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All Journal Jurnal Pengolahan Hasil Perikanan Indonesia Jurnal Ilmu dan Teknologi Kelautan Tropis JURNAL PERIKANAN DAN KELAUTAN TROPIS JOURNAL OF COASTAL DEVELOPMENT ILMU KELAUTAN: Indonesian Journal of Marine Sciences BULETIN OSEANOGRAFI MARINA Saintek Perikanan : Indonesian Journal of Fisheries Science and Technology GEMA TEKNOLOGI Bioma : Berkala Ilmiah Biologi SAINS DAN MATEMATIKA POSITRON Journal of Oceanography Journal of Marine Research BIOTROPIA - The Southeast Asian Journal of Tropical Biology Jurnal Harpodon Borneo Waste Technology International Journal of Marine and Aquatic Resource Conservation and Co-existence Jurnal Kelautan : Indonesian Journal of Marine Science and Technology Teknosains: Media Informasi Sains dan Teknologi Jurnal Ilmiah Pangabdhi Jurnal Kelautan Tropis E-Dimas: Jurnal Pengabdian kepada Masyarakat JURNAL MAHKAMAH JURNAL ENGGANO Jurnal Penelitian Sains JFMR (Journal of Fisheries and Marine Research) TARLING Journal of Language Education JURNAL MUQODDIMAH : Jurnal Ilmu Sosial, Politik dan Hummaniora Biosaintifika: Journal of Biology & Biology Education Jurnal Kebijakan Perikanan Indonesia QARDHUL HASAN: MEDIA PENGABDIAN KEPADA MASYARAKAT Molekul: Jurnal Ilmiah Kimia Jurnal Mangifera Edu Ulumuna: Jurnal Studi Keislaman ULIN: Jurnal Hutan Tropis Best Journal (Biology Education, Sains and Technology) Kontribusia : Research Dissemination for Community Development TERAJU : Jurnal Syariah dan Hukum Journal of Marine and Coastal Science Jurnal Pengabdian kepada Masyarakat Nusantara Airlangga Journal of Innovation Management Juvenil: Jurnal Ilmiah Kelautan dan Perikanan Journal of Coastal and Ocean Sciences Indonesian Journal of Oceanography Environmental Pollution Journal Jurnal Miyang : Ronggolawe Fisheries and Marine Science Journal EDUCATOR : Jurnal Inovasi Tenaga Pendidik dan Kependidikan Gladi : Jurnal Ilmu Keolahragaan Tarling : Journal of Language Education Jurnal Keuangan dan Akuntansi Terapan (KUAT) Keris: Journal of Community Engagement Jurnal Teknik Terapan (J-TETA) JUSIFOR : Jurnal Sistem Informasi dan Informatika ABDIMU Jurnal Pengabdian Kepada Masyarakat Depik Jurnal Ilmu-Ilmu Perairan, Pesisir dan Perikanan Pelita: Jurnal Pengabdian kepada Masyarakat Journal of Community Empowerment Depik Jurnal Ilmu-Ilmu Perairan, Pesisir, dan Perikanan Journal of Aceh Aquatic Sciences Jurnal Pemberdayaan Masyarakat dan Komunitas Jurnal Kesehatan dan Sains BIOTROPIC

Muhammad Zainuri

Departemen Oseanografi , Fakultas Perikanan Dan Ilmu Kelautan, Universitas Diponegoro

Author-ID : 427367

Religion Agriculture, Biological Sciences & Forestry Arts Humanities Automotive Engineering Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Earth & Planetary Sciences Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Environmental Science Health Professions Immunology & microbiology Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Library & Information Science Mathematics Mechanical Engineering Medicine & Pharmacology Nursing Physics Public Health Social Sciences Veterinary Other

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KAJIAN POTENSI PEMANFAATAN SUMBERDAYA UDANG (Penaeus spp) DAN UPAYA PENGELOLAANNYA DI PERAIRAN PANTAI KABUPATEN BATANG (The Study of Potential Shrimp (Penaeus spp) Resource Utilization and the Management Effort in Batang Regency Coastal Waters) Sulistyowati Sulistyowati; Muhammad Zainuri; Aziz Nur Bambang
Saintek Perikanan : Indonesian Journal of Fisheries Science and Technology Vol 9, No 1 (2013): JURNAL SAINTEK PERIKANAN
Publisher : Fakultas Perikanan dan Ilmu Kelautan, Universitas Diponegoro

