Study of Fish Community in Ulak Lia Lake Sekayu, Musi Banyuasin Regency

Abstract

This study aims to determine fish's diversity, abundance, and dominance in Ulak Lia Lake, Sekayu District. This research was conducted at Lake Ulak Lia, Sekayu District, Musi Banyuasin Regency, from February to March 2021. The fish sampling method was performed by direct catching at three predetermined observation stations using nets. Netting was carried out for 12 hours, taking catches with traps that have been installed in the morning from 7 a.m. to 9 a.m., depending on conditions or weather. Sampling was marked using a bamboo buffer and the help of the Global Positioning System (GPS). The results showed that the Diversity Index ranged from 1.85 to 1.91 indicating low diversity. The fish abundance index ranged from 30.16 to 36.87 indicating low fish abundance. Where the Dominance Index 0.71-0.72 shows a moderate dominance index. Meanwhile, the dominant fish in Ulak Lia Lake is the Sapil fish (Helostoma temminckii).

Struktur Komunitas Lichenes di Kawasan Gunung Galunggung Berdasarkan Indeks Ekologi

“…Penghitungan indeks ekologi juga dilakukan, meliputi indeks keanekaragaman Shannon-Wiener (H'), indeks kemerataan (E), indeks kekayaan jenis (R), dan indeks dominansi (D). Indeks Keanekaragaman (H') Helmizuryani et al (2021), indeks keanekaragaman dapat dihitung dengan menggunakan rumus indeks keanekaragaman Shannon-Wiener, rumus indeks keanekaragaman Shannon-Wiener berikut ini. Nilai dari E dapat disimpulkan sebagai berikut: E < 0,4 = Kemerataan populasi rendah; 0,4 < E 0,6 = Kemerataan populasi tinggi; dan E > 0,6 = Kemerataan populasi tinggi.…”

“…semua jenis Helmizuryani et al (2021),. indeks keanekaragaman Shannon-Wiener memiliki kisaran nilai indeks keanekaragaman sebagai berikut: H` < 1 = Keanekaragaman kecil dan kestabilan komunitas rendah; 1 < H` < 3 = Keanekaragaman sedang dan kestabilan komunitas sedang; dan H` > 3 = Keanekaragaman tinggi dan kestabilan komunitas tinggi.Indeks Kemerataan (E)Menurut Anwari et al (2021), nilai indeks kemerataan jenis dapat menggambarkan kestabilan suatu komunitas.…”