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All Journal HAYATI Journal of Biosciences Jurnal Teknologi Perikanan dan Kelautan JFMR (Journal of Fisheries and Marine Research) Omni-Akuatika PengabdianMu: Jurnal Ilmiah Pengabdian kepada Masyarakat Journal of Aquaculture and Fish Health Jurnal Abdimas PHB : Jurnal Pengabdian Masyarakat Progresif Humanis Brainstorming Kontribusia : Research Dissemination for Community Development Grouper: Jurnal Ilmiah Perikanan Jurnal Abdi Insani Jurnal Perikanan Pantura Jurnal Layanan Masyarakat (Journal of Public Service) Journal of Marine and Coastal Science Tomini Journal of Aquatic Science Depik Jurnal Ilmu-Ilmu Perairan, Pesisir dan Perikanan Depik Jurnal Ilmu-Ilmu Perairan, Pesisir, dan Perikanan Jurnal Perikanan International Journal of Natural Science Studies and Development (IJOSS)
Luthfiana Aprilianita Sari
Departemen Akuakultur, Fakultas Perikanan Dan Kelautan, Universitas Airlangga
Agriculture, Biological Sciences & Forestry Humanities Automotive Engineering Biochemistry, Genetics & Molecular Biology Civil Engineering, Building, Construction & Architecture Computer Science & IT Decision Sciences, Operations Research & Management Earth & Planetary Sciences Economics, Econometrics & Finance Education Electrical & Electronics Engineering Engineering Environmental Science Health Professions Immunology & microbiology Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Library & Information Science Mathematics Mechanical Engineering Public Health Social Sciences Veterinary Other

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Growth of Nannochloropsis oculata Cultured using Tofu Liquid Waste Fertilizer Rahmadan, Rizky Yanuar; Satyantini, Woro Hastuti; Sari, Luthfiana Aprilianita
International Journal of Natural Science Studies and Development (IJOSS) Vol. 2 No. 1 (2025): IJOSS
Publisher : PT Inovasi Pratama Internasional

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55299/ijoss.v2i1.18

Abstract

Growth of Nannochloropsis oculata is affected by nutrients in its culture media. Tofu liquid waste which is processed into fertilizer is expected to be an alternative nutrient that is more economical for microalgae culture activities. The purpose of this study was to determine the effect of tofu liquid waste fertilizer with different concentrations on the growth of Nannochloropsis oculata. This study used an experimental method with Completely Randomized Design (CRD). The treatment was different concentrations namely P1 (1 ml L-1), P2 (3 ml L-1), P3 (5 ml L-1), P4 (7 ml L-1) and P0 (Walne nutrient 1 ml L-1) each treatment were repeated four times. The main parameters in this study were cell density, cell growth rate and cell doubling time. Data obtained were analyzed using Analysis of Variance (ANOVA) and continued with Duncan's Multiple Range Test (DMRT). Results showed that the treatment of tofu liquid waste fertilizer with different concentrations had a significant different (p<0,05) on the growth of Nannochloropsis oculata. Concentration of 5 ml L-1 (P3) was the best concentration for the growth of Nannochloropsis oculata with peak cell density 1,335±13.54x104 cells ml-1, cell growth rate 0.900±0.001 cells ml-1 day-1 and cell doubling time 18.493±0.026 hours.
Community structure of bivalve in the Curah Ombo River Estuary, Java, Indonesia Kustiawan Tri Pursetyo; Endang Dewi Masithah; Mohd Hanafi Idris; Luthfiana Aprilianita Sari
Depik Vol 14, No 3 (2025): SEPTEMBER 2025
Publisher : Faculty of Marine and Fisheries, Universitas Syiah Kuala

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.13170/depik.14.3.46308

Abstract

Curah Ombo River is an estuarine water body with a muddy substrate that serves as the optimal habitat for bivalves. However, this water body experiences fluctuations in water conditions originating from both terrestrial sources and climate change. The impacts of these conditions trigger changes in the biological conditions, including bivalves.The objective of this study was to determine the diversity index, uniformity index, dominance index, and species richness index of bivalve molluscs found in the Curah Ombo River from Marchto June. The research parameters included identification, diversity index values (H'), uniformity (E), dominance (C), and species richness (R). Water quality was also measured as a supporting factor, including depth, temperature, dissolved oxygen (DO), pH, salinity, and brightness. All data were analyzed for their relationships using Principal Component Analysis (PCA). The results obtained at three points revealed nine species: Paratapes sp., Anadara antiquata, Anadara transversa, Anadara granosa, Meretrix meretrix, Scapharca pilula, Mytilus placuna, and Atrina pectinata. Point 2 showed the highest values for most diversity index values (H'), uniformity (E), dominance (C), and species richness (R), exceeding points 1 and 3. The results of Principal Component Analysis (PCA) show that total bivalve mollusks are categorized into one category together with salinity, light intensity, location, dissolved oxygen (DO), depth, and temperature.Keywords:MarineAquacultureInvertebratesLife feedEnvironmentEconomy
Co-Authors Agung Pamuji Rahayu Agustono Agustono Akhmad Taufiq Mukti Aldilameta, Sonia Alfin Tauhid Arsad, Sulastri Aurelia, Tasya Salsabila Auriga Putri Faradilla Benedikta Tania Diklauia Chrisrendra, Daniel Januar Daniel Januar Chrisrendra Daruti Dinda Nindarwi Dewi, Nina Nurmalia Dharmansyah, Daud Dini Alvateha Diva Adinda Purnamasari Endang Dewi Masithah Ewang Mahendra Putra Galang, Reksa Gita Zahrani Aryandini Gunanti Mahasri I Nyoman Yoga Parawangsa Ichmaha, Viva Kismiyati , Kismiyati, Kismiyati Lana Nafisyah, S.Pi., M. Sc., Ph.D. , Ayu Manan, Addul Masithah, Endang D. Masithah, Endang D. Melva, Eva Mohd Hanafi Idris Mohd Hanafi Idris Muhammad Arief Muhammad Musa Muhammad Yusuf Muhammad Zainuddin Musa, Nadira Mutyara, Nanda Nadira Musa Naufal Falatehan Nimah, Lailatun Nurul Istiqomah Pursetyo, Kustiawan tri Rahayu Kusdarwati Rahmadan, Rizky Yanuar Rarasrum Dyah Kasitowati Regita Ardyanti Rizqi Ramadhan Roro Salma, Raden Rozi Rozi Rozi Rozi, Rozi Samara, Syifania Hanifah Sari, Putri Desi Wulan Sekarjati, Cornelia Shochrul Rohmatul Ajija Siska Falentina Suci Hartati Liyana Suherman, Sutianto Pratama Sulastri Arsad Sulastri Arsad Sulastri Arsad Sulastri Arsad Sylvia Dwi Wahyuni Tasya Salsabila Aurelia Taurus Zeno Adi Eti Harnino Viva Ichmaha Wan Omar, Wan Maznah Woro Hastuti Setyantini Yogita Tirta Noviyanti Yusufina, Dinda