KEANEKARAGAMAN FITOPLANKTON DI PERAIRAN DANAU SIBILI KOTA PALU SULAWESI TENGAH

Research on "Phytoplankton diversity in the waters of Lake Sibili, Palu City, Central Sulawesi" was conducted in September 2021. The research aims to determine the level of phytoplankton diversity in Lake Sibili, Tawaeli District, Palu City, Central Sulawesi. The research uses a method (purposive random sampling). The identification results obtained 10 types of phytoplankton, namely Bacillaria sp, Schroedeia segitera, Zygnemopsis circumcarinatum, Spirogyra plorifica, Shroedeia anchora, Biddulphia sp, Actinastrum gracillimum, Nitzschia actinastroides, Pleurotaenium nageli and Schaeroplea annulina. Phytoplankton diversity index from each observation station with a diversity index value (station I) 1,726, (station II) 1,801, (station III) 1,743, (station IV) 1,647 and (station V)
1,728. Based on this, the level of phytoplankton diversity in Lake Sibili, Tawaeli

District, Palu City, Central Sulawesi is classified as moderate.

Keyword : Diversity, Phytoplankton, Purposive random sampling