Jenis dan Kelimpahan Fitoplankton di Waduk Sungai Paku Kecamatan Kampar Kiri Kabupaten Kampar Provinsi Riau

Abstract

Abstract

Phytoplankton is a primary producer organism in aquatic ecosystem and it supplies oxygen to the waters through photosynthesis process. A research aim to determine types and abundance of phytoplankton in the Sungai Paku Reservoir has been carried out on June-July 2019. Sampling taken at three stations, namely Station 1 (riverine zone), Station 2 (transition zone) and Station 3 (lacustrine zone), once/week. Parameters measured were temperature, transparency, depth, pH, DO, free CO₂, nitrate (NO₃) and phosphate (PO₄). Result shown the types of phytoplankton found in the Sungai Paku Reservoir was 35 species that consist of 5 classes, namely Bacillariophyceae (5 species), Chlorophyceae (18 species), Cyanophyceae (7 species), Dinophyceae (2 species), and Euglenophyceae (3 species) and abudance of phytoplankton in the Sungai Paku Reservoir ranges from 78,336-182,016 cells/L. The water quality parameters were as follows: transparency 69.2-80.8 cm, temperature: 28.77-29.43 ^oC, pH 5, DO 3.53-4.42 mg/L, free CO₂ 10.56-11.44 mg/L, phosphate 0.077-0.111 mg/L, nitrate 0.085-0.109 mg/L. Based on phytoplankton abundance, Sungai Paku Reservoir can be categorized as mesotrophic.

 Keywords: Autotroph, Water Quality Parameters, Mesotrophic