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Journal : SRIWIJAYA JOURNAL OF ENVIRONMENT

The Combination of Medium and Method of Cultivation on The Growth Performance of Porphyridium cruentum Hasanah, Hasanah; wulandari, Wulandari; afriani, Afriani; Hariski, M.; Muji Rahayu, Dyah; Arbajayanti, Rahma Dini
Sriwijaya Journal of Environment Vol 10, No 1 (2025): Environmental Impacts
Publisher : Program Pascasarjana Universitas Sriwijaya

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Abstract

Porphyridium cruentum has advantages in pigments and exopolysaccharides, so it has the potential to be developed in the food, pharmaceutical, nutraceutical, and cosmetic industries. Porphyridium cruentum cultivation media uses synthetic and indoors, causing high costs. This study aims to determine the growth performance of Porphyridium cruentum in different mediums and method of cultivation. The research methods used cultivating Porphyridium cruentum for 7 days with four treatments, namely indoors Guillard media (IGM), outdoors Guillard media (OGM), indoors fertilizer media (IFM), and outdoors fertilizer media (OFM. Each treatment had three replications. Growth was identified using an optical density spectrophotometer uv-vis, gravimetrically dried weight of biomass and pH adjustment during 7 days of cultivation. The result shows the best growth performance in IFM, followed by IGM, OFM, and OGM. Fertilizer media is better for the growth of Porphyridium cruentum than Guillard media. pH growth Porphyridium cruentum during cultivation 7-7.5. Indoor cultivation is better than outdoor cultivation. The highest biomass was IFM, which had the best performance in IFM with OD 0.247, pH 7, and biomass 79.6%.
Analysis of the Utilization Level of Port Facilities at Belawan Samudera Port Manurung, Ester; Firmansyah, Firmansyah; Wulandari, Wulandari; H, Afriani; hariski, M; Roiska, Riris
Sriwijaya Journal of Environment Vol 10, No 2 (2025): ECOLOGY AND ENVIRONMENTAL HEATLH
Publisher : Program Pascasarjana Universitas Sriwijaya

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Abstract

Belawan Ocean Fishing Port (PPS) is one of the largest fishing ports in North Sumatra. PPS Belawan aims to increase the income of fishing communities through the provision of fishing port facilities and infrastructure. The study aims to analyze the optimization of the level of utilization of basic, functional and supporting facilities at the Belawan Ocean Fishing Port and to determine the condition of these facilities. The latest conditions in the field through field surveys show that there are several facilities whose utilization levels are not optimal and whose conditions are not good, such as the port pool. The study was conducted at PPS Belawan, North Sumatra from December 15, 2024 to January 15, 2025. The method used in this study is the survey method. The data collected in the study are primary data in the form of interviews with several sources whose daily activities are related to port facilities, namely basic facilities, functional facilities, and supporting facilities. The data analysis used is descriptive which explains the condition of the port facilities and the level of utilization of port facilities from several facilities which can be calculated systematically. The results of the research show that the Belawan ocean fishing port facilities whose level of utilization can be calculated are still not optimal, even far from optimal, while the conditions of all the facilities required to be in ocean fishing ports, namely those divided into basic facilities, functional facilities and supporting facilities are in quite good condition, and can support port operations quite well.
Co-Authors Abdurrahman Madani Adriani Adriani Afriani Afriani Afriani H Afriani, Afriani Akmal Akmal Ar Rizky, Andi Wildan Arbajayanti, Rahma Dini Arfiana, BS Monica Bagus Pramusintho Darlim Darmawi Darmawan Darmawan Darmawan Darmawan Darmawan Darmawan Dea Tri Ananda Depison Depison Dyah Muji Rahayu Eka Anjar Sari Nasution Ester Restiana Endang Gelis Farhan Ramdhani Farizal Farizal Farizal Farizal Fauzan Ramadan Fauzan Ramadhan Filawati Filawati Firmansyah Firmansyah Habibie, M. Rizki Harahap, Afriani Hasanah Hasanah Hasanah Hasanah Hasanah Heltria, Septi Hendrik ' Hermanto, Zul Hilman Madian Insani Indah Indah Indra Sulaksana Juni Trisno Mulyo Kurnia, Nina Lamun Bathara Lauura Hermala Yunita Lestari, Anggun Lisna Lisna, Lisna Lisna, Lisna M. Apri Maulana M. Apri Maulana Mairizal Mairizal Manurung, Ester Maulana, M. Apri Muhammad Asshiddiqi Muji Rahayu, Dyah Mulawarman Mulawarman Mustika Zahara Nahri Idris Najah, Khairun Nasution, Eka Anjar Sari Nelwida Ne Nelwida Nelwida Nita Nita Nita Nita Nurcholifah, Nadilla Nurhayati Nurhayati Nurhayati Nurhayati Nurhayati Nurhayati Nurhayati Nurhayati Oktaviani, Dwi Rizki Putra, Sarma Andika Ramadhan, Fauzan Ramdhan, Fauzan Riris Roiska Rizky Janatul Magwa Robin Saad Murdy Saputri, Diah Maulani Sarwo Edy Wibowo Septy Heltria Sibagariang, Febryanti Silaban, Jecky Sitanggang, Yunita Friska Sri Novianti Sri Novianti Suparjo Suparjo Suparjo Suryono Syafril Hadi Tamaulina Br Sembiring Tampubolon, Nancy Angeline Tri Suryono Triani, Sindi Trisno Mulyo, Juni Wijaya, Jogi Wiwaha Anas Sumadja Wulandari Wulandari Wulandari Wulandari Wulandari Wulandari Yoppie Wulanda Yun Alwi Yun Alwi Yurleni Yurleni Zahara, Mustika Zul Hermanto Zulkifli Alamsyah