Kajian potensi dan pemanfaatan udang (Penaeus spp) di perairan pantai Kabupaten Batang dilakukan berdasarkan analisis terhadap data hasil tangkapan dan trip penangkapan udang selama kurun waktu 2002-2011. Analisis catch per unit effort (CPUE) digunakan untuk menduga potensi lestari (MSY) udang dan upaya penangkapan yang optimum. Analisis juga dilakukan untuk mengetahui keadaan musim penangkapan berdasarkan data kuartalan. Nilai MSY dan upaya penangkapan udang di Kabupaten Batang masing –masing adalah 29.032 kg dan 18.262 trip tahun-1. Musim penangkapan udang tertinggi terjadi pada kuartal I yaitu pada bulan Januari-Maret dan semakin menurun hingga kuartal III (Juli-September). Diketahui bahwa status perikanan udang pada tahun 2005-2006 dan tahun 2010-2011 telah menunjukan overfishing, sehingga diperlukan upaya pengaturan. Pengaturan lebih ditujukan pada pembatasan hasil tangkapan dan upaya penangkapannya dengan jaring arad, yaitu 80% dari potensi lestarinya. Kata kunci : Analisis CPUE, udang (Penaeus spp), MSY, perairan pantai Kabupaten Batang.The study of potential and shrimp resource utilization (Penaeus spp) in Batang Regency coastal waters made based on analysis of the catching data and shrimp fishing trip during the period 2002-2011. Analysis of the catch per unit effort (CPUE) is used to predict the long-lasting potential (MSY) shrimp and optimum fishing effort. The analysis were also conducted to determine the state of fishing season based on quarterly data. MSY value and shrimp fishing effort in Batang respectively 29,032 kg and 18,262 trip. The highest shrimp fishing season was in the first quarter that is in January-March and decreased in the third quarter (July-September). It is known that the status of the shrimp fishery in 2005-2006 and in 2010-2011 have shown overfishing, so the effort settings required. The setting is more aimed at limiting the catch and the catch effort with arad net, ie 80% of the long-lasting potential. Key words: Analysis of CPUE, shrimp (Penaeus spp), MSY, Batang Regency coastal waters

ANALISIS TINGKAT KEBERDAYAAN NELAYAN JARING ARAD DI KABUPATEN BATANG (Analysis of the Level Empowerment from Fishermen Arad Nets in the Batang District) Sulistyowati Sulistyowati; Muhammad Zainuri
Saintek Perikanan : Indonesian Journal of Fisheries Science and Technology Vol 10, No 1 (2014): JURNAL SAINTEK PERIKANAN
Publisher : Fakultas Perikanan dan Ilmu Kelautan, Universitas Diponegoro

Nelayan yang tinggal di sekitar perairan pantai Kabupaten Batang adalah pihak yang secara langsung memiliki hubungan dengan perairan dan menggunakan jaring arad sebagai alat yang digunakan untuk memanfaatkan produknya. Ketergantungan nelayan di sekitar perairan pantai Kabupaten Batang dalam memanfaatkan sumber daya alam masih tinggi sehingga memerlukan usaha alternatif untuk meningkatkan perekonomian mereka melalui program pemberdayaan nelayan. Daya nelayan adalah elemen yang memungkinkan nelayan bertahan hidup dan dapat mengembangkan diri dalam mencapai kemajuan dan kekayaan. Penelitian ini bertujuan untuk mengetahui tingkat daya sosial dan ekonomi nelayan jaring arad yang berada di perairan pantai Kabupaten Batang dan peran pemangku kepentingan terkait dalam pemberdayaan nelayan. Untuk mendapatkan data primer, survei dilakukan untuk 145 responden (±30% dari nelayan yang ada di perairan pantai Kabupaten Batang) pada bulan Maret tahun 2014. Kemudian dilakukan analisis deskriptif dan crosstab. Tingkat daya nelayan jaring arad di perairan pantai Kabupaten Batang masih dikategorikan ke dalam berdaya, baik dari aspek ekonomi dan non. Hal ini dapat dilihat dari rendahnya akses teknologi, keputusan bisnis, dan keterampilan lobi. Para pemangku kepentingan yang membantu bisnis nelayan sebagian besar berasal dari pemerintah dan masyarakat dengan skor 7 (cukup). Oleh karena itu, strategi pemberdayaan diperlukan untuk meningkatkan daya nelayan sehingga peningkatan kesejahteraan dapat terwujud.Kata kunci : Nelayan jaring arad, tingkat keberdayaan, perairan pantai kabupaten BatangFishermen who live around the coastal waters of the Batang which is directly linked to water and use nets arad as a tool that is used to exploit its products. Dependence inshore fishermen around Batang inutilizing natural resourcesis still high so it take seffort to improve their economical ternatives through empowerment programs fishermen. Power fishing is the element that allows fishermen to survive and be able to develop them selves in achieving progress and wealth. This study aims to determine the level of social and economic power arad fishing nets which are in Batang coastal waters and the role of the stakeholders involved in the empowerment of fishermen. To obtain primary data, a survey was conducted for145 respondents (±30% of the fishermen in the coastal waters Batang) in March 2014 and descriptive analysis was then performed cross tab. The power level fishing arad nets in coastal waters Batang still categorized into powerless, both from the economic aspects. It can be seen from low technology access, business decisions, and lobbying skills. The stakeholders who help businesses fishermen mostly from government and society with a score of 7(enough). Therefore, empowerment strategy is required to icrease the welfare of fishermen so that improvement can be realized.Keywords : Fishermen arad nets, level empowerment, coastal waters of the Batang district

