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All Journal Journal of Tropical Life Science : International Journal of Theoretical, Experimental, and Applied Life Sciences JRST (Jurnal Riset Sains dan Teknologi)
Firdausi, Muhammad Azka Dzikri
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Agriculture, Biological Sciences & Forestry Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Engineering Environmental Science

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Kelimpahan Sampah Laut dan Mikroplastik di Pantai Serang, Kabupaten Blitar, Jawa Timur Firdausi, Muhammad Azka Dzikri; Syananta, Citra; Maheswari, Maretha Dewi; Sudono, Chynta Veyra Aulia; Siburian, Andreas Steve Jonathan; Wahyudi, Angger Dwiky; Yona, Defri
JRST (Jurnal Riset Sains dan Teknologi) Volume 8 No. 2 September 2024: JRST
Publisher : Universitas Muhammadiyah Purwokerto

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30595/jrst.v8i2.21144

Abstract

Pantai Serang merupakan pantai pariwisata yang terletak di Kabupaten Blitar, Jawa Timur. Kegiatan pariwisata ini dapat memicu pencemaran sampah laut. Sampah laut yang mencemari pantai dikategorikan menjadi sampah plastik, kertas, kayu, kain, kaca, logam, karet, dan bahan berbahaya. Sampah plastik yang banyak ditemukan juga dapat terdegradasi menjadi mikroplastik yang dapat dijumpai dengan variasi bentuk, ukuran, dan warna yang beragam. Sampah laut dan mikroplastik dapat menimbulkan efek buruk terhadap lingkungan dan biota laut. Tujuan penelitian adalah untuk mengetahui kelimpahan sampah laut dan mikroplastik di Pantai Serang, Kabupaten Blitar, Jawa Timur. Sampel sampah laut dan mikroplastik dikumpulkan dengan metode random sampling pada lima titik sampling yang berbeda menggunakan transek kuadrat. Sampel sampah laut dan mikroplastik dianalisis secara visual berdasarkan jenis dan ukurannya. Hasil analisis menunjukkan bahwa di Pantai Serang, Kabupaten Blitar, Jawa Timur terdapat sampah laut dan mikroplastik dengan ukuran 1–5 mm atau large microplastic particles (LMP). Sampah laut yang ditemukan didominasi ukuran 5-10 cm. Sampah plastik mendominasi kelimpahan sampah laut di Pantai Serang (75.49%) disusul dengan kertas (18.87%), karet (3.31%), dan lainnya (<1%). Hal ini juga memicu banyaknya pencemaran mikroplastik. Mikroplastik dengan ukuran 1–5 mm yang terdapat pada Pantai Serang, Kabupaten Blitar didominasi jenis foam (57%) yang kemudian disusul dengan fragment (33%) dan film (10%). Kelimpahan sampah laut dan mikroplastik utamanya disebabkan oleh aktivitas antropogenik pariwisata dan perikanan tangkap.
Structure of Mangrove and Associated Macrobenthos Communities Linked to Bioturbation Activities (Case Study: Northern Coast of East Java, Indonesia) Firdausi, Muhammad Azka Dzikri; Andristi, Adinda Martha Putri; Danendra, Hafiz Arya; Sari, Syarifah Hikmah Julinda; Saputra, Dhira Khurniawan; Yona, Defri
Journal of Tropical Life Science Vol. 16 No. 2 (2026)
Publisher : Journal of Tropical Life Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11594/jtls.16.02.03

Abstract

Mangrove ecosystems and their associated macrobenthos interact closely through bioturbation, a key process that regulates sediment reworking, oxygen exchange, and nutrient cycling. This study examined how variations in mangrove and macrobenthos community structure relate to bioturbation among the studied mangrove ecosystems. Sampling was conducted across four mangrove ecosystems along the northern coast of East Java. A total of six mangrove species were recorded, dominated by Rhizophoraceae, along with 40 associated macrobenthos species dominated by Gastropoda and Malacostraca. Mangrove stand density ranged from 633.3 to 1300 ind/ha and did not differ significantly among sites, indicating relatively stable vegetation structure despite low diversity. Conversely, macrobenthos density varied significantly across sites, ranging from 7.44 to 26.56 ind/m². The macrobenthos community showed moderate diversity but generally reflected stable ecological conditions. Burrowing hole density differed significantly among sites, ranging from 34.11 to 70.44 holes/m², indicating spatial variation in potential bioturbation intensity. Correlation analysis revealed that Malacostraca abundance had the strongest relationship with burrow density, indicating a moderate positive association and highlighting the potential role of Malacostraca as the main contributors to bioturbation processes in mangrove ecosystems. Overall, this finding indicates that bioturbation potential does not depend on a single factor but rather arises from the interplay among vegetation structure, macrobenthos community composition, and environmental conditions. Maintaining habitat and ecosystem conditions is essential for supporting functionally important macrobenthos groups and sustaining sediment-related ecosystem processes. Conservation and restoration efforts should therefore consider both vegetation structure and associated faunal communities.
Co-Authors Andristi, Adinda Martha Putri Danendra, Hafiz Arya Defri Yona Maheswari, Maretha Dewi Saputra, Dhira Kurniawan Siburian, Andreas Steve Jonathan Sudono, Chynta Veyra Aulia Syananta, Citra Syarifah Hikmah Julinda Sari Wahyudi, Angger Dwiky