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All Journal Jurnal Teknologi Perikanan dan Kelautan Jurnal Kelautan : Indonesian Journal of Marine Science and Technology Jurnal Pengelolaan Perikanan Tropis (Journal Of Tropical Fisheries Management) Albacore : Jurnal Penelitian Perikanan Laut Jurnal Segara Authentic Research of Global Fisheries Application Journal (Aurelia Journal) Semah : Jurnal Pengelolaan Sumberdaya Peraira ACROPORA: Jurnal Ilmu Kelautan dan Perikanan Papua Depik Jurnal Ilmu-Ilmu Perairan, Pesisir dan Perikanan Depik Jurnal Ilmu-Ilmu Perairan, Pesisir, dan Perikanan Jurnal Megaptera
Hutapea, Roma Yuli F
Program Studi Perikanan Tangkap, Politeknik Kelautan Dan Perikanan Dumai, Dumai
Agriculture, Biological Sciences & Forestry Humanities Biochemistry, Genetics & Molecular Biology Chemistry Decision Sciences, Operations Research & Management Earth & Planetary Sciences Education Engineering Environmental Science Library & Information Science Materials Science & Nanotechnology

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STUDY OF SEA WATER QUALITY BASED ON PHYSICAL-CHEMICAL PARAMETERS IN THE WATERS OF THE MALAKA STRAIT Djunaidi, Djunaidi; Widagdo, Aris; Kelana, Perdana Putra; Pramesthy, Tyas Dita; Arkham, Muhammad Nur; Haris, Rangga Bayu Kusuma; Hutapea, Roma Yuli F; EY, M. Habib
Jurnal Segara Vol 19, No 1 (2024): April
Publisher : Politeknik Kelautan dan Perikanan Dumai

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15578/segara.v19i1.14243

Abstract

It is feared that the high level of human activity in the coastal areas of Dumai City and Bengkalis City will have a polluting impact on water quality conditions. Therefore, to preserve coastal and marine functions, it is necessary to manage the quality and control of sea water pollution for present and future purposes as well as ecological balance. This research aims to determine the water quality of Dumai City and Bengkalis City, focusing on the concentration of several physical and chemical water parameters listed in the sea water quality standards for marine biota. Water quality sampling was carried out in May-August 2023 at 12 research stations, then the results were compared with sea water quality standards for marine biota. The research results show that the parameters that still comply with sea water quality standards for marine biota based on the Decree of the Minister of the Environment No. 51 of 2004 are temperatures in the range of 28.7-30.8˚C and an average value of 29.45˚C., pH ranged from 6.4–7.2, with an average value of 6.9 and dissolved oxygen (DO) ranged from 5.0 – 5.9 mg/l, with an average of 5.34 mg/l. Meanwhile, the parameters that do not comply with quality standards are low brightness ranging from 0.40 m-0.58 m with an average brightness of 0.47 m and salinity ranging between 22-28 ppt, with an average salinity of 24 ppt
ANALYSIS OF HEAVY METAL CONTENT IN WATER, SEDIMENT, AND FISH IN THE WATERS OF DUMAI CITY, RIAU PROVINCE Djunaidi, Djunaidi; Arkham, Muhammad Nur; Hutapea, Roma Yuli F.; Kelana, Perdana Putra; Ikhsan, Suci Asrina; Haris, Rangga Bayu Kusuma; Widagdo, Aris; Sari, Iya Purnama; Rejeki, Sri Untari Puji; Sumitro, Martinus Robinson
Jurnal Segara Vol 20, No 2 (2025): December
Publisher : Politeknik Kelautan dan Perikanan Dumai