MAPPING OF SEAGRASS COVER ON CHLOROPHYLL-A, NITRATES AND PHOSPHATE IN THE TELUK AWUR, JEPARA Sigit Febrianto; Nurul Latifah; Hadi Endarwati; Muhammad Zainuri; Suryanti Suryanti
Saintek Perikanan : Indonesian Journal of Fisheries Science and Technology Vol 15, No 2 (2019): SAINTEK PERIKANAN
Publisher : Fakultas Perikanan dan Ilmu Kelautan, Universitas Diponegoro

Teluk Awur Beach Jepara is one of the waters in Central Java that has a seagrass ecosystem. Seagrass role is the ability to support the life of another biota closely related to the fertility of the waters indicated by the content of chlorophyll-a, nitrate, and phosphate. The purpose of this study is to know the relationship between chlorophyll-a, nitrate, and phosphate to seagrass land cover as well as the variables which have major contributions. The method of study used is descriptive with four station sampling and seagrass with a line transect of 50 m, and a 1x1 m² transect Quadrant divided into 16 sub plots measuring 25 x 25 cm² a spatial approach and multiple regression statistics. The results showed that there was a positive correlation between seagrass land cover to the concentration of chlorophyll-a and nitrate but less correlated phosphate. The highest chlorophyll-a concentrations of 0.381 mg/m3, seagrass land cover 40-60%, seagrass density 314 individual/m2, nitrate 1.141 mg/l and phosphate 0.54 mg/l. The lowest chlorophyll-a concentration ranges from 0.32-0.35 mg/m3, seagrass cover of 0-10%, seagrass density 3-12 individual/m2, nitrate 0.96 mg/l and phosphate 0, 21mg/L. This research shows that there is a strong link between seagrass land cover Concentrations of chlorophyll-a, nitrates and less influential to phosphates.

AIR-SEA FLUX OF CO2 IN THE WATERS OF KARIMUNJAWA ISLAND, INDONESIA Nurul Latifah; Sigit Febrianto; Anindya Wirasatriya; Hadi Endrawati; Muhammad Zainuri; Suryanti Suryanti; Andreas Nur Hidayat
Saintek Perikanan : Indonesian Journal of Fisheries Science and Technology Vol 16, No 3 (2020): SAINTEK PERIKANAN
Publisher : Fakultas Perikanan dan Ilmu Kelautan, Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/ijfst.16.3.171-178

The purpose of this study was to determine the distribution of CO2 flux in Karimunjawa in the east monsoon. The variables in this study were temperature; pH; salinity; DO; CO2 atm was measured using a CO2 meter; chlorophyll-a, phosphate, silicate were measured spectrophotometric method. Total Alkalinity / TA was measured using the titration method with the principle of changing pH; DIC (Dissolved Inorganic Carbon) was measured using CO2sys software. The partial pressure of seawater carbon dioxide calculated using formula: pCO2sea = 6.31T2 + 61,9 Chla2 – 365.85T – 94.41 Chl-a +5715.94, the partial pressure of atmospheric carbon dioxide calculated using formula: pCO2atm = xCO2atm (pb - pH2O). The calculation of the estimated CO2 flux using the formula: Flux CO2 = Kh x kwa x (∆pCO2) , if the CO2 flux has a positive value water acts as a CO2 source, and if it is negative, the waters act as a CO2 sink.. CO2 flux in Karimunjawa waters during east monsoon (represented by August 2018) showed that in Karimunjawa waters with normal pH 7.2-7.4 were dominated by bicarbonate ion HCO3-with an average value of DIC 1847.24 µmol/kg dan TA 1912.51 µmol/kg. The partial pressure of seawater CO2 is higher than the partial pressure of atmospheric CO2 this indicates that the role of Karimunjawa waters as a source of CO2 where there is release of carbon dioxide into the atmosphere with CO2 flux values ranging from 8.549 – 13.272 mmol m-2 day-1. The variables that affect the flux of CO2 were the pCO2sea and ΔpCO2 with a very strong and positive correlation. These two variables were influenced by sea water temperature, salinity, chlorophyll-a, phosphate and silicate.

