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INDONESIA
Jurnal Segara
Published by Kementerian Kelautan dan Perikanan RI
ISSN : 19070659     EISSN : 24611166     DOI : -
Core Subject : Science, Social,
Earth & Planetary Sciences Environmental Science Materials Science & Nanotechnology
Jurnal SEGARA (p-ISSN: 1907-0659, e-ISSN: 2461-1166) adalah Jurnal yang diasuh oleh Pusat Riset Kelautan, Badan Riset dan Sumber Daya Manusia Kelautan dan Perikanan (BRSDMKP), Kementerian Kelautan dan Perikanan – KKP, dengan nomenklatur baru Pusat Riset Kelautan, Badan Riset dan Sumber Daya Manusia Kelautan dan Perikanan, KKP dengan tujuan menyebarluaskan informasi tentang perkembangan ilmiah bidang kelautan di Indonesia, seperti: oseanografi, akustik dan instrumentasi, inderaja,kewilayahan sumberdaya nonhayati, energi, arkeologi bawah air dan lingkungan.
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Articles 10 Documents
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Search results for , issue "Vol 19, No 1 (2024): April" : 10 Documents clear
Evaluation of the Conformity of Marine Spatial Utilisation Activities (KKPRL) for Ports Sector in Palu Bay Indonesia Ahmadi, Nurdin; Suharyanto, Suharyanto; Prasetiyo, Didit Eko; Rahmawati, Yeni; Ndricenning, I Mario; Sidqi, Muhandis; Jakasukmana, Munandar; Syahruddin, A; Bakri, Reza Fauzi; Hafid, Wahyu; Salasah, Rosmawati; Nasution, Syahrial
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.v19i1.14336

Abstract

The utilization of marine space requires regulation due to the multidimensional and overlapping interests in maritime areas. The increasing demand for marine space for various commercial and non-commercial purposes necessitates sustainable management strategies and legal governance to reduce cumulative impacts on the marine environment. The compliance level of marine spatial utilization activities (MSUA), particularly in port activities, is determined by three aspects: the extent realization aspect, the type of activities aspect, and the legal subject aspect. Progress in licensing and meeting MSUA obligations is evaluated using a matrix of suitability indicators with weighting and assessment for each indicator. The research findings indicate that, concerning the extent realization aspect used in the studied ports, compliance with the given MSUA is still observed. However, for the type of activities aspect and the legal subject aspect, progress in licensing and meeting MSUA obligations has not been fully adhered to. Thus, overall compliance is at a level of adherence with notes. Furthermore, at the business compliance level, operations are not conducted properly, as changes in status from non-commercial to commercial activities are not reported, potentially resulting in the loss of non-tax national revenue (PNBP). Regarding MSUA obligations, the indicators posing obstacles to compliance at ports are those related to the obligation of submitting written reports annually to the Minister of Maritime Affairs and Fisheries and reporting the establishment and/or placement of buildings and installations at sea to the agency responsible for hydrographic and oceanographic government affairs.
THE DETERMINATION OF THE DEPTH OF TPI PALANG’S HARBOUR BASIN TUBAN THROUGH CALCULATION OF TIDE COMPONENT Joesidawati, Marita Ika
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.v19i1.10396

