UM
Spatio-temporal variations of phytoplankton structure and water quality in the eutrophic freshwater reservoir of Macau
Weiying Zhang1; Inchio Lou1; Wai Kin Ung2; Yijun Kong2; Kai Meng Mok1
2015-08-21
Source PublicationDesalination and Water Treatment
ISSN1944-3994
Volume55Issue:8Pages:2237-2252
Abstract

Abstract: In small-scale pumped-storage reservoirs, physical disturbances have been suggested to be one of the main factors influencing phytoplankton structure and water quality. This study presented data on dynamic changes of the phytoplankton structure and the quality of raw water sampled monthly from January 2011 to June 2012, in three locations (with two different water levels each) of a small pumped-storage reservoir of Macau main storage reservoir. The trophic state index, phytoplankton structure indices, and multivariate statistical techniques were applied for assessing trophic state, phytoplankton community, and spatio-temporal variations of the reservoir, respectively. The results showed that the reservoir was categorized as a eutrophic–hypereutrophic reservoir, with the dominance of Cyanophyta in 2011, and of Chlorophyta and Bacillariophyta in 2012. Lowest diversity/evenness and highest dominance happened in June 2011, while highest diversity/evenness and lowest dominance occurred in May 2012. Principle component analysis identified four factors that can explain 80.8% of the total variance of the water quality data, and cluster analysis generated two clusters of spatial similarity among the six sampling points and two clusters of temporal similarity among the 18 months. Discriminant analysis results revealed only three parameters (TP, NO3-N, and Chl-a) that could afford 100% correct assignation in temporal analysis, while no spatial variation was found in spatial analysis. This study highlighted the usefulness of combination of these methods for the evaluation and interpretation of complex water quality data-sets and assessment of pollution level of small-scale eutrophic reservoirs. The results from the study can be used in developing monitoring program of freshwater bodies.

KeywordFreshwater Reservoirs Multivariate Statistical Techniques Phytoplankton Structure Spatio-temporal Variations Water Quality
DOIhttps://doi.org/10.1080/19443994.2014.930933
URLView the original
Indexed BySCI
WOS Research AreaEngineering ; Water Resources
WOS SubjectEngineering, Chemical ; Water Resources
WOS IDWOS:000360367400025
PublisherTAYLOR & FRANCIS INC, 530 WALNUT STREET, STE 850, PHILADELPHIA, PA 19106 USA
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Cited Times [WOS]:2   [WOS Record]     [Related Records in WOS]
Document TypeJournal article
CollectionUniversity of Macau
Corresponding AuthorWeiying Zhang; Inchio Lou; Wai Kin Ung; Yijun Kong; Kai Meng Mok
Affiliation1.Faculty of Science and Technology, Department of Civil and Environmental Engineering, University of Macau, Av. Padre Toma´s Pereira Taipa, Macau SAR, China
2.Laboratory and Research Center, Macao Water Co. Ltd., 718, Avenida do Conselheiro Borja, Macau SAR, China
First Author AffilicationFaculty of Science and Technology
Corresponding Author AffilicationFaculty of Science and Technology
Recommended Citation
GB/T 7714
Weiying Zhang,Inchio Lou,Wai Kin Ung,et al. Spatio-temporal variations of phytoplankton structure and water quality in the eutrophic freshwater reservoir of Macau[J]. Desalination and Water Treatment,2015,55(8):2237-2252.
APA Weiying Zhang,Inchio Lou,Wai Kin Ung,Yijun Kong,&Kai Meng Mok.(2015).Spatio-temporal variations of phytoplankton structure and water quality in the eutrophic freshwater reservoir of Macau.Desalination and Water Treatment,55(8),2237-2252.
MLA Weiying Zhang,et al."Spatio-temporal variations of phytoplankton structure and water quality in the eutrophic freshwater reservoir of Macau".Desalination and Water Treatment 55.8(2015):2237-2252.
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