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Jurnal Kelautan Tropis
Published by Universitas Diponegoro
ISSN : 14108852     EISSN : 25283111     DOI : -
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Articles 451 Documents
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Analisis Multivariat pada Struktur Komunitas Mangrove di Kecamatan Rupat Utara Kabupaten Bengkalis Provinsi Riau Syahrial Syahrial; Muhammad Hatta; Chandrika Eka Larasati; Arina Ruzanna; Al Muzafri; La Ode Abdul Fajar Hasidu; Windi Syahrian; Zan Zibar
Jurnal Kelautan Tropis Vol 26, No 2 (2023): JURNAL KELAUTAN TROPIS
Publisher : Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/jkt.v26i2.15622

Abstract

Increasing human activity in all aspects of life has contributed to the decline of mangrove forests, a multivariate analysis study on the structure of the mangrove community was conducted in July 2018 in North Rupat District, Bengkalis Regency, Riau Province with the objective of estimating or assessing the condition of the mangrove community structure. Data on the condition of mangrove vegetation was collected in six observations using line transects and plots measuring 10 x 10 m. Mangrove diversity was analyzed using the Shannon-Weaver and Simpson indexes, and variations in mangrove community the structure was analyzed using clusters, non-metric MDS, ANOSIM, and SIMPER. The study discovered 12 mangrove species in North Rupat District, Bengkalis Regency, Riau Province, which was classified into 6 families based on diversity analysis (H') Shannon Weaver indexes ranging from 01.34 to 01.72 and Simpson indexes ranging from 02.43 to 02.81. Furthermore, the results of the mangrove diversity analysis using multivariate clusters and non-metric MDS were divided into four groups, and while the cluster analysis based on the value of the mangrove density had a similarity of 60%, the variation in the significance of mangrove density was significantly different (R = 0.689, p = 0.000), and the mangrove species that compose varies between stations. Moreover, the trunk diameter of mangrove vegetation in North Rupat District, Bengkalis Regency, Riau Province is dominated by mangrove stands with a trunk diameter of 01.00 - 20.00 cm, with the mangrove vegetation that grows and develops at Stations 2 and 6 being relatively younger than the other stations. Stations 3 and 4 are considered more mature in terms of growth and development.  Peningkatan aktivitas manusia di segala setor kehidupan telah mendorong penurunan hutan mangrove, sehingga kajian analisis multivariat pada struktur komunitas mangrove di Kecamatan Rupat Utara Kabupaten Bengkalis Provinsi Riau telah dilakukan pada bulan Juli 2018 dengan tujuan untuk mengestimasi atau menilai kondisi struktur komunitas mangrovenya. Data kondisi vegetasi mangrove dikumpulkan pada enam stasiun pengamatan dengan membuat transek garis dan plot yang berukuran 10 x 10 m, kemudian keanekaragaman mangrovenya dianalisis menggunakan indeks Shannon-Weaver dan Simpson, sedangkan variasi struktur komunitas mangrovenya dianalisis berdasarkan cluster, non-metric MDS, ANOSIM dan SIMPER. Hasil kajian menemukan 12 spesies mangrove di Kecamatan Rupat Utara Kabupaten Bengkalis Provinsi Riau yang tergolong ke dalam 6 famili dengan analisis keanekaragaman (H’) indeks Shannon Weaver berkisar antara 01.34 – 01.72 dan indeks Simpson berkisar antara 02.43–02.81, kemudian hasil analisis keanekaragaman mangrovenya dengan multivariat cluster dan non-metric MDS terbagi atas empat kelompok, sedangkan analisis cluster berdasarkan nilai kerapatan mangrovenya memiliki kemiripan ± 60%, variasi signifikansi kerapatan mangrovenya berbeda nyata (R = 0.689, p = 0.000) serta spesies mangrove penyusun antar stasiun pengamatannya bervariasi. Selain itu, diameter batang vegetasi mangrove di Kecamatan Rupat Utara Kabupaten Bengkalis Provinsi Riau didominasi oleh tegakan mangrove berdiameter batang 01.00 – 20.00 cm, dimana vegetasi mangrove yang tumbuh dan berkembang di Stasiun 2 maupun 6 tergolong lebih muda dibandingkan stasiun yang lainnya, sedangkan vegetasi mangrove yang tumbuh dan berkembang di Stasiun 3 maupun 4 tergolong lebih matang.
The Composition of Portunus pelagicus on the Fishing Ground Area of Danasari Waters, Pemalang Regency Sri Redjeki; Ria Azizah Tri Nuraini; Hadi Endrawati
Jurnal Kelautan Tropis Vol 26, No 2 (2023): JURNAL KELAUTAN TROPIS
Publisher : Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/potensi.%Y.18825

