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All Journal Akuatik: Jurnal Sumberdaya Perairan
M Rizza Muftiadi
Manajemen Sumberdaya Perairan
Agriculture, Biological Sciences & Forestry Environmental Science

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STRUKTUR KOMUNITAS IKAN PADA PADANG LAMUN DI PERAIRAN TUKAK KABUPATEN BANGKA SELATAN Tiara Tiara; Andi Gustomi; M Rizza Muftiadi; Wahyu Adi; Jemi Ferizal; Okto Supratman
Akuatik: Jurnal Sumberdaya Perairan Vol 19 No 2 (2025): AKUATIK : Jurnal Sumberdaya Perairan
Publisher : Department of Aquatic Resources Management, Faculty of Agriculture, Fisheries, and Biology, University of Bangka Belitung

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Seagrass beds play an important role for various fish species that have high ecological and economic value by providing a place to find food, nurse and grow. This study aims to examine fish species diversity, composition, abundance, and dominance, as well as analyze the relationship between seagrass cover and fish abundance in the Tukak Waters, South Bangka Regency. The research was conducted in June 2024 at four predetermined stations. Seagrass data collection was carried out using the quadrat transect method to determine the percentage of cover, while fish data were collected using the swept area (sweep) method. The results showed that across the four observed stations, a total of 823 fish individuals were identified, comprising 23 species from 18 families, namely Carangidae, Chaetodontidae, Chanidae, Gerreidae, Gobiidae, Hemiramphidae, Labridae, Leoignathidae, Lethrinidae, Lutjanidae, Monachantidae, Mugilidae, Mullidae, Plotosidae, Siganidae, Shpyraenidae, Terapontidae, and Triacanthidae. The species with the highest composition was Leoignathus equula, accounting for 44.59% of the total population with 367 individuals recorded. The recorded fish abundance reached 1499 individuals per hectare, with a moderate level of diversity, relatively high uniformity, and a low dominance index. Furthermore, this study indicates that fish abundance is correlated with the percentage of seagrass cover, where a higher seagrass cover percentage corresponds to a higher fish abundance in the area.
Analisis Struktur Komunitas Dan Pola Sebaran Bivalvia di Perairan Pantai Mudong  Kecamatan Manggar Kabupaten Belitung Timur Febrianto Febrianto; Arthur M Farhaby; M Rizza Muftiadi
Akuatik: Jurnal Sumberdaya Perairan Vol 20 No 1 (2026): AKUATIK : Jurnal Sumberdaya Perairan
Publisher : Department of Aquatic Resources Management, Faculty of Agriculture, Fisheries, and Biology, University of Bangka Belitung

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Kabupaten Belitung Timur yang memiliki 169 km panjang garis pantai menjadikan sumber daya alam hayati. Bivalvia merupakan salah satu mollusca yang berperan penting dalam ekosistem pesisir. Penelitian ini bertujuan untuk menganalisis struktur komunitas bivalvia yang mencakup kepadatan, keanekaragaman, dan dominansi spesies, serta pola sebarannya di wilayah penelitian. Selain itu, penelitian ini juga diarahkan untuk melihat keterkaitan antara kondisi lingkungan perairan dengan distribusi bivalvia di habitat tersebut.  Penelitian ini dilakukan pada Januari - Mei 2025 Metode yang dipakai adalah metode purposive sampling dan systematic random sampling . Analisis data yang diambil struktur komunitas, pola sebaran dan principal component analysis. Hasil penelitian ini terdapat 9 jenis spesies bivalvia yang yang dominasi oleh Meretrix meretrix(1037 ind/ha C=0,592) pada stasiun 3, keanekaragaman dan keseragaman tertinggi stasiun 1 (H’=1,946 E=1). Pola sebaran G. tumidum mengelompok (ip=0,480) pada  7 spesies lainnya merata (ip=negatif). Meretrix meretrix berasosiasi dengan TSS, suhu, kecerahan, dan debu, G. tumidum dan C. remies berasosiasi arus, BOT, dan liat. Marcia opima, Donax faba, Tellinides timorensis, Anadara gubernaculum Donax fibula, Tellinides timorensis, dan Anadara inaequivalvis  berasosiasi DO, pasir, salinitas, dan pH.
Co-Authors Andi Gustomi Arthur M Farhaby Febrianto Febrianto Jemi Ferizal Tiara Tiara Wahyu Adi