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Journal of Marine Research
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
Arjuna Subject : -
Articles 825 Documents
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Studi Karakteristik Sarang Semi Alami Terhadap Daya Tetas Telur Penyu Hijau (Chelonia mydas) di Pantai Paloh Kalimantan Barat Nugroho, Aditya Dwi; Redjeki, Sri; Taufiq-SPJ, Nur
977-2407769
Publisher : Departemen Ilmu Kelautan, Fakultas PerikanJurusan Ilmu Kelautan, Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (507.322 KB) | DOI: 10.14710/jmr.v7i1.25886

Abstract

ABSTRAK : Populasi penyu hijau (Chelonia mydas) saat ini mulai berkurang bahkan sudah masuk kedalam hewan terancam punah dan semakin menyempitnya habitat bertelur akibat rusaknya vegetasi pantai diduga salah satu penyebab turunnya populasi penyu hijau. Keberhasilan penetasan telur penyu hijau ditentukan oleh kondisi lingkungan dan posisi sarang. Penelitian ini bertujuan untuk mengetahui karakteristik sarang semi alami. Sampel sarang secara dipilih secara rata setiap lahan, penelitian ini menggunakan tiga lahan yaitu lahan terbuka, lahan semak, dan lahan bawah pohon. Jumlah sarang yang digunakan sebanyak 13 sarang. Persentase penetasan penyu hijau di Pantai Paloh yang bervariasi dari 47,78-93,74%. 75% yang berhasil menetas dari sarang yang berada di lahan semak. Sarang teduh menunjukkan angka penetasan yang paling tinggi. Suhu substrat pada inkubasi bervariasi dari 28,87–33,30°C. Komposisi substrat sarang dominan pasir. Lahan semi alami semak yang mendukung untuk penetasan telur penyu hijau di kawasan Pantai Paloh.  ABSTRACT : Green Sea Turtle (Chelonia mydas) population is shrinking even been entered into the endangered animals and the narrowing nesting habitat due to damage to coastal vegetation allegedly of the causes of the decline of the green turtle population. Green turtle egg hatching success is determined by the environmental conditions and the position of the nest. This study aims to investigate the characteristics of the semi-natural nest. Samples nests have been evenly every land, this study uses three fields, namely open land, bushland, and land under the trees. The number of nests that are used as many as 13 nests. The percentage of green turtles hatching on the beach Paloh varied from 47,78% - 93,74%. 75% were successfully hatched from nests located in bushland. Shady nest showed the highest hatching. A substrate temperature of incubation time varies from 28.87 ° C - 33.30 ° C. The dominant nest is sand substrate composition. Semi-natural shrublands that support the green turtle eggs hatching in the Paloh Coast region.
Struktur Komunitas Makrozoobentos di Perairan Morosari, Kecamatan Sayung, Kabupaten Demak Sulistiyanto, Yuniar Andri; Endrawati, Hadi; Zainuri, Muhammad
977-2407769
Publisher : Departemen Ilmu Kelautan, Fakultas PerikanJurusan Ilmu Kelautan, Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (873.048 KB) | DOI: 10.14710/jmr.v1i2.2042

Abstract

Morosari estuary waters is consist of a pond area which flooded by high tide and became a shallow water area. Makrozoobentos is a biological component, which can be utilized to determine water quality. The purpose of this study is to determine the makrozoobentos community structure in the Morosari waters, Sayung District, Demak. There are 21 spesies of 4 classes, under 3 phyla Mollusca (13 species), consist of Polychaeta (8 species) and Crustacea (2 species), found in the 4 stations in the waters Morosari, District Sayung, Demak. The macrozoobentos abundance values on the entire sample ranged from 9 - 295 ind/m2. The diversity index show a range value from 0,00 – 3,28 (low to high category). The richness index show a range value between 0,00 – 0,94 (small to high category), while the dominance index indicates a range values between 0,18 – 1,00. The water quality show a variation that are still support makrozoobentos life.
KOMPOSISI DAN KELIMPAHAN PLANKTON DI PERAIRAN PULAU GUSUNG KEPULAUAN SELAYAR SULAWESI SELATAN Afif, Abdullah; Widianingsih, Widianingsih; Hartati, Retno
977-2407769
Publisher : Departemen Ilmu Kelautan, Fakultas PerikanJurusan Ilmu Kelautan, Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (266.046 KB) | DOI: 10.14710/jmr.v3i3.6004

