Studi Keanekaragaman Makrozoobentos di Aliran Sungai Padang Kota Tebing Tinggi

Abstract

The research have been done in April 12-14th 2008 and from this research we want to know about the Diversity Of Macrozoobenthic in lau Kawar Lakes. Sampel were collected from four stations by Purposive Random Sampling method. Surber net’s was used to taken the sampel. Samples were identified in Laboratory PSDAL, Department of Biology, Faculty of Mathematic and Natural Sciences of North Sumatera University. The result showed that there were found four classes (Insecta, Crustaceae, Turbelaria, and Gastropode) within 17 genera of Macrozoobenthic. Tubifex sp has the highest density index with 30,86 ind/m2 that was founded in Fourth station, and Allocapnia sp in thrid station has the lowest density index with 2,43 ind/m2 . The Index Diversity (H’) of all station with value between 1,188-1,952 and according to the analysis of Pearson Correlatin, Penetration, Dissolved Oxygen and Organic Substrat has the direct correlated to the Diversity of Macrozoobenthic, while pH, Chemical Oxygen demand, Biology Oxygen Demand saturation has the opposite correlated to the Diversity of Macrozoobenthic, thus Light Penetration and Temperature have constant variables.