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All Journal Jurnal Ilmu dan Teknologi Kelautan Tropis Jurnal Ilmu Lingkungan El-Hayah : Jurnal Biologi Research Journal of Life Science Journal of Environmental Engineering and Sustainable Technology JFMR (Journal of Fisheries and Marine Research) AKSIOLOGIYA : Jurnal Pengabdian Kepada Masyarakat Wisesa: Jurnal Pengabdian Masyarakat Journal of Fisheries & Marine
Dewi, Citra Satrya Utama
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Religion Agriculture, Biological Sciences & Forestry Humanities Biochemistry, Genetics & Molecular Biology Control & Systems Engineering Decision Sciences, Operations Research & Management Education Energy Engineering Environmental Science Immunology & microbiology Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Library & Information Science Mechanical Engineering Medicine & Pharmacology Social Sciences Other

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Journal : Journal of Fisheries

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Seagrass Ecosystem Assesment for Dugong Conservation: Integrating Anthropogenic Activites and Oceanographic Parameters in East Java’s Coastal Waters Dewi, Citra Satrya Utama; Ciptadi, Gatot; Wahyudi, Slamet; Wiadnya , Dewa Gede Raka; Semedi, Bambang; Sukandar, Sukandar; Isdianto, Andik; Sunuddin, Adriani; Herandarudewi, Sekar Mira; Tarno, Hagus
Jurnal Ilmiah Perikanan dan Kelautan Vol. 17 No. 3 (2025): JURNAL ILMIAH PERIKANAN DAN KELAUTAN
Publisher : Faculty of Fisheries and Marine Universitas Airlangga

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20473/jipk.v17i3.71841

Abstract

Graphical Abstract   Highlight Research 1. The study successfully identified the utilization of coastal and marine areas within the research site. 2. Oceanographic parameters across the study area have been analyzed, providing insights into variations in environmental conditions favoring seagrass ecosystem resilience. 3. The structure of seagrass vegetation has been thoroughly observed, revealing differences in species composition, density, and coverage. 4. Furthermore, the study establishes the connectivity between coastal and marine spatial utilization, oceanographic factors, and seagrass ecosystem dynamics, highlighting their interdependent relationships.     Abstract This study aims to assess the ecological status of seagrass meadows and their relationship with dugong (Dugong dugon) habitats across four distinct ecological regions in East Java, Indonesia. Field assessments were conducted to evaluate seagrass community structure, oceanographic parameters, and the intensity of human activities. Seagrass distribution was mapped using Sentinel-2A satellite imagery, while seagrass health was evaluated through the Seagrass Ecological Quality Index (SEQI) and Importance Value Index (IVI). Statistical analyses, including Analysis of Variance (ANOVA) and Principal Component Analysis (PCA), were employed to identify significant differences and key environmental drivers. The results revealed marked spatial variation in oceanographic characteristics and seagrass coverage (p < 0.05). PCA showed that anthropogenic factors—particularly marine space utilization such as aquaculture and coastal development—were major contributors to seagrass degradation. Elevated nutrient concentrations were also associated with declining seagrass health, indicating land-based pollution as a dominant stressor. These findings underline the urgent need for integrated coastal zone management. Strengthening conservation policies, reducing terrestrial runoff, and implementing sustainable marine spatial planning are critical to safeguard seagrass ecosystems and ensure the long-term survival of dugong populations in Indonesian waters.
Oxygenase Enzyme Activity and Compound Profile in Hydrocarbon Bioremediation by Pseudomonas aeruginosa and Rhodococcus erythropolis Consortium Yanuar , Adi Tiya; Amin, Abd. Aziz; Salamah , Lutfi Ni'matus; Sujadi, Frentina Murty; Wiratno, Ekwan Nofa; Dewi, Citra Satrya Utama; Kurniawan, Andi
Jurnal Ilmiah Perikanan dan Kelautan Vol. 16 No. 1 (2024): JURNAL ILMIAH PERIKANAN DAN KELAUTAN
Publisher : Faculty of Fisheries and Marine Universitas Airlangga

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20473/jipk.v16i1.45528

Abstract

Abstract Hydrocarbon contamination is one of the most significant environmental problems, including in the marine environment. Several methods, such as chemical and physical remediation, have been constructed to remediate pollutants but remain side effects and have a relatively high cost. Bioremediation is an alternative method for degrading contaminants due to its eco-friendliness and low cost. During bioremediation, the enzyme oxygenase is produced by bacteria to degrade pollutants. However, the oxygenation enzyme's activity and compound profile during this bioremediation process are still sparsely explored. This study aimed to analyze oxygenation enzyme activity and compound profiles during the hydrocarbon bioremediation process by bacterial consortia of Pseudomonas aeruginosa and Rhodococcus erythopolis. The materials of this research were the oxygenase enzyme activity, compound profile, and amount of BOD and COD during the bioremediation process. The results showed that the monooxygenase enzyme has activity between 0.257 and 3.859 U/mL. Meanwhile, the dioxygenase enzyme has activity between 0.579 and 5.402 U/mL. The final incubation compound profile found that Hexadecanoic acid methyl ester (C17H34O2) decreased by up to 47.66%. Moreover, BOD and COD reductions were 68.59% and 67.51%, respectively. This study concluded that oxygenation enzymes were produced to degrade pollutant compounds during the hydrocarbon bioremediation process. Further research is needed to improve the effectiveness of bioremediation by enhancing enzyme activity. Highlight Research The potential of hydrocarbon-degrading bacteria (Rhodococcus erythropolis and Pseudomonas aeruginosa) for pollutant degradation in the marine environment. Enzyme activity of hydrocarbon-degrading bacteria and degradation profile of pollutants. The dynamics of BOD and COD during the bioremediation process.
Co-Authors Ade Yamindago Adriani Sunuddin Aida Sartimbul Aliviyanti, Dian Amin, Abd. Aziz Anam, C Anam, M. Choirul Anam, M.Choirul Andi Kurniawan Andik Isdianto Arifianti, Dwi Nurjanatin As'adi, Muhammad Arif Ating Yuniarti Azmi, Nur Fadholi Ulul Bambang Semedi Beginer Subhan Defri Yona Dewa Gede Raka Wiadnya Dewi Nur Setyorini, Dewi Nur Dondy Arafat DP, Imas ekwan nofa wiratno Ellona, Jessica Endang Yuli Herawati Fatmawati, Riska Feni Iranawati, Feni Fery Kurniawan Fikri, Maulana Fuad, Mochamad Arif Zainul Gatot Ciptadi Hagus Tarno Happy Nursyam Hariani, Dyah Fitri Hariati, Anik Martinah Herandarudewi, Sekar Mira Julianinda, Yanida Azhari Kurniasari, Diah Marhendra, A.P.W Maulidiyah, Rizqi Aimmatul Muammar Kadhafi Muhammad Fakhri Ndari, Eva Falantika Putri, Yandini Eka Rakhmawan, Hilal Rarasrum Dyah Kasitowati, Rarasrum Dyah Rio Christy Handziko, Rio Christy Rohenda, Amelia Rudianto Salamah , Lutfi Ni'matus Samuel, Pratama Diffi Saputra, Dhira Kurniawan Slamet Wahyudi Sujadi, Frentina Murty Sukandar Sukandar Sukandar, Mr. Syahrir, Ahdiya Syananta, Citra Syarifah Hikmah Julinda Sari Tiwi, Ayu Laksmi Tita Cindar Utomo, Anisa Dwi Riskiani Wiadnya , Dewa Gede Raka Yanuar , Adi Tiya