MONTHLY VARIATION CHARACTERISTICS OF WAVE HEIGHT IN NORTH SULAWESI Ahmad Fadlan; Ricky Daniel Aror; Denny Nugroho Sugianto; Muhammad Zainuri
Waste Technology Vol 5, No 1 (2017)
Publisher : Diponegoro University

ABSTRACTIndonesia is a maritime country which most of the territory is ocean, where many people have activities at sea. Information about variations and characteristics of wave height in some region is very important to support safety and efficiency of the activity. The purpose of the research is to know and analysis the characteristics of the monthly variations of wave height in the water of North Sulawesi. The data used in this study is a surface wind that processed into Windwaves-05 wave model. This model calculates wave height based on energy from surface wind that blows above the sea surface. The research results showed that variations of sea waves in the waters of North Sulawesi generally are closely related to the monsoon wind patterns that occur in Indonesia. When Asian west monsoon in November to April, the average wave height in the waters of North Sulawesi is higher than wave height at Australian east monsoon in May to October. The highest average wave occurred in January with maximum wave height to 3.5 m and lowest average wave occurred in October with a maximum height to 1.25 m. Generally, the average wave height in the waters which bordering the ocean is higher than the waters close to all major islands.

Optimization and Stability of Total Pigments Production of Fusan from Protoplast Fusion of Microalgae Dunaliella and Chlorella in vivo: Attempts on Production of Sustainable Aquaculture Natural Food Hermin Pancasakti Kusumaningrum; Muhammad Zainuri
International Journal of Marine and Aquatic Resource Conservation and Co-existence 2014: IJMARCC Volume 1 Issue 1 Year 2014
Publisher : International Journal of Marine and Aquatic Resource Conservation and Co-existence

Diversification of feed rich in natural carotenoids is needed in aquaculture because they will increase survival and body weight of animal farming. Different types of important carotenoids such as β-carotene, zeaxanthine can be combined through a process of protoplast fusion making it cheaper and faster. Crustaceans can not synthetize carotenoid de novo and they need it to provide nutrition and possibly disease resistance, pigmentation and esthetic value. Green microalgae produce carotenoids and can be manipulated easily by protoplast fusion. The research was conducted to obtain some fusants from interspesies protoplast fusion of D. salina and C. vulgaris. Interspecies protoplas fusion was carried out by protoplast isolation, protoplast fusion and protoplast regeneration. Microscopic and cell analysis will used to confirm positive regenerate protoplast. Analysis of the obtained fusants is limited to morphological description due to the complexity and variability of fusant. The stabilities of fusants obtained were examined by successive subcultures. The result revealed that the fusant from D. salina and C. vulgaris maintain their stability in growth and increased carotenoid production during four periods of subculturing. This result suggesting the potency of fusant to be used as food supplement. Key words: Carotenoid, Protoplast fusion, Dunaliella, Chlorella

The Improvement of the Survival, Growth and Production of Vaname Shrimp (Litopenaeus vannamei) and Seaweed (Gracilaria verucosa) based on Polyculture Cultivation Titik Susilowati; Johanes Hutabarat; Sutrisno Anggoro; Muhammad Zainuri
International Journal of Marine and Aquatic Resource Conservation and Co-existence 2014: IJMARCC Volume 1 Issue 1 Year 2014
Publisher : International Journal of Marine and Aquatic Resource Conservation and Co-existence

The presence of aeration on the cultivation of polyculture system can eliminate oxygen depletion at night while the intensity of light would effect the seaweed Gracilaria verucosa to perform photosynthesis. The supplies of oxygen is to eliminate the oxygen depletion at night until morning, and propose the efficiency of feeding activity, and also stabilize the water quality. The purpose of this research is to improve the survival, growth and production of vaname shrimp, and Gracilaria verucosa. This research was conducted in Jepara Brackishwater Aquaculture Research and Development Center (BBPBAP), from May until August 2013. A number of 75 shrimps and 1,750 g Gracilaria vericosa were cultivated in the 800 L tank, which observed for 96 days. There are four type of treatments, oxygen supply O1 (3,500 lux light intensity), O2 (Aeration with 700 mL minute-1 speed), O3 (light intensity and aeration), O4 (without light and aeration), three replications. This research was conducted using an experimental Randomized Block Design. The survival rate and growth of shrimp (Litopenaeus vannamei) showed a highly significant (p < 0.01) different between the treatments, while the growth and biomass production of seaweed (Gracilaria verucosa) showed a significantly (p < 0.05) different. The three treatments of oxygen and light supply, aeration and the combination of light and aeration, it can be concluded that survival, growth and production of vaname shrimp and Gracilaria verucosa. The combination of light and aeration treatment is the best, it can be concluded survival rate of shrimp (94.64%) compare to the treatment without oxygen (45.24%). Absolute growth rate of shrimp increased from 9.57 g to 12.97 g. The specific growth rate of shrimp increased from 4.73% to 5.07%. The biomass production of shrimp increased from 181.56 g m-2 to 883.95 g m-2. The combination of light and aeration can improve the absolute growth rate of Gracilaria verucosa from 25.86 g to 52.724 g. The specific growth rate of seaweed increased from 1.77% to 2.64% then biomass production of Gracilaria verucosa also to increase from 2,557.76 g to 5,063.2 g. Key words: Litopenaeus vannamei, Gracilaria verucosa, oxygen supply

