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OLDI (Oseanologi dan Limnologi di Indonesia)

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Published by Lembaga Ilmu Pengetahuan Indonesia

ISSN : 01259830 EISSN : 2477328X DOI : -

Core Subject : Science, Social,

Biochemistry, Genetics & Molecular Biology Earth & Planetary Sciences Environmental Science

Oseanologi dan Limnologi di Indonesia is a scientific journal that publishes original research articles and reviews about all aspects of oceanography and limnology. Manuscripts that can be submitted to Oseanologi dan Limnologi di Indonesia is the result of research in marine and inland waters in Indonesia. Submissions are judged on their originality and intellectual contribution to the fields of oceanography and limnology

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Articles 6 Documents

Search results for , issue "Vol 4, No 2 (2019)" : 6 Documents clear

Produktivitas Primer Perairan Kolong Bekas Tambang Bauksit di Kota Tanjungpinang, Kepulauan Riau Apriadi, Tri; Putra, Risandi Dwirama; Idris, Fadhliyah
OLDI (Oseanologi dan Limnologi di Indonesia) Vol 4, No 2 (2019)
Publisher : Indonesian Institute of Sciences

Primary Productivity on Abandoned Bauxite Mining Pits of Tanjungpinang City, Riau Islands. The abandoned bauxite mining pits in Bintan Island have a good opportunity to be developed, especially as an aquaculture area. The objective of this study was to determine the primary productivity of the waters, phytoplankton ecological index, and physical and chemical parameters of the bauxite post-mining ponds in Tanjungpinang City, Riau Islands. The study was conducted in April-August 2018 in two bauxite post-mining ponds (station 1 and 2) in Senggarang, Tanjungpinang City. The parameters observed were the abundance and ecological index of phytoplankton, aquatic primary productivity, physical and chemical parameters of the waters, and nutrients, N and P. From the study it was found that there were three phytoplankton divisions, consisted of three classes and eight genera. Mougeotia sp. was the dominant species of phytoplankton. The abandoned bauxite mining pits were classified as labile and the phytoplankton communities were under environmental stress due to the dominance of certain species. The abandoned bauxite mining pits were classified as young (inundation <5 years), low primary productivity, as well as oligotrophic waters. Net primary productivity in station 2 was higher than station 1, i.e. 1,23 mgC L-1 day-1 and 0,25 mgC L-1 day-1, respectively. The physical and chemical parameters of the bauxite post-mining ponds studied met the quality standards for freshwater aquaculture activities, except for pH and ammonia.

Estimasi Stok Karbon pada Biomassa Lamun di Pulau Semak Daun, Kepulauan Seribu Gunawan, Jessica Viny; Parengkuan, Maxi; Wahyudi, A'an Johan; Zulpikar, Firman
OLDI (Oseanologi dan Limnologi di Indonesia) Vol 4, No 2 (2019)
Publisher : Indonesian Institute of Sciences

