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Journal of Marine Research

jmr
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Published by Universitas Diponegoro

ISSN : - EISSN : 24077690 DOI : 10.14710/jmr.v9i4.28340

Core Subject : Science,

Earth & Planetary Sciences

The Journal of Tropical Fisheries Management is managed by the Department of Water Resource Management, Faculty of Fisheries and Marine Sciences, Bogor Agricultural University aims to publish the results of basic, applied research in the scope of fisheries resources, fish stock studies, and population dynamics, fish biodiversity, fisheries technology, industrialization and fish trade, fisheries management, and fisheries development policies in the tropics, especially Indonesia. The scope of the area includes: Marine Fisheries Coastal Fisheries Inland Fisheries The focus and scope of this publication are expected to contribute thoughts for the government to strengthen the science of fisheries management

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Articles 825 Documents

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Aktivitas Antioksidan dan Kandungan Total Fenolik Pada Teripang di Perairan Karimunjawa, Jepara Avigail, Yolanda; Yudiati, Ervia; Pringgenies, Delianis
977-2407769
Publisher : Departemen Ilmu Kelautan, Fakultas PerikanJurusan Ilmu Kelautan, Universitas Diponegoro

Teripang merupakan hewan jenis Echinodermata. Beberapa species teripang, misalnya H. scabra, H. fuscogilva dan T. ananas memiliki nilai jual yang tinggi. Meskipun tidak semua spesies memiliki nilai jual yang tinggi, teripang berpotensi untuk dikembangkan dalam bidang kesehatan, terutama dalam kemampuannya untuk meredam radikal bebas dan mencegah berbagai penyakit degeneratif. Tujuan dari penelitian ini yaitu untuk mengidentifikasi, menentukan aktivitas antioksidan, kandungan total fenol, serta kadar karotenoid pada ekstrak beberapa teripang yang berasal dari Perairan Karimunjawa Jepara. Hasil identifikasi dari ke empat spesies adalah Stichopus cf. quadrifasciatus, Pearsonothuria graeffei, Bohadschia vitiensis, dan Holothuria atra. Ekstraksi dilakukan dengan teknik maserasi dinding tubuh teripang menggunakan pelarut metanol. Uji aktivitas antioksidan dilakukan dengan menggunakan metode DPPH (1,1-difenil-pikrilhidrazil) sebagai agen radikal bebas. Penentuan total fenolik dilakukan menggunakan metode folin-ciocalteu, dan penentuan kadar karotenoid dilakukan dengan menggunakan spektrofotometer. Hasil menunjukkan bahwa aktivitas antioksidan Bohadschia vitiensis, Stichopus cf. quadrifasciatus, Pearsonothuria graeffei, dan Holothuria atra tergolong sangat lemah dengan nilai IC50 secara berturut-turut adalah sebesar 454,28 Â± 14,4; 713,51 Â± 9,1; 801,57 Â± 8,4 dan 1535,47 ppm. Kandungan total fenol sebesar 21,08 Â± 0,49; 14,325 Â± 0,21; 14,033 Â± 0,33 dan 10,67 Â± 0,12 mg GAE/g sampel, dan kadar karotenoidnya sebesar 23,28 Â± 0,07; 25,78 Â± 0,56; 11,85 Â± 0,04; dan 41,44 Â± 0,008 Âµmol/g sampel.Kata kunci: Teripang, Antioksidan, DPPH, Fenolik, KarotenoidÂ Sea cucumbers are sea benthos from phylum Echinoderms phylum. Some sea cucumbers such as H. scabra, H. fuscogilva, T. Ananas have a high economical price. Eventhough, some sea cucumbers have the potency of being a healthy food. It it scientifically proven that some sea cucumbers have the ability to reduce free radicals and prevent various degenerative diseases caused by the excessive free radicals. The aims of this study were to identified, determine antioxidant activity, total phenol content, and carotenoid levels in sea cucumber extracts originally from Karimunjawa waters. Some of the sea cucumbers obtained are Stichopus cf. quadrifasciatus, Pearsonothuria graeffei, Bohadschia vitiensis, and Holothuria atra. The extraction was done by macerating the body walls with methanol. The antioxidant activity test were tested using the DPPH method as free radicals, the total phenolic content tested using the folin-ciocalteu method, and determined the carotenoid levels spectrophotometrically. Based on the results, antioxidant activity ofÂ B. vitiensis, S. cf. quadrifasciatus, P. graeffei, and H. atra were Â classified as very weak with IC50 454.28 Â± 14.4; 713.51 Â± 9.1; 801.57 Â± 8.4 dan 1535.47 ppm. Total phenolic content were 21.08 Â± 0.49; 14.325 Â± 0.21; 14.033 Â± 0.33 dan 10.67 Â± 0.12 mg GAE / g samples, while carotenoid levels were 23.28 Â± 0.07; 25.78 Â± 0.56; 11.85 Â± 0.04; dan 41.44 Â± 0.008 Âµmol / g sample.Keyword : Sea cucumber, Antioxidant, DPPH, Phenolic, CarotenoidÂ Â