CHARACTERISTIC AND THE DISTRIBUTTION OF SPASIO – TEMPORAL MACRONUTRIENT IN THE LAGOON AREA OF SEGARA ANAKAN Rose Dewi; Muhammad Zainuri; Sutrisno Anggoro; Tjahjo Winanto; Hadi Endrawati
International Journal of Marine and Aquatic Resource Conservation and Co-existence Vol 2, No 1 (2017): IJMARCC
Publisher : International Journal of Marine and Aquatic Resource Conservation and Co-existence

ABSTRACTLagoon Area of Segara Anakan (SAL) have influence of natural and anthropogenic factors impacting on the increasing of macronutrient, ecologically SAL is downstream from several rivers watershed Citanduy. SAL is tropically moist and influenced monsoon wind, causing the fluctuated waters. The purpose of this research is to recognise the characteristic spatio-temporal makronutrien lagoon. The measurements of macronutrient, include: TN (Total of Nitrogen), NH3 (Ammonia), NO3- (Nitrate), TP (Total of Phosphate), and PO43- (Orthophospat), using methods of spectrophotometric and micro-kjeldahl. The spatial approach is done on 7 stations (S) with representations: (S) natural factors and (S) the presence of anthropogenic activities. The temporal approach (time series) for a year refers to the monsoon wind pattern (west, transition I, east and transition II) season. The results of laboratory tests are discussed descriptively and adapted to the Indonesian standart of waters quality. To facilitate spatio-temporal interpretation, the data is presented formingly a thematic map. Temporal results show in the west season, the highest macronutrient content is dominated by TN (0.587 ± 0.223) mg / L, NH3 (0.875 ± 1.290) mg / L and PO43- (0.390 ± 0.909) mg / L, while NO3- (0.185 ± 0.015 ) mg / L and TP (0.155 ± 0.026) mg / L highest during transitional season II. In the spatial approach, (S) with anthropogenic characteristics contribute to the whole height of the macronutrients. The effects of rainfall, anthropogenic pressure, aquatic hydrodynamics and the contribution of metabolic waste discharged from organisms, are thought to cause in the increasing of SAL macronutrients. Management and lagoon management strategies are required by the local government, stakeholders and communities to prevent the phenomenon of eutrophication of the lagoon. Key words: Macronutrient, Nitrogen, Phospate, lagoon of Segara Anakan

Kontaminasi Logam Berat As dan Hg pada Airtanah Dangkal di Wilayah Pesisir Semarang dan Demak Baskoro Rochaddi; Agus Sabdono; Muhammad Zainuri
Jurnal Kelautan Tropis Vol 22, No 2 (2019): JURNAL KELAUTAN TROPIS
Publisher : Universitas Diponegoro

The present study was performed to assess the level of heavy metal contamination in shallow groundwater of Pati and Rembang coastal areas. Groundwater sample analysis indicated that Mercury and Arsenic were detected in the groundwater samples in the range 0.004 µg L-1 and 0.115-0.310 µg L-1 , respectively. Compared to the standard limits of the heavy metals contents in the water sample by World Health Organization (WHO) limits and Indonesian Drinking and Domestic Water Quality Standard for Ground Water (IWQS), groundwater of Semarang and Demak Coastal Areas was contaminated with heavy metals. This study has confirmed the presence of heavy metal contamination of some shallow groundwater supplies in the coastal areas of Semarang and Demak.Penelitian ini dilakukan untuk menilai tingkat kontaminasi logam berat di air tanah dangkal di wilayah pantai Pati dan Rembang. Analisis sampel air tanah menunjukkan bahwa Merkurius dan Arsenik terdeteksi dalam sampel air tanah dalam kisaran 0,004 μg L-1 dan 0,115-0,310 μg L-1, masing-masing. Dibandingkan dengan batas standar kadar logam berat dalam sampel air oleh batas Organisasi Kesehatan Dunia (WHO) dan Standar Kualitas Air Minum dan Domestik Indonesia untuk Air Tanah (IWQS), air tanah Wilayah Semarang dan Demak telah terkontaminasi dengan logam berat. Studi ini telah mengkonfirmasi adanya kontaminasi logam berat dari beberapa pasokan air tanah dangkal di wilayah pesisir Semarang dan Demak.

