Keanekaragaman Ikan di Perairan Sungai Sibiru-Biru, Kecamatan Sibiru, Kabupaten Deli Serdang, Sumatera Utara

Abstract

Nowadays the ecosystem of Sibiru-biru river area was decreased, was shown from decreasing fish found in that area. A study of fish diversity of Sibiru-biru river has been done through sampling. Sampling design was based on Purpossive Random Sampling, with four disticnt stations in terms of community activities and coastal areas. Sampling was done in thirty repetitions for each stations. The results showed that there were two orders of fish, four families, six genera and seven species. The highest density of fish was from station 4 with density of 0.072 ind/m2 while being the lowest from station 1 with density of 0.048 ind/m2 . The highest diversity index was from station 4 with value of 1.36 while being the lowest from station 3 with value of 1.04. Species found in this research were Oreochromis niloticus, Hampala macrolepidota, Mystacoleucus marginatus, Tor soro, Tor tambroides, Channa striata, and Oxyeleotris marmorata. Velocity, light penetration and light intensity was strongly correlated with the diversity of fishes.