Potensi Antibakteri Ekstrak Rumput Laut Terhadap Bakteri Penyakit Kulit Pseudomonas aeruginosa, Staphylococcus epidermidis, dan Micrococcus luteus Siregar, Angelina Ferawaty; Sabdono, Agus; Pringgenies, Delianis
977-2407769
Publisher : Departemen Ilmu Kelautan, Fakultas PerikanJurusan Ilmu Kelautan, Universitas Diponegoro

Along with the increasing resistance of bacteria in the health world, it is necessary discover a new drug. Sources of new antibacterial bioactive compounds can be obtained from seaweeds. The purposes of the research were to determine the antibacterial activity of crude extract seaweed againts the skin disease bacteria, Pseudomonas aeruginosa, Staphylococcus epidermidis and Micrococcus luteus, and to identify classes of compounds contained in crude extract of seaweed. This research was done from January to Mei 2012. Seaweeds sampling (Caulerpa sp, Eucheuma sp, Gracilaria sp dan Sargassum sp) was conducted in territorial water of Jepara. Extraction process and analysis of bioactive compound of crude extracts was conducted at Laboratory, Marine Science Department, Diponegoro University, Semarang. Test antibacterial activity was conducted at Medicine Laboratory, Ungaran. The method used in this research was experimental laboratories. Extraction process was conducted with solid-liquid extraction method. Extract were tested for antibacterial activity by agar diffusion method according to Kirby-baurer. Based on the antibacterial activityâ€™s assay, 12 extracts which have antibacterial activity against test bacteria P. aeruginosa, S. epidermidis and M. luteus were obtained the 12 seaweed extracts the highest consentration of inhibition zone was 200 Âµg/disk in ethyl acetate extract of the Sargassum sp was the most active extracts against bacteria P. aeruginosa and M. luteus, while the methanol extract of Sargassum sp was the most active extracts against the bacteria S. epidermidis. Steroids was the most dominant compounds on all of 12 seaweed extracts.

Kajian Kesesuaian Dan Daya Dukung Kawasan Pesisir Pantai Nglambor Kab. Gunungkidul Yogyakarta Sebagai Kawasan Wisata Bahari Fery Surya Nugraha; Adi Santoso
Journal of Marine Research Vol 7, No 3 (2018): Journal of Marine Research
Publisher : Departemen Ilmu Kelautan, Fakultas PerikanJurusan Ilmu Kelautan, Universitas Diponegoro

