Keanekaragaman Makrozoobenthos di Perairan Pulau Kampai Kecamatan Pangkalan Susu Kabupaten Langkat Sumatera Utara

Abstract

“The diversity of macrozoobenthos in Sembilan Island Waters, subdistrict of Pangkalan Susu, District of Langkat, North Sumatera”, has been observed. The sample was taken from three stations of observation, nine replications were conducted in each station. The point of sampling was determined by using Purposive Random Sampling Method. The samples was taken by using surber net and the sample was then identified in Management Laboratory of Natural Resource and Environment, Study Program of Biology, Faculty of Matematics and Natural Science, University of Sumatera Utara, Medan. The result of research indicated 19 genus of macrozoobenthos consisting of 4 filum: Annelida, Arthropoda, Echinodermata and Molusca. The highest density was found in genus of Cerithidea, 44,44 ind/m2 (station I), and the lowest was found in genus of Ophiomastix, 1,22 ind/m2 (station II). The highest diversity index of macrozoobenthos was found in station III, 2,121 ind/m2. The highest uniformity index (E) was found in station II, 0,942 and the lowest one was in station I, 0,914. The result of correlation analysis by Pearson-test indicated that temperature, BOD5, salinity, organic substrat and pH have a strong correlation to diversity index (H’) of macrozoobenthos.