KUALITAS PERAIRAN ANAK SUNGAI NGASO DI KABUPATEN ROKAN HULU BERDASARKAN BIOINDIKATOR ALGA

-, Afridayanti ( Program Studi Pendidikan Biologi, Fakultas Keguruan dan Ilmu Pendidikan, Universitas Pasir Pengaraian)
Purnama, Arief Anthonius ( Program Studi Pendidikan Biologi, Fakultas Keguruan dan Ilmu Pendidikan, Universitas Pasir Pengaraian)
Mubarrak, Jismi ( Program Studi Pendidikan Biologi, Fakultas Keguruan dan Ilmu Pendidikan, Universitas Pasir Pengaraian)

Jurnal Ilmiah Mahasiswa FKIP Prodi Biologi
Vol 1, No 1 (2015): Jurnal Ilmiah Mahasiswa FKIP Prodi Biologi

Study about Ngaso River qater quality in Rokan Hulu based on algae as bioindicator has been conducted in July to November 2014 with purposive sampling method. Samples were collected using a plankton net no. 25 and brush muller. Result, 6 species were found. The highest abundance value in station 1 with 1526.55 cells/liter, the lowest in stations 3 with 22.4 cells/liter. The highest diversity index in station 1 with 0.35, the lowest in station 3 with 0.04. The highest dominance in station 1 with 3.21, the lowest in station 3 with 0.0001. Conclution, this river was in heavily polluted category.