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All Journal Maspari Journal Jurnal Perikanan dan Kelautan Berkala Perikanan Terubuk Jurnal Ilmu Lingkungan Jurnal Ilmu Perairan (Aquatic Science) Maspari Journal Jurnal Online Mahasiswa (JOM) Bidang Perikanan dan Ilmu Kelautan Indonesian Journal Of Environmental Science and Technology Squalen Bulletin of Marine and Fisheries Postharvest and Biotechnology Asian Journal of Aquatic Sciences Jurnal Pengabdian Masyarakat Multidisiplin Unri Conference Series: Community Engagement Jurnal Zona Journal of Coastal and Ocean Sciences JAGO TOLIS : Jurnal Agrokompleks Tolis Journal of Rural and Urban Community Empowerment Jurnal Perikanan dan Kelautan Tropical Marine Environmental Sciences Jurnal Natur Indonesia
Irvina Nurachmi
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Aerospace Engineering Agriculture, Biological Sciences & Forestry Humanities Astronomy Automotive Engineering Biochemistry, Genetics & Molecular Biology Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Earth & Planetary Sciences Education Electrical & Electronics Engineering Energy Environmental Science Immunology & microbiology Law, Crime, Criminology & Criminal Justice Materials Science & Nanotechnology Mathematics Medicine & Pharmacology Nursing Physics Public Health Social Sciences Other

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The Relationship between Total Oil Content in Sediment and the Abundance of Benthic Diatoms in the Waters of Pangkalan Jambi, Bengkalis, Riau Jihan Fitri Muthiah Rahmah; Irvina Nurrachmi; Sefni Hendris
Jurnal Perikanan dan Kelautan Vol. 31 No. 2 (2026): June
Publisher : Fakultas Perikanan dan Kelautan Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/jpk.31.2.202-208

Abstract

The research was conducted in December 2025 in the waters of Pangkalan Jambi. The purpose of this research was to analyze the total oil content in sediments, calculate the abundance of benthic diatoms, and explain the relationship between the total oil content in sediment and the abundance of benthic diatoms. The research uses a survey method; three sampling stations with three replications in each station were surveyed. The results showed that the average oil concentration in sediments exceeded the thresholds set by the Department of Water Resources Quality Assurance/Quality Control Program and the Australian and New Zealand Environment and Conservation Council. The results of the calculation of the abundance of benthic diatoms ranged from 2196.14 ind/cm2 to 3362.84 ind/cm2. The highest abundance is around small ports, while the lowest abundance is around the river mouth. Based on simple linear regression, the relationship between sediment oil content and benthic diatom abundance was y = 8281.7 – 1.1367x, with a coefficient of determination (R2)= 0.875 and a correlation coefficient (r) = 0.935. The value of r states a moderate relationship with a constant value b, which is negative, indicating that the higher the oil content, the lower the abundance of benthic diatoms in sediments.
REHABILITASI MANGROVE BERBASIS EDUKASI BERSAMA SISWA SMK PERIKANAN DUMAI TAHUN 2024 Nabila Afifah Azuga; Sefni Hendris; Ilham Ilahi; Benny Heltonika; Dessy Yoswaty; Irvina Nurrachmi; Nursyirwani Nursyirwani; Yusni Ikhwan Siregar
Jurnal Pengabdian Masyarakat Multidisiplin Vol 8 No 3 (2025): Juni
Publisher : LPPM Universitas Abdurrab

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36341/jpm.v8i3.6174

Abstract

Coastal abrasion in Purnama Sub-district, Dumai City, Riau Province is considered severe, with erosion exceeding 3 meters per year. This situation calls for urgent mangrove rehabilitation as an ecological mitigation effort. This community service activity involved 100 students from Dumai Fisheries Vocational High School, along with lecturers and students from the Belukap Mangrove Club (BMC), Department of Marine Science, University of Riau. The program consisted of two stages: classroom-based education on mangrove ecosystem functions, coastal conservation, and planting techniques; followed by the planting of 500 Rhizophora apiculata seedlings in the Purnama Mangrove Forest. From the evaluation results showed an increase in students' average knowledge scores over 25.7%. Participation was also high: 100% attendance and documentation, 85% engagement in discussions, and 95% in the planting activity. Students expressed positive perceptions, particularly regarding the hands-on learning experience and their increased understanding of mangrove importance. These results suggest that combining environmental education with field practice effectively enhances awareness and builds students’ capacity in coastal conservation. Collaboration among academics, vocational schools, communities, and local government was a key factor in the program’s success and offers a replicable model for similar initiatives. This program supports the achievement of Sustainable Development Goals (SDGs) 4 and 13, focusing on quality education and climate change adaptation.
ASSESSMENT OF WATER QUALITY BASED ON NITRATE, PHOSPHATE, AND AMMONIA CONCENTRATIONS IN BURUK BAKUL VILLAGE, BENGKALIS, RIAU Sefni Hendris; Dessy Yoswaty; Irvina Nurrachmi; Nabila Afifah Azuga; Bella Billiant J Ananta Kambaren; Rianti Putri; Ardi Gustri Purbata
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.8.3.391-397

