Plankton Community Structure in PLTA Koto Panjang Reservoir, Kampar District, Riau Province

Abstract

Koto Panjang Hydroelectric Power Plant is one of the reservoirs in Riau Province, many activities in Koto Panjang. Plankton is one of the organisms that is influenced by this condition. This study aims to determine the plankton community structure in Koto Panjang. The study was conducted on May 2019. Survey methods were used in this research. Samples were taken 3 times, once / weeks, in 3 different areas. One hundred liters of water was sieved into 125 ml using a plankton net number 25. The plankton was sampled was fixed using a Lugol solution and identified using a binocular microscope. There were 11 classes of plankton in Koto Panjang, 8 classes of phytoplankton and 3 classes for zooplankton. The value of plankton species diversity index (H') is ranges from 4.86 to 5.35, dominant index (C) 0.03-0.05 and equitability index E 0.54-0.62. The plankton community structure in the Koto Panjang Reservoir is categorized as good.