Diversity and Density of Macrobenthic Invertebrates Associated with Macrophytes in the El-Rayah El-Nasery and El-Rayah El-Behery, Nile River, Egypt

Document Type : Original Article

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Abstract

A hydrobiological investigation of macrobenthic fauna was seasonally conducted to address El-Rayah El-Nasery and El-Rayah El-Behery from spring 2014 to winter 2015. A total of 52 species were recorded belonging to three phyla. and represented by 33,438 and 12,066 individuals/m2 in both rayahs, respectively. Arthropoda was the most predominant (30 species), followed by Mollusca (15 species) and Annelida  (7 species). Station- N8 recorded the highest density and diversity, while the lowest abundance and species number of macrobenthic fauna were found in station- B6. The latter station was proved to be contaminated with organic waste originated from ElRahawy drain. The diversity and density of macrobenthic fauna were higher in El-Rayah El-Nassery compared to El-Rayah El-Behery due to organic pollution in the latter flowing from the Rosetta Branch after the confluence with El Mahmoudia canal.

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Egyptian Journal of Aquatic Biology and Fisheries
Volume 25, Issue 5 - Serial Number 5
September and October 2021
Pages 511-526

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