Abstract

Determination of the datum chart using the tide component can be used to determine the depth of the harbour basin. TPI Palang's harbour basin is often used as a place for mooring fishing boats, but it often happens that the ships get stuck before entering the haarbour basin. The type of fishing ship at the TPI Palang harbour basin is a payang boat with a draft depth of 2 m. The depth of the harbour basin measurement results in July 2017 was 8 m, while based on the bathymetric map is 12 m. Palang waters, in Tuban Regency is located in the North Sea of East Java, which is open water type, therefore the determination of the depth of the harbour basin is based on the state of the water, is 1.2 x ship draft, which is 2.4 m. The least square and the admiralty method were used to compare the best method in calculating the tidal component. Researchers used tidal data for August 2016- July 2017 obtained from BIG. The tidal type of the Palang waters is diurnal, with an F value for admiralty treatment of 5,160 with least square processing of 5,167. The correlation coefficient of the tidal component with admiralty processing occurs in K1-MS4 of 0.792, while the least square occurs in K1-M4 of 1.6. The result of the calculation of the tidal component of the least square is used to determine the value of the datum chart. The IHO (International Hydrographic Organization) datum chart is used as a basic reference for calculating the depth of the TPI Palang harbour basin. The results show that the required depth of Palang waters in the existing condition (8 m) still requires dredging between 0.033 - 1.071 m. However, to meet the standard of the harbour basin, the required depth is 13,071 m (from LWS) to 13,557 m (from LLWS) which means that the dredging of the harbour basin is about ± 4 m.
CATCH PERFORMANCE OF PURSE SEINE CASE STUDY ON KMN DIVA BAHARI AT KENDARI FISHING PORT Khikmawati, Liya Tri; Setyawan Sayuti, Noar Mudda; Rizal, Ahsanul; Hutapea, Roma Yuli F
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.v19i1.14244

Abstract

Purse seines are a type of fishing gear that operates by surrounding schools of fish. The target fish caught from purse seines themselves are small pelagic fish that are in schools. One of the areas where the majority of fishermen use purse seines is PPS Kendari, where the target fish caught are scallops, skipjack tuna and tuna. The price of self-caught fish is influenced by the type, size and quality of the fish itself. One of the reasons for the feasibility of a fishing business can be assessed from the opinions obtained from the business carried out. Having data related to the performance of catches from a fishing business will provide an initial picture regarding the feasibility of the fishing business. Data collection was carried out by participating in KMN Diva Bahari fishing activities made 8 fishing trips (1 trip 5-8 days). Then fish samples are taken for each fishing operation and the type, number and size are seen/measured. The data that has been collected is then presented in tables and figures and then compared with literature studies regarding the size of fish worth catching. Based on data obtained in the field, it was found that the fish caught were gliding (the majority), tuna, mackerel, sunglir, baby yellowfin tuna and skipjack. Where all the tuna, skipjack, sunglir, tuna fish that were caught were not yet worth catching. Meanwhile, for mackerel, blue kites are included in the fish size category worth catching. Several things that influence the size of fish caught that are not suitable are catching in FAD areas where one of the functions of FADs is a place for spawning and rearing, fishing seasons and fish areas.
ANALYSIS OF CLIMATE COMFORT LEVEL IN JAM GADANG TOURISM AREA Purnama, Fahmi yuwan; M, Nurul Hasanah; Miokta, Thedy Gio; Raymon, M. Fatahilah; Virgianto, Rista Hernandi
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.v19i1.12173

Abstract

The potential of the tourism sector is very important, especially in terms of economic development. One of the factors affecting the tourism sector is the comfort of climatic conditions. Information about climatic conditions becomes the main factor in choosing the destination of a tourist trip. This study aims to analyze the level of climate comfort in the Jam Gadang tourist area of West Sumatra Province based on the Temperature Humidity Index (THI), Discomfort Index (DI), and Humidex Index. The use of secondary data from the parameters of air temperature and daily air humidity obtained from the Bukit Kototabang Global Atmospheric Monitoring Station with a period range of 2010-2020. Processing using R-Studio and Microsoft Excel software. The method used is descriptive analysis. The results showed that the level of climate comfort in the jam gadang tourist area based on the THI, DI, and Humidex indices was included in the comfort category. May is the month with the highest level of comfort. then November is the month with the lowest level of comfort. All three indices have positive correlation values. The influence of the IOD phenomenon when neutral conditions, DM+, and DM- as a whole shows that the index value categories THI, DI, humidex belong to the comfort category. However, humidex index values when DM+ and DM- conditions fall into the category are a little uncomfortable. The average value of the THI index when it is neutral is 20.8 ºC, while at the time of DMI+ and DMI- the average index is the same at 21.7 ºC. Then, the average index value of DI when neutral conditions is 20.9 ºC, while when conditions are DMI+ and DMI- the average is 21.7 ºC. Then, the average value of the humidex index when the neutral condition is 28.1 ºC. While at the time of DMI+ and DMI- the average index is the same at 29.5 ºC.
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
IoT Sea Level Monitoring: A Study on the Development and Field Testing Kusuma, Hollanda Arief; Akbar, Muhammad Aris; Suhendra, Tonny
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.v19i1.12352