Ekosistem lamun memiliki peran penting dalam pertahanan ekosistem pesisir. Ekosistem lamun juga dapat menyerap karbon dan menyimpannya sebagai materi organik dalam waktu lama. Namun, aktivitas antropogenik di daerah pesisir memberikan tekanan lingkungan kepada ekosistem lamun. Penelitian ini dilakukan untuk mengkaji stok karbon biomassa lamun di Pulau Semak Daun untuk menilai potensi ekosistem padang lamun di area ini dalam penyerapan karbon. Pengamatan dilakukan di ekosistem lamun untuk mendapatkan nilai kerapatan, frekuensi kemunculan, kualitas air serta aktivitas antropogenik di sekitar ekosistem lamun. Pengambilan sampel dilakukan untuk mendapatkan data biomassa dan stok karbon lamun. Stok karbon dihitung dengan metode pengabuan, kemudian dikombinasikan dengan nilai kerapatan untuk mengetahui potensi stok karbon pada keseluruhan area padang lamun. Spesies lamun yang ditemukan di perairan Pulau Semak Daun adalah Halophila ovalis, Thalassia hemprichii, Cymodocea rotundata, Syringodium isoetifolium, dan Halodule uninervis. Luas ekosistem lamun Pulau Semak Daun sebesar 9,1 ha dengan nilai stok karbonnya sebesar 1,84 ton C atau setara dengan 6,76 ton CO2. Stok karbon sebesar 52% berasal dari biomassa lamun bagian bawah substrat dan 48% dari biomassa lamun bagian atas substrat.Kata kunci: lamun, stok karbon, biomassa, Semak Daun, Kepulauan Seribu ABSTRACT Carbon Stock Estimation in Seagrass Biomass on Semak Daun Island, Thousand Islands. Seagrass ecosystem has a vital role in protecting the coastal ecosystem. It can also sequester and store carbon as an organic material (blue carbon) for a long time. However, anthropogenic activities in coastal areas give environmental stress on the seagrass ecosystem. This research was conducted to assess the carbon stock of seagrass biomass in Semak Daun Island in order to evaluate the potential of the seagrass meadows in sequestering carbon. Sampling and observation were held in the seagrass ecosystem to obtain seagrass density, biomass, frequency of occurrence, water quality, and anthropogenic activity. Carbon stock was calculated by the loss of ignition (LOI) method, and combined with density to determine the total carbon stock in the whole area of seagrass meadows. Seagrass species in Semak Daun Island consist of Halophila ovalis, Thalassia hemprichii, Cymodocea rotundata, Syringodium isoetifolium, and Halodule uninervis. The coverage area of seagrass in Semak Daun Island was 9.1 ha with carbon stock value of 1.84 ton C or equivalent to 6.76 ton CO2. Fifty two percent of the carbon stock was originated from the below-ground biomass and 48% from the above-ground biomass. Keywords: seagrass, carbon stock, biomass, Semak Daun, Thousand Island

Pengukuran Total Petroleum Hidrokarbon (TPH) Melalui Pendekatan Kadar Minyak-Lemak dalam Sedimen di Perairan Delta Cimanuk, Jawa Barat Wulandari, Ita; Yogaswara, Deny; Khozanah, Khozanah; Edward, Edward; Rositasari, Ricky; Falahudin, Dede
OLDI (Oseanologi dan Limnologi di Indonesia) Vol 4, No 2 (2019)
Publisher : Indonesian Institute of Sciences

Determination of Total Petroleum Hidrokarbon (TPH) through the Concentration of Oil and Grease (OG) in the Surface Sediment of Cimanuk Delta Waters, West Java. The Estuary of Delta Cimanuk is located in the coastal water of Indramayu, West Java. The pollution in the Cimanuk Delta was originated from households and industrial waste on coastal dan upland areas. Coupled with the traffic activities of fishing vessels at the fish landing (PPI) and fishing port (PP) bases around the waters, oil and grease contamination would be a threat as pollution in Indramayu coastal area. The major source of OG component on coastal waters was animal and vegetal fat and total petroleum hydrocarbon (TPH). The objectives of the study are to estimate the concentration and spatial distribution of TPH in the sediments of the Cimanuk watershed based on OG levels, and identifying the distribution of TPH-contaminated areas. Fourier Transform Infrared Spectroscopy (FTIR) instrument was applied to determine OG compounds in the sediment samples. The results showed that OG concentrations in sediments were varied between <1 to 138.104 mg kg-1 dry weight (dw), while TPH was estimated at 0.24 ? 36.60 mg kg-1 dw. The highest concentrations of OG was observed on St-10 in the northeast coast. Compared to the threshold value of sediments quality guidelines according to ANZECC (OG: 280-550 mg kg-1 dw), the TPH levels in eighteen observation stations were within normal range. The increased pollutant intake in Cimanuk watershed will threat the estuary as well as its biodiversity.