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15578/segara.v20i2.17337

Abstract

The waters of Dumai City, located in Riau Province and directly connected to the Malacca Strait, are highly accessible both locally and internationally. The coastal area is characterized by intensive human settlements and diverse industrial activities, including oil and gas, crude palm oil (CPO), and cement industries, which discharge wastes that may affect marine biota. Most of these wastes are transported to the sea through river flows, posing a serious threat to the ecological balance and aquatic organisms, particularly fish, with potential risks to human consumers. This study aimed to examine the physicochemical parameters of the waters and to determine the concentration and status of cadmium (Cd) and lead (Pb) in water, sediment, and fish. The research was conducted from April to June 2025 using survey, observation, and experimental methods in both field and laboratory settings. Data were analyzed using Atomic Absorption Spectrophotometry (AAS) to measure the actual concentrations of heavy metals. The results were compared with the threshold values established by the Indonesian Ministry of Environment Decree No. 51/2004 concerning marine water quality standards for aquatic biota. The findings revealed that the physicochemical parameters, including water temperature, salinity, and dissolved oxygen (DO), remain supportive of aquatic life according to the standards. However, the concentrations of Pb and Cd in water, sediment, and fish samples exceeded the permissible limits, indicating pollution in Dumai waters.
The financial business characteristics of hand line fisheries in the SAP Area of Raja Ampat Islands and the surrounding sea : Karakteristik finansial usaha perikanan pancing ulur di Kawasan SAP Kepulauan Raja Ampat dan laut sekitarnya Hutapea, Roma Yuli F.; Tiku, Mathius; Widayaka, Restu; Sari, Evi Maya; Arkham, Muhammad Nur
Jurnal Pengelolaan Perikanan Tropis (Journal of Tropical Fisheries Management) Vol 4 No 2 (2020): Jurnal Pengelolaan Perikanan Tropis
Publisher : Departement of Aquatic Resources Management, Faculty of Fisheries and Marine Sciences, IPB University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29244/jppt.v4i2.32660

Abstract

The activities of capture fisheries at The Natural Sanctuary in the Waters (SAP) area of ​​Raja Ampat Regency are mostly small-scale fisheries. The development of business the hand-line fishing gear is very important for the sustainable use of small-scale capture fisheries activities in conservation areas. The purpose of this study is to assess the feasibility of hand-line fishery business from the financial aspect and the risk of its development in the SAP area of ​​the Raja Ampat Islands and the surrounding sea. The types of data needed in this study are primary and secondary data. Data analysis used in this study includes analysis of financial parameters, investment criteria, and business risk analysis. The results showed that handline fishery business in the SAP area of ​​Raja Ampat Regency and the surrounding sea is profitable and feasible to develop. This result is seen from the analysis of the financial feasibility of the business with a profit of Rp. 9,003,171.00, the R / C ratio value of 1.11, and the payback period (PP) value of 2.95 years. In addition, it is also seen from the feasibility of investment that the value of NPV> 0, net B / C> 1, and IRR> the prevailing interest rate is 5.25%. Judging from the risk, the hand-line fishing business is categorized as not at risk to be developed. This result is seen from the value of CV (0.2) ≤ 0.5, then the value of L (8,428,400) ≥ 0, which means that the company will always profit or break even and do not experience the risk of loss.
Co-Authors Ananda, Tuah Anwar Bey Pane Armelita, Ayang Boby Wisely Ziliwu Djunaidi Djunaidi Djunaidi Djunaidi EVI MAYA SARI EY, M. Habib Fernanda, M. Alfikhry Hafiz Ziddin Haris, Rangga Bayu Kusuma Heriyandi, La Ode Ifan Nur Alwi Iin Solihin Iskandar Musa Iya Purnama Sari Liya Tri Khikmawati, Liya Tri Mardiah, Ratu Sari Mathius Tiku Muhammad Nur Arkham Muhammad Reza Pahlevi Muhammad Tesen Perdana Putra Kelana Putri, Aprilia Syah Rejeki, Sri Untari Puji Rikardo, Muhammad Rio Arianda Simarmata Rizal, Ahsanul Sari, Ratih Purnama Setyawan Sayuti, Noar Mudda Simarmata, Rio Ari Sony Anwar Suci Asrina Ikhsan Sumitro, Martinus Robinson Tiku, Mathius Tirtana, Denta Tri Wiji Nurani Tyas Dita Pramesthy Wahyu Gusfirmansyah Widagdo, Aris Widayaka, Restu Yaser Krisnafi Yaser Krisnafi, Yaser Yudi Wahyudin