Abstract

The measurement of sea level is important in oceanography, as it provides critical information about the ocean environment, including tides, currents, and water temperature. This study aimed to develop an IoT-based sea level monitoring device that can accurately measure sea level and transmit the data in real time. The device consisted of various components: an ESP32 Microcontroller, a GSM Module, an MS5803-14BA sensor, and a battery. The components were assembled on a PCB board and placed inside a waterproof box to protect the electronics from the ocean environment. The field test was conducted for 17 hours at the Tanjungpinang Class 1 Navigation Office Port, and the data was monitored through the Ubidots platform. The results showed that the device accurately measured sea level, with an RMSE value of 0.69 cm and an accuracy rate of 99.47%. However, the field test also revealed data transmission issues, with 18.81% of the data not being sent to the server. This low data transmission rate may have been due to low RSSI levels and issues with operator signal quality. Further research is needed to understand the reasons behind these data losses and to improve the device's overall performance. This study demonstrated the feasibility of using an IoT-based sea level monitoring device to accurately measure sea level and transmit the data in real time. It provides valuable information for further development and improvement of sea level monitoring systems.
ANALYSIS OF THE LENGTH AND WEIGHT RELATIONSHIP OF NANGKA SEED FISH (Upeneus vittatus) CAUGHT IN THE WATERS OF IMAM LASTORI PORT, MOROTAI ISLAND DISTRICT Alwi, Djainudin; Wahab, Iswandi; Safar, Fitriyanti; Rahman, Irfan Hi. Abd
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.v19i1.14187

Abstract

Excessive utilization (over-exploited) will have an impact on reducing the productivity of resources including jackfruit seed fish (Upeneus vittatus). This impact causes changes in abundance, productivity and community structure, such as changes in species dominance, size spectra and catch, which results in depletion of stocks and ends in the extinction of this fish population. So far there is no data and information regarding the biological aspects of the morphology of the use of jackfruit seed fish (Upeneus vittatuss) in Morotai Island Regency. The aim of this research is to analyze the relationship between length and weight of jackfruit fish (Upeneus vittatus) caught in the waters of Imam Lastori Harbor, Morotai Island Regency. Data collection was carried out directly in the field (in situ) by measuring the body length and weight of jackfruit seed fish (Upeneus vittatus). The data obtained were analyzed using simple linear regression analysis. The results of a simple linear regression analysis between the total length and weight of the jackfruit fish (Upeneus vittatus) caught in the waters of Imam Lastori harbor obtained the equation: W (weight) = 1.30 x L (length) = 1.35 indicating that for every 1 increase .30 gram units of the weight of jackfruit seeds will increase 1.35 cm units of the length of kuniran jackfruit seeds (Upeneus vittatus). The b value (exponent) of 1.35 indicates a negative allometric growth pattern. This is in accordance with the criteria for the length-weight relationship if the b value <3, then the growth form is negative allometric). Meanwhile, the determination value (R2) obtained was 0.63, meaning that 63% of the increase in fish length was due to the increase in weight (weight) of jackfruit fish (Upeneus vittatus) while 37% was caused by other factors. 
COMPARISON OF GROWTH OF MANGROVE TYPES OF RHIZOPHORA SPP USING POLYBAG AND HYDROPONIC MEDIA IN KARIMUNJAWA NATIONAL PARK, CENTRAL JAVA Pasaribu, Roberto Patar; Djari, Anthon Anthonny; Rahman, Abdul; -, Aris Kabul
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.v19i1.12702

Abstract

Mangroves are one of the ecosystems that grow in places that are influenced by the around the coast and river mouths. The technique of planting and maintaining mangrove seedlings varies from place to place depending on the media and conditions in the field. The purpose of this study was to compare the growth of mangrove species Rhizophora spp on two different nursery media, namely polybag and hydroponic media. This research was conducted in Karimunjawa National Park, Central Java, with an experimental research method. The results showed the growth rate of mangrove seedlings using polybag media was an average of 0.64cm per fortnight, while with hydroponic media it was 0.44cm per fortnight. The first leaf growth with polybag media occurred in the fifth week after planting while for hydroponic media the leaves grew in the sixth week. The survival rate on polybag media is 92.31%, while in hydroponic media it is 84.61%
DISTRIBUTION OF MOLUSC TYPES (Gastropoda and Bivalves) IN SEAMUS IN THE WATERS OF TANJUNG SALEH VILLAGE, MOROTAI ISLAND DISTRICT Nurafni, Nurafni; Wahab, Iswandi; Padoma, Ummi Kulsum
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.v19i1.14191

Abstract

The vast seagrass field allows the number of biota that live associated with seagrass. One of the wealth of marine resources that is often found is mollusks such as snails, shellfish, octopus, cuttlefish and squid. Mollusks are found in coastal areas with seagrass beds as their habitat. One of the most commonly found mollusk groups in Bere Bere village waters is gastropod and bivalvia. Research Objectives To determine the distribution of mollusks in the waters of Bere-Bere Village. This study was conducted in October 2021 to January 2022 located in the waters of Bere-Bere Village, North Morotai District, Morotai Island Regency. Data collection uses the quadratic transect method to identify mollusks (gastropods and bivalvia) that are found in each square. The transect rope is pulled perpendicular to the sea along 50 m during the receding sea water starting from the zero point (0), to the point of 50 m, the square distance is 10 m while the transect distance is 25 m, while the distance between the station is 50 m, then the square is placed on Every distance of 10 m along the transect that can represent the locations that have gastropod and bivalvia samples. Organism found along the transect, in the squares observed and then identified using an identification book. Field work practices were found 11 types of gastropods (Conus Gladiator, Conus Littyus, Trochidae sp, Cerithiidae sp, Canarium sp, Muricodrupa fenestrata, Vexillum sp, Strombus Campbelli, Strombus Campbell , Conus Episcopatus, Conus Sulcatus, Conus Pennaceus) and 3 types of Bivalvia (Lambis Lambis, Pinna Muricata, Diloma Radula) which are spread on three stations in the waters of Bere-Bere Village.
GROWTH RATE OF ACROPORA TENUIS CORAL WHICH IS TRANSPLANTED ON DIFFERENT ATTACHMENT MEDIA Budikusuma, R Arief; Nurhayati, Atikah; Pangaribuan, Nurmala
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.v19i1.13927

Abstract

Coral transplantation is the activity of cultivating/breeding coral colonies using the fragmentation method. Several techniques have been used in transplant activities, but knowledge of the right transplantation technique is needed so the activities can run well. This study aims to determine the effect of different types of substrate and attachment media used on the growth rate and survival of Acropora tenuis corals transplanted into three attachment media at Karang Malang beach at a depth of two meters. The research was carried out for four months, March-June 2023 through field research using a randomized block design method with two factors, namely the type of substrate used (cement, coral, clay, glass bottles, cans) and different attachment media (control, cement, epoxy). The results of the analysis showed that the use of cement as a fixing medium was more effective and affected coral growth and the growth rate of Acropora tenuis than epoxy and without adhering media. The highest growth rate was found in cement attachment media, which was 0.62 cm/month, and the lowest in the method without attachment media, namely 0.45 cm/month. While the epoxy sticking method is 0.51 cm/month. The survival rate for cement attachment media was 96%, epoxy adhesion media was 88% and treatment without attachment media/control was 76%.

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