Obot, O. I., Afia, O. E. EFFECTS OF SAND DREDGING ON PHYTOPLANKTON DIVERSITY AND TROPHIC STRUCTURE OF THE OBIOKPOK NSIT RIVER, NIGER DELTA, NIGERIA. JASD [Internet]. 2026 Oct. 4 [cited 2026 Oct. 4];9(2):28-34. Available from: https://www.njaat.com.ng/index.php/jasd/article/view/1827