ABSTRAK : Dalam perkembangan dunia pariwisata sekarang ini, jenis pariwisata di Indonesia yang sedang digemari adalah pariwisata yang berbasis lingkungan (alam) dan pariwisata yang berbasis sejarah. Obyek wisata Pantai Nglambor merupakan sebuah pantai yang terletak di Desa Purwodadi, Kecamatan Tepus, Kabupaten Gunungkidul. Pantai Nglambor berada dalam satu kawasan dengan Pantai Siung. Pantai Nglambor memiliki berbagai potensi alam dan budaya yang cukup menarik, namun potensi yang ada belum dikelola secara maksimal oleh pemerintah desa maupun masyarakat setempat. Penelitian ini bertujuan untuk menentukan lokasi yang sesuai untuk pengembangan kegiatan wisata bahari, mengetahui luasan area pengembangan kegiatan wisata bahari, mengetahui luasan area pengembangan kegiatan wisata pantai. Penelitian ini dilakukan pada bulan Maret-November 2016. Metode penelitian ini digunakan dalam bentuk metode deskriptif. Untuk analisis data penelitian ini menggunakan metode non parametrik yaitu indeks kesesuaian wisata (IKW) dan analisis daya dukung kawasan (DDK). Berdasarkan perhitungan yang telah dilakukan, seluruh stasiun pengamatan (stasiun 1, 2, dan 3) memiliki nilai Indeks Kesesuaian Wisata (IKW) diatas 80% dengan rincian sebagai berikut: di stasiun 1 dengan nilai IKW sebesar 98,85%; di stasiun 2 nilai IKW 94,25%; serta stasiun 3 memiliki nilai IKW sebesar 90,804%, yang artinya bahwa di semua stasiun pengamatan (stasiun 1,2 dan 3) masuk kedalam kategori kesesuaian wisata sangat sesuai (S1) sebagai kawasan wisata pantai. Kegiatan wisata yang dapat dikembangkan antara lain, Snorkeling, Berjemur dan Susur pantai. Luas area yang dapat dimanfaatkan adalah sekitar 159,798 m2 dan memiliki daya tampung maksimal 392 orang untuk melakukan kegiatan wisata pantai efektif harian. ABSTRACT : In the development of world tourism, the environmental and hystorical based tourism are most popular tourism in Indonesia right now. Tourism of Nglambor Beach is a beach located in the village of Purwodadi, Tepus sub-Regency, Gunungkidul Regency, Special Region of Yogyakarta. Nglambor beach is located in an area with Siung beach. Nglambor Beach has a variety of natural and cultural potential which is interesting enough, but the potential has not yet been managed optimally by the Government of the village as well as the local community. This Study inteded to assign suitable location for development marine tourism activity, know extents area development and capacity unit area that intended of tourism activity beach tourism. The research has been done from March till November 2016. This research methods used tourism compliance index (IKW) and carrying capacity analysis (DDK). Based on the calculations that have been done, the whole observation station (station 1, 2, and 3) has an suitability analysis of the area (IKW) above 80% with details as: at station 1 with a value of IKW 98,85%; at station 2 value of IKW 94.25%; as well as the station 3 has a value of 90,804%, the IKW. This area has a category S1 (very suitable). Other tourism activities that can be developed are Snorkeling, Sun bathing, and Fringing the beach. The area can be promoted is 159.798 m2 and has capacity of maximum 392 person tourist effective daily.

Stimulasi Fission Pada Reproduksi Aseksual Teripang Holothuria atra Muttaqin, Aklif Reza; Hartati, Retno; Wibowo, Edi
977-2407769
Publisher : Departemen Ilmu Kelautan, Fakultas PerikanJurusan Ilmu Kelautan, Universitas Diponegoro

The production of sea cucumber in the wild has declined, it is due to excessive use and arrests for cultivation without any effort. Sea cucumber are generally reproduce sexually and asexually. Sexual reproduction through spawning and gametogenesis while, asexual reproduction through fission. Fission is the process of splitting a part of the specimen anterior, middle and posterior to the cucumber. The third part will grow into a new individual after each able to regenerate the missing parts of the specimen. Fission on sea cucumber can be stimulated by binding on the body of sea cucumber. The research was conducted in April-July 2012 in Bandengan, Jepara in order to objectives determine the success rate of asexual reproduction and regeneration rate and survival rate in sea cucumber Holothuria atra fission yield. The method used was experimental research in the field. The results of this study indicate the success rate of asexual reproduction in the sea cucumber H. atra fission yield was higher in H. atra large groups with a fission plane. At this stage of the regeneration of the posterior H. atra large groups with a fission plane is the most rapid in the middle regenerate regenerate while the slowest. Highest survival rate found in H. atra large groups with a fission plane, especially in the posterior.. Totality, post stimulated sea cucumber by fission would processing fission, wound closing process, regeneration process will form a mouth and new anus.