Abstract

Blue swimming crab (Portunus pelagicus) is one of the most economically valuable marine products in Indonesia. The crabs productivity was generally still dependent on the population in the wild. Danasari Village is one of the main crab producers in Pemalang Regency. The daily fishing crab activities by fisherman direct an impact on decreasing of the natural crabs resources. This study determined the crabs composition in the fishing ground where usually spotted by the Danasari crab fisherman. This research obtained the information of a composition of female and male crabs, carapace width distribution, growth characterized, and the egg-berried female number. This study conducted on May to July 2022. The result in this research was a male crabs were dominated than females. The carapace width was generally amount 92-112 mm, while the growth characteristic of blue swimming crabs was negative allometric. The female crab gonad maturity was dominated by 2nd level gonad maturity, while the egg-berried female crabs were found 21 crabs totaled from 14 spot fishing grounds. Based on the carapace width distribution, there are a lot of blue swimming crab with undersized in shallow-depth fishing sites, while the crab size mostly above 100 mm already found at each spot in this research. The highest egg-berried female percentage was found at spot 7th and 13rd, where the female crabs at 7th spot were bigger carapace than at 13rd spot areas. These results indicated that crab resources in Danasari Waters and surround area were indicated potentially overfished, proven with undersized berried-female crabs. The management efforts will conduct an environmentally friendly fishing gear, regarding the policy of ministry regulating as to keep crab resources sustainable. In addition, scheduling rules for fishing activities can also be tested to be applied.
Distribution and Growth Patterns of Crab (P. pelagicus) Based on Environmental Characteristics in Candi Waters, Pamekasan Regency, East Java Province Leni Maryani; Dietriech Geoffrey Bengen; I Wayan Nurjaya
Jurnal Kelautan Tropis Vol 26, No 2 (2023): JURNAL KELAUTAN TROPIS
Publisher : Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/jkt.v26i2.17322

Abstract

Blue swimming crab (BSC) is a fishery commodity with high economic value and great demand in domestic and foreign markets. P. pelagicus swimming crabs are commonly found in Indonesian sea waters, one of the largest contributors to the country's foreign exchange after shrimp and tuna. The high demand for blue crab resources will trigger an increase in fishing efforts. If this is done continuously, it is feared that it could endanger the population structure. Moreover, disrupting the sustainability of blue swimming crab resources in the waters, this study examines the morphometric distribution and growth pattern of P. pelagicus crabs based on environmental characteristics in Candi waters, Pamekasaan Regency. Census sampling was carried out using the census method; the census method was carried out by taking all crab samples caught by fishermen. The results obtained found 33 individual crabs, which were divided into three classes, namely small (<10 cm), medium (>10 cm), and large (>12 cm) size classes. Male crabs dominated the research locations with wider straps than female crabs. The analysis results show that the width-weight relationship's b values are 1.47 (males) and 2.00 (females). In addition, male and female crabs have a positive allometric growth pattern. Blue swimming crabs are often found in habitats with a substrate of dusty mud, high salinity and organic matter.
Vegetation Analysis as Indicator of Mangrove Degradation Level in Keboromo Village, Tayu M. Amanun Tharieq; Azis Nur Bambang; Lita Tyesta Addy Listya Wardhani; Sri Redjeki; Rudhi Pribadi
Jurnal Kelautan Tropis Vol 26, No 2 (2023): JURNAL KELAUTAN TROPIS
Publisher : Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/jkt.v26i2.17575

