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All Journal Biota: Jurnal Ilmiah Ilmu-Ilmu Hayati
Nining Nursalim
Diponegoro Biodiversity Project, Diponegoro University
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology

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DNA Metabarcoding Reveals Marine Microbiota Composition as Indicators of Anthropogenic Impact in Karimunjawa National Park Al Mira; Aji Wahyu Anggoro; Rian Prasetia; Nenik Kholilah; Nining Nursalim; Muhammad Danie Al Malik; Widyastuti Widyastuti; Dyah Sulistyari; Rully Rahardian; Sapto Purnomo Putro; Ni Kadek Dita Cahyani
Biota : Jurnal Ilmiah Ilmu-Ilmu Hayati Vol 11, No 2 (2026): June 2026
Publisher : Universitas Atma Jaya Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24002/biota.v11i2.13185

Abstract

The Karimunjawa Islands in Central Java, Indonesia, are a designated marine national park experiencing increasing anthropogenic pressures. To address these concerns, this study investigates the diversity of marine microbiota in the coastal waters of the Karimunjawa Islands, utilizing DNA metabarcoding techniques to assess their potential as indicators of environmental change. Environmental DNA (eDNA) samples were collected from both high and low human-impacted site. Samples were analysed using Next Generation Sequencing (NGS) technology targeting the 16S gene. Analysis of these samples revealed a high diversity of marine microbiota, comprising 11 phyla, 11 classes, 11 orders, and 12 families. In locations subjected to anthropogenic pressures, the microbial community was dominated by potentially pathogenic taxa, particularly those from the families Arcobacteraceae and Nitrincolaceae, which are commonly associated with degraded water quality and adverse conditions for aquatic life. Conversely, low human-impacted sites exhibited a predominance of Cyanobiaceae, a group known for its ecological roles that support a healthy aquatic environment. The study's findings underscore the importance of marine microbiota as a valuable bioindicator for monitoring environmental health in coastal areas. These results highlight the need for ongoing monitoring and conservation efforts to preserve the delicate balance of the marine ecosystems in the Karimunjawa Islands.
Co-Authors Aji Wahyu Anggoro Al Mira Dyah Sulistyari Muhammad Danie Al Malik Nenik Kholilah Ni Kadek Dita Cahyani Rian Prasetia Rully Rahardian Sapto Purnomo Putro Widyastuti Widyastuti