Jenis Dan Kelimpahan Perifiton Pada Pipa Paralon Di Sungai Air Hitam Kota Pek…

Periphyton is a sessile microscopic organism that attach on certain substrate. Research aims to determine the type and abundance of periphyton attached on PVC pipe substrate has been carried out in April-May 2018 in the Air Hitam River. There were three sampling stations, namely S1 (in the upstream), S2 (in the middle of stream) and S3 (in the downstream). Samplings were conducted once/week for…