Pemetaan Klasifikasi Dan Analisa Perubahan Ekosistem Mangrove Menggunakan Citra Satelit Multi Temporal Di Karimunjawa, Jepara, Indonesia Nurul Latifah; Sigit Febrianto; Hadi Endrawati; Muhammad Zainuri
Jurnal Kelautan Tropis Vol 21, No 2 (2018): JURNAL KELAUTAN TROPIS
Publisher : Universitas Diponegoro

Mapping of Classification and Analysis of Changes in Mangrove Ecosystem Using Multi-Temporal Satellite Images in Karimunjawa, Jepara, Indonesia Mangrove ecosystem is one of the three ecosystem in the coastal area which has important ecological role in supporting marine life and fisheries resources. These important roles include spawning ground and nursery ground for various marine organisms. However, in the last decades, mangrove ecosystem has been undergoing significant degradation. The aim of this research is to quantify the changes of mangrove coverage and density in Karimunjawa as well as key-factors leading to the changes. Supervised classification method (83% accuracy and Kappa coefficient 0.73%) was applied to satellite images to identify the temporal changes in mangrove coverage. Mangrove density was quantified using NDVI algorithm and NIR-RED wavelength. The result shows that during three periods of observed data, changes in mangrove coverage were significant: 126.81 ha increase (1992 – 2003); 82.37 ha decrease (1992 – 2017); and 209.18 ha decrease (2003 – 2017). Mangrove density in most part of Karimunjawa belongs to the category of ‘low’ (NDVI value: -1 – 0.33). Key factors contributing to the decrease mangrove coverage are deforestation, natural phenomena, land conversion into fish ponds and hotels. The only increase in the year 1992 – 2003 was caused by high sedimentation level that allows more mangroves to grow. Overall, the methods in this research could be used as an approach to describe to effectively monitor the changes of mangrove coverage in an area as basic data for sustainable environmental management. Ekosistem mangrove merupakan salah satu dari tiga ekosistem pesisir yang memiliki peranan ekologis penting dalam mendukung kehidupan dan keberlangsungan dari sumberdaya perikanan. Hal tersebut dikarenakan fungsi mangrove sebagai tempat memijah dan asuhan bagi banyak biota air. Beberapa dekade terakhir keberadaan dari ekosisitem mangrove mengalami degradasi yang sangat signifikan. Tujuan dari penelitian ini adalah untuk mengetahui perubahan luasan dan kerapatan mangrove dan mengidentifikasi faktor penyebabnya. Metode analisa perubahan luasan mangrove menggunakan citra satelit multi temporal dengan dilakukan pembuatan klasifikasi menggunakan metode supervised classification dengan nilai akurasi total 83% dengan Kappa koefisien 0,73%. Setelah terseleksi antara mangrove dan non mangrove maka dilakukan perhitungan kerapatan tajuk menggunakan algoritma NDVI dengan memanfaatkan panjang gelombang NIR dan RED. Hasil analisa spasial dengan rentang 3 tahun berbeda didapatkan perubahan penurunan dan penambahan luasan mangrove terjadi secara signifikan: tahun 1992 – 2003 telah terjadi penambahan luasan sebesar 126,81 ha; tahun 1992–2017 terjadi perubahan luasan sebesar 82,37 ha; tahun 2003–2017 terjadi perubahan luasan sebesar 209,18 ha. Kerapatan mangrove di Karimunjawa sebagian besar tergolong kategori kerapatan jarang dengan nilai NDVI antara -1 – 0,33. Faktor utama penyebab penurunan luasan mangrove antara lain penebangan liar, faktor alam, perubahan fungsi lahan menjadi pertambakan dan perhotelan. Penambahan luasan mangrove terjadi pada antara tahun1992 sampai 2003 hal tersebut disebabkan sedimentasi yang menumpuk di pantai dan sudah ditumbuhi oleh mangrove. Secara keseluruhan metode ini dapat menggambarkan perubahan secara efektif serta hasilnya dapat dipergunakan untuk pemantauan dan perencanaan ekosistem mangrove di suatu wilayah.