Abstract

Mangrove degradation is one of the most common issues in the coastal areas of Java, which can cause ecological impacts and even disadvantage for local community. The mangrove forest degradation can be identified based on the vegetation analysis results, which could potentially contribute to the mangrove ecosystem management and rehabilitation programs in the coastal areas. Mangroves in Keboromo Village was the rehabilitation and cultivation area, but often get damaged by ocean waves. This study aims to determine the ecological and vegetation conditions of mangrove ecosystems consist of species composition, density, canopy cover, tree height, and environmental parameters were held in February 2023. The method used was direct observation using transect quadrants of 10x10 m2. The average mangrove density of all observation stations was 3.425 individuals/ha for the tree category, 575 individuals/ha for the sapling category, and 250 individuals/ha for the seedling category. The average percentage of canopy cover was 78.41%. The average height of mangrove trees at all stations is 4.15 m. The environmental parameters were still compatible with the water quality standard for biota and mangrove life. The mangrove forest degradation level based on standard criteria and guidelines for determining mangrove degradation is categorized as low, indicated by mangrove density >1500 individuals/ha and canopy cover >75%. Poor conditions were measured for sapling and seedling densities, which may be caused by environmental factors unsupportive for mangrove regeneration. Based on the results of mangrove vegetation analysis in Keboromo Village, it can state the mangrove ecosystem condition is good. However, management programs are needed to keep the mangroves sustainable.
Carrageenan Extraction of Kappaphycus alvarezii Seaweed from Nusa Lembongan Waters Using Different Alkaline Treatments Ichoun Brawici Dhewang; Ervia Yudiati; Subagiyo Subagiyo; Rabia Alghazeer
Jurnal Kelautan Tropis Vol 26, No 2 (2023): JURNAL KELAUTAN TROPIS
Publisher : Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/jkt.v26i2.17389

Abstract

Kappaphycus alvarezii is a carrageenan-producing red seaweed that is widely cultivated in Nusa Lembongan waters, Bali, Indonesia. Carrageenan is generally extracted using an alkaline base,. iIn this study three different types of alkali were used to extract carrageenan originating from Nusa Lembongan Waters. This study aims to determine the quality of the extraction. The three alkalis used were KOH, NaOH, Ca(OH)2, and distilled water as a control. The 20 g dried seaweed was weighed, washed with the tap running water, and immersed in 0.15% alkaline solution (KOH, NaOH, Ca(OH)2) as well as distilled water for 24 hrs. Followed by rinsing with running water until pH was neutral. The solution was soaked and heated at 100ºC for 2 hours with a ratio of seaweed and water 1 kg in 20 L, and filtered. The extract was mixed with 1.25% KCI. The carrageenan precipitate was put in the oven at 60-80ºC until dry for 48 hours. The yield test results showed that the use of alkaline Ca(OH)2 resulted in a yield of 29.28% better than alkaline KOH (28.18%) and NaOH (27.7%). Based on the analysis of Fourier Transform Infrared Spectroscopy (FTIR), extraction using alkaline Ca(OH)2 showed functional groups characteristic of iota-carrageenan, whereas using alkaline KOH and NaOH showed functional groups characteristic of kappa-carrageenan.
Pemetaan Kerapatan Ekosistem Mangrove Menggunakan Analisis Normalized Difference Vegetation Index di Pesisir Kota Semarang Fani Safitri; Luky Adrianto; I Wayan Nurjaya
Jurnal Kelautan Tropis Vol 26, No 2 (2023): JURNAL KELAUTAN TROPIS
Publisher : Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/jkt.v26i2.18173

