Structure and Biochemical Analysis of Phytoplankton in the Wadi El-Rayan Lakes, El-Fayoum, Egypt.
Sabae, S., Mahmoud, A. (2021). Structure and Biochemical Analysis of Phytoplankton in the Wadi El-Rayan Lakes, El-Fayoum, Egypt.. EKB Journal Management System, 11(2), -. doi: 10.21608/eja.2021.68936.1047
Soaad Ahmed Sabae; Abeer MA Mahmoud. "Structure and Biochemical Analysis of Phytoplankton in the Wadi El-Rayan Lakes, El-Fayoum, Egypt.". EKB Journal Management System, 11, 2, 2021, -. doi: 10.21608/eja.2021.68936.1047
Sabae, S., Mahmoud, A. (2021). 'Structure and Biochemical Analysis of Phytoplankton in the Wadi El-Rayan Lakes, El-Fayoum, Egypt.', EKB Journal Management System, 11(2), pp. -. doi: 10.21608/eja.2021.68936.1047
Sabae, S., Mahmoud, A. Structure and Biochemical Analysis of Phytoplankton in the Wadi El-Rayan Lakes, El-Fayoum, Egypt.. EKB Journal Management System, 2021; 11(2): -. doi: 10.21608/eja.2021.68936.1047

Structure and Biochemical Analysis of Phytoplankton in the Wadi El-Rayan Lakes, El-Fayoum, Egypt.

Egyptian Journal for Aquaculture
Article 6, Volume 11, Issue 2, June 2021  XML PDF (574.98 K)
Document Type: Research article
DOI: 10.21608/eja.2021.68936.1047
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Authors
Soaad Ahmed Sabae email orcid ; Abeer MA Mahmoudorcid
Hydrobiology, National institute of oceanography and fishries
Abstract
Wadi El-Rayan lakes are an important source of irrigation water and fisheries in El-Fayoum Governorate, Egypt. Phytoplankton is an important bioindicator of the chemical and biological changes in natural ecosystems including the Wadi El-Rayan lakes. Seasonal and regional variations lead to concomitant changes in the total protein, carbohydrate, and lipid contents of phytoplankton; such changes affect the nutritional quality of food available in the aquatic system. In the present study, these changes were determined in the phytoplankton of Wadi El-Rayan lakes. The maximum protein (27.95 & 11.36 mgL-1) contents were detected in summer and winter respectively. The maximum carbohydrate content was detected in autumn and winter (1.76 and 1.12 mgL-1 at site 8 and 4 respectively).The maximum lipid content was observed in winter (0.73 mgL-1 at site 6). Phytoplankton density was much higher in the upper lake than in the lower lake. In total, 92 species were identified; the phytoplankton community in the lake included typical groups such as Chlorophyceae, Cyanophyceae, Bacillariophyceae, Cryptophyceae, Dinophyceae, Chrysophyceae, and Euglenophyceae. Green alga was the dominant class, constituting 44.4%–45.0% of the phytoplankton standing crop across seasons. Cyanophyceae (29%–39%), Bacillariophyceae (9.7%–16.1%), and Dinophyceae (4.0%–9.2%) were the next most abundant classes; Cryptophyceae, Chrysophyceae, and Euglenophyceae were rarely found.
Keywords
El-Rayan Lakes; phytoplankton; biochemical analysis
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