Co-Authors . Juliana A Arwiyah AB, Balik Jaya Abdul Ghofar Abdus Salam Junaedi Afifa, Fitria Hersiana Agnadiva, Alisha Khansa Agrandis, Nanda Agung Suprihadi Agung Suprihadi Agus Hartoko Agus Indarjo Agus Nur Fahmi Agus Sabdono Agus Subagio Ahmad Fadlan Ahnan, Maftuh Aini, Firly Nur Aisyaroh, Masrifatul Akhmad Farid Akrom, Akrom Al-Mansury, Abdul Hamid Alfan Biroli, Alfan Alfi Satriadi Amalya, Afroh Ambariyanto , Ambariyanto Ambariyanto Ameylia Ayu Puspitasari Anastasia Rita Tisiana D. K. Anastasia Tisiana Dwi Kuswardani Andita Agung Andreas Nur Hidayat Andriansyah, Dhito Maulana Anggoro, Naufal Sebastian Anindya Wirasatriya Anisa Dewi Nugraheni Anistia Malinda Hidayat Anjani, Revi Putri Dwi Annisa Fadillah Annisa Nur Ayuningtyas Antik Erlina Anto Budiharjo Ardiansyah Desmont Puryajati Argiandini, Devita Mega Arif Mustofa Aris Ismanto Arrayanul Jannah, Annisa Asih Rismiarti, Asih Asnawati Asnawati Asrudi, Lutfia Ardita Mayra Putri Awaludin, Aji Ayu Wijayanti, Diyah Ayu Zuanita Susanto, Chulud Azhary, Abrar Dalisfasha Azis Rifai Aziz Nur Bambang Azka, Raven Naufal Baskoro Rochaddi Baskoro Rochaddi Baso Mukramin Bayu A Pranoto Bayu Priyono Budi Raharjo Chandra, AB. Chandra, Adyos Bobby Chatarina Umbul Wahyuni Chrisna A Suryono Darminto . Dede Yusuf, Dede Deki Lukman Wicaksono Deki Lukman Wicaksono Denny Nugroho Sugianto Desriyanti Devi Yuni Sari Sihombing Dewi Masyitoh Syihab Dierrisska, Pudja Handjanny Nastitie Dimas Eko C Dinda Ayu Octaviana Dini Puspodewi Dionisia Dini Nugraheni Doktorasaintifika, Heradita Kaniaazzahra Dwi Haryo Ismunarti Dwi Haryo Ismunarti Dwi Yuliasari Dwian Lumbangaol Edy Supriyo Efendy, Erika Noviyana Eka Riadi Elis Indrayanti Elke Gildantia Elsa Lusia Agus Endang Kusdiyantini Euniche R.P.F. Ramandey Fabian Panji Ayodya Fahmi, Muhammad Hanif Faiz Hamzah Adriono Faizin, Muhammad Sahrul Fajrin, Muhamad Nur Al Fauzy, Yuhansyah Nur Febi Ayu Pramithasari Febrianto, Sigit Fery , Lasiyano A Finna Widya Ariani Fiona Aqhila Dewi Firman Farid Muhsoni Fortunata Riana Francisco Ade Fristanto Fredyansyah, Maulana Alfi Frida Fanani Rohma Frijona Fabiola Lokollo Gabriella Inez Aramita Galih Tristianto Galuh Permatasari Ganis T.K, Ganis Gatot Yulianto Gentur Handoyo Gizka Anindya Putri Goff, Virginia Andrews- Graha, Dorin Satya Greenaty Hidayah Gymnastiar, Muhammad Hadi Endarwati Hadi Endrawati Hadi Endrawati Hadi Endrawati Hafiludin, H Hafiludin, Hafiludin Hamdhana, Raka Anugrah Hanjaya, Rayen Harfatia Chandra Puspita Sari Hariyadi . Haryo Triajie, Haryo Heksa Raihan Herida, Azalia Puspa Hermin P Kusumaningrum Hermin Pancasakti Kusumaningrum Hersugondo Hersugondo Herusugondo Herusugondo Heryoso Setiyono Hidayat, Ryan Akhmal Hilyati Fajrina Ibrahim, Rosita Ida Noventalia Ika Putri Hindaryani Imam Misbach Imam Mishbach Iman, Hudiya Izzatul Indah Puji Astuti Indah Wahyuni Abida Indra Budi Prasetyawan Indra Budi Prasetyawan Indras Marhaendrajaya Ita Riniatsih Ita Widowati Iwan Yahya Izzudin, Maulana Zidan Jarot Marwoto Jihadi, Muhammad Shulhan Johanes Hutabarat Juliansyah, Aryo Junaedi, Abdus Salam Karima, Zalfa Kevifa Satria Widjaya Khoirun Nisa kholiq, Mad Kholizah, Nur Kresnasari, Dewi Kunarso Kunarso Kusuma, Aurora Nur Kusumaningrum, Hermin La Tansa, Zaki Lachmuddin Syaâ€™rani Laksani, Mertiara Ratih Terry Lilik Maslukah Lilis Sugiarti Lukman, Annisa Aulia Lusi Lastria M. Sholeh Maharani, Galung Dhiva Maharani, Salsabila Dewi Mahardiani Putri Naulia Batubara Mahardiani Putri Naulia Batubara Mahendrajit Yudhantoko, Mahendrajit Mahfud Efendy