Obot, O. I., & Afia, O. E. (2026). EFFECTS OF SAND DREDGING ON PHYTOPLANKTON DIVERSITY AND TROPHIC STRUCTURE OF THE OBIOKPOK NSIT RIVER, NIGER DELTA, NIGERIA. Journal of Agripreneurship and Sustainable Development, 9(2), 28–34. Retrieved from https://www.njaat.com.ng/index.php/jasd/article/view/1827