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All Journal Asian Journal of Aquatic Sciences Tropical Marine Environmental Sciences
Shandy, Jacinda Qoidatun
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Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Earth & Planetary Sciences Environmental Science Physics

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TYPES AND ABUNDANCE OF PHYTOPLANKTON AT DIFFERENT DEPTHS IN THE COASTAL WATERS OF TELUK MAKMUR VILLAGE, DUMAI CITY, RIAU Shandy, Jacinda Qoidatun; Nasution, Syafruddin; Nurrachmi, Irvina
Asian Journal of Aquatic Sciences Vol. 8 No. 1 (2025): April
Publisher : Lembaga Penelitian dan Pengabdian Kepada Masyarakat Universitas Riau

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31258/ajoas.8.1.79-85

Abstract

This study aims to identify the types and abundance of phytoplankton at different depths and research stations in the coastal waters of Teluk Makmur Village, Dumai City, Riau Province. Samples were taken from three different locations, namely estuary areas, tourist areas, and areas far from settlements. The number of phytoplankton samples from the three stations at three depths was 27 samples. Water quality parameters such as temperature, salinity, pH, DO, TSS, nitrate and phosphate were measured to determine the condition of the aquatic environment and the effect on phytoplankton growth. Phytoplankton were analyzed using a microscope and identified using a phytoplankton identification book. The results showed that 27 species of marine phytoplankton were found in the Bacillariophyceae, Dinophyceae, Cryptophyceae, and Conjugatophyceae classes. The most common phytoplankton found came from the Bacillariophyceae class. The highest abundance of phytoplankton between depths was obtained from a depth of 3 m, namely 368,558.0441 ind/L, while the highest abundance of phytoplankton between stations was obtained from station III, namely 360,000.452 ind/L. The abundance of phytoplankton between depths and between stations showed no significant difference (p>0.05).
Liquid Waste Management Techniques by Using Equipment Operation System and Ipal System in PT Pertamina Trans Continental Dumai, Riau Wulandari, Aprilia; Shandy, Jacinda Qoidatun
Tropical Marine Environmental Sciences Vol. 3 No. 2 (2025): May
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/tromes.3.2.41-47

Abstract

Managing liquid waste from the oil and gas industry is crucial to prevent water pollution. PT Pertamina Trans Kontinental Dumai is one of the companies active in oil and gas operations, which produces liquid waste from exploration and production processes. This study aims to determine the company's fluid waste management system and the readiness of oil spill response equipment. The methods include direct observation, interviews with relevant parties, and literature review. The observations indicate that wastewater treatment is carried out through three stages: physical separation, chemical treatment, and biological processes using aerated tanks and sedimentation. The quality test results show that parameters such as BOD, COD, oil and grease, ammonia, total phenol, pH, and temperature are within the established quality standards. Additionally, PT Pertamina Trans Kontinental Dumai has complete and well-maintained emergency response facilities for oil spills, including oil booms, oil skimmers, dispersants, and sorbents. In conclusion, the management of liquid waste and equipment readiness for oil spill response at PT Pertamina Trans Kontinental Dumai complies with standards, thereby minimizing the risk of marine environmental pollution.
Co-Authors Irvina Nurachmi Syafruddin Nasution WULANDARI, APRILIA