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INDONESIA
BULETIN OSEANOGRAFI MARINA
Published by Universitas Diponegoro
ISSN : 20893507     EISSN : 25500015     DOI : -
Core Subject : Science,
Earth & Planetary Sciences
Buletin Oseanografi Marina (BULOMA) adalah jurnal yang menginformasikan hasil penelitian dan telaah pustaka tentang aspek Oseanografi, Ilmu Kelautan, Biologi Laut, Geologi Laut, Dinamika Laut dan Samudera, Estuari, Kajian Enerji Alternatif, Mitigasi Bencana, Sumberdaya Alam Pesisir, Laut dan Samudera.
Arjuna Subject : -
Articles 16 Documents
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Search results for , issue "Vol 12, No 3 (2023): Buletin Oseanografi Marina" : 16 Documents clear
Potensi Karbon Biru Pesisir Kalimantan Barat Ayunda Annisa Putri; Aji Ali Akbar; Romiyanto Romiyanto; Dian Rahayu Jati; Ochih Saziati
Buletin Oseanografi Marina Vol 12, No 3 (2023): Buletin Oseanografi Marina
Publisher : Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/buloma.v12i3.52009

Abstract

Potensi karbon biru (blue carbon) di pesisir Kalimantan Barat terdapat pada ekosistem mangrove, padang lamun, dan terumbu karang. Ketiga ekosistem ini tersebar di Kabupaten Sambas, Bengkayang, Mempawah, Kubu Raya, Ketapang dan Kota Singkawang. Penelitian ini bertujuan mengetahui luas dan keanekaragaman jenis ekosistem pesisir terkait dengan potensi karbon biru. Metode non-destruktif digunakan untuk mengkaji kemampuan ekosistem pesisir dalam menyerap karbon. Mangrove didominasi jenis didominasi oleh Rhizophora spp., Avicennia spp. Bruguiera spp., Sonneratia alba, Excoeacaria agallocha, dan Nypa fruticans. Padang lamun didominasi jenis Thalassia hemprichii dan Enhalus acoroides, sementara terumbu karang didominasi jenis Porites spp. dan Montipora spp. Estimasi serapan karbon terbesar berada di Kubu Raya sebesar 0,026 PgC (0,095 PgCO2e) dan yang terkecil berada di Kota Singkawang sebesar 0,000032 PgC (0,00012 PgCO2e). Penelitian ini mengungkap bahwa kemampuan serapan karbon berbanding lurus dengan luas ekosistem pesisir. Ekosistem mangrove merupakan ekosistem yang memiliki kemampuan dalam menyerap karbon, daripada ekosistem lamun dan terumbu karang. Upaya antropegenik memperparah degradasi ekosistem di pesisir Kalimantan Barat. The potency of blue carbon in the West Kalimantan is found in mangroves, seagrass beds, and coral reefs ecosystem. Sambas, Bengkayang, Mempawah, Kubu Raya, Ketapang, and Singkawang regencies coastal had a big potential blue carbon. This study aims to estimate the potential of blue carbon on coastal ecosystems diversity. This research was applying a non-destructive method to quantify the carbon sequestration of the ecosystems. Rhizophora spp., Avicennia spp, dominates mangrove, in Kalimantan Barat. Bruguiera spp., Sonneratia alba, Excoeacaria agallocha, dan Nypa fruticans, for mangroves, Thalassia hemprichii and Enhalus acoroides for seagrass and Porites spp. and Montipora spp, for coral reefs.  The most extensive estimated carbon sequestration is in Kubu Raya regency with 0.026 PgC (0.095 PgCO2e), and the smallest one is in the  Singkawang regency with 0.000032 PgC/ha (0.00012 PgCO2e/ha). Based on this research, it is observed that the ability of carbon sequestration is directly influenced by the coverage area of the coastal ecosystem, especially the mangrove forest which are dynamic due to anthropogenic activities.  
Artemia with Synbiotics Enrichment Improves Resistance Against Vibrio parahaemolyticus AHPND of Litopenaeus vannamei Larvae Ervia Yudiati; Zaenal Arifin; Adi Santoso; Jelita Rahma Hidayati; Rabia Alghazeer; Nuril Azhar
Buletin Oseanografi Marina Vol 12, No 3 (2023): Buletin Oseanografi Marina
Publisher : Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/buloma.v12i3.52523

