-temporal dynamics of cyanobacteria. Of the 17 species of cyanobacteria identified, 10 accounted for 72.47% of the total accumulated variance. During the rainy season, four homogeneous groups of cyanobacteria formed, whereas during the dry season, only three groups formed. The greatest concentrations occurred during the dry season, notably for Aphanocapsa spp., Cylindrospermopsis sp., and Geitlerinema sp., which are potentially toxic and show a greater affinity to the physical attributes of water. Climate seasonality was decisive in the spatiotemporal dynamics of cyanobacteria, and high transparency values limited excessive proliferation of the dominant species.
英文关键词	Phytoplankton Water quality Seasonality Multivariate analysis
类型	Article
语种	英语
开放获取类型	gold, Green Published
收录类别	SCI-E
WOS记录号	WOS:000784452700005
WOS关键词	WATER-QUALITY ; PHYTOPLANKTON DYNAMICS ; RESERVOIR
WOS类目	Agronomy
WOS研究方向	Agriculture
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/394299
推荐引用方式 GB/T 7714	De Oliveira Lima, Francisco Josivan,Lopes, Fernando Bezerra,De Andrade, Eunice Maia,et al. SPATIO-TEMPORAL DYNAMICS OF TOXIC CYANOBACTERIA IN AN ARTIFICIAL LAKE IN THE BRAZILIAN SEMI-ARID REGION[J],2022,35(2):423-435.
APA	De Oliveira Lima, Francisco Josivan,Lopes, Fernando Bezerra,De Andrade, Eunice Maia,Da Rocha, Francisco Cleiton,&Maia Meireles, Ana Celia.(2022).SPATIO-TEMPORAL DYNAMICS OF TOXIC CYANOBACTERIA IN AN ARTIFICIAL LAKE IN THE BRAZILIAN SEMI-ARID REGION.REVISTA CAATINGA,35(2),423-435.
MLA	De Oliveira Lima, Francisco Josivan,et al."SPATIO-TEMPORAL DYNAMICS OF TOXIC CYANOBACTERIA IN AN ARTIFICIAL LAKE IN THE BRAZILIAN SEMI-ARID REGION".REVISTA CAATINGA 35.2(2022):423-435.