Color Alteration and Growth Performance of Spiny Lobster (Panulirus homarus) Juveniles Fed with Different Spirulina Concentration in Formulated Diet Soffa, Fawzan Bhakti; Pratama, Idham Sumarto; Ridwanudin, Asep; Fahmi, Varian
OLDI (Oseanologi dan Limnologi di Indonesia) Vol 4, No 2 (2019)
Publisher : Indonesian Institute of Sciences

Perubahan Warna dan Performa Pertumbuhan Juvenil Lobster Pasir (Panulirus homarus) yang diberi Pakan Buatan dengan Konsentrasi Spirulina Berbeda. Lobster pasir Panulirus homarus yang dibudidayakan rentan mengalami perubahan warna menjadi lebih pucat, sehingga dapat memengaruhi tingkat penerimaan konsumen terhadap produk tersebut di pasaran. Spirulina merupakan salah satu sumber karotenoid yang dibutuhkan lobster dalam proses pigmentasi, pertumbuhan dan kelangsungan hidup. Tujuan dari penelitian ini adalah untuk mengetahui pengaruh penambahan Spirulina dalam pakan buatan terhadap perubahan warna tubuh dan performa pertumbuhan pada juvenile lobster pasir. Penelitian dilakukan di Laboratorium Budidaya Balai Bio Industri Laut-LIPI, Lombok Utara, Nusa Tenggara Barat. Perlakuan penambahan tepung Spirulina dengan konsentrasi berbeda (0%, 4% dan 8%) pada pakan buatan dilakukan sebanyak tiga ulangan, sedangkan perlakuan pakan rucah sebagai kontrol dilakukan tanpa ulangan. Setiap biota uji ditimbang dan difoto untuk dapat diamati tingkat pertumbuhannya serta perubahan warna yang terjadi di enam bagian tubuhnya menggunakan metode kuantifikasi warna HSV (hue, saturation, value).Setelah 97 hari pemeliharaan, warna seluruh bagian tubuh lobster mengalami perubahan menjadi lebih cerah dibandingkan warna awal juvenil. Jika dibandingkan dengan perlakuan ikan rucah, perlakuan pakan dengan tambahan Spirulina berhasil meningkatkan rasio kelulushidupan namun tidak memengaruhi laju pertumbuhan spesifik serta pertambahan berat tubuh biota uji. Meskipun penambahan Spirulina tidak memberikan pengaruh yang signifikan terhadap pigmentasi dan pertumbuhan, penggunaan pakan buatan dalam budidaya lobster pasir memiliki potensi yang besar dalam mencegah perubahan warna dan mengurangi tingkat kematian selama pemeliharaan.

Konsumsi Oksigen Ikan Uceng Nemacheilus fasciatus (Valenciennes, 1846) pada Kondisi Padat Tebar yang Berbeda Iswantari, Aliati; Kurniawan, Kurniawan; Priadi, Bambang; Prakoso, Vitas Atmadi; Kristanto, Anang Hari
OLDI (Oseanologi dan Limnologi di Indonesia) Vol 4, No 2 (2019)
Publisher : Indonesian Institute of Sciences