Abstract

Shrimp, a high-protein food commodity, is one of the world's fastest-growing food-producing sectors. The present research aimed to find out the survival and growth of Litopenaues vannamei Post Larva (PL) and the resistance against VpAHND and stress salinity. 1500 PL were reared to two sets of experiments at the density of 50 PL. L-1. The first set is purposed to determine the PL growth, resistance to Vibrio paramaemolyticus AHPND challenge and stress salinity. The second set is purposed to determine the survival rate. A Completely randomized design (CRD) with five treatments and three replications was conducted. The treatments are Artemia enrichment with different Alginate doses and probiotics (400, 600, 800 ppm Alg+pro), probiotics (Pro), and control without any synbiotics addition. PL was reared in 14 days. The survival rate, and weight gain were calculated. At the end of the experiment, 10 PL was challenged against VpAHPND at 1 x 107 CFU mL-1by immersion methods. Twenty PL was exposed to stress salinity and shocked from 25 ppt to 0 ppt. The best survival rate ((78±2%), and tolerance to osmotic stress was reached at PL fed on a combination of alginate and FNCC-002 Lactobacillus bulgaricus probiotics (p<0.05). PL fed on Artemia enriched probiotics reached the highest resistance to severe VpAHNPD. The weight gain among treatments is similar. It can be concluded that synbiotics of alginate as prebiotics and FNCC-004 probiotics work synergically and this might be interrelated with immune response.  
Akumulasi Logam Pb dan Cu pada Akar, Daun dan Serasah Mangrove di Perairan Pekalongan Nirwani Soenardjo; Refinda Juliant Mentari
Buletin Oseanografi Marina Vol 12, No 3 (2023): Buletin Oseanografi Marina
Publisher : Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/buloma.v12i3.48984

Abstract

Pekalongan merupakan kota dengan kegiatan industri tekstil  cukup besar, terutama industri batik. Kegiatan industri ini menghasilkan limbah (salah satunya logam berat) diduga dapat mencemari lingkungan. Tembaga (Cu) dan Timbal (Pb) adalah logam berat yang   umum digunakan sebagai pewarna mordant dalam pewarnaan tekstil.  Mangrove Park di Kota Pekalongan sangat penting karena vegetasi mangrove mampu mengakumulasi logam berat.  Rhizophora mucronata digunakan sebagai fitoremediator karena dapat mengakumulasi logam berat. Tujuan penelitian ini menganalisis potensi R. mucronata sebagai agen fitoremediasi logam berat Pb dan Cu. Metode purposive sampling digunakan untuk pengambilan data dan sampel dianalisis dengan alat AAS (Atomic Absorption Spectophotometry). Hasil analisis Pb dan Cu ditemukan dalam sampel air, sedimen, daun, akar dan serasah mangrove. Konsentrasi  Pb lebih tinggi dibandingkan dengan Cu, bagian akar R.mucronata  konsentrasi Pb lebih tinggi (3,658 mg/kg). Berdasarkan  Nilai Bio Concentratiosn Factor (BCF) < 1  dan Translocation Factors (FC) < 1, maka R.mucronata adalah tumbuhan excluder yang mempunyai mekanisme Rhizofiltrasi.  Pekalongan city is widely known as a city with a fairly large-scale textile industry, especially batik industry. These industrial activities have produced wastes (one of them is heavy metal) that can pollute the environment.  Copper (Cu) and Lead (Pb) were a heavy metal commonly used as a dye mordant in textile dyeing. The existence of Mangrove Park in Pekalongan city has an important role due to mangrove vegetation ability to accumulate heavy metals. Rhizophora mucronata was fairly used as phytoremediator due to its ability to accumulate heavy metals. This research purpose was conducted to analyze the potential of R. mucronata as phytoremediator agent for heavy metals such as Pb and Cu. Purposive sampling method was used for data collection and samples were analyzed by AAS (Atomic Absorption Spectophotometry) method. The result of Pb and Cu analysis found in water samples, sediments, leaves, roots and mangrove litter. Pb concentration higher than Cu concentration, on R. mucronata roots were found that the Pb concentration as high as 3,658 mg/kg. Based on Bio Concentrations Factor (BCF) <1 and Translocation Factors (FC)<1, mangrove R. mucronata is an excluder plant that has a rhizofiltration mechanism.
Kajian Komposisi Ukuran Rajungan Betina (Portunus pelagicus) di Fishing Ground Perairan Pemalang Ria Azizah Tri Nuraini; Sri Redjeki; Hadi Endrawati; M. Amanun Tharieq
Buletin Oseanografi Marina Vol 12, No 3 (2023): Buletin Oseanografi Marina
Publisher : Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/buloma.v12i3.51276

