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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.
Arjuna Subject : -
Articles 191 Documents
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Modeling the Possible Impacts of Dredging Activities in the Fishery Port of Carocok, Pesisir Selatan Regency, West Sumatra: Hydro-Geo-Oceanographical Approaches Wisnu Arya Gemilang; Ulung Jantama Wisha; Guntur Adhi Rahmawan; Nia Naenul Hasanah Ridwan; Ilham Ilham
Jurnal Segara Vol 18, No 2 (2022): August
Publisher : Politeknik Kelautan dan Perikanan Dumai

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15578/segara.v18i2.11426

Abstract

Carocok Fishery Port (PPP Carocok) is a supporting facility for capturing fishery in the Pesisir Selatan Regency. Thus, bathymetry monitoring the shipping lane and the port pool dredging is crucial to bolster fishery activities. This study aims to model the possible impact when massive dredging is applied based on geological and oceanographical approaches. The bottom sediment sampled in the field was analyzed using a granulometric method. A direct bathymetry survey was also done using a single beam echosounder and tide gauge deployment. Hydrodynamic modeling was employed to predict the changes in water motion characteristics if dredging is applied—a scenario applying bathymetry profile after dredging was applied in the simulation. The bathymetry contour within Carocok Bay was relatively declivous, categorized as shallow water with a depth ranging from -2.5 to -15 m. The sediment type in the study area consisted of sand, sandy clay, clayey sand, silty sand, and mixed textures. The tidal current motions (ranging from 0 to 0.053 m/s) are the primary factor transporting the water mass within the port pool, which also impacts sediment transport in the semi-enclosed water area. The sediment characteristics showed that the sediment is deposited in low-energy conditions. It is modeled that the dredging plan in the PPP Carocok will not cause any significant changes, including bathymetry alteration and water environment. Therefore, the port pool is still appropriate to espouse fishery activities in the Carocok Port without dredging.
Biodiversity and Aquatic Vegetation Succession in Biawak Island Marine Protected Area, Indramayu-West Java Andreas Albertino Hutahaean; Agustin Rustam; August Daulat; Yusmiana Puspitaningsih Rahayu; Devi Dwiyanti Suryono; Hadiwijaya Lesmana Salim; Mariska Astrid Kusumaningtyas
Jurnal Segara Vol 18, No 1 (2022): April
Publisher : Politeknik Kelautan dan Perikanan Dumai

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (587.122 KB) | DOI: 10.15578/segara.v18i1.10965

Abstract

The existence of aquatic vegetation in the coastal waters is correlated with the water quality parameters. Seagrass and macroalgae are aquatic plants often found to form a coastal ecosystem that depends on water quality, both physically and chemically. Research on the existence of aquatic plants in Biawak Island, Indramayu, West Java, was conducted in 2016 and 2019 by combining in situ data and secondary data. The purpose of this study was to observe the dynamics of seagrass ecosystems as aquatic plants on Biawak Island and their correlation with the succession that occurred in the aquatic environment in Biawak Island as part of the Biawak Archipelago Marine Protected Area (MPA). The research method integrates a descriptive analysis and its correlation between the submerged aquatic plants and their environment. The results showed that seagrasses in Biawak Island tend to disappear and be replaced by macroalgae. The type of seagrass found in 2016 was Enhalus Acoroides covered by epiphytes perished in 2019. The abundance of macroalgae, especially Halimeda macroloba, indicates the existence of nutrient enrichment and high turbidity, causing the seagrass to be replaced by macroalgae. Another biodiversity found in the region was clams and sea cucumber, while branching coral conditions experienced bleaching and degradation. An environmental condition contains high nutrients strengthening the nutrient enrichment for a particular time. Therefore, integrated management regarding terrestrial and shipping lines track needs to be addressed to maintain the sustainability of the natural resources in the Biawak archipelago.
Strengthening The Social Capital of The Banda Neira Community to Improve The Adaptive Capacity of Tsunami Mitigation Triyono Triyono; Muhammad Hikmat Jayawiguna; Dyan Primana Sobarudin; Ana Rojayati
Jurnal Segara Vol 18, No 2 (2022): August
Publisher : Politeknik Kelautan dan Perikanan Dumai