Oxygen Consumption of Barred Loach Nemacheilus fasciatus (Valenciennes, 1846) under Different Stocking Densities. In aquaculture system, fish growth is affected by stocking densities. One way to predict the effect of stocking density on growth is to determine fish metabolic rate through oxygen consumption measurements. In Barred loach Nemacheilus fasciatus (Valenciennes, 1846), the information was scarce on oxygen consumption. This study was to analyze the effect of stocking density on oxygen consumption in Barred loach conducted at Research Institute for Freshwater Aquaculture and Fisheries Extension, Bogor in May 2018. Barred loach (total length: 5.79 ± 0.47 cm, weight: 1.32 ± 0.34 g) was observed its oxygen consumption on three different stocking densities (5, 10, and 15 fish/L) by using closed respirometers (volume: 1.4 L) with three replications of each treatment. Measurement of oxygen consumption was carried out under normoxia and hypoxia conditions. In addition, fish behavior and ventilation rate were also observed and recorded according to treatment. The results showed that the highest oxygen consumption of barred loach was found in the stocking density of 5 fish/L (1250.6 ± 128.4 mg O2/kg/h) which was significantly different from the stocking density of 10 fish/L (626.9 ± 46.7 mg O2/kg/h) and 15 fish/L (596.9 ± 48.9 mg O2/kg/h). Meanwhile, oxygen consumption of barred loach under hypoxic conditions decreased significantly compared to normoxic conditions, which was marked by a decrease in their swimming activities. Although the ventilation rate in hypoxic conditions has decreased, the value was not significantly different from those of normoxia condition. Results of this study provide information that an increase in stocking density and hypoxic conditions in barred loach caused a decrease in oxygen consumption rates. In addition, this study showed that the critical oxygen level for barred loach was around 3.1 mg/L

Isolasi dan Identifikasi Bakteri Toleran Logam Berat dari Sedimen Mangrove di Pengudang dan Tanjung Uban, Pulau Bintan, Indonesia de Fretes, Charlie Ester; Sutiknowati, Lies Indah; Falahudin, Dede
OLDI (Oseanologi dan Limnologi di Indonesia) Vol 4, No 2 (2019)
Publisher : Indonesian Institute of Sciences

Isolation and Identification of Heavy Metals Tolerant Bacteria from Mangrove Sediment in Pengudang and Tanjung Uban, Bintan Island, Indonesia. Bacterial searches for remediation of heavy metal pollutants continue to be carried out due to the increasing pollution in the ecosystem as a result of industrialization. This research aims to identification bacteria strains that are tolerant of heavy metals from mangrove sediments in the Pengudang and Tanjung Uban, Bintan Island in 2018. Bacterial isolation was carried out by pour plate method and purified using marine agar (MA) medium. Screening of bacterial isolates was carried out by growing isolates on MA medium with the addition of 100 ppm Pb. In addition, the determination of minimum inhibitory concentration (MIC) was performed on the isolates were tolerant to Pb, Cu, and Cd by addition of heavy metals in 50-1000 ppm concentrations. Identification of heavy metal tolerant isolates was carried out by sequencing the 16S rRNA gene. The results of bacterial isolation from mangrove sediments obtained 48 isolates used for testing the ability of heavy metals tolerant. Screening tests showed that PGD1A, PGD5A, PGD22A, PGD1B, PGD9B, PGD5C, PGD6C, TJU1, TJU5, and TJU7 isolates were heavy metal resistant. The results showed that bacterial isolated from mangrove sediments had MIC values of 800-900 ppm for Pb, 100-800 ppm for Cu and 100-200 ppm for Cd. There are 3 isolates that have high resistance to three kinds of heavy metals such as Bacillus oceanisediminis PGD1A, Vibrio alginolyticus PGD5A, and Halobacillus kuroshimensis PGD9B. This indicates that the isolate can be used efficiently for removal of heavy metals from the ecosystem.

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Maruatal Sitompul

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Home Page

OAI Link

Editorial Team

Contact

Reviewer

Google Scholar

Contact Name Maruatal Sitompul

Contact Email m.sitompoel@gmail.com

Phone -

Journal Mail Official redaksi.oldi@gmail.com

Editorial Address -

Location Kota adm. jakarta selatan, Dki jakarta INDONESIA

Abstract

Abstract

Abstract

Abstract

Abstract

Abstract

Contact Name
Maruatal Sitompul

Contact Email
m.sitompoel@gmail.com

Phone
-

Journal Mail Official
redaksi.oldi@gmail.com

Editorial Address
-

Location
Kota adm. jakarta selatan,

Dki jakarta

INDONESIA