<![CDATA[ Abstrak Many activities in the Bakuok Lake contribute the input of organic and anorganic matter that affects the nutrient concentration and increasing the growth of phytoplankton. A research has been conducted in June-July 2019. There were three sampling points, in the inlet, in the middle of the lake, and in the surface (0,15 m) and 2 Secchi depth (1,74 m). Samplings were conducted 3 times, once/week. Water quality parameters measured were temperature, transparency, depth, pH, dissolved oxygen, CO2, nitrate and phosphate.Results shown that there were 33 species of phytoplankton that were belonged to 7 classes, namely Chlorophyceae (15 spesies), Cyanophyceae (2 spesies), Bacillariaphyceae (5 spesies), Euglenophyceae (3 spesies), Zygnematophyceae (5 spesies), Trebouxiophyceae(2 spesies), and Cryptophyceae (1 spesies).The phytoplankton abundance of the Bakuok Lake was 89.689-100.491 cells/L. The most common type ofphytoplankton presentwasAnkistrodesmus falcatus. Water quality parameters values were as follow, temperature was 29-310C, depth was 4-6 m, pH was 5, dissolved oxygen was 6.57-7.57 mg/L, CO2 was 9.37-13.86 mg/L, nitrate was 0.0190-0.0333 mg/L and phosphate was 0.0354-0.0575 mg/L. Based on the type and abundance of phytoplankton, it can be concluded that the Bakuok Lake can be categorized as mesotrophic. Keywords :Oxbow Lake, Water Quality, Ankistrodesmus falcatus, Mesotrophic ]]>
Copyrights © 2020