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15578/segara.v18i2.11601

Abstract

Adaptive capacity is one of the essential components of tsunami disaster mitigation. One of the determinants of the high level of adaptive capacity is the strength of the community’s social capital. Social capital plays an essential role as the basis for community response, especially during the emergency period. Communities with good social capital positively affect the implementation of tsunami mitigation strategies. This study seeks to assess the actual condition of the adaptive capacity of the Banda Neira community in dealing with the tsunami disaster and efforts to increase it through strengthening social capital. The adaptive capacity assessment uses an index-based approach by identifying a set of determinants based on respondent interviews related to perceptions and knowledge of disaster mitigation. The three variables of social capital (bonding, bridging, and linking) are used to measure each determinant numerically or qualitatively with the value of the Likert model scale (1-5). Furthermore, the determinant scores are combined into a measurement of the overall adaptive capacity of the system. The results of the research indicate that it is necessary to strengthen the bounding and bridging variables, namely in the form of increasing the role and function of institutions in assisting, preparedness training, and strengthening relations between communities through social activities and optimizing the role of social groups.
Seagrass Connectivity Based on Oceanographic Condition in The Marine Protected Area of Biawak Islands, Indramayu Aditya Ramadhan; Noir Primadona Purba; Sunarto Sunarto; Udhi Eko Hernawan; Ibnu Faizal
Jurnal Segara Vol 18, No 1 (2022): April
Publisher : Politeknik Kelautan dan Perikanan Dumai

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (834.8 KB) | DOI: 10.15578/segara.v18i1.10961

Abstract

Seagrasses are an essential component of the coastal environment with provide many ecosystem services beneficial to humans. Understanding the pattern of dispersal of segrasses is important for conservation management. The aimed of this research was to analyze the seed dispersal of the seagrass Enhalus acoroides in the Marine Protected Area of Biawak Islands, Indramayu, based on hydrodynamic modelling. Oceanographic data were downloaded from several open acces website and location of seagrasses based one insitu observation. Then, oceanographic parameters and seed traits were used to develop the particle trajectory model. Our analysis showed that the seafloor’s depth around the islands varied, ranging from 8 m to 48 m. The seed dispersal was strongly influenced by alternating tidal currents (reversing current). The particle trajectory showed that most of the seeds would be transported outward away from each source in the islands, and they settled in deeper areas further from the coast of the islands. This result indicates that the seagrass population in Biawak Islands might depend predominantly on vegetative recruitment, which is slow. This may be related to the low seagrass canopy cover in Biawak Islands.
Halaman Depan Jurnal Segara Vol 18 No 1 April 2022 Joko Subandriyo, ST
Jurnal Segara Vol 18, No 1 (2022): April
Publisher : Politeknik Kelautan dan Perikanan Dumai

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (755.103 KB) | DOI: 10.15578/segara.v18i1.11487

Abstract

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Halaman Belakang Jurnal Segara Vol 18 No 1 Joko Subandriyo, ST
Jurnal Segara Vol 18, No 1 (2022): April
Publisher : Politeknik Kelautan dan Perikanan Dumai

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (309.798 KB) | DOI: 10.15578/segara.v18i1.11500

Abstract

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The Effect of Training and Competency on Shipping Safety Performance (Study at Tanjung Emas Port Semarang) Ignatius Martanto; Rauly Sijabat
Jurnal Segara Vol 18, No 2 (2022): August
Publisher : Politeknik Kelautan dan Perikanan Dumai

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15578/segara.v18i2.11496

Abstract

Shipping safety performance cannot be separated from the quality of sea transportation. The performance of sea transportation safety is a very important factor because it is related to the efforts of the Directorate General of Sea Transportation in realizing effective and efficient sea transportation. Human resources are one of the factors that cause shipping safety performance is not optimal. The results of this study indicate that the problems that occur in shipping safety performance are caused by the competency factor of the workers on board that are not yet optimal. In connection with this phenomenon, this study intends to empirically examine the effect of training and competence on shipping safety performance. Related to this objective, data on training, competence and performance of shipping safety was collected through interviews using questionnaires to workers on board ships at Tanjung Emas Port, Semarang. The data obtained were then analyzed using the Structural Equation Modeling approach to test the research model and the influence between variables. The results of this study indicate that the performance of shipping safety is caused by the competence factor of the above workers when it is not optimal. In addition to competence, this study also shows that problematic shipping safety performance is caused by low training factors. This study also shows that the provision of training can shape and build the competencies needed to support shipping safety performance.
Bioconcentration of Lead at Avicennia Marina in Mangunharjo, Semarang Coastal Area Zallva Arsyta Hartanto; Agus Hartoko; Haeruddin Haeruddin
Jurnal Segara Vol 18, No 3 (2022): December
Publisher : Politeknik Kelautan dan Perikanan Dumai