Abstract

Mangrove ecosystem in Semarang City has an important role for survival of the coastal area. This is due to the function of mangroves as a barrier to coastal erosion, wave barrier, carbon producer, as a habitat for biota in coastal areas, as well as improving water quality. However, as time goes by, mangroves condition in coastal of Semarang is decreasing every year and causing coastal disasters such as coastal erosion and tidal flooding which have identically occurred on the coast of Semarang. Mangrove ecosystem area in coastal of Semarang City in 2020 is 163,250 Ha. The aim of this study is to determine the density of mangroves ecosystem from 2013 to 2022 with Landsat 8 and Sentinel 2 satellites. The method used to classify and determine the density of mangroves ecosystem is NDVI or Normalized Difference Vegetation Index. The results of analysis show that the mangrove density in 2013 was 412.889 Ha, while in 2022 it was 142.562 Ha. The density of mangroves has decreased by around 270.327 Ha (65.5%), this is due to erosion, land conversion into pond areas, and recently the construction of the Semarang-Demak sea wall. Whereas Sentinel 2 satellite is better to use because it has better image quality, details, and accuracy to show objects on the earth's surface compared to Landsat 8.   Ekosistem mangrove di Kota Semarang memiliki peran yang penting bagi keberlangsungan hidup wilayah pesisir. Hal tersebut dikarenakan fungsi mangrove sebagai penahan erosi pantai, penahan gelombang, penghasil karbon, sebagai habitat bagi biota di wilayah pesisir, serta memperbaiki kualitas air. Namun seiring perkembangan zaman, kondisi mangrove di pesisir Semarang semakin tahun kian berkurang sehingga menimbulkan bencana pesisir seperti terjadinya erosi pantai dan banjir rob yang telah identik terjadi di pesisir Semarang.  Luas ekosistem mangrove di wilayah pesisir Kota Semarang pada tahun 2020 yaitu seluas 163,250 Ha. Tujuan dari penelitian ini yaitu untuk mengetahui kerapatan ekosistem mangrove dari tahun 2013 hingga 2022 dengan citra satelit Landsat 8 dan citra Sentinel 2. Metode yang digunakan untuk mengelaskan dan mengetahui kerapatan ekosistem mangrove adalah metode NDVI atau Normalized Difference Vegetation Index. Hasil analisa menunjukkan bahwa kerapatan mangrove pada tahun 2013 seluas 412,889 Ha, sedangkan pada tahun 2022 seluas 142,562 Ha. Kerapatan mangrove mengalami penurunan sekitar 270,327 Ha (65,5%), hal tersebut disebabkan karena adanya erosi, alih fungsi lahan menjadi area tambak, serta baru-baru ini yaitu adanya pembangunan tanggul laut Semarang-Demak. Sedangkan citra satelit Sentinel 2 merupakan citra yang lebih baik digunakan karena memiliki kualitas gambar yang lebih bagus, detail, dan akurat untuk menunjukkan obyek dipermukaan bumi dibandingkan dengan citra Landsat 8.
RNA/DNA Ratio Performance of Blue Swimming Crab (Portunus pelagicus) Fed with Natural Food Phronima sp. and Artemia salina in Juvenile Phase Sri Mulyani; Erni Indrawati; Syamsul Bahri
Jurnal Kelautan Tropis Vol 26, No 3 (2023): JURNAL KELAUTAN TROPIS
Publisher : Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/jkt.v26i3.20149

Abstract

The availability and quality of fry is a major problem in blue swimming crab aquaculture, with the high mortality at the larval stage. RNA/DNA ratio is one of the parameters that can be used to evaluate the quality of crab fry, including health, nutrition, and growth conditions. This study aims to analyze the effect of Phronima sp. as a substitute feed for Artemia salina on the RNA/DNA ratio performance of blue swimming crab in juvenile phase (crablet 5) during rearing before cultivation in aquaculture ponds. This research was conducted at the Crab Hatchery Unit of the Brackish Water Aquaculture Fisheries Center (BPBAP) Takalar in February 2023. The study used a quantitative experimental completely randomized design (CRD) with five treatments and three repetitions. The ratio of Phronima sp. and Artemia sp. used were: Treatment A 100% Phronima sp; Treatment B 100% Artemia sp; Treatment C 75% Phronima sp and 25% Artemia sp; Treatment D 25% Phronima sp and 75% Artemia sp.;  and E: Phronima 75%+Artemia salina 25%. The results showed that Artemia salina combined with Phronima sp. increased the RNA/DNA ratio of the crab compared to a single feed (100% Phronima sp. or Artemia salina 100%). The feed combination with the highest RNA/DNA ratio was shown in treatment E (Phronima sp. 25% + Artemia salina 75%) with an RNA/DNA ratio of 2.02 +0.032 ng/µL.
Analisis Kandungan Logam Berat Kadmium (Cd) pada Gastropoda Conus spp. di Hamparan Lamun Perairan Pesisir Manokwari, Propinsi Papua Barat Randy Imanuel Sandy Karubuy; Jemmy Manan; Emmanuel Manangkalangi; Luky Sembel; Dandi Saleky
Jurnal Kelautan Tropis Vol 26, No 3 (2023): JURNAL KELAUTAN TROPIS
Publisher : Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/jkt.v26i3.15872

