Keanekaragaman Makrozoobentos di Hilir Sungai Bah Tongguran Kecamatan Tanah Jawa Kabupaten Simalungun

Abstract

The Diversity of Macrozoobenthos in Downstream of Bah Tongguran River Subdistrict Of Tanah Jawa District Of Simalungun North Sumatera has been observed from July to September 2016. The purpose of this study was to determine the diversity of macrozoobenthos as bioindicator in Bah Tongguran River and to determine the river quality level in relation to phisical-chemical of the river. The study was designed according to purposive sampling method. Surber net was used to taken the sampel. Sampels were identified in PSDAL Laboratory, Department of Biology, Faculty of Mathematic and Natural Sciences of North Sumatera University. The result showed that three phylum, five clases, eight ordo, thirteen family and fourteen genera. The highest Index Diversity (H’) was founded at the 3rd station with 1,89 and the lowest value was founded at the 1st station with 1,46.

Keanekaragaman Makrozoobentos Di Hilir Sungai Bah Tongguran Kecamatan Tanah Jawa Kabupaten Simalungun telah diteliti pada bulan Juni sampai September 2016. Tujuan dari penelitian ini adalah untuk mengetahui keanekaragaman makrozoobentos sebagai bioindikator di Sungai Bah Tongguran serta menentukan kualitas perairan sungai berdasarkan sifat fisika-kimia yang dimilikinya.Titik pengambilan sampel ditentukan dengan metode Purposive Sampling. Sampel diambil menggunakan surber net kemudian diidentifikasi di Laboratorium PSDAL Departemen Biologi, Fakultas Matematika dan Ilmu Pengetahuan Alam, Universitas Sumatera Utara, Medan. Makrozoobentos yang didapatkan terdiri dari tiga filum, lima kelas, delapan ordo, 13 famili dan 14 genus. Nilai Indeks Keanekaragaman (H’) makrozoobentos tertinggi didapati pada stasiun III sebesar 1,89 dan terendah pada stasiun I sebesar 1,46.