Electronic Theses and Dissertation

Udang air tawar merupakan komponen biotik penting dalam ekosistem perairan. Penelitian ini bertujuan untuk mengetahui keanekaragaman jenis udang air tawar di perairan Aceh Besar. Penelitian ini dilakukan pada bulan juli 2022. Metode yang digunakan dalam penentuan lokasi pengambilan sampel dengan Purposive sampling. Alat yang digunakan untuk menangkap udang air tawar adalah bubu dan seser. Analisis dilakukan meliputi Indeks Keanekaragaman (H’), Indeks Keseragaman (E), Indeks Dominansi (C) dan Kepadatan spesies (D). Berdasarkan hasil penelitian ditemukan 146 individu dari 14 spesies yaitu Macrobrachium nipponense, Macrobrachium neglectum, Macrobrachium oxyphilup, Macrobrachium malayanum, Macrobrachium idae, Macrobrachium lanchesteri, Macrobrachium callirrhoe, Macrobrachium equidens, Macrobrachium niphanae, Macrobrachium latidactylus, Caridina endohensis, Caridina gracilirostris, Caridina gracilipes, Caridina sumatrensis dengan Indeks Keanekaragaman (H’) = 1,27 (sedang), Indeks Keseragaman (E) = 0,76 (tinggi), Indeks Dominansi (C) = 0,36 (rendah) dan nilai kepadatan rata-rata berkisar antara 0,005-0,135 ind/m2. Kualitas air diperoleh nilai pH yaitu : 6,8 – 7,2, suhu berkisar antara 28,3°C – 31°C, kondisi perairan memenuhi Standar Baku Mutu PP No. 82 Th 2001 (kelas III) dan kecepatan arus 0,05 m/s – 0,2 m/s. Keanekaragaman udang di perairan Aceh Besar tergolong sedang dengan keseragaman yang tinggi sehingga tidak ada jenis udang yang mendominansi dan menunjukan kondisi perairan tersebut bagus.

Kata kunci : Identifikasi udang, keanekaragaman, kepadatan, kualitas air.

Freshwater shrimp are important biotic components in aquatic ecosystems. This study aims to determine the cultivation of freshwater shrimp species in Aceh Besar waters. This research was conducted in July 2022. The method used in selecting sampling locations was purposive sampling. The tools used to catch freshwater shrimp are traps and seser. The analysis was carried out including Diversity Index (H'), Uniformity Index (E), Dominance Index (C) and Species Density (D). Based on the results of the study, 146 individuals were found from 14 species, namely Macrobrachium nipponense, Macrobrachium neglectum, Macrobrachium oxyphilup, Macrobrachium malayanum, Macrobrachium idae, Macrobrachium lanchesteri, Macrobrachium callirrhoe, Macrobrachium equidens, Macrobrachium niphanae, Macrobrachium latidactylus, Caridina endohensis, Caridina gracilirostris, Caridina gracilipes, Caridina sumatrensis with Diversity Index (H') = 1.27 (medium), Uniformity Index (E) = 0.76 (high), Dominance Index (C) = 0.36 (low) and the average density value ranges from 0.005 -0.135 ind/m2. The water quality obtained by the pH value is: 6.8 – 7.2, the temperature ranges from 28.3°C – 31°C, the water conditions meet PP Quality Standard No. 82 Th 2001 (class III) and current speed of 0.05 m/s – 0.2 m/s. The diversity of shrimp in the waters of Aceh Besar is classified as moderate with high uniformity so that no shrimp species dominates and indicates good condition of the waters. Keywords: Identification of shrimp, density, density, water quality.