Abstract

Coastal ecosystems are highly sensitive to nutrient enrichment, particularly from land-based activities and aquaculture effluents, which contribute to water quality degradation. This study evaluated the concentrations of nitrate, ammonia, and phosphate in the coastal waters of Buruk Bakul Village, Bengkalis, Riau Province, Indonesia. Water samples were collected from four representative stations in August 2025: a river estuary, a shrimp pond, a mangrove rehabilitation site, and a natural mangrove forest. The analysis was conducted using spectrophotometric methods in accordance with the Indonesian National Standards (SNI). Results indicated that nitrate concentrations ranged from 0.0822 to 0.1932 mg/L, ammonia from 0.5705 to 1.7338 mg/L, and phosphate from 0.0845 to 0.299 mg/L. All parameters exceeded the seawater quality standards for marine biota established by the Decree of the Minister of Environment No. 51/2004, indicating a significant anthropogenic influence. The river estuary recorded the highest nitrate and phosphate levels, reflecting inputs from land runoff and domestic waste, while ammonia peaked in the shrimp pond due to aquaculture discharge. Nutrient levels in mangrove-associated stations were lower but still above the threshold, indicating that mangrove ecosystems provide some capacity to retain and transform nutrients, although insufficient for full remediation. Elevated nutrient concentrations pose ecological risks, such as eutrophication and algal blooms, which may disrupt biodiversity and fisheries productivity. This study emphasizes the urgency of improving aquaculture waste management, reducing land-derived nutrient loading, and strengthening mangrove conservation and rehabilitation as integrated strategies to sustain coastal ecosystem health in Buruk Bakul and similar regions. These findings provide a baseline for nutrient management and coastal rehabilitation strategies in western Indonesian waters
Sebaran Nitrat, Fosfat, dan Kelimpahan Fitoplankton di Perairan Muara Sungai Bukit Batu Kabupaten Bengkalis, Riau Dinda Nurbaiti; Syahril Nedi; Irvina Nurrachmi
Ilmu Perairan (Aquatic Science) Vol. 14 No. 1 (2026): Maret
Publisher : Lembaga Penelitian dan Pengabdian Kepada Masyarakat Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/jipas.14.1.10-20

Abstract

Penelitian ini dilaksanakan pada bulan Januari 2025. Bertujuan untuk mengetahui sebaran konsentrasi nitrat, fosfat, dan kelimpahan fitoplankton pada perairan muara Sungai Bukit Batu, Kabupaten Bengkalis, Provinsi Riau. Penelitian ini menggunakan metode survei lapangan dan pengambilan sampel secara langsung, kemudian sampel dianalisis di laboratorium. Sampel diambil pada lima titik sampling yang dilakukan pada saat pasang dan surut. Hasil dari penelitain ini diketahui terdapat 21 spesies fitoplankton yang dapat teridentifikasi di perairan muara Sungai Bukit Batu, dimana didominasi oleh kelas Bacillariophyceae. Sebaran tertinggi konsentrasi nitrat dan fosfat pada saat pasang berada pada daerah muara. Sedangkan saat surut sebaran konsentrasi nitrat dan fosfat tertinggi berada pada daerah selat. Untuk sebaran kelimpahan fitoplankton pada saat pasang dan surut kelimpahan tertinggi berada pada daerah muara dan kelimpahan terendah berada pada daerah selat
Hubungan Nitrat dan Fosfat dengan Kelimpahan Fitoplankton di Perairan Selat Air Hitam, Kepulauan Meranti, Provinsi Riau Eva Syukriani; Irvina Nurrachmi; Sefni Hendris
JAGO TOLIS : Jurnal Agrokompleks Tolis Vol 6 No 3 (2026): Juni - September (IN PROGRESS)
Publisher : Universitas Madako Tolitoli

