Keanekaragaman dan Distribusi Ikan di Perairan Pulau Kampai Kecamatan Pangkalan Susu Kabupaten Langkat Sumatera Utara

Abstract

Research about “The Diversity and Distribution of Fishes at Kampai Island Waters, Pangkalan Susu District, Langka Residence, North Sumatera” was done at June 2010. Samples were taken from three stations and at each station was done thirty times of repetition. The point of sample taking was using Purposive Random Sampling Method. Samples were taken by using fishing net then identified that was done in Laboratory of Natural Resources and Environment Processing, Biology Department, Mathematic and Science Faculty, North Sumatera University. From result of research were taken fish that were consists of 5 ordos, 15 families, 16 genus and 16 species. The highest value of density is at Dermogenis sp with value 6,13 ind/100 m2 (station II) and the lowest value of density is at Apogon sp with value 0,94 ind/100 m2 (station III). The highest diversity is 2,452 (station I) and the lowest value of diversity is 2,091 (station III). Based on that value, the diversity of fishes at Kampai Island Waters is classified in middle level. The highest value of uniformity is at station I with value 0,884 and the lowest value of uniformity is at station III with value 0,754. Distribution pole of each species is classified in to random, uniform and group. Temperature, salinity and BOD5 have real influence to the diversity of fishes.