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15578/segara.v18i3.11165

Abstract

This study aims to determine the bioconcentration of heavy metal Lead Pb in seawater, sediment, and mangrove plants of Avicennia marina and to determine the bioconcentration factor of heavy metal Lead Pb in mangrove which was conducted in January 2022 in Mangunharjo coastal area. The method used in this research was a survey method with quantitative analysis. The samples of A. marina mangroves were divided into three categories of stem diameter, namely small (3 – 8 cm), medium (6 – 15 cm), and large (11 – 23 cm). Measurement of heavy metal concentrations using AAS (Atomic Absroption Spectrophotometry). Heavy metal bioconsentration in Mangunharjo is classified as high exceeding quality standards.  The study revealed that the concentration of heavy metal Lead Pb in the seawater ranged from 0.672 - 0.867 mg/L, in sediments it ranged from 56.50 – 65.96 mg/kg, and in the roots and leaves of mangroves A. marina ranged from 6.209 – 24,883 mg/kg. The bioconcentration factor of heavy metal Lead Pb ranges from 0.185 to 0.227, so that the mangrove A. marina in Mangunharjo Water Area can be classified as an excluder species.
Study of Carrying Capacity and Development Strategy of Coral Garden Based Ecoedutourism in Cemara Besar Island, Karimunjawa National Park, Jepara, Central Java Yeremia Edgar Aprilio; Muhammad Arif Asadi; Yulius Yulius
Jurnal Segara Vol 18, No 3 (2022): December
Publisher : Politeknik Kelautan dan Perikanan Dumai

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15578/segara.v18i3.11125

Abstract

Cemara Besar Island, Karimunjawa National Park, is an important tourist destination in the province of Central Java due to its beautiful beaches and coral reefs. The purpose of this study was to see the area carrying capacity for ecoedutourism based on coral gardens in Cemara Besar Island, analyze development strategies, and find out the recommended spots. The carrying capacity of the area is calculated using three considerations: Physical Carrying Capacity (PCC), Real Carrying Capacity (RCC) and Effective Carrying Capacity (ECC). The results, in PCC>RCC>ECC format, are 2472>97>42 people per day in the utilization zone while 670 > 30 > 15 people per day in the protection zone. Using SWOT analysis, the analysis of tourism development strategies produced 15 alternative regional development strategies, with the top strategic priority being “the development of the concept of coral garden tourism”. Observations on five recommended spots were carried out using a time swimming method, by snorkeling for 10 minutes in an area of 10 m × 10 m per point. The two recommended points in the northern east side of the island, points B and D, are designated as the highly recommended points to apply the concept of ecoedutourism based on coral garden because in these two points the condition of coral reefs is not too good and requires restoration.
The Effect of Enso and IOD Climate Variability on Salt Production In Nusa Tenggara Islands Rikha Bramawanto; Fajar Yudi Prabawa; Ifan Ridlo Suhelmi
Jurnal Segara Vol 18, No 2 (2022): August
Publisher : Politeknik Kelautan dan Perikanan Dumai

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15578/segara.v18i2.11421

Abstract

The Nusa Tenggara Islands have an ideal environment for salt production, such as low rainfall and humidity, high evaporation and wind speed, and relatively good seawater quality. However, global climate variability, such as ENSO and IOD, affects the salt harvest volume of the region. This paper aims to discuss the effect of ENSO and IOD climate variability on salt production in the Nusa Tenggara Islands and their comparison with salt production on the islands of Java and Madura. The result shows that salt production in Nusa Tenggara Islands increased when El Nino and positive DMI simultaneously occurred, as in 2012, 2014, and 2015. Conversely, salt production decreased when La Nina and negative DMI simultaneously occurred, as in 2016. When ENSO and DMI are in normal or opposite conditions, salt production is moderate, as in 2013 and 2017. The La Niña event and IOD negative in 2016 triggered high rainfall and salt production decrease in Nusa Tenggara, about 5.8% of the annual average salt production. Meanwhile, this condition also affected salt crop failure on the islands of Java and Madura. Thus, the effect of ENSO and IOD climate variability on salt production in Nusa Tenggara is less significant than in Java and Madura.

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