Maisaroh, Dian Sari Manik, Tetti Novalina Marliantari, Sulistina Maro, Jahved Ferianto Mashuri Mashuri Masrifatul Aisyaroh Max Rudolf Muskananfola Maya Angaraini Fajar Utami Meida Yustiana Merican, Marcelino Ricky Mertiara Ratih Terry Laksani Michael Abbey Mirza Nadia Misbach, Imam Mochamad Iqbal Herwata Putra, Mochamad Iqbal Mochammad Facta Moh Holli Mohammad Arsyad Mudawam, Mohammad Reza Muh Yusuf Muh Yusuf Muh Yusuf Muh. Yusuf Muhammad Helmi Muhammad Iskandar Zulkarnain Muhammad Iskandar Zulkarnain Muhammad Sababa Alhaq Muhammad Wahyu Firmansyah Muhammad Wahyu Romadhon Mumtaz, Fathiyah Muslim Muslim Mustagfirin Mustagfirin Mustagpirin Mustagpirin Mutmainah, Nur Fitri Nabilah Rizki Nawawi, M Anwar Nelly Florida Riama Nexvia, Cinta Marshanda Ningrum, Devita Ningrum, Riska Widyah Nisa', Khoirun Nisrina Nisrina Noor, Rifky Fadlian Novi Indriyawati Novianti, Teni Novita Ayu Ryandhini Nugroho Agus D Nurafni Tumanggor Nurhayati Nurhayati Nurhayati Nurhayati Nurindahsari Niken Larasati Nurul Latifah Nurwahid, Ahmad Ohee, Henderite Loisa Okti Hajeng Kristiadi Pahlevi, Firdha Maudiyah Pahlevi, Firdha Maulidyah Pancasakti, Hermin Panji Ayodya Parichat Wetchayont Parry, Markus Julio Person Pesona Renta Petrus Subardjo Poma, Yoniva Nandarista Pradipta, Zulfa Abkar Pradiva, Zahra Aninda Pratiwi, Putri Ajeng Primaswatantri Permata Pudja Handjanny Nastitie Dierrisska Puguh Sujarta Purwanto Purwanto Purwanto Purwanto Purwanto Purwanto Puspitasari, Radita Putri Puspitasari, Vita Ayu Putri Asrudi, Lutfia Ardita Mayra Putri Wahyuningtyas, Putri Rahmad Triadi Rahmadiana Andini Rahman Rahman Ramadhani, Mohammad Rifli Rejeki Siti Ferniah Reksajaya, Puspaningtyas Mutiaraputri Renni Yuniati Restu Nur Afi Ati Resy Sekar Sari Retno Hartati Rezfiko Agdialta Ria Azizah Rica Dewanty Ricky Daniel Aror Ridarto, Arij Kemala Yasmin Rifky Aryasatya Risian, Muhammad Haiqal Aulia Rizka Rahmana Putri Rizka, Rizka Yuliana Robertus Triaji Mahendrajaya Rose Dewi Rose Dewi Rose Dewi Rosikhul Islah I Rosita, Rosita Ibrahim Rosmeiuli Panjaitan Rudhi Pribadi Rudhi Pribadi S R Wahyudi Safikri, Ilham Safitri, Talitha Aulia Nadifah Sakti Pancar Emak Santoso, Tanto Budi Sasmita, Salma Ayu Shaliha, Shaliha Shanas Septy Prayuda Sidhi Saputra Simatupang, Ariel Oscar Paskario Simon Sadok Siregar, Simon Sadok Siti Jubaedah Siti Nur Jannah Solly Aryza Sri Amini Sri Redjeki Sri Redjeki Sri Rejeki Sri Yulina Wulandari Subagiyo Subagiyo Subono, Maulana Sudjadi Sugeng Widada Sulaiman, Zainal Muttaqien Sulis Setyowati, Sulis Sulistyowati Sulistyowati Sulistyowati Sulistyowati Suradi Widjaya Saputra Suryani, Oda Gracia Ariela Suryanti - Suryono Suryono Suryono Suryono Sutrisno Anggoro Sutrisno Anggoro Syaifudin Syarani, Lachmudin Syarifah, Wasiqatus Syawallita, Ridha Olnis Teni Novianti Timur, Galang Sandi Titik Susilowati Tjahjo Winanto Tony Hadibarata, Tony Topo Yono Tri Widya Laksana Putra Ummu Salma Vaviansyah, In’am Wahyu Budi Setyawan Wahyu Dewi Utari Haryanti Wahyuni, Ananda Wahyuningsih, Candra Wardani, Adella Eka Warsito Atmodjo Wati, Tarisa Sholikha Wiarta, Rinto Widianingsih Widianingsih Widianingsih Widianingsih Widiaratih, Rikha Widodo S Pranowo Widodo Setiyo Pranowo Wijanarka Wijanarka Winona Abigail Witria Witria Yann Hardivillier Yopie Anggara Putra Yopie Anggara Putra, Yopie Anggara Yosafat Donni Haryanto Yoshua Mario Sumbodo Yulia Ulfah Yunan Sepda Kurnyanda Yuniar Andri Sulistiyanto Yusuf Jati Wijaya Yuvita Muliastuti Zulfiandi Zulfiandi

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