Analisis Kondisi Lingkungan Pada Kawasan Rehabilitasi Mangrove Di Kota Semarang Hermayanti, Hilda Yuli; Tri Nuraini, Ria Azizah; Soenardjo, Nirwani
977-2407769
Publisher : Departemen Ilmu Kelautan, Fakultas PerikanJurusan Ilmu Kelautan, Universitas Diponegoro

Keberadaan hutan mangrove, khususnya di Kota Semarang sangat rentan terhadap berbagai macam kerusakan yang ditimbulkan akibat erosi, abrasi dan konversi lahan, sehinga perlu dilakukan upaya rehabilitasi untuk memulihkan kembali kondisi hutan mangrove. Kegiatan rehabilitasi memang sudah dilakukan, tetapi tingkat keberhasilan di tiap kawasan memiliki perbedaan yang cukup bervariasi tergantung dari kondisi lingkungan setempat. Penelitian ini dilaksanakan pada bulan Oktober-Desember 2013 di kawasan rehabilitasi mangrove Kelurahan Karanganyar dan Pantai Maron Kelurahan Tambakharjo, Semarang. Metode yang digunakan dalam penelitian ini adalah studi kasus. Hasil dari penelitian ini menunjukkan bahwa kondisi lingkungan perairan di kawasan rehabilitasi mangrove Kelurahan Karanganyar dan Pantai Maron Kelurahan Tambakharjo, Semarang sesuai bagi kehidupan mangrove. Hal ini terlihat dari sebagian besar parameter lingkungan perairan yang masih berada dalam batas kisaran optimum bagi kehidupan mangrove

Kajian Perubahan Luas Laguna di Pantai Samas, Kabupaten Bantul dengan Menggunakan Citra Satelit Landsat Multi-temporal Saputra, Rifky; Subardjo, Petrus; ADS, Agus
977-2407769
Publisher : Departemen Ilmu Kelautan, Fakultas PerikanJurusan Ilmu Kelautan, Universitas Diponegoro

Samas beach lagoon is a unique and rare ecosystem, as well as being an area of tourism. One of the great river that empties into the Laguna Samas carry sediment material which will further lead to changes in the shape of land in the area. One impact of the change in shape in the area is the ever-expanding or narrowing of the land caused by the process of sedimentation. Sedimentation process is rapid and continuous this will damage the ecosystem Laguna Samas. To overcome this need to be monitoring the events that lead to environmental degradation. This activity is necessary to obtain accurate data and information and the actual on coastal and marine issues being faced today. The method used in this research is descriptive method, which is a study to create a picture of the situation or event that researched and studied in a limited time and place, to get an idea of the situation or conditions locally. In addition, this study also uses remote sensing techniques (visual interpretation using screen digitalizing techniques and field surveys). The material used in this study are Landsat images. Within 15 years, Laguna Samas and extensive changes shape significantly. Vast changes that have occurred in the lagoon research in the period between 1994 to 2001 had an area of 45.53 ha of erosion and accretion area of 13.58 ha. Changes vast lagoon in 2001 to 2005 was eroded area of 58.86 ha and 36.39 ha area accretion. And extensive changes in the lagoon in 2005 to 2011 had an area of 28.07 ha of erosion and accretion area of 58.38 ha. So, in 1994 until 2005, it had added vast lagoon waters, and in 2005 to 2011 extensive shrinkage or constriction waters. These results were obtained from the Landsat 5 satellite imagery overlay TM in 1994, Landsat 7 ETM 2001, Landsat 7 ETM 2005 and Landsat 7 ETM in 2011.

Model Pertumbuhan Dan Status Sumberdaya Panulirus homarus Di Cilacap, Jawa Tengah Baskoro, Maulvi Didit; Kushartono, Edi Wibowo; Irwani, Irwani
977-2407769
Publisher : Departemen Ilmu Kelautan, Fakultas PerikanJurusan Ilmu Kelautan, Universitas Diponegoro

