干旱区生态环境知识资源中心(Arid): Proposal for a trophic status index for brazilian semi-arid reservoirs

Arid

DOI	10.1590/1983-21252024v3712405rc
	Proposal for a trophic status index for brazilian semi-arid reservoirs
	da Silva, Thiago T.; Saraiva, Marianna de A.; Becker, Helena
通讯作者	da Silva, TT
来源期刊	REVISTA CAATINGA
ISSN	0100-316X
EISSN	1983-2125
出版年	2024
卷号	37
英文摘要	The Brazilian semi -arid region, which is characterized by high climate vulnerability, intense and frequent droughts, and irregular rainfall, has a restricted quantity of water in its reservoirs and low quality at several points. Regarding quality, the literature presents indexes that evaluate eutrophication in different conditions, using specific expressions that may not be applied universally. To assist in decision -making and minimize this problem in the semi -arid region, the present work proposes a new trophic state index (TSI) taking into account data and conditions of reservoirs in the semi -arid region of Cear & aacute;. In total, 18 variables and the correlations between them were evaluated. In the years 2014-2022, data was made available by COGERH for 25 reservoirs managed by the company. Descriptive statistics were performed for each variable data set, removing outlier values to analyze trends. An exploratory investigation was also carried out, studying correlations between variables and transparency. Phosphorus, nitrogen, chlorophyll a , and turbidity presented the most significant correlations for the composition of the proposed TSI. An adaptation was made in the base expression of the TSI, which is associated with the values obtained in the semi -arid region of Cear & aacute;. Trophic classes were suggested for this new TSI along with their respective expressions. The proposed index yielded comparable results in certain classifications when compared with other established indexes. High concentrations of cyanobacteria occurred in reservoirs classified as eutrophic. To enhance the robustness of this novel index, it is recommended to extend its application to additional reservoirs within the semi -arid region.
英文关键词	Trophic level Monitoring Cear & aacute reservoirs Correlation
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:001231387500002
WOS关键词	WATER-QUALITY
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/2XILL650/405371
推荐引用方式 GB/T 7714	da Silva, Thiago T.,Saraiva, Marianna de A.,Becker, Helena. Proposal for a trophic status index for brazilian semi-arid reservoirs[J],2024,37.
APA	da Silva, Thiago T.,Saraiva, Marianna de A.,&Becker, Helena.(2024).Proposal for a trophic status index for brazilian semi-arid reservoirs.REVISTA CAATINGA,37.
MLA	da Silva, Thiago T.,et al."Proposal for a trophic status index for brazilian semi-arid reservoirs".REVISTA CAATINGA 37(2024).