Copepoda abundance and diversity in the Saleh River, a tributary of the Euphrates River in the Northern Basrah

This study was conducted to determine the seasonal changes in Copepoda species in the Saleh River. Monthly sampling was done in four stations in the Saleh River using a 55µm plankton net from January to December 2020. Based on the results, a total of 12 taxa of Copepoda were recorded that Copepoda was most abundant group during the spring. Nauplii of Copepoda and larvae of Cyclops were the predominant species. The total number of Copepoda ranged between 54ind/m3 in the summer and 504ind/m3 in the spring.