Article (Scientific journals)
Assessment of Water Quality Variations and Trophic State of the Joumine Reservoir (Tunisia) by Multivariate Analysis
Madyouni, Haifa; Almanza, Viviana; Benabdallah, Sihem et al.
2023In Water, 15 (17), p. 3019
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Keywords :
Water Science and Technology; Aquatic Science; Geography, Planning and Development; Biochemistry
Abstract :
[en] North Tunisia’s Joumine reservoir provides water for drinking and agriculture irrigation purposes. Therefore, its water quality is crucial, especially with the recurrence of dry years in a global climate change context. This study aims to evaluate its environmental parameters, phytoplankton community structure, and trophic status. The data were newly analyzed using multivariate statistical methods and redundancy analysis (RDA) with the Trophic State Index (TSI) and Trophic State Index deviation (TSID). Monthly sampling occurred from May 2021 to June 2022 at eight stations. Water samples were collected to assess physical-chemical parameters and Chlorophyll-a, as well as to identify phytoplankton species. Three seasonal clusters of summer, autumn, and spring were identified. Water nutrient variations primarily resulted from point and non-point source contamination, along with natural processes. Carlson’s Trophic State Index (CTSI) indicates a eutrophic status for the Joumine reservoir. TSID indicated there was no algal turbidity in the reservoir. The study identified 25 phytoplankton taxa, with Chlorophyceae exhibiting high densities and diversities. RDA revealed that NO3−, NH4+, DO, pH, water flow, and water temperature were the most important environmental factors controlling phytoplankton structure in the Joumine reservoir. The outcomes of this study may provide helpful information to improve the management of the Joumine reservoir.
Disciplines :
Environmental sciences & ecology
Author, co-author :
Madyouni, Haifa  ;  Université de Liège - ULiège > Freshwater and OCeanic science Unit of reSearch (FOCUS) ; LR 7AGR01 GREEN-TEAM, National Agronomic Institute of Tunisia, Carthage University, 43 Avenue Charles Nicolle, Tunis 1082, Tunisia
Almanza, Viviana ;  Université de Liège - ULiège > Département des sciences de la vie > Physiologie et génétique bactériennes ; Centre of Environmental Sciences EULA—Chile, University of Concepción, Barrió Universitario s/n, Concepción 4070112, Chile
Benabdallah, Sihem ;  Georessources Laboratory, Center for Water Research and Technologies, CERTE, P.O. Box 273, Soliman 8020, Tunisia
Joaquim-Justo, Célia ;  Université de Liège - ULiège > Département de Biologie, Ecologie et Evolution > Ecologie animale et écotoxicologie
Romdhane, Mohamed Salah ;  Ecosystems and Aquatic Resources Laboratory, National Agronomic Institute of Tunisia, Carthage University, Tunis 1082, Tunisia
Habaieb, Hamadi;  LR 7AGR01 GREEN-TEAM, National Agronomic Institute of Tunisia, Carthage University, 43 Avenue Charles Nicolle, Tunis 1082, Tunisia
Deliège, Jean-François  ;  Université de Liège - ULiège > Département de Biologie, Ecologie et Evolution > Aquapôle
Language :
English
Title :
Assessment of Water Quality Variations and Trophic State of the Joumine Reservoir (Tunisia) by Multivariate Analysis
Publication date :
22 August 2023
Journal title :
Water
eISSN :
2073-4441
Publisher :
MDPI AG
Volume :
15
Issue :
17
Pages :
3019
Peer reviewed :
Peer Reviewed verified by ORBi
Funders :
WBI - Wallonie-Bruxelles International [BE]
Available on ORBi :
since 18 September 2023

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