Keanekaragaman Makrozoobenthos di Kawasan Perairan Kuala Tanjung Kecamatan Medang Deras Kabupaten Batubara

Abstract

Research about “ The diversity of macrozoobenthos in Kuala Tanjung seas area subdistrict of Medang Deras District of Batubara” has been observed. The sampling was conducted from four station of observation. The sampling method is Purposive Random Sampling and then identified in Management Laboratory of Natural Resource and Environment, Study Program of Biology, Faculty of Mathematic and Natural Science, University of North Sumatera, Medan. The research indicated that 34 genera of macrozoobenthos consisting of Annelida, Arthropoda, and Molusca. Genera Anadara was found at tourism area station have the highest density as big as 85,19 ind/m2 . Aequipecten, Polinices, Donax, and Pholas are the lowest density as big as 0,62 ind/m2 . Mangrove area station has the highest diversity index (H’) as big as 2,76, as for at estuary area station has the highest diversity index (H’) as big as 1,37. The disposal of waste factory station has the highest uniformity index (E) as big as 0,83, as for uniformity index (E) at tourism area station as big as 0,52. Light intensity, light penetration, and organic substrat have a strong correlation to diversity index (H’).