Lobster pasir (Panulirus homarus) merupakan salah satu jenis lobster yang banyak di temukan di perairan Indonesia. Penelitian ini dilaksanakan pada bulan November 2017 sampai bulan Februari 2018 dengan lokasi pengambilan sampel di Pelabuhan Perikanan Samudra Cilacap (PPSC), di Perairan Cilacap Penelitian ini melihat bagaimana model pertumbuhan, dan status sumberdaya, mulai dari Von Bertalanffy, CPUE dan MSY. Estimasi parameter pertumbuhan lobster pasir (Panulirus homarus) dihitung dengan aplikasi Fisat II. Didapatkan hasil model pertumbuhan lobster pasir ( Lâˆž = 93.66 cm , K = 0.780 dan t0 -1.0950 mm). Hasil CPUE didapatkan persamaan, nilai linier sebesarÂ y = -0.0002 + 0.0965 x, nilai R2= 0,09443 untuk data lima tahun ke belakang terhitung dari 2012 sampai 2016 dalam upaya penangkapan (Panulirus sp.). Analisa Maximum sustainable yield (MSY) di lakukan untuk mengetahui besarnya potensi lestari Panulirus sp. dengan registrasi linier y-0.0002x + 0.965. Pendugaan MSY dan upaya penangkapan Foptimum diperoleh dengan 2412 trip dan nilai MSY 1164.031. Produksi Panulirus sp. di tahun 2016 â€“ 2017 di Perairan Cilacap mengalami kenaikan, pada tahun 2016 terjadi kenaikan di bulan Februari, Maret, April dan Desember. Sedangakan pada tahun 2017 terjadi kenaikan di bulan Maret dan Oktober. Kenaikan ini dikarenakan musim lobster berada di bulan Oktober hingga Februari. Perubahan iklim dan penangkapan yang melebihi batas akan berpengaruh terhadap ukuran dan stok Panulirus sp. di alam.Â The Spiny lobster (Panulirus homarus) is one species of lobster that is widely found in Indonesian. This research was conducted on November 2017 until February 2018 the sample locations at the Cilacap (PPSC), which observedÂ the growth of models, and the status of resources, regretion Von Bertalanffy Growth function CPUE and MSY. The estimated growth parameters of sand lobster (Panulirus homarus) wereÂ calculated using Fisat II application. The results of the spiny lobster Â growth Â model were obtained (Lâˆž = 93.66 cm, K = 0.780 and 0 -1.0950 mm). The CPUE results were obtained equations, linear values of y = -0.0002 + 0.0965 x for five years data from 2012 to 2016 . The Maximum Sustainable Yield (MSY) analysis was carried out to determine the magnitude of the sustainable potential of Panulirus sp. within linear Â y-0.0002x + 0.965. The MSY values 1164,031 estimation and (Foptimum) fishing effort were 2.412 trips and MSY values 1164,031. TheÂ production of Panulirus sp. start fromÂ 2016 to 2017 in the Cilacap has increased, the fact in 2016 there was an increase on February, March, April and December, while in 2017 there was an increase on March and October. So that the increase due to the lobster season being in October to February.Â In addition, climate alteration and capture exceed the effect ofÂ size and stock of Panulirus sp.

Struktur Komunitas Zooplankton di Perairan Morosari, Kecamatan Sayung, Kabupaten Demak Noventalia, Ida; Endrawati, Hadi; Zainuri, Muhammad
977-2407769
Publisher : Departemen Ilmu Kelautan, Fakultas PerikanJurusan Ilmu Kelautan, Universitas Diponegoro

Morosari waters is an area with high dynamics due to rob or high tide phenomenon, which affects the community structure of zooplankton in the waters. The purpose of this study was to investigate community structure of Zooplankton around Morosari waters, Sayung District, Demak Regency. This research was conducted in the Morosari waters, Sayung District, Demak Regency. This study uses an exploratory method with data collection methods using the Sample Survey Method. Three location were stablished for this research namely Location 1 is a Morosari river estuary area, Location 2 is an area of aquaculture, Location 3 is a Pandansari river estuary area. Samples were taken 5 times, during early July to early October 2011 using a planktonnet with 45 Î¼m mesh size, sampling was done vertical sampling and horizontal sampling. The results of this study showed 41 genera for the vertical, and 45 genera for the horizontally. Average abundance obtained by the observation station was 18,40 ind/l for the vertical, and 4,80 ind/l for the horizontal. Index zooplankton diversity showed medium and obtained the average gain by the station is 2,44 for the vertical and 2,59 for the horizontally. Uniformity index indicates the type of high uniformity and obtained the average by the station is 0,87 for the vertical, and 0,80 for the horizontal. Dominance index obtained average based on the observation station is 0,12 for the vertical, and 0,31 for the horizontal.

