iv
KEANEKARAGAMAN IKAN DI PERAIRAN SUNGAI SIBIRU-BIRU, KECAMATAN SIBIRU-BIRU KABUPATEN DELI SERDANG
SUMATERA UTARA
ABSTRAK
Telah dilakukan penelitian dengan judul Keanekaragaman Ikan di Perairan Sungai Sibiru-biru, Kecamatan Sibiru-biru, Kabupaten Deli Serdang, Sumatera Utara. Penelitian ini dilakukan dengan metode Purposive Sampling
yaitu empat stasiun penelitian yang berbeda berdasarkan aktivitas masyarakat. Pengambilan sampel dilakukan sebanyak 30 kali pengulangan pada masing-masing stasiun penelitian. Hasil penelitian menunjukkan Keanekaragaman Ikan di Sungai Sibiru-biru terdiri dari dua ordo, empat famili, enam genus dan tujuh species. Total kelimpahan ikan tertinggi terdapat pada stasiun empat yaitu 0,072 ind/m2 dan terendah terdapat pada stasiun satu yaitu 0,048 ind/m2. Keanekaragaman ikan tertinggi terdapat pada stasiun empat dengan nilai 1,36 dan terendah pada stasiun tiga yaitu 1,04. Jenis ikan yang ditemukan pada semua stasiun penelitian adalah Oreochromis niloticus, Hampala macrolepidota, Mystacoleucus marginatus, Tor soro, Tor tambroides,Channa striata, Oxyeleotris marmorata . Kecepatan arus, penetrasi cahaya dan intensitas cahaya berkorelasi signifikan terhadap keanekaragaman ikan.
Kata kunci: Ikan, Keanekaragaman, Sungai Sibiru - Biru
v
DIVERSITY OF FISH IN SIBIRU-BIRU RIVER DISTRICT SIBIRU-BIRU REGENCY 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.
Keywords: Diversity, Fish, Sibiru-biru
