Struktur Komunitas Mikroalga Air Tawar di Sungai Jangkok, Lombok Indonesia

Nining Purwati (Universitas Islam Negeri Mataram)
Ervina Titi Jayanti (Universitas Islam Negeri Mataram)
Miftahul Jannah (Universitas Islam Negeri Mataram)

Jurnal Penelitian Pendidikan IPA (JPPIPA)
Vol. 8 No. 4 (2022): October

The microalgae community structure in an aquatic ecosystem is strongly influenced by environmental factors. One of the rivers in Indonesia, located inhe island of Lombok, West Nusa Tenggara, is the Jangkok River. The Jangkok River is widely used by residents for activities, including industry, cultivation, waste disposal, and others. This study aimed to determine the structure of microalgae community in Jangkok River. This research was carried out with an exploration descriptive method by quantitative and qualitative approaches. Data were analyzed quantitatively by calculating the Shannon-Wiener diversity index (H’), Uniformity index (E) and Dominance index (d). The results showed that the diversity of microalgae was categorized as moderate (H' = 2.66), uniformity index (E = 0.66), and the dominance index indicate that there were no dominant species with a value (D = 0.13).