Association between water courses lining, water quality and aquatic vegetation in two Egyptian governorates

Theodor Bilharz Research Institute

Bibliographic Information

Authors: Ismail N.M.; Mostafa B.B.; El-Said K.M.; Azzam A.M.; Abdel-Motleb A.; Abu Taleb H.M.

Journal: Egyptian Journal of Aquatic Biology and Fisheries

Publisher: Egyptian Society for the Development of Fisheries and Human Health

Publication Date: 1 May 2021

Volume / Issue: Volume 25 / Issue 3

Pages: 995–1012

ISSN: 11106131

DOI: 10.21608/EJABF.2021.184846

Scopus: View on Scopus

Document Type: Article

Access: All Open Access; Gold Open Access

Authors and Affiliations

Ismail N.M., Environmental research department, Theodor Bilharz research Institute, Imbaba, Egypt; Mostafa B.B., Environmental research department, Theodor Bilharz research Institute, Imbaba, Egypt; El-Said K.M., Environmental research department, Theodor Bilharz research Institute, Imbaba, Egypt; Azzam A.M., Environmental research department, Theodor Bilharz research Institute, Imbaba, Egypt; Abdel-Motleb A., Environmental research department, Theodor Bilharz research Institute, Imbaba, Egypt; Abu Taleb H.M., Environmental research department, Theodor Bilharz research Institute, Imbaba, Egypt

Abstract

The pattern of association between water canals lining, water quality and aquatic vegetation in Beheira and Giza governorates was studied. Samples of water and Aquatic plants were collected from the examining sites during four seasons in two successive years. Results showed that water conductivity and total dissolved salts in lined sites were significantly lower than those of unlined ones (P<0.01& P<0.05) in both governorates. In Beheira, Zn, Fe and Cd in lined and unlined sites were significantly increased (p<0.001, p<0.01& p<0.05) during summer comparing with the other seasons. In contrast, in Giza, the highest values of Zn, Pb, Cu, Fe and Cd were recorded in autumn in both lined and unlined sites. The percentage of occurrence and density of the plants were highly significant (p<0.01, p< 0.001) higher in unlined sites compared to the lined ones during all seasons in both governorates. In Beheira, Eichhornia crassipes plant was completely absent during all seasons in lined sites compared to the unlined ones. In Giza, E. crassipes (83.3%) and C. demersum (50%) was highly significant (p< 0.001) higher in unlined sites compared to the lined ones (50% and 0.0, respectively) during summer. The correlation coefficients depicted very good associations between plants and heavy metals in lined sites during spring for more than 50% and more than75% in summer (r=0.58; p<0.05). A strong positive correlation for all metals studied, Cd (0.658), Cu (0.758), Fe (0.589), and Pb (0.781) was observed. It can be concluded that watercourses lining may reduce the distribution of aquatic vegetation which rendered the current of water and preserving water with a good quality. There was a strong inverse correlation between the plants and heavy metals in lined canals. © 2021, Egyptian Society for the Development of Fisheries and Human Health. All rights reserved.

Keywords

Aquatic plants; Association pattern; Lining of watercourses; Water quality

Citation Information

Scopus Citations: 3

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