Abstract

Plankton adalah penyusun dasar dalam ekosistem perairan. plankton dapat dibedakan menjadi fitoplankton dan zooplankton. Tujuan dari penelitian ini adalah untuk mengetahui komposisi, kelimpahan, indeks keanekaragaman, indeks keseragaman, indeks dominansi fitoplankton dan zooplankton di perairan Pulau Gusung, Kepulauan Selayar, Sulawesi Selatan. Metode yang digunakan adalah diskriptif eksploratif. Pengambilan sampel dilakukan pada 5 Oktober 2013 pada 5 stasiun yang merupakan kawasan penangkapan ikan karang. Sampel fitoplankton diambil secara pasif dengan menyaring air sebanyak 100 L. Sampel zooplankton diambil secara aktif dengan menyaring air secara horisontal dan di tarik perahu 100 m.Penelitian menunjukan fitoplankton ditemukan 2 kelas yaitu Bacillariophyceae (14 genus), dan Dinophycea (2 genus). Kelimpahan berkisar antara 42.000-92.000 sel/l (kelimpahan sedang) genus dengan kelimpahan tertinggi Rhizosolenia. Indeks keanekaragaman 1,539-1,761 (sedang), indeks keseragaman 0,773-0,889 (tinggi) dan indeks dominansi 0,111-0,227 (tidak ada dominansi). Zooplankton ditemukan 7 filum yaitu Arthopoda (15 genus dari 3 kelas), Cnidaria (1 genus dari 1 kelas), Chaetognata (1 genus dari 1 kelas), Protozoa (1 genus dari 1 kelas), Annelida (3 genus dari 1 kelas), Mollusca (4 genus dari 2 kelas), Chordata (1 kelas). Kelimpahan berkisar antara 2.240 - 4.880 ind/l (kesuburan sedang) genus dengan kelimpahan tertinggi Limacina. Indeks keanekaragaman 2,411-3,303 (sedang-tinggi), indeks keseragaman 0,740-0,908 (tinggi) dan indeks dominansi 0,092-0,260 (tidak ada dominansi).
Sebaran Ukuran Lebar Karapas Dan Berat Rajungan (Portunus pelagicus) Di Perairan Betahwalang Demak Anam, Aufa; Redjeki, Sri; Hartati, Retno
977-2407769
Publisher : Departemen Ilmu Kelautan, Fakultas PerikanJurusan Ilmu Kelautan, Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (841.087 KB) | DOI: 10.14710/jmr.v7i4.25922

Abstract

ABSTRAK : Rajungan (Portunidae) merupakan salah satu famili kepiting (Brachyura) Rajungan (Portunus pelagicus) merupakan komoditas perikanan yang bernilai ekonomis penting di Indonesia, karena berfungsi sebagai komoditas ekspor yang permintaannya dari tahun ke tahun semakin meningkat. Faktor harga komoditi yang tinggi dan pasar yang jelas tersebut mendorong peningkatan eksploitasi rajungan dari alam (wild catch) di wilayah perairan Pantai Utara Jawa. Perairan Betahwalang merupakan salah satu daerah penangkapan rajungan di Indonesia Tujuan dari penelitian ini adalah untuk mengetahui persebaran rajungan (Portunus pelagicus) di perairan Betahwalang serta mengetahui hubungan lebar dan berat rajungan di daerah perairan Betahwalang Penelitian ini dilaksanakan pada bulan September hingga Oktober 2016 di perairan Betahwalang, Demak. Pengumpulan data dilakukan dengan ikut melaut bersama nelayan rajungan Betahwalang. Pengambilan data penelitian meliputi data lebar dan panjang rajungan, serta data parameter lingkungan. Hasil analisa memperlihatkan bahwa pertumbuhan rajungan memiliki nilai b 2,518 yang menunjukkan sifat pertumbuhan allometrik negatif dengan sex rasio 1:1,4. Ukuran rajungan pertama kali tertangkap adalah 109 mm. Hasil penelitian memperlihatkan bahwa, 62,4% rajungan pada Zona 1 tidak termasuk kedalam Minimum Legal Size, sedangkan pada Zona 2, 90,5% rajungan tergolong kedalam Minimum Legal Size. ABSTRACT : Blue swimming crab (Portunidae) is one of the crab family (brachyura) and swimming crab (Portunus pelagicus) is an economic value commodity that is important in Indonesia, because it serves as an export commodity that the demand increased year to year. High commodity prices and the clear market crab encourage increased natural exploitation (wild catch) in the territorial waters of the North Coast of Java. Betahwalang waters is one small fishing crab area in Indonesia. The purpose of this study is to know the distribution of blue swimming crab (Portunus pelagicus) in the Betahwalang waters and to determine the relationship of the carapace width and weight of crab. This research was conducted from September to October 2016 in the Betahwalang waters, Demak. The data collection was done by contributing to the sea with the Betahwalang crab fishermen. Retrieval of research data includes width and length, as well as the data of the environmental parameters. Results of the analysis showed that the growth of crab, value b was 2.518 which exhibits a allometric negative growth with the sex ratio was 1: 1.4. First caught crab size was 109 mm. The results showed that, 62.4% of crab in zone 1 was not included into the Minimum Legal Size, whereas in zone 2, 90.5% rajungan classified into the Minimum Legal Size.
Produksi Bioetanol Dari Tepung Agar Gracilaria verrucosa (Hudson) Papenfuss yang Dihidrolisis Dengan Menggunakan Larutan Asam Sulfat Saputra, Wahid Agung; Susanto, AB; Pramesti, Rini
977-2407769
Publisher : Departemen Ilmu Kelautan, Fakultas PerikanJurusan Ilmu Kelautan, Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (170.485 KB) | DOI: 10.14710/jmr.v2i2.2346

