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OSEANA
Published by Lembaga Ilmu Pengetahuan Indonesia
ISSN : 02161877     EISSN : 27147185     DOI : -
Core Subject : Science, Education, Social,
Biochemistry, Genetics & Molecular Biology Environmental Science Other
OSEANA adalah jurnal elektronik nasional yang menerbitkan artikel ilmiah yang bersumber dari penelitian maupun artikel penelaahan pustaka dalam bidang oseanografi di Indonesia. Tujuan dari penerbitan OSEANA adalah untuk memberikan informasi kepada masyarakat yang berminat terhadap bidang oseanologi yang meliputi kegiatan, perkembangan, serta hasil-hasil yang telah dicapai oleh Pemerintah Indonesia khususnya di bidang kelautan. Penerbitan jurnal ini dikelola oleh Pusat Penelitian Oseanografi LIPI dan diterbitkan dua kali setahun di bulan April dan Oktober. Redaksi menerima sumbangan karya yang behubungan dengan ilmu kelautan (oseanografi biologi, oseanografi fisika, oseanografi kimia, oseanografi geologi, dan bidang-bidang terkait lainnya) yang bersifat ilmiah. Redaksi juga menerima tulisan dari ahli/penulis dari luar Pusat Penelitian Oseanografi LIPI.
Arjuna Subject : Ilmu Bumi dan Planet (semua kategori) - Oseanografi
Articles 7 Documents
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Search results for , issue "Vol 45 No 1 (2020)" : 7 Documents clear
TEKNIK-TEKNIK REMEDIASI SEDIMEN TERKONTAMINASI LOGAM BERAT Harmesa Harmesa
OSEANA Vol 45 No 1 (2020)
Publisher : Pusat Penelitian Oseanografi LIPI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14203/oseana.2020.Vol.45No.1.50

Abstract

Sediments are important in influencing changes and movements of the heavy metals in the aquatic environment. Heavy metals contamination of the sediments has negative ecological impacts on the environment. Therefore, economical, effective, and environmentally friendly remediation processes are needed. Purposes of the remediation are to reduce toxicity, bioavailability, and mobility of the metals from the polluted