Abstract

Rajungan betina memiliki peranan penting dalam keberlanjutan stok sumber daya rajungan di alam. Maraknya rajungan betina yang masih ditangkap oleh nelayan menjadi salah satu ancaman besar terhadap keberlanjutan sumber daya rajungan. Tujuan penelitian ini untuk mengetahui komposisi rajungan betina berdasarkan kelas lebar karapas, hubungan lebar karapas dan berat tubuh, komposisi tingkat kematangan gonad (TKG), nilai fekunditas dan persentase egg berried female (EBF) pada 20 titik area fishing ground yang dilaksanakan selama bulan Mei – Agustus 2022 di perairan Pemalang. Pengambilan sampel dan penentuan titik fishing ground dilakukan secara purposive sampling dengan menyesuaikan area penangkapan nelayan rajungan Desa Danasari, Pemalang. Distribusi ukuran lebar karapas rajungan menunjukkan modus kelas lebar karapas pada 101 – 110 mm, dimana kondisi tersebut tergolong kurang baik mengingat ukuran minimum rajungan yang boleh ditangkap adalah >100 mm. Hubungan lebar karapas dan berat tubuh menunjukkan pertumbuhan rajungan betina bersifat allometrik negatif, yang berarti pertambahan lebar karapas lebih cepat dibandingkan pertambahan berat tubuh. Komposisi TKG rajungan betina didominasi pada kondisi kematangan tingkat 2 (TKG 2) dengan persentase 78%. Nilai fekunditas rajungan betina bertelur dengan rata-rata pada kisaran 301.202±131.949 butir telur. Nilai EBF tertinggi ditemukan pada titik 12 dengan persentase 1,09% dengan rajungan betina bertelur sebanyak 7 ekor. Keberadaan rajungan betina di perairan menjadi salah satu faktor kunci keberlanjutan sumber daya rajungan, sehingga diharapkan dapat dijadikan acuan dalam penentuan area perlindungan dan kawasan potensial reproduksi rajungan di perairan Pemalang dan perairan lainnya. Female blue swimming crabs have an important role in the sustainability of crab populations of natural resources. The large number of female crabs that are still caught by fishermen is one of the major threats to the sustainability of crab resources. The purpose of this study was to determine the composition of female crab based on carapace width class, carapace width and body weight relationship, composition of gonad maturity level (TKG), fecundity value and percentage of egg berried female (EBF) at 20 spots of fishing ground area during May - August 2022 in Pemalang waters. Sampling and selection of fishing ground points were carried out by purposive sampling by adjusting the fishing area of crab fishermen in Danasari Village, Pemalang Regency. The distribution of carapace width size of crab showed the mode of carapace width class at 101 - 110 mm, where the condition is not quite good considering the minimum size of crab that can be caught is >100 mm. The relationship between carapace width and body weight shows that the growth of female crabs is negative allometric, which means that the increase in carapace width is faster than the increase in body weight. The TKG composition of female crabs is dominated by the condition of 2nd maturity level (TKG 2) with a percentage of 78%. The fecundity value of egg laying female crabs with an average in the range of 301,202±131,949 eggs. The highest EBF value was found at spot 12 with a percentage of 1,09%, with the number of egg berried female crabs are 7 individuals. The presence of female crabs in the waters is one of the key factors for the sustainability of crab resources, so it is expected to be used as a reference in determining protection and potential reproduction areas of blue swimming crabs in Pemalang waters and other waters.
Populasi Mangrove Rhizophora stylosa Griff. di Desa Kuala Langsa Kota Langsa: Distribusi Geografi, Struktur Demografi, Morfometrik Organ dan Karakteristik Penciri Morfometriknya Nur Safira; Erniati Erniati; Syahrial Syahrial; Fitra Wira Hadinata; Rika Anggraini; Nur Ikhsan; Risnita Tri Utami; Hendrik V. Ayhuan; Riri Ezraneti
Buletin Oseanografi Marina Vol 12, No 3 (2023): Buletin Oseanografi Marina
Publisher : Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/buloma.v12i3.52267