Abstract

Fossil fuels are non-renewable fuels and overexploited. It has an impact on depletion oil reserves so needed renewable energy such as bio-ethanol. Bioethanol is alternative fuel made from biomass containing component sugars, starches, and cellulose. Agar is polysaccharide in cell wall seaweed Gracilaria verrucosa. Polysaccharides can be hydrolyzed with chemically or enzymatically into monosaccharides and then be fermented into bioethanol. The purpose of this study was to determine the potential of powder agar for bioethanol feedstock; optimum sulfuric acid to hydrolyze powder agar, and knowing optimum fermentation time on ethanol production. The study was conducted from February to June 2012 in Microbiology Laboratory, Research Center for Biology-LIPI, Cibinong. Powder agar is obtained from manufacturers in Malang. Yeast Saccharomyces cerevisiae is a collection of LIPI-MC. Reducing sugar content was analyzed by the method of Miller (1959), while concentration ethanol were analyzed by Gas Chromatography (GC). Method used in this study is an experimental laboratory for the hydrolysis and repeatable measurements for fermentation processes. Hydrolysis process using concentration H2SO4 of 0M, 0.1 M, 0.3 M, and 0.5 M. Fermentation using yeast S. cerevisiae with the incubation time 120 hours. Results showed powder agar can be used as raw material for bioethanol. Optimum reduction sugar 35.38 mg/ml ± 0.59 obtained in H2SO4 0.3 M. Ethanol Optimum 0.77%, obtained at 120 hours incubation.
Pengaruh Pengasapan Dengan Divine Cigarette Terhadap Laju Pertumbuhan Kepiting Bakau (Scylla serrata Forsskål, 1775) Suryanto, Adi; Djunaedi, Ali; Sunaryo, Sunaryo
977-2407769
Publisher : Departemen Ilmu Kelautan, Fakultas PerikanJurusan Ilmu Kelautan, Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (179.868 KB) | DOI: 10.14710/jmr.v3i4.11419