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56630/jago.v6i3.1656

Abstract

Penelitian ini dilakukan pada bulan Desember 2025 di Perairan Selat Air Hitam, Kepulauan Meranti, Provinsi Riau. Tujuan Penelitian ini untuk menganalisis konsentrasi nitrat, fosfat, dan kelimpahan fitoplankton, serta mengkaji hubungan nitrat dan fosfat dengan kelimpahan fitoplankton di Perairan Selat Air Hitam. Metode yang digunakan adalah metode survei dengan teknik purposive sampling pada tiga stasiun pengamatan saat kondisi air pasang. Analisis sampel nitrat dan fosfat diukur menggunakan spektrofotometer, sedangkan kelimpahan fitoplankton dihitung menggunakan rumus modifikasi Lackey Drop Microtransecting Methods melalui pengamatan mikroskop 12 lapang pandang. Analisis data dilakukan secara deskriptif dan statistik menggunakan Uji Anova serta Uji Regresi Linear Berganda. Hasil penelitian menunjukkan konsentrasi rata-rata nitrat berkisar antara 0,103–0,190 mg/L, dengan nilai tertinggi di Stasiun 2 akibat limbah pemukiman dan aktivitas pelabuhan. Konsentrasi rata-rata fosfat berkisar antara 0,032–0,060 mg/L, dengan nilai tertinggi di Stasiun 3. Fitoplankton yang ditemukan terdiri dari 6 kelas dan 12 spesies, dengan nilai kelimpahan berkisar antara 1.475,97–3.074,95 ind/L. Kelimpahan tertinggi dijumpai pada Stasiun 1 yang didukung oleh keberadaan ekosistem hutan mangrove sebagai penyuplai hara alami. Hasil analisis regresi linear berganda menunjukkan bahwa secara simultan, konsentrasi nitrat dan fosfat memiliki hubungan yang signifikan dengan kelimpahan fitoplankton (r = 0,730; R² = 0,533; p < 0,05). Namun, secara parsial koefisien regresi kedua variabel tersebut bernilai negatif, yang mengindikasikan pola penurunan kelimpahan fitoplankton pada kondisi kadar nutrien tinggi di titik pengamatan tertentu. Pola ini diduga terkait dengan faktor pembatas fisik-kimia lain yang tidak diukur dalam penelitian ini, seperti tingkat kekeruhan perairan, sehingga diperlukan kajian lanjutan untuk mengonfirmasi faktor penyebabnya.
Co-Authors ', Intan ', Jamalus AA Sudharmawan, AA Abdullah &#039; Adam Dionfriski Adani Fatahilal Arifin Ade Mulyana Aden, Aden Adi Maulana Adrizal, Taufik Afriansyah, M. Afrizal Tanjung Afrizam &#039; Afrizani, Syafrinaldi Agustinus Robert Uria Albukhori, Mustaqim Alfeus Jhonson Armada H Alghani, Muhammad Roif Alqoriffah Hasanah Anadri, Rifqi Rafif Andini, Dilla Andre Thessalonians Marpaung ani ani Aras Mulyadi Arbianti, Purnama Ardi Gustri Purbata Areza Maulana Arifin, Adani Fatahilal Aritonang, Simon Hasintongan Aryanti, Nisa Aslam, Atthoriq Habib Harry Bella Billiant J Ananta Kambaren Benny Heltonika Bestari, Bismi Yanda Putri Bintal Amin Bintang Rapshodio Tane Biotal Amin, Biotal Dameria, Gabriella Darmawan, Ernanda P. Dellarosa, Wiranda Dessy Yoswaty Dewi Seswita Zilda Dewita Dewita Dewita Dewita Dharma Eka Putra Dilla Andini Dinda Nurbaiti Dionfriski, Adam Dodik Febriyantoro, Dodik Dwi Hindarti, Dwi Dwi Putri Pratiwi Dyonisius Hutauruk Efriyeldi, Efriyeldi Eka Puspa Sari