Abstract

Manokwari coastal waters are one of the coastal areas that experience very rapid development of development activities from year to year. This condition allows the input of waste such as heavy metal cadmium (Cd) into the waters of Manokwari. This research was conducted in the coastal area of Manokwari (BLK Beach, Lemon Island, and Tanjung Manggewa) for three months (February-April 2020). The purpose of this study was to describe the concentration of heavy metal cadmium (Cd) in Gastropod Conus on the Manokwari Coast and to determine the relationship between heavy metal content of cadmium (Cd) in Conus with shell size, wet weight, and dry weight. Data analysis includes Atomic Absorption Spectrophotometer (AAS), linear regression, and descriptive analysis. Based on the research results obtained, the average content of cadmium in Conus in Manokwari waters is 0.06-0.22 mg/kg. The heavy metal content in Conus is still below the specified threshold so it is still fit for consumption. The relationship between the heavy metal content of Cd in Conus with shell length, wet weight, and dry weight are positive with the regression equation successively y = -0.065 + 0.002x, y = 0.054 + 0.005x, and y = 0.061 + 0.014x which shows that the content Heavy metal Cd in Conus is influenced by shell length, wet weight, and dry weight.  Perairan pesisir Manokwari merupakan salah satu wilayah pesisir yang mengalami perkembangan kegiatan pembangunan yang sangat pesat dari tahun ke tahun. Kondisi ini memungkinkan adanya masukan limbah seperti logam berat kadmium (Cd) ke perairan Manokwari. Penelitian ini dilakukan di wilayah pesisir Manokwari (Pantai BLK, Pulau Lemon, dan Tanjjung Manggewa) selama tiga bulan (Februari-April 2020). Tujuan dilakukannya penelitian ini untuk mendeskripsikan konsentrasi logam berat kadmium (Cd) pada Gastropoda Conus di Pesisir Manokwari serta mengetahui hubungan kandungan logam berat kadmium (Cd) dalam Conus dengan ukuran cangkang, berat basah, dan berat kering. Analisis data meliputi Spektrofotometer Serapan Atom (SSA), regresi linear, dan analisis deskriptif. Berdasarkan hasil penelitian yang didapatkan, kandungan rata-rata kadmium pada Conus di perairan Manokwari yaitu sebesar 0,06-0,22 mg/kg. Kandungan logam berat dalam Conus masih dibawah ambang yang ditentukan sehingga masih layak untuk dikonsumsi. Hubungan antara kandungan logam berat Cd dalam Conus dengan panjang cangkang, berat basah dan berat kering adalah positif dengan persamaan regresi berturut-turut y = -0,065 + 0,002x, y = 0,054 + 0,005x dan y = 0,061 + 0,014x yang menunjukan bahwa kandungan logam berat Cd dalam Conus dipengaruhi oleh panjang cangkang, berat basah dan berat kering.
Pengaruh Perubahan Gradien Suhu dan Salinitas terhadap Struktur Komunitas Fitoplankton di Perairan Teluk Ambon Lisna E. Cahyani; Kesaulya Irma; Sara Haumahu
Jurnal Kelautan Tropis Vol 26, No 3 (2023): JURNAL KELAUTAN TROPIS
Publisher : Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/jkt.v26i3.19817