Abstract

Salah satu komoditas perikanan yang telah lama dirintis budidayanya adalah Kepiting Bakau (Scylla serrata Forsskål, 1775) (Sulaeman, 2005). Produksi Kepiting Bakau selama ini secara keseluruhan masih mengandalkan tangkapan dari alam, sehingga perlu dikembangkan kegiatan budidaya. Salah satu permasalahan yang ada di dalam kegiatan budidaya adalah  terhambatnya pertumbuhan Kepiting Bakau yang disebabkan oleh terganggunya proses metabolisme karena adanya kandungan zat radikal bebas (merkuri). Radikal bebas dapat dihilangkan dengan menggunakan Divine cigarette. Divine cigarette dapat menangkap radikal bebas. Tujuan dari penelitian ini adalah untuk mengetahui pengaruh pengasapan Divine cigarette pada pakan terhadap laju pertumbuhan Kepiting Bakau (S. serrata Forsskål, 1775). Penelitian ini menggunakan metode eksperimental dengan aspek yang diteliti adalah perbedaan pertumbuhan antara Kepiting yang diberi perlakuan pengasapan Divine cigarette pada pakan dan Kepiting yang tidak diberi perlakuan pengasapan Divine cigarette  pada pakan. Hasil penelitian menunjukkan adanya perbedaan yang nyata diantara kedua perlakuan (p < 0,05) pada pertumbuhan Kepiting Bakau (S. serrata Forsskål, 1775). Laju pertumbuhan spesifik (LPS) perlakuan A sebesar 0,77 + 0,06 % per hari dan perlakuan B sebesar 0,56 + 0,04 % per hari. Laju pertumbuhan spesifik Kepiting Bakau (S. serrata Forsskål, 1775) pada perlakuan A lebih tinggi, diduga akibat pengaruh pengasapan Divine cigarette pada pakan
STUDI POTENSI PANTAI SINDANGKERTA DI KABUPATEN TASIKMALAYA UNTUK PENGEMBANGAN WISATA BAHARI Suryani, Dietta; Pratikto, Ibnu; Koesoemadji, Koesoemadji
977-2407769
Publisher : Departemen Ilmu Kelautan, Fakultas PerikanJurusan Ilmu Kelautan, Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (160.317 KB) | DOI: 10.14710/jmr.v2i3.3140

Abstract

Sindangkerta Beach in Cipatujah is one of tourism object in South Tasikmalaya which has considerable potential as marine tourism area. The government doesn’t pay much attention makes this area couldn’t develop optimally. In addition, management data is very minimum. The study aims to indentify Sindangkerta Beach potential for marine tourism area. The research was held on February until March 2012. Those months is the last period of the rainy season in Indonesia but it wasn’t discourage the tourists to came to Sindangkerta Beach. The study used description analysis which is describes the real condition in the field and analysis of the suitability of tourism. This type analysis is compared the characteristics and quality of land to land use requirements for specific tourism activities. The result showed that Sindangkerta Beach has many unique things such as upraised coral area, culture attraction and has adequate facilities for supporting tourism activities, Based on the result of Indeks Kesesuaian Wisata (IKW), Sindangkerta Beach is very suitable (S1) for beach recreation. As for Taman Saut the value is 83.57%, for Taman Lengsar is 80% and 82.85% for Ketapang Beach which are the places result into S1 class or very suitable.
Pengaruh Perbedaan Kedalaman Terhadap Fitoplankton dan Zooplankton Di Perairan Pulau Panjang, Jepara Mulyawati, Deftika; Ario, Raden; Riniatsih, Ita
977-2407769
Publisher : Departemen Ilmu Kelautan, Fakultas PerikanJurusan Ilmu Kelautan, Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (713.477 KB) | DOI: 10.14710/jmr.v8i2.25101

Abstract

Plankton merupakan sebuah kelompok organisme yang hanyut bebas di dalam lautan. Plankton dapat dibagi menjadi dua golongan, yaitu fitoplankton dan zooplankton. Penelitian ini bertujuan untuk mengetahui hubungan dari kelimpahan fitoplankton dan zooplankton berdasarkan perbedaan kedalaman di perairan timur Pulau Panjang Kabupaten Jepara. Pengambilan sampel dilakukan dengan metode aktif yaitu dengan menarik plankton net dengan mata jaring ukuran 45µ untuk fitoplankton dan 150µ untuk zooplankton. Penarikan dilakukan menggunakan kapal selama 3-5 menit dengan kecepatan kapal 0,67 m/s pada lokasi penelitian. Penentuan stasiun penelitian berdasarkan pada perbedaan kedalaman. Kedalaman air laut yang digunakan pada saat pengambilan sampel ini adalah stasiun 1 dengan kedalaman 0 m atau permukaan air laut, stasiun 2 dengan kedalaman 1-2 m dari permukaan air laut, dan stasiun 3 dengan kedalaman 3-4 m dari permukaan air laut. Pengukuran kualitas perairan dilakukan secara in situ bersamaan dengan pengambilan sampel dilakukan. Hasil dari penelitian ini didapatkan komposisi fitoplankton sebanyak 13 genus dengan kelimpahan berkisar antara 3844,19-10869,80 individu/m3. Komposisi zooplankton di perairan didapatkan sebanyak 12 genus dengan kelimpahan berkisar antara 838,77-3250,24 individu/m3. Hubungan kelimpahan antara zooplankton dan fitoplankton di perairan ini termasuk kedalam golongan hubungan korelasi positif Plankton is a group that drifts freely in the ocean. Plankton has limited mobility. Plankton can be divided into two groups, namely phytoplankton and zooplankton. This study aims to determine the relationship of the abundance of phytoplankton and zooplankton based on rates in the east of Panjang Island, Jepara Regency. Sampling is done by the active method, namely by pulling the plankton net with a mesh size of 45µ for phytoplankton and 150µ for zooplankton. Withdrawals carried out by a ship for 3-5 minutes with a ship speed of 0.67 m/s at the study site. Determination of research stations based on differences in depth. The depth of sea water used during sampling is station 1 with a depth of 0 m or sea level, station 2 with a depth of 1-2 m from sea level, and station 3 with a depth of 3-4 m above sea level. Measurements of water quality were carried out in situ together with sampling. The results of this study obtained phytoplankton compositions as many as 13 genera with abundance ranging from 3844.19-10869.80 individuals/m3. The composition of zooplankton in the waters obtained as many as 12 genera with abundance ranging from 838.77-3250.24 individuals/m3. The relationship of abundance between zooplankton and phytoplankton in these waters is included in the group of positive correlation.
Sistem Budidaya Rumput Laut Gracilaria verrucosa di Pertambakan dengan Perbedaan Waktu Perendaman di Dalam Larutan NPK Rukmi, Ayuning Smita; Sunaryo, Sunaryo; Djunaedi, Ali
977-2407769
Publisher : Departemen Ilmu Kelautan, Fakultas PerikanJurusan Ilmu Kelautan, Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (92.243 KB) | DOI: 10.14710/jmr.v1i1.892

