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Nutrient Salts and Eutrophication Assessment in Northern Delta Lakes: Case study Burullus Lake, Egypt

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Last updated: 01 Jan 2025

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Abstract

This study was designed to assess the levels of nutrient salts and eutrophication status in Burullus Lake water. Most of the physicochemical characteristics showed wide variations among the sites and seasons (p<0.01). The water of the lake was in the alkaline side, and pH value fluctuated in the range (7.47-8.96). The lake water was oxygenated around the year (2.10 and 13.40 mg/l).  The nutrient salts showed a lot of fluctuations, often occurring in high concentrations, with a remarkable spatial and temporal difference (p<0.001). As a result of nutrient enrichment, Chlorophyll-a (Chl-a) recorded abnormal high concentrations up to 648.3 µg/L. TN:TP ratio implied that phosphorus is the limiting factor for phytoplankton growth in Burullus Lake. The high levels of nutrient salts and Chl-a together serve as a good indicator of hypertrophic levels in the lake water. This observation was confirmed by the data of the Trophic State Index (TSI) using Chl-a, TP, TN, and Secchi depth that indicated the hypereutrophic state of Burullus Lake associated with poorly of its water quality. Our results indicated the existence of dramatic deterioration in Burullus Lake because of human activities and the discharge of wastewater to the lake.

DOI

10.21608/ejabf.2019.30239

Keywords

Burullus Lake, Eutrophication, N:P ratio, total nitrogen, Total phosphorus, Trophic State Index

Authors

First Name

Fathy

Last Name

A. Elsayed

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Orcid

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First Name

Mohamed

Last Name

A. Okbah

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Orcid

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First Name

Seliem

Last Name

M. El-Syed

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Orcid

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First Name

Manal

Last Name

A. Eissa

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Affiliation

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Email

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Orcid

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First Name

Mohamed

Last Name

E. Goher

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Volume

23

Article Issue

2

Related Issue

5152

Issue Date

2019-04-01

Receive Date

2019-03-12

Publish Date

2019-04-16

Page Start

145

Page End

163

Print ISSN

1110-6131

Online ISSN

2536-9814

Link

https://ejabf.journals.ekb.eg/article_30239.html

Detail API

https://ejabf.journals.ekb.eg/service?article_code=30239

Order

12

Type

Original Article

Type Code

103

Publication Type

Journal

Publication Title

Egyptian Journal of Aquatic Biology and Fisheries

Publication Link

https://ejabf.journals.ekb.eg/

MainTitle

Nutrient Salts and Eutrophication Assessment in Northern Delta Lakes: Case study Burullus Lake, Egypt

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Article

Created At

22 Jan 2023