Keanekaragaman Makrozoobentos sebagai Bioindikator Pencemaran Air Sungai Sunggal di Desa Sriguting Provinsi Sumatera Utara

Abstract

The research about Macrozoobenthos Diversity as a Bioindicator of Pollution of River Water Quality in the Village Sunggal Srigunting North Sumatera have been done in May - June 2014. Sampel were collected from three stations by Purposive Random Sampling method. Surber net was used to taken the sampel. Sampel wereidentified in Laboratory Terpadu Management Aquatic Resourse Faculty of Agriculture of North Sumatera University. The result showed that there were found four classes (Oligochaeta, Crustacea, Bivalvia, dan Gastropoda) within 14 genera of Macrozoobenthic. Goniobasis has the highest density index with 222,22 ind/m2 that was founded in second station, and Branchiora as the lowest density index founded in third station. The highest Index Diversity (H’) was founded at third station with 2,24 and the lowest value was founded at first stasion with 1,35. According to analysis of Storet method, Temperature, Ligh penetration, DO, pH, BOD, nitrat, phospate, and Organic Substrat still meet water quality standards appropriate Goverment Regulation No.82 of 2001.