Keanekaragaman Jenis Ikan di Hilir Sungai Palu Hantu Kecamatan Medan Marelan Kota Medan Provinsi Sumatera Utara

Abstract

This study of Fish Species Diversity in the DownStrem Palu Hantu River, Medan Marelan District, Medan City, North Sumatra Province aims to study the diversity of fish species and their relationship with physicochemical parameters in the Palu Hantu River, Medan Marelan District, Medan City, North Sumatra Province. Sampling was carried out at three different stations. The results of the study found 10 fish species consisting of 4 orders, 9 families, and 9 genera. The highest diversity index was found at station III (0.233), followed by station II (0.183), and the lowest at station I (0.074). The highest fish abundance was found at station III (46.5 ind/ha) and the lowest at station I (8.5 ind/ha). Principal Component Analysis (PCA) showed that brightness, DO, and pH had a strong positive correlation with fish diversity, while temperature, current speed, and salinity were negatively correlated. Environmental factors such as industrial activities, habitat conditions, and water quality play an important role in determining fish diversity and abundance at the study site. The results of this study provide important information about the condition of the Palu Hantu River ecosystem and can be used as a basis for the management and conservation of fishery resources in the area.