PEMETAAN TINGKAT KERAWANAN TSUNAMI DI PANTAI PARANGTRITIS DENGAN MENGGUNAKAN SISTEM INFORMASI GEOGRAFI Qoriadi, M. Taufan; Subardjo, Petrus; Helmi, Muhammad
977-2407769
Publisher : Departemen Ilmu Kelautan, Fakultas PerikanJurusan Ilmu Kelautan, Universitas Diponegoro

Tsunami is one of the natural events that can not be predicted. The causal of tsunami can be submarine earthquake, submarine volcanic eruptions, or submarine landslide. The mapping of tsunami vulnerability in Parangtritis Beach is an effort of disaster mitigation to minimize the negative impact of tsunami. The research is aimed to map the vulnerability of tsunami disaster in the area of Parangtritis Beach. There are five classes of vulnerability level i.e. very vulnerable class, vulnerable class, slightly vulnerable class, safe class, andvery safe class. The places in Kretek Sub-district which are rated vulnerable (very vulnerable, vulnerable, and slighty vulnerable) is covering the area of 1.334,22 hm2 or 52,93 % of Kretek Sub-district. The places in Kretek Subdistrict which are rated safe is covering the area of 1.186,27 hm2 or 47,06% of Kretek Subdistrict.

Aplikasi Citra Sentinel-2 untuk Pemetaan Sebaran Material Padatan Tersuspensi Di Muara Sungai Wulan Demak Prasetiyo, Bayu Adi; Rochaddi, Baskoro; Satriadi, Alfi
977-2407769
Publisher : Departemen Ilmu Kelautan, Fakultas PerikanJurusan Ilmu Kelautan, Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/jmr.v8i4.25193

ABSTRAK : Sungai Wulan yang terletak di Kabupaten Demak digunakan masyarakat sebagai jalur keluar dan masuknya kapal nelayan serta saluran pembuangan utama. Hal tersebut berdampak pada besarnya kandungan material padatan tersuspensi yang terdapat pada sungai. Pengamatan sebaran material padatan tersuspensi dibutuhkan untuk mengetahui pola sedimentasi dan penilaian kualitas air. Tujuan dari penelitian ini adalah untuk mengetahui sebaran material padatan tersuspensi di muara Sungai Wulan menggunakan metode pengindraan jauh. Data yang digunakan dalam penelitian ini adalah citra satelit Sentinel-2 dan konsentrasi material padatan tersuspensi hasil uji gravimetri. Pengolahan data menggunakan algoritma Lemigas (1997), Budhiman (2004), Parwati (2006), Laili (2015) dan Metode Regresi (Linear, Eksponensial dan Logaritmik). Hasil analisis data menunjukkan bahwa konsentrasi material padatan tersuspensi di sekitar muara relatif rendah, sedangkan konsentrasi yang tinggi terdapat di arah timur muara sungai atau di daerah yang berupa teluk. Algoritma yang memiliki nilai error terkecil adalah algoritma Metode Regresi dengan MRE sebesar 10,12% dengan nilai RMSE sebesar 4,3493. Berdasarkan hasil yang didapat, dapat disimpulkan jika algoritma Metode Regresi merupakan algoritma yang paling sesuai untuk pemetaan sebaran material padatan tersuspensi di muara Sungai Wulan, Demak.Â ABSTRACT : The Wulan River which located in Demak Regency is used by people as an entrance point for fishing boats and the main sewers. These have an impact on the amount of total suspended solid contained in the river. Observation about the distribution of total suspended solid is needed to determine sedimentation patterns and water quality assessments. The purpose of this study is to determine the distribution of total suspended solid at the Wulan River estuary using remote sensing method. The data used in this study is Sentinel-2 satellite imagery and the concentration of total suspended solid from gravimetric test. Processing data using Lemigas algorithm (1997), Budhiman (2004), Parwati (2006), Laili (2015) and Regression Method (Linear, Exponential and Logarithm). The results of data analysis show that the total suspended solids distribution at the estuary is relatively low, while the high consentration of total suspended solid is found at the east of the river estuary or in the area that form a bay. Algorithm that has the smallest error value is the regression algorithm with MRE value is 10.12% and RMSE value is 4.3493. Based on the results obtained, it can be concluded that the algorithm with regression method is the most suitable algorithm for mapping the distribution of total suspended solid at the mouth of the Wulan River, Demak.Â Â

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