Elizal, Elizal Esra Waty Eva Syukriani Fadel Fadel Fadillah, Yuda Fathurrahman, Febri Fatma, Nisa Tria Fatmanita Fatmanita Fatmanita, Fatmanita Febbyolla, Selfi Anidal Febeyessy Aritonang Febri Naldi Feffiana M Amin Feliatra Feliatra, Feli Ferdi, Aidil Fitriani, Ersa Fitriansah, Heru Ghifari, Muhammad Fadil Gregorius Agung Gustini Sri Ulina Hanifa, Zurya Hardiko, Syefri Haura, Sari R. Al Hazmi, Arief Ilham Ilahi Indri Wahyuni Irwan Effendi Islamiati, Bening Izzati, Salsabila Jefri Affandi Jewlaika, Lady Jihan Fitri Muthiah Rahmah Joenathan Sarumpaet Joko Samiaji Jonter Sitepu Kaharudin, Zakaria Khaironisa, Riska Khairunnisa Khairunnisa Khasena, Aisyah Kusnadi, Yudi M, Ridwan Rafsyanjani. Maharani, Tasya Putri Mahmudah, Dewi A. Manik, Mei Suyanti Masjudi, Heri Merry Sintya Dewi Michael Prawira, Michael Mikael H Dolok Saribu Mila Rosa Mubarak &#039; Mubarak Mubarak Mudinillah, Adam Muhammad Aliv Kusuma Putra Muhammad Amien Muhammad Hafizh Muhammad Irfan Muhammad Nudi Habibi Muhammad Nudi Habibi Muhammad Syarif Musrifin Galib Musrifin Ghalib Nababan, Sumiati Friesledi Nabila Afifah Azuga Nabila Afifah Azuga Naldi, Febri Nickson Panjaitan Nila Sari Lubis Nugraha, Rafiq Nugraha, Rafiq Prima Nur Arifin, Nur Nurfalah, Risna Nursyirwani, Nursyirwani Nurul Abdiah Nasution Nurvana, Resti Panggabean, Salmi Engriani Permatasari, Mutiara Indah Pratama, Farrel Prayitno, Betari Erlinda Priyono, Franciscus Edi Putra &#039; Putra, Dhiga Kurnia Ananda Putra, Rajiv R. Putri Andini, Putri Putri Maharani Putri, Dinda Maharani Putri, Nadila Putri, Rukiana Audi Putri, Zulherija Rafsyanjani M, Ridwan Rahman, Nanda Rahmat Hidayat Ramadhan, Ragiel Ramadhoni, Aulia Zahro Rambe, Sakinah Rachmadani Rianti Putri Ridhawani, Fiki Rifardi Riska Khaironisa Rizki Hamdani Rizki, Sofia Wanda Rosa, Mila Rozali &#039; Rozalina, Rozalina Rozalina S.Pd. M Kes I Ketut Sudiana . Saputra, Hafiz Zikra Sari, Lita Sari, Natalia Widya Savita, Dinda Sefni Hendris Selfi Anidal Febbyolla Selvia, Seli Sembiring, Herbin Shandy, Jacinda Qoidatun Shelviyanti, Nabila Sianturi, Yuli Rona Tamaria Sihaloho, Elpon Sinaga, Cindy Novitasari Sinaga, Merisa Debora Sinaga, Rimansius Siregar, Meiyanto Siregar, Sofyan Siti Nursubadriah Siti Sufaidah Sitindaon, Dionisius Rahmat Martin Sitindoan, Benni Mario K. Sitohang, Margaretha Sitohang, Margaretha Sri Ulina Sofyan H. Siregar Sofyan Husein Siregar Sri Dewi Lestari, Sri Dewi Sumanti, Susi Sumiati Friesledi Nababan Susiyanti. N Suzila &#039; Syafrizal Syafrizal Syafruddin Nasution Syahada, Melania Syahputra, Vico Andrian Syahril Nedi Syahrul Syahrul Syawfy Luthfiandra Syukri Fajar Tampubolon, Theresia Tane, Bintang Rapshodio Tantri, Ristamulia Tengku Rahma Lopi Thamrin &#039; Thamrin Thamrin Thamrin Thamrin Tri A Hadi Utami, Rahma I. Verid Aria Susammesin, Verid Aria Waidia Dipeta Ym Windarti Nofriyan Nengsih Wiranda Dellarosa Yasir Muammar Lubis Yunus, Budi Andri Yurestira, Ilham Yusni Ikhwan Yusni Ikhwan Siregar Yusni Ikhwan Siregar Zakaria Kaharudin Zaki, Raihan Zulkifli &#039; Zulkifli Zulkifli