Abstract

Kajian terhadap populasi mangrove Rhizophora stylosa di Desa Kuala Langsa Kota Langsa dilakukan pada bulan November 2021 dengan tujuan untuk mengetahui distribusi geografi, struktur demografi, morfometrik organ dan karakteristik penciri morfometriknya. Data dikumpulkan dengan menarik transek kuadran berukuran 10 x 10 m yang tegak lurus garis pantai, dimana penentuan stasiun pengamatannnya berdasarkan purposive sampling. Organ daun, buah dan bunga diambil pada 5 tegakan pohon di masing-masing plot, kemudian diukur morfometriknya. Untuk struktur demografi, pengelompokkan umurnya dianalisis menurut metode Bhattacharya dan untuk penciri morfometriknya dianalisis berdasarkan statistik Principal Component Analysis (PCA). Hasil kajian memperlihatkan bahwa distribusi geografinya tergolong berlimpah (frekuensi relatif di atas 80%) dan pengelompokkan umurnya hanya terdiri dari satu kelompak dengan kisaran nilai tengah diameter batangnya antara 2,30–12,44 cm. Morfometrik diameter buah yang dominan ditemukan adalah 1,05–1,11 cm, panjang buah 26,46–27,77 cm, lebar kelopak bunga 0,38–0,41 cm, panjang kelopak bunga 0,98–1,04 cm, lebar daun 5,50–5,77 cm, panjang daun 11,60–12,11 cm dan diameter batang 5,41–7,00 cm. Selain itu, panjang buah, panjang kelopak bunga dan diameter batang merupakan morfometrik pencirinya dengan keragaman data 82,73%. In November 2021, a study was conducted on the Rhizophora stylosa mangrove population in Kuala Langsa Village, Langsa City, with the objective of determining the population's geographical distribution, demographic structure, morphometric organs, and morphometric characteristics. The data were collected by pulling a 10 x 10 m quadrant transect parallel to the shoreline, with the observation station determined through purposive sampling. Leaf, fruit, and flower organs were collected from five tree stands in each plot and then measured morphometrically. Battachraya method was used for the demograpic structure and Principal Component Analysis (PCA) was used to determine the morphological characteristics. The study's findings revealed a widespread geographic distribution (relative frequency greater than 80%) and a single age grouping with median stem diameters ranging from 2.30-12.44 cm. The dominant fruit diameter morphometrics were 1.05–1.11 cm, fruit length 26.46–27.77 cm, petal width 0.38–0.41 cm, petal length 0.98–1.04 cm, leaf width 5.50–5.77 cm, leaf length 11.60–12.11 cm, and diameter stem 5.41–7.00 cm. Furthermore, fruit length, flower petal length, and stem diameter are all morphometric characteristics with an 82.73% data diversity.  
Isolation and Morphological Characterization of Lead Tolerant Bacteria Associated with Perna viridis Yoshua Mario Sumbodo; Fiona Aqhila Dewi; Okti Hajeng Kristiadi; Annisa Nur Ayuningtyas; Heksa Raihan; Muhammad Zainuri; Hermin Pancasakti Kusumaningrum
Buletin Oseanografi Marina Vol 12, No 3 (2023): Buletin Oseanografi Marina
Publisher : Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/buloma.v12i3.59350

Abstract

Lead is a heavy metal contamination that is released into sea waters and cannot be decomposed so it accumulation and magnification along the food chain. Efforts to explore bacteria that have tolerance and have the potential to become lead reduction agents are a strategic step in remediating lead contamination. One mechanism for lead bioremediation by bioaccumulation is to utilize metallothionein protein which can potentially be obtained from isolates of green mussel associated bacteria. Bacterial isolates associated with green mussels were obtained by isolating the bacteria and testing the tolerance of the bacterial isolates using Luria Bertani media which was added with Pb(NO3)2 at a concentration of 100 ppm and its multiples to determine their tolerance to lead. The bacterial isolates obtained were characterized based on colony and cell morphology. The results of the lead resistance test carried out showed that 11 bacterial isolates were obtained and 3 bacterial isolates had tolerance to lead with a lead concentration of 400 ppm. Bacterial isolates that are tolerant to lead show changes in cell morphology to reduce the impact of exposure to lead which has a lethal effect, because the resulting decrease in cell surface area can reduce lead absorption.

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