Abstract

Primary production in the marine ecosystem depends on the presence of phytoplankton. The presence of phytoplankton is controlled by physical parameters such as salinity and temperature. In order to understand the impact of change of salinity and temperature on the community structure of phytoplankton, especially their abundance and diversity in the waters of Ambon bay, water samples were collected in May and July 2021 at 13 stations and in the layer of 0-10 meters and temperature and salinity were measured simultaneously. Thirty-seven species of phytoplankton were found. The highest number of species were in division Bacillariophyceae (97%), Fragilariophyceae (2%) and Dinophyceae (1%). The most diverse genus was Chaetoceros (8 species). Phytoplankton density ranged from 285 to 302.698 cells.m-3 during sampling I and 292-614.069 cells.m-3 during sampling II.   Odontella sinensis and Coscinodiscus radiatus were the highest phytoplankton density during sampling I and II, respectively. Diversity index (Simpson’s diversity index) was maximum at station 1 (sampling I) and station 9 (sampling II). Temperature and salinity show positive and negative correlation, respectively with phytoplankton density. This indicates that changed in salinity and temperature gradient have impact on the community structure of phytoplankton. As phytoplankton plays a key role for the life in marine ecosystem and also indicator for waters quality, it is important to study in depth how the effect of climate change on its community structure either in semi-closed or open ocean.  Produksi primer di ekosistem laut dipengaruhi oleh keberadaan fitoplankton dan keberadaan fitoplankton dipengeruhi oleh parameter fisika seperti salinitas dan suhu. Untuk mengetahui dampak dari perubahan salinitas dan suhe terhadap struktur komunitas fitoplankton, terutama kepadatan dan keragaman jenisnya di perairan Teluk Ambon, maka sampel air diambil pada bulan Mei dan Juli 2021 di 13 stasiun penelitian pada lapisan kedalaman 0-10 meter. Suhu dan salinitas diukur secara bersamaan dengan menggunakan CTD. Tiga puluh tujuh spesies fitoplankton ditemukan dan spesies dari devisi Bacillariophyceae ditemukan dalam jumlah yang tertinggi (97%), Fragilariophyceae (2%) dan Dinophyceae (1%). Genus dengan jumlah spesies terbanyak adalah Chaetoceros (8 species). Kepadatan fitoplankton berkisar antara 285 sampai 302.698 sels.m-3 saat sampling I dan 292-614.069 sels.m-3 selama sampling II.  Pada sampling I, Odontella sinensis dijumpai dalam jumlah yang banyak sedangkan pada sampling II spesies Coscinodiscus radiatus yang dijumpai dalam jumlah yang banyak. Indeks diversitas (index diversitas Simpson) tertinggi di stasion 1 (sampling I) dan stasion 9 (sampling II). Suhu berkorelasi positif dengan kepadatan fitoplankton sedangkan salinitas berkorelasi negative dengan kepadatan fitoplankton. Hal ini menunjukan bahwa perubahan gradien salinitas dan suhu di perairan Teluk Ambon berpengaruh bagi kedapatan fitoplankton. Sebagai unsur penting untuk menunjang kehidupan organisma lain dan juga indicator kesuburan ekositem laut, maka sangat penting untuk melakukan penelitian secara berkelanjutan untuk mengetahui bagaimana pengaruh perubahan iklim terhadap struktur komunitas fitoplankton baik di perairan semi-tertutup maupun di perairan terbuka.
Pemanfaatan Citra Satelit Aqua-MODIS untuk Pemantauan Dinamika Spasio-Temporal Produktivitas Primer Bersih di Perairan Laut Jawa Alfandy Putra Anugrah; Zainul Hidayah; Abdurrahman As-Syakur; Herlambang Aulia Rachman
Jurnal Kelautan Tropis Vol 26, No 3 (2023): JURNAL KELAUTAN TROPIS
Publisher : Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/jkt.v26i3.18222

Abstract

The Java Sea is an area with the highest rate of exploitation of fishery resources in Indonesia. As much as 32% of the total national fishery production or 2.2 million tons has come from catches in the Java Sea, even though the area of these waters only covers 7% of the total area of national waters. Fisheries productivity is related to the net primary productivity value resulting from the activity of phytoplankton or chlorophyll-a. Net primary productivity (NPP) is influenced by the presence of nutrients, light, chlorophyll-a, Photosynthetically Available Radiation (PAR) and sea surface temperature (SST). The purpose of this research is to analyze the distribution value of net primary productivity in the Java Sea by utilizing Aqua-MODIS satellite imagery using the Vertically Generalized Production Model (VGPM) method with a range of 2017-2021. The results showed that the waters of the Java Sea have quite high fertility and are classified as Eutrophic because the general monthly average from 2017-2021 has an NPP value of >750 mgC/m2/day. The value of primary productivity follows the seasonal pattern, will be high in the east moonson season and decrease in the west monsoon season. Laut Jawa merupakan wilayah dengan laju eksploitasi sumberdaya perikanan tertinggi di Indonesia. Sebanyak 32% dari total produksi perikanan nasional atau sebesar 2,2 juta ton berasal dari hasil tangkapan di Laut Jawa meskipun luas wilayah perairan ini hanya mencakup 7% dari total luas wilayah perairan nasional. Produktivitas perikanan tangkap berhubungan dengan nilai produktivitas primer bersih hasil dari aktivitas fitoplankton atau klorofil-a. Produktivitas primer bersih di suatu perairan dipengaruhi oleh adanya unsur hara, cahaya, klorofil-a, Photosynthetically Available Radiation (PAR) dan suhu permukaan laut (SPL). Tujuan dari penelitian ini adalah untuk menganalisis nilai distribusi produktivitas primer bersih di Laut Jawa dengan memanfaatkan citra satelit Aqua-MODIS menggunakan metode Vertically Generalized Production Model (VGPM) dengan rentang tahun 2017-2021. Hasil penelitian menunjukkan bahwa perairan Laut Jawa memiliki kesuburan yang cukup tinggi dan tergolong Eutrofik karena rata-rata bulanan secara umum mulai dari tahun 2017-2021 memiliki nilai NPP >750 mgC/m2/hari. Nilai produktivitas primer mengikuti pola musim, akan tinggi pada musim timur (kemarau) dan menurun pada musim barat (penghujan).

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