What is it about?
This study was conducted to evaluate the effects of the Tharthar Arm on the composition and diversity of Rotifera in the Tigris River. Six sampling sites were selected, two on Tharthar Arm and four along the Tigris River, one before the confluence as a control site and the others downstream of the confluence. Seventy-seven species of Rotifera were identified in Tigris, whereas 60 were in the arm. The results showed that the low density of Rotifera in Tharthr Arm decreased the density in Tigris from 239812.4 Ind./m3 upstream of the confluence to 223315.5 Ind./m3 immediately downstream of the confluence.
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Why is it important?
The objective of this study is to investigate the effect of Tharthar water on the density and diversity of Rotifera in the Tigris River north of Baghdad City during 2020.
Perspectives
We can draw the conclusion that immediately downstream of the confluence, Tharthar Arm decreased the density and diversity of Rotifera. The values then increased as the distance downstream of the main river increased. Additionally, the density varied seasonally in response to changes in the climate, and the composition of Rotifera in both rivers remained constant for a considerable amount of time. Environmental conditions and hydrological regimes were the most important factors that affected Rotifera density.
Dr Osama S. Majeed
Ministry of Education, Baghdad, Iraq
Read the Original
This page is a summary of: Impact of Tharthar Arm on the Composition and Diversity of Rotifera in Tigris River North of Baghdad, Iraq, Iraqi Journal of Science, April 2022, University of Baghdad College of Science,
DOI: 10.24996/ijs.2022.63.4.7.
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