干旱区生态环境知识资源中心(Arid): Identification of the degree of impact of dams on the hydrologic regime of semi-arid rivers: an evaluation of the DHRAM method

Arid

DOI	10.1590/2318-0331.011716093
	Identification of the degree of impact of dams on the hydrologic regime of semi-arid rivers: an evaluation of the DHRAM method
	Rodrigues de Souza, Naiah Caroline; Fontes, Andrea Sousa; da Luz, Lafayette Dantas; Conceicao Pinheiro, Sandra Maria
通讯作者	de Souza, NCR
来源期刊	RBRH-REVISTA BRASILEIRA DE RECURSOS HIDRICOS
ISSN	1414-381X
EISSN	2318-0331
出版年	2017
卷号	22
英文摘要	The flow regulation that results from the implantation of dams causes consequences to the river ecosystems due to the modification on the characteristics of the hydrologic regime. The investigation of these changes become relevant, mainly in semi-arid regions where there is a great amount of these hydraulic structures and lack of such analyzes. Considering the above, this paper aims to evaluate the Dundee Hydrological Regime Alteration Method (DHRAM) through the classification of the degree of impact of dams located on rivers Itapicuru, Paraguacu and their tributaries, verifying the adequacy of its use to represent the semi-arid hydrologic regime. Thereby, the DHRAM was applied in three versions: considering the thresholds that define the scores to classify the degree of impact in its original set (accordingly to Black et al. (2005)); with the adjustment of those thresholds to local conditions; and, with the regrouping of variables and adjustment of thresholds. The results showed that the method in its original set is applicable to semi-arid rivers, however it tends to be very restrictive against the high natural hydrologic variability characteristic of these rivers, and it ends up pointing to a high degree of alteration for dams that are known for not causing a very siginifcant flow regulation. The DHRAM with the regrouping of variables and the adjustment of thresholds presented the classification that approached the most to the known characteristics of the studied dams, being useful for the evaluation of the impact of dams still in project, and also to guide the adoption of operating rules that minimize the most significant hydrologic alterations that are identified.
英文关键词	Hydrologic indicators Classification of the degree of impact Semi-arid
类型	Article
语种	英语
开放获取类型	DOAJ Gold
收录类别	ESCI
WOS记录号	WOS:000424560900014
WOS关键词	WATER
WOS类目	Water Resources
WOS研究方向	Water Resources
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/332531
作者单位	[Rodrigues de Souza, Naiah Caroline; da Luz, Lafayette Dantas] Univ Fed Bahia, Salvador, BA, Brazil; [Fontes, Andrea Sousa; Conceicao Pinheiro, Sandra Maria] Univ Fed Reconcavo Bahia, Cruz Das Almas, BA, Brazil
推荐引用方式 GB/T 7714	Rodrigues de Souza, Naiah Caroline,Fontes, Andrea Sousa,da Luz, Lafayette Dantas,et al. Identification of the degree of impact of dams on the hydrologic regime of semi-arid rivers: an evaluation of the DHRAM method[J],2017,22.
APA	Rodrigues de Souza, Naiah Caroline,Fontes, Andrea Sousa,da Luz, Lafayette Dantas,&Conceicao Pinheiro, Sandra Maria.(2017).Identification of the degree of impact of dams on the hydrologic regime of semi-arid rivers: an evaluation of the DHRAM method.RBRH-REVISTA BRASILEIRA DE RECURSOS HIDRICOS,22.
MLA	Rodrigues de Souza, Naiah Caroline,et al."Identification of the degree of impact of dams on the hydrologic regime of semi-arid rivers: an evaluation of the DHRAM method".RBRH-REVISTA BRASILEIRA DE RECURSOS HIDRICOS 22(2017).