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KEANEKARAGAMAN IKAN DI BAGIAN HULU SUNGAI
HORAS, KECAMATAN HATONDUHAN, KABUPATEN
SIMALUNGUN, SUMATERA UTARA
ABSTRAK
Penelitian mengenai keanekaragaman ikan telah dilakukan di sungai horas, kecamatan hatonduhan, kabupaten simalungun pada bulan Maret 2016. Penentuan titik lokasi penelitian menggunakan metode “Purposive Sampling” dengan menentukan tiga stasiun berdasarkan aktivitas masyarakat di Sungai tersebut. Ada enam spesies ikan yang ditemukan di lokasi penelitian yang diklasifikasikan ke dalam 1 kelas, 3 ordo (Cypriniformes, Perciformes, Siluriformes) dan 4 famili (Cyprinidae, Channidae, Mastacembellidae dan Clariidae). Kepadatan tertinggi ditemukan pada stasiun 2 dengan nilai 0,043 ind/m2 dan terendah pada stasiun 3 dengan nilai 0,032 ind/m2. Indeks keanekaragaman dari ketiga stasiun tergolong rendah yaitu berkisar 1,15-1,77. Berdasarkan hasil analisis korelasi pearson, nilai suhu, penetrasi cahaya, dan pH berkorelasi sangat kuat terhadap keanekaragaman ikan.
Kata kunci: Faktor fisik-kimia, Keanekaragaman, Sungai Horas
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THE DIVERSITY OF FISH IN THE UPSTREAM OF HORAS
RIVER, DISTRICT HATONDUHAN, SIMALUNGUN
REGENCY, NORTH SUMATERA
ABSTRACT
The study on the diversity of fish has been conducted at Horas river, district Hatonduhan, Simalungun regency during March 2016. Purposive sampling method was used to determine three stasions of the research based on community activities at the river. The research found six genera of fishes, classified into one class, three ordos (Perciformes, Cypriniformes, Siluriformes) and four families (Cyprinidae, Channidae, Mastacembellidae dan Clariidae). The highest density was found at 2nd stasion with the value of 0,043 ind/m2 and the lowest was found at 3rd stasion with the value 0,032 ind/m2. Diversity index from all stations were low with ranges from 1,15 to 1,77. Pearson correlation analysis indicated that temperature, light penetration, pH value are strongly correlated with the diversity of fishes.
Keywords : Physion-Chemical factors, Diversity, Horas River