Abstract

Seaweed, Gracilaria verrucosa, is a plant that could be live in the brackishwater pond also requires nutrients in sufficient quantities and balanced in order to achieve optimal production. Therefore, fertilizer treatment on this commodity is very necessary for increasing production. This study was designed by Completely Randomized Design (CRD) with immersion period treatment the G. verrucosa of the NPK solution. The treatments, namely used: A. Control, B. 10 minutes, C. 20 minutes, D. 30 minutes, E. 40 minutes, F. 50 minutes, G. 60 minutes immersion. This study used N organic total (nitrite, nitrate and ammonium) that was obtained from NPK fertilizer with concentration of 0,6 mg/L. Planting was done by using longline method of 72 ties and was reared for 35 days. The results showed that there was significant effect of NPK immersion time on the growth rate of G. verrucosa (p<0,01). The highest average of specific growth rate of G. verrucosa in the treatment G, which was 2,13% per day and average of specific growth rate G. verrucosa lowest in treatment A, which was 1,67% per day.
Studi Akumulasi Logam Timbal (Pb) dan Efeknya Terhadap Kandungan Klorofil Daun Mangrove Rhizophora mucronata Aulia Dewi Puspita; Adi Santoso; Bambang Yulianto
Journal of Marine Research Vol 3, No 1 (2014) : Journal of Marine Research
Publisher : Departemen Ilmu Kelautan, Fakultas PerikanJurusan Ilmu Kelautan, Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (329.225 KB) | DOI: 10.14710/jmr.v3i1.4596

Abstract

Mangrove is a coastal plant which is vurneable to heavy metal pollution , whether from land or from the sea . More industrial development resulted in high levels of waste pollution .Various industrial waste into coastal waters will threat coastal vegetation like as mangrove. Rhizophora mucronata is one kind of mangrove with the highest population and is most often found around the coastal areas. Many industrial activities dischange lead (Pb), where Pb is one of the heavy metals that can not be degraded, can be accumulated in organism. This study aimed to know the accumulation of plumbum in mangrove the influence of difference concentration of Pb and exposure duration on chlorophyll content of R. mucronata mangrove leaves. The research was conducted in July-August 2012 at the Marine Science Campus , Faculty of Fisheries and Marine Science , Diponegoro University , Semarang. Mangrove saplings used was R. mucronata ± 8 months old . Mangrove test was placed on the test media with concentrations of 20 , 100 , and 500 ppm . Each treatment was triplicates and analysis for chlorophyll content was done every 10 days. The results of study can be concluded that the greater Pb concentration the longer the exposure time could decrease of chlorophyll content. But despite the amount of chlorophyll decreased, based on the calculation of the value of phytoremediation (FTD) R. mucronata still be potencial to reduce pollutant movement of Pb in soil/sediment/

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