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Jurnal Segara

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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 â€“ 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 191 Documents

11 12 13 14 15

Assessing Mandeh Region as the Center of Marine Ecotourism in West Sumatra Province, Indonesia: Mass Tourism Issue and Vulnerability Aspects Ulung Jantama Wisha; Try Al Tanto; Nia Naelul Hasanah Ridwan; Guntur Adhi Rahmawan; Ruzana Dhiauddin; Koko Ondara; Wisnu Arya Gemilang
Jurnal Segara Vol 17, No 2 (2021): Agustus
Publisher : Politeknik Kelautan dan Perikanan Dumai

Nowadays, Mandeh Region has developed significantly as the center of marine ecotourism in West Sumatra Province. Many local and international tourists were visiting this site. Due to those conditions, many threats emerged, such as mass tourism evoking damages and pollutions. This study aimed to examine the feasibility of the Mandeh Region for tourism activity and identify the impacts of mass tourism. A direct survey has been conducted. We assessed water quality, accessibility, and social conflicts using a scoring method. A modified matrix categorizing some parameters as the underlying data for marine tourism sustainability was used. We also developed Smartline and CVI model to assess the vulnerability level along Mandeh coastal bay. Local zonation was recommended to reduce more environmental damages. We examined the feasibility of the Mandeh region as a place for ecotourism that reached 71.12 %, indicating this area is sufficiently feasible. The absence of local regulations before the Mandeh region was established as the center of marine ecotourism resulted in mass tourism phenomena that elevated marine litter accumulation. Moreover, the development of many resorts near the coast has recently played a role in triggering pollution and damage. Advanced regulation and management are necessary to diminish negative impacts on both the environment and society.

Modeling of Plastic Debris Particle Trajectory During Pre and Post Reclamation in Jakarta Bay Edwin Apriyanta Winardi; Mutiara Rachmat Putri; Muhammad Reza Cordova; Agus Setiawan
Jurnal Segara Vol 17, No 3 (2021): Desember
Publisher : Politeknik Kelautan dan Perikanan Dumai

The primary source of environmental problems in Jakarta Bay’s waters is the change in hydrodynamics caused by reclamation and land-derived waste from the 13 watersheds that discharge into the bay. In June and December 2006 and 2015, hydrodynamic and trajectory simulations were conducted in Jakarta Bay to determine the distribution of plastic debris in pre- and post-reclamation conditions. The hydrodynamic conditions and particle trajectory in Jakarta Bay were described numerically using the Hamburg Shelf Ocean Model (HAMSOM). Secondary tidal data and primary ADCP data are used to validate the simulation results. The distribution of plastic debris released during the simulation depicts a distribution that follows the monsoon pattern, moving west during the east monsoon and moving east in the west monsoon and spreading along the coastline in both conditions. The percentage of plastic debris increased by 21.42% in June and 4.07% in December. The increase in the percentage of plastic debris that remains in the waters of Jakarta Bay is due to a 0.03 - 0.05 m/s decrease in current velocity following the formation of the reclamation island. Due to the decrease in current velocity within the bay, trajectory simulations indicate that plastic debris will take an additional 69.52 – 304.25 hours to exit. The accumulation of plastic debris around the reclamation islands demonstrates that the islands act as waste traps, necessitating proper waste cleanup, particularly in the canal area and around the reclamation island.

Land Use Changes Analysis in Jakarta Bay Coastal Area Between 1998, 2008 and 2018 Anwar Rizal; Fikri Haykal
Jurnal Segara Vol 17, No 2 (2021): Agustus
Publisher : Politeknik Kelautan dan Perikanan Dumai

As the national capital and one of the largest cities in the world, environmental conditions and land use in Jakarta have changed a lot in the last twenty years. Economic growth and high population growth in Jakarta have resulted in massive development of infrastructure and residential areas in Jakarta. Economic growth and an increase in population are become problems, especially with the decreasing of green areas due to the development process carried out without paying attention to the surrounding environment. Environmental problems such as water pollution, land subsidence, coastal erosion and flooding often occur in the Jakarta area, especially in the coastal areas of North Jakarta. Here, we used Landsat image data to compare land-use conditions in the coastal areas of Jakarta in the period of 1998- 2018. The research showed that the area of mangrove has increased by 79 hectares during 1998 -2018 period. likewise, the built-up areas and open land increased by 292 hectares and 887 hectares respectively. Meanwhile, the area of vegetation, water bodies, and fishpond has decreased by 393 hectares, 797 hectares and 309 hectares respectively. Development and reclamation have changed land-use in the Northern area of Jakarta. However, it is also necessary to pay attention to the impact of development on environmental and social conditions in the North Jakarta area.

Semi-Automatic Classification Model on Benthic Habitat Using Spot-7 Imagery in Penerusan Bay, Bali Devica Natalia Br Ginting; Anang Dwi Purwanto
Jurnal Segara Vol 17, No 3 (2021): Desember
Publisher : Politeknik Kelautan dan Perikanan Dumai

Benthic habitats are one of the interesting marine resources and its existence must be preserved. Provision of up-to-date benthic habitat information requires a relatively large amount of time and money. The use of remote sensing technology is one of the best solution. This study aims to develop a semi-automatic processing model that is fast, accurate, and with broad spatial coverage. The satellite image data used is the SPOT-7 image acquired on April 11th, 2018. The method used is a supervised classification with a decision tree algorithm. The analysis was carried out using a script developed in the open-source R application. The results showed that the model used was able to accelerate the processing of benthic habitat extracted from the initial process to the classification. The model developed is able to classify habitat classes based on the training sample data provided so that it does not affect the user’s ability to determine the habitat class. The resulting model accuracy is 93.6%. The validation of the resulting classification showed an overall accuracy of 59% and a kappa accuracy of 0.46. It is necessary to carry out further research by increasing quality and quantity of training samples from each object of benthic habitats and developing scripts in order to produce better mapping accuracy.

Halaman Depan Jurnal Segara Vol 17 No 1 Joko Subandriyo, ST
Jurnal Segara Vol 17, No 1 (2021): April
Publisher : Politeknik Kelautan dan Perikanan Dumai

Halaman Depan Jurnal Segara Vol 17 No 1

The Movement of Plastic Marine Debris in Indonesian Seas using A Trajectory Model Engki Andri Kisnarti; Nining Sari Ningsih; Mutiara R. Putri; Nani Hendiarti
Jurnal Segara Vol 17, No 3 (2021): Desember
Publisher : Politeknik Kelautan dan Perikanan Dumai

There are many studies on ocean currents transporting plastic marine debris using hydrodynamic models and trajectories that have been carried out. However, it is still constrained to be applied in Indonesian waters. Therefore, this research aims to obtain the movement patterns of plastic marine debris, influenced by the dynamics of currents in Indonesian waters using hydrodynamic and trajectory models. The methodology used in this research is to use the HAMburg Shelf Ocean Model (HAMSOM) numerical model and the trajectory model. Plastic marine debris is assumed to be conservative particles at sea level with a macro size (2.5 cm-1 m). The particles are released in 6 coastal cities (Manado, Balikpapan, Makassar, DKI Jakarta, Semarang, and Denpasar) at the month and stop at the end month (January, April, July, October). The results showed that particles originating from 6 coastal cities moved along the current to the surrounding areas only, across islands within the Indonesian territory, and even left Indonesian territory.

Halaman Depan Jurnal Segara Vol 17 No 3 Joko Subandriyo, ST
Jurnal Segara Vol 17, No 3 (2021): Desember
Publisher : Politeknik Kelautan dan Perikanan Dumai

Halaman Depan Jurnal Segara Vol 17 No 3

Coastal Vulnerability Assessment Along The North Java Coastlines-Indonesia Dian N. Handiani; Aida Heriati; Fitry Suciaty
Jurnal Segara Vol 18, No 1 (2022): April
Publisher : Politeknik Kelautan dan Perikanan Dumai

The north coast of Java is an area with very diverse maritime activities. These high activities threaten the ecosystem and environmental sustainability. Several areas already experience environmental degradation and most of the threats come from ocean pollution, coastal erosion, continuous tidal flood (rob), and coastal land subsidence. Furthermore, the coastal degradation is worsened by climate change which may cause the area more vulnerable to disaster. This study aims at evaluating the coastal vulnerability using weighted coastal vulnerability index (CVIw). The method calculates coastal vulnerability by weighting physical coastal parameters using Analytical Hierarchy Process (AHP). CVIw calculation result shows that the vulnerability is dominant at high (39%) and very high (51%) classes. The high vulnerability occurs in Tangerang, Bekasi, Brebes, Demak, Jepara, Pati, and Rembang Regencies. Meanwhile, very high vulnerability takes place in several regencies: Serang, Karawang, Subang, Indramayu, Cirebon, Tegal, Kendal, Semarang, and Gresik. The parameters of relief, coastal features, tidal range and shoreline give contribution more in coastal vulnerability besides lithology, sea level change, and wave height. Identifying vulnerability in these areas might help local governments to prioritize their action plan in coastal disasters mitigation.

Determining The Capacity of Temporary Evacuation Shelter in Carita and Labuan District Pandeglang Regency Dini Purbani; Muhammad Ramdhan; Hadiwijaya Lesmana Salim; August Daulat; Aida Heriati; Budianto Ontowirjo; Ardiansyah Ardiansyah
Jurnal Segara Vol 18, No 1 (2022): April
Publisher : Politeknik Kelautan dan Perikanan Dumai

A tsunami due to the GAK flank collapse occurred along the Sunda Strait Coast on December 22, 2018, with areas severely hit including Labuan and Carita Districts on the coast of Pandeglang Regency. The disaster resulted in the death of 431 people, more than 7200 injured and 46,646 people lost their homes. To anticipate the number of disaster casualties, disaster mitigation efforts are carried out using network analysis applications from GIS (Geographical Information Systems) software. The data used in the network analysis process is road data obtained from the Open Street Map in 2019 and supported by wave propagation and speed time to TES. This study used a walking speed of 0.751 m/second for elderly people. The results of the network analysis process showed the best route to the proposed Temporary Evacuation Shelter (TES). There are eight proposed TES in Carita District from which seven are located on Raya Anyer Sirih Street and another one is located on Perintis Kemerdekaan. The number of residents in each area segment in the proposed TES is between 179 and 2,677 people. Yet, there are four existing TES units in Carita District located on Perintis Kemerdekaan Street. In Labuan District, one TES unit is proposed, which has the capacity of up to 4,376 people. Meanwhile, its existing TES is in the form of a Tsunami Shelter Building with a capacity of 23,635 people.

Economic Benefits of Marine Protected Areas, Case of Anambas Islands, Indonesia Leny Dwihastuty; Supriyadi Supriyadi; Umi Muawanah; Muhammad H. Jayawiguna
Jurnal Segara Vol 18, No 1 (2022): April
Publisher : Politeknik Kelautan dan Perikanan Dumai

This study aims to evaluate the economic benefits derived from conservation areas using the case of National Marine Protected Areas (MPA) in Anambas Islands. The study evaluated the top four reef-associated fish with high economic values, namely grouper, red snapper, threadfin bream, and trevally fish. The employed bioeconomic hybrid model to estimate the Maximum Economic Yield (MEY) for those fish under the sustainable conservation policies. We found positive economic benefits from conservation in Anambas Islands. The MPA has shown both biological and economic benefits, namely the spill over impact and total economic value of harvest at amount of IDR 301,481,685,170/year. We found that the 50% MSY policy on fisheries TAC in MPA site will still sustain the fisheries resource but fishers are less profitable. Some strategies to augment the outcome of Anambas Islands MPA include affirmation policies both from national and local government to increase fishing capacity and skills such as operating larger vessels, eg 10 GT and provide programs and assistance on providing alternative livelihoods for fishermen.

Page 13 of 20 | Total Record : 191

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Contact Name
Dani Saepuloh

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danie_saepuloh@yahoo.com

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Journal Mail Official
danie_saepuloh@yahoo.com

Editorial Address
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Location
Kota adm. jakarta pusat,

Dki jakarta

INDONESIA