Habitat characteristics and biodiversity of nekton in the Alas-Singkil River Basin, Northern Sumatra, Indonesia
##plugins.themes.bootstrap3.article.main##
Abstract
Abstract. Muhtadi A, Leidonald R, Fauzia AD. 2023. Habitat characteristics and biodiversity of nekton in the Alas-Singkil River Basin, Northern Sumatra, Indonesia. Biodiversitas 24: 3673-3689. The Alas-Singkil watershed ecosystem is an essential habitat for the diversity of flora and fauna in the North Sumatra region. This study aims to describe the habitat characteristics and distribution of ichthyofauna in the Alas-Singkil watershed. Observations and data collection were carried out in 2021-2022 in all river segments in the Alas-Singkil watershed, including the downstream, swamp, oxbow lake, middle, upstream, and tributaries. Habitat characteristics in the Alas-Singkil watershed are very diverse. Some swamps in the main river's lower to middle reaches allow the ichthyofauna to migrate laterally. In the middle of the main tributaries (sub-watersheds) to the upstream (most) have habitat characteristics dominated by sedimentary rock substrates with relatively moderate-strong currents. The upper reaches of the main river are dominated by rocky substrates with clear, low-medium flowing waters. During observations in the Alas-Singkil watershed, 99 species of fish from 39 families, 9 species of shrimp, 1 species of freshwater crab, 1 species of freshwater turtle, and 1 species of crocodile were collected. Spotted barb (Barbodes binotatus), Blue panchax (Aplocheilus panchax), and Mahseer fish are fishes often found and widely distributed in the Alas-Singkil watershed. The nekton found in the Alas-Singkil watershed is included in the Least Concern (LC) category at 71% and Data Deficient (DD) at 14%. However, there are 2 species (2%) in the Endangered (EN) category and 6 species (5%) in the Vulnerable (VU) category; Ompok brevirictus and Clarias microspilus are species categorized as Endangered Species.
##plugins.themes.bootstrap3.article.details##
Most read articles by the same author(s)
- AHMAD MUHTADI, AHYAR PULUNGAN, NURMAIYAH, AZIZAH FADLHIN, PUPUT MELATI, RENI ZULIKA SINAGA, RAIHAN ULIYA, MIFTAH RIZKI, NUR ROHIM, DAYUN IFANDA, RUSDI LEIDONALD, HESTI WAHYUNINGSIH, QADAR HASANI, The dynamics of the plankton community on Lake Siombak, a tropical tidal lake in North Sumatra, Indonesia , Biodiversitas Journal of Biological Diversity: Vol. 21 No. 8 (2020)
- DESRITA DESRITA, AHMAD MUHTADI, ISTEN SWENO TAMBA, JENI ARIYANTI, RINA DRITA SIBAGARIANG, Community structure of nekton in the upstream of Wampu Watershed, North Sumatra, Indonesia , Biodiversitas Journal of Biological Diversity: Vol. 19 No. 4 (2018)
- AHMAD MUHTADI, MUHAMMAD NUR, HUSAIN LATUCONSINA, THOMAS HIDAYAT, Population dynamics and feeding habit of Oreochromis niloticus and O. mossambicus in Siombak Tropical Coastal Lake, North Sumatra, Indonesia , Biodiversitas Journal of Biological Diversity: Vol. 23 No. 1 (2022)
- AHMAD MUHTADI, RUSDI LEIDONALD, OKTI YOLANDA, RUHHIYAH HARAHAP, NENENG PRATIWI MATONDANG, KHAISYA PUTRI, LAURA F. M. SIMAMORA, GABRIYELLA SITOMPUL, Short Communication: The biodiversity of aquatic organisms in Anak Laut Lake, Aceh Singkil District, Indonesia , Biodiversitas Journal of Biological Diversity: Vol. 24 No. 9 (2023)
- AMANATUL FADHILAH, RUSDI LEIDONALD, IPANNA ENGGAR SUSETYA , ASTRID FAUZIA DEWINTA, Analysis of the relationship between the ENSO phenomenon, Net Primary Productivity and catches of yellowfin tuna in Sibolga Waters, Indonesia , Biodiversitas Journal of Biological Diversity: Vol. 23 No. 9 (2022)
- QADAR HASANI, MAULID WAHID YUSUP, RACHMAD CAESARIO, DAVID JULIAN, AHMAD MUHTADI, Autoecology of Ceratium furca and Chaetoceros didymus as potential harmful algal blooms in tourism and aquaculture sites at Teluk Pandan Bay, Lampung, Indonesia , Biodiversitas Journal of Biological Diversity: Vol. 23 No. 11 (2022)
- NUR ROHIM, SULISTIONO, FREDINAN YULIANDA, AHMAD MUHTADI, Diversity and ecological drivers of fish in Singkil Swamp Wildlife Reserve, Aceh, Indonesia , Biodiversitas Journal of Biological Diversity: Vol. 25 No. 7 (2024)