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All Journal Jurnal Natur Indonesia Jurnal Perikanan dan Kelautan Berkala Perikanan Terubuk Jurnal Ilmu Perairan (Aquatic Science) Jurnal Online Mahasiswa (JOM) Bidang Perikanan dan Ilmu Kelautan Dinamisia: Jurnal Pengabdian Kepada Masyarakat Asian Journal of Aquatic Sciences Journal of Coastal and Ocean Sciences Jurnal Ilmu Komputer dan Sistem Komputer Terapan (JIKSTRA) Journal of Rural and Urban Community Empowerment Nanggroe: Journal Of Scholarly Service Nanggroe: Journal of Scholarly Service Jurnal Perikanan dan Kelautan Tropical Marine Environmental Sciences Jurnal Natur Indonesia
Afrizal Tanjung
Universitas Riau
Religion Agriculture, Biological Sciences & Forestry Humanities Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Decision Sciences, Operations Research & Management Earth & Planetary Sciences Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Environmental Science Health Professions Immunology & microbiology Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Library & Information Science Materials Science & Nanotechnology Medicine & Pharmacology Neuroscience Nursing Physics Public Health Social Sciences Other

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Habitat dan Distribusi Kerang Kepah (Polymesoda erosa) di Kawasan Mangrove Muara Sungai Tiram Kabupaten Padang Pariaman Sumatera Barat Wulandari, Ranti; Nasution, Syafruddin; Tanjung, Afrizal
Ilmu Perairan (Aquatic Science) Vol. 10 No. 1 (2022): Maret
Publisher : Lembaga Penelitian dan Pengabdian Kepada Masyarakat Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/

Abstract

Penelitian ini dilakukan pada Bulan Oktober 2019 di kawasan mangrove muara Sungai Tiram, Kabupaten Padang Pariaman, Sumatera Barat. Penelitian ini bertujuan untuk mengetahui karakteristik habitat dan distribusi kerang kepah (Polymesoda erosa) di kawasan mangrove muara Sungai Tiram. Metode yang digunakan pada penelitian ini adalah metode survei. Kawasan mangrove di lokasi penelitian dibagi menjadi 3 zona yaitu upper, middle, dan lower dengan jarak antar zona sejauh 30 m yang terbagi atas 5 titik sampling pada setiap zona dengan plot berukuran 1 x 1m dengan jarak masing-masing titik sampling sejauh 40 m. Hasil penelitian menunjukkan bahwa karakterisik habitat kerang kepah memiliki nilai rata-rata suhu 30°C, salinitas 6 ppt, pH 6, kandungan bahan organik total sedimen berkisar antara 2,48-2,98%, dan bahan padatan tersuspensi memiliki nilai berkisar anta 10-20 mg/L. Kelimpahan tergolong rendah dan tidak ada perbedaan kelimpahan antar zona pengamatan. Pola distribusi bersifat merata yang didominasi ukuran 3,52-3,91 cm.
Population Structure of Polymesoda expansa Shellfish in Mangrove Forest in Banglas Village, Meranti Islands Anggraini, Hafidah Novi; Nasution, Syafruddin; Tanjung, Afrizal
Jurnal Perikanan dan Kelautan Vol. 30 No. 2 (2025): June
Publisher : Fakultas Perikanan dan Kelautan Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/jpk.30.2.227-232

Abstract

Lokan (Polymesoda expansa) is a bivalve in mangrove forest areas with important ecological and economic values. The lokan population plays a role in maintaining water quality and is a source of livelihood for coastal communities. This study aims to analyze the abundance, distribution patterns, and frequency distribution of individual sizes of P. expansa in the mangrove forest of Banglas Village, Meranti Islands Regency. The research was conducted in December 2024 using a survey method to determine station locations by purposive sampling. Sampling was conducted at three stations, each consisting of three transects with plots measuring 1 × 1 m². The results showed that the highest abundance was found at Station III (±16.33 ± 5,508 ind/m²) and the lowest at Station II (8.33 ± 2,082 ind/m²). The distribution pattern of lokan at all stations is clustered (Morisita index value> 1). The frequency distribution of individual sizes showed the dominance of sizes 3.40-3.89 cm with 21 individuals. Abundance and distribution patterns of lokan are influenced by habitat conditions, human activities, and food availability. ANOVA test results showed no significant differences in abundance between stations, but there were significant differences between subzones. Knowledge of the population structure of P. expansa is vital for sustainable resource management in mangrove ecosystems
Analysis of the Relationship between Organic Material Content and Sediment Grain Size with Macrozoobentos Abundance in Sungai Selari Village, Bengkalis Regency Fahira, Adhita Fiky; Mubarak, Mubarak; Tanjung, Afrizal
Jurnal Perikanan dan Kelautan Vol. 30 No. 1 (2025): February
Publisher : Fakultas Perikanan dan Kelautan Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/jpk.30.1.13-17

Abstract

Sungai Selari Village is an area in Riau Province that features a high density of water activities, including a port where many fishing boats are moored and also serves as a transportation route for fishermen seeking fish. This activity can cause water pollution, which leads to the silting of waters through sedimentation. The activity of sediment input into a body of water can cause changes in the ecosystem, including alterations in sediment texture, organic matter content, and the abundance of macrozoobenthos biota. One organism that can be affected by differences in ecosystems is the macrozoobenthos due to its sedentary nature. This study aims to determine the type of sediment, grain size, and organic matter content, as well as their relationship with macrozoobenthos abundance. This research was conducted in March and April 2023, utilizing purposive sampling techniques at four stations in total. The samples taken were sedimentary substrates and macrozoobenthos. The results indicated that the size of the dominating sediment stalk, specifically the mud fraction, ranged from 14.72% to 71.25%. The types of macrozoobenthos found are grouped into two classes, namely Gastropods and bivalves. Individual abundances range from 0.3 - 4.4 ind/m2, with the highest abundance occurring at station 4 and the lowest occurring at station 1. The organic matter content ranges from 9.27- 34.2%. The relationship between organic matter content and macrozoobenthos abundance exhibits a moderate correlation of 0.506. The relationship between sediment grain size and macrozoobenthos abundance shows a fairly close correlation of 0.544
Potential Carbon Stock and Absorption in Mangroves in Penempul Village, Sungai Sembilan District, Dumai City, Riau Province Yuhanda, Sabina Dwi; Siregar, Yusni Ikhwan; Tanjung, Afrizal
Journal of Coastal and Ocean Sciences Vol. 6 No. 3 (2025): September
Publisher : Department of Marine Science, Faculty of Fisheries and Marine Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/jocos.6.3.189-196

Abstract

Global warming is caused by increased greenhouse gas emissions, particularly CO₂, and can be controlled through carbon sequestration by vegetation, including mangrove forests. The study was conducted in January and February 2025 in the mangrove area of Penempul Village, Sungai Sembilan District, Dumai City, Riau Province, to determine the density in relation to biomass, carbon stock, and CO₂ absorption, as well as to investigate the relationship between density and biomass, carbon stock, and CO₂ absorption. The method used in this study was a survey method with a purposive sampling technique, which involved measuring the diameter of mangrove tree trunks at chest height (DBH). Mangrove biomass calculations were performed using allometric equations, and biomass was converted into carbon stock and CO₂ absorption. The study results indicated the presence of 11 mangrove species, with average estimated biomass, carbon stock, and CO₂ absorption values of 521.84 tons/ha, 245.25 tons/ha, and 899.35 tons/ha, respectively. The ANOVA results showed significant differences (p > 0.05) between the three stations regarding biomass, carbon stock, and CO₂ absorption. Mangrove density had a weak correlation with biomass, carbon stock, and CO₂ absorption, with a correlation coefficient of 0.299.
Modeling of Water Surface Elevation Using MIKE 21 Based on Rupat Strait Bathymetric Data Ahmad, Alianisa; Mubarak, Mubarak; Tanjung, Afrizal; Rifardi, Rifardi; Ilahi, Ilham
Jurnal Natur Indonesia Vol. 23 No. 2 (2025): October
Publisher : Lembaga Penelitian dan Pengabdian Kepada Masyarakat Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/jnat.23.2.79-84

Abstract

The Rupat Strait, a strategically crucial marine channel separating Sumatra Island from Rupat Island, exhibits complex hydrodynamic characteristics influenced by tidal propagation from the adjacent Malacca Strait. As a vital shipping corridor, the strait's navigational safety is fundamentally governed by its bathymetric profile and tidal regime. This study implements an integrated methodological framework combining in situ bathymetric surveys with MIKE 21 hydrodynamic modeling to assess morphological dynamics quantitatively. Systematic validation of model outputs against field measurements revealed significant spatial variations in seafloor topography, including pronounced shallowing (>6.6 m) and substantial deepening (≤17 m) at distinct locations. Concurrent analysis of tidal data demonstrated extreme water level fluctuations, ranging from -2.36 m during the lowest astronomical tides to +6.28 m during peak tidal surges. These geomorphological alterations appear correlated with anthropogenic pressures, particularly intensive shipping traffic and coastal zone modifications, suggesting a coupled natural-anthropogenic forcing mechanism governing the strait's evolving morphodynamics. The findings highlight the critical need for ongoing monitoring to ensure maritime safety and sustainable coastal management in this rapidly changing marine environment
THE ROLE OF THE COMMUNITY IN ENVIRONMENTAL MANAGEMENT IN THE COASTAL AREA OF RUPAT DISTRICT Bathara, Lamun; Nedi, Syahril; Effendi, Irwan; NST, Musyirna Rahmah; Nasution, Tio Afandi; Tanjung, Afrizal
Asian Journal of Aquatic Sciences Vol. 8 No. 3 (2025): December
Publisher : Lembaga Penelitian dan Pengabdian Kepada Masyarakat Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/ajoas.8.3.364-372

Abstract

Coastal environmental problems in Rupat District cannot be resolved solely through a top-down approach or government intervention. This study was conducted in 2025 with the intention of comprehensively analyzing the role of the community in environmental management in the coastal areas of Rupat District, particularly on Ketapang and Lancah beaches. Through a systematic research approach, this study aims to identify the forms of community roles in coastal environmental management efforts, analyze factors that influence the level of community participation, describe the various challenges faced in implementing community-based environmental management, and formulate strategies for strengthening community roles that can be implemented sustainably. The method used in this study was a survey method with a total of 31 respondents, consisting of fishermen, seaweed farmers, fish traders, community leaders, and people involved in marine tourism activities. The results of the study can be concluded that community-based coastal environmental management has enormous potential but faces complex structural challenges
Co-Authors ', Intan AA Sudharmawan, AA Abdurrahman, M. Adila, Melin Afdol, Muhammad Afrilianti, Azyarah Ahmad, Alianisa Al-Izhar, Muhammad Alhadad, Ilham Anggara, Bob Anggraeni, Riski Anggraini, Hafidah Novi Apriani, Cici Aprilisty, Fiolla Aras Mulyadi Arliansyah, Prayoga Armani, Shanya Puthi Arsyad, Fadila Asma Husna Putri Asma Ul Husna Putri Asmawi, Dandi Aurhariyani, Nisha Basiluddin, Fadhlan Bona Juandi Chatarina Umbul Wahyuni Cici Lestari Manurung Deddy Bahagia Manik Dedi . Deski, Alwiandra Dessy Yoswaty Dewi Sujani Adithiya Dimas Agung Guntara Dodik Febriyantoro, Dodik Dony Ingot Panjaitan Efriyeldi, Efriyeldi Eka Saputra Elizal Elizal Elizal, Elizal Elvi Hartati Anggraini Fachry Abda El Rahman Fadhil, Mohd. Isfan Fahira, Adhita Fiky Fahmia, Rani Faida, Nurul Amanda fajar sidik Fajri, Ferli Farid Ramadan Febriani, Riska Feliatra Ferdi Fajri Fernando, Aldo Firmansyah Firmansyah Fitrimeutia, Chindi Giovano Aldizia Gurning, Misael Gusfi, Melly Gusti, Melly Hafidza, Amanda Hagabean, Mora Hapzi Ali Harif, Ichwanul Harpani, Harpani Hayen, Nabilla Syima Putri Nur Helda Helda Helda Helda Henni Syawal Ichwanul Harif Ide Rival Dianta Sitepu Ilbi Candra Yani Ilcia Teshi Diafana Ilham Apriandi Ilham Ilahi Irvan Dwi Putra Irvina Nurachmi Irwan Effendi Irwan Irwan Isma, Muhammad Fauzan Ivyna Clarisa Tampubolon Jean Fattikawa Siahaan, Jean Fattikawa Jeprin Hasibuan Joko Samiaji Judita Grace Merry Nainggolan Juliando Saputra Jung jung Maranata Junika Cecelia Putri Kaprisal, Kaprisal Khaerunnisa, Dwi Rani Khaidir Khaidir Khoiriyah, Latifatul Kusuma, Jaya Adi Lamun Bathara Limbong, Sherina Br Lutfhi, Muhammad Maatitawaer, Natasya Debora C Manalu, Govinda Hendra Manalu, Lili Yanti Mardiono Rajagukguk Marya Ulfa Marya Ulfa Maulana, Alfito Mawaddah, Fauzana Jihan Mayang Shintana, Mayang Mendrofa, Albertus Andika Mhd. Fadhillah, Mhd. Fadhillah Mirna Kumala Sari Dalimunthe Mochammad Imron Awalludin Mubarak Mubarak Mubarok, Ihsan Dwi Muffadillah, Rehan Mufidah, Marhamah Nurul Mukramin, Ibnu Murfi, Indah Permata Murni, Richy Restia Musrifin Ghalib Mustofa, Adelia Musyirna Rahmah Nasution Nainggolan, Judita Grace Merry Nasution, Syafrudin Nasution, Tio Afandi Nico Rahmadany Novhitasari Simbolon Nuraini Nuraini Nurhaliza, Hani Oriza, Syucitra Padli, Fery Pertika, Dinda Putra, Jefri Eliyas Putra, Rayhan Dwi Putri, Asma Ul Husna Putri, Dian Seftiani Putri, Rahmania Putri, Salsabila Azharia Putri, Uci Kurnia Rafi Novendri Kaslan Rahma, Alifia Al Ramadhan Ramadhan Ramadhan Ramadhan Ranti Wulandari Raudhatul Jannah Remi Fiter Riani, Anita Eva Rifardi Rio Syahputra Rivilgo, Wawan Rizki, Sofia Wanda Romanta A. Tamba Romanta Andrianus Tamba Ronaldy Saputra Simamora, Ronaldy Saputra Rosanti Dina Raya Rosyidin, Hidayatul Rusadi, M Dio Eigmar Saadah, Isyatis Sahira, Nur Sastrawan Barus Satria Putra Anggara Setiawan, Ilham Siagian, Yosua Siahaan, Vani Oktavia Sibarani, Rosari Siburian, Hendra Yosep Sihotang, Usia Xoros Silaban, Tulus Gandra Saputra Simanjuntak, Naomi Sinaga, Andri Decshana Sinaga, Nella Asima Br. Siregar, Vonny Aprilia Sitompul, Krivide Sofyan Husein Siregar Solistio, Ardiken Afri Sri Wira Rahayu Ningsih Syafruddin Nasution Syafruddin Syafruddin Syahril Nedi Syahrizal Syahrizal Syahrul Nedi, Syahrul Tampubolon, Kristanti Thamrin Thamrin Thamrin Thamrin Thamrin Thamrin Thamrin Thamrin Utama, Rinol Putra Utari, Vannesa Vani Oktavia Siahaan Victor Simanungkalit Winata, Bisma Panca Wulandari, Ranti Yanti, Lola Feby Yosefa, Bella Yuhanda, Sabina Dwi Yulia, Murni Yusni Ikhwan Yusni Ikhwan Siregar Zani, Rahma Zevira, Bella Permata Zulfa, Randa Pratama Zulkifli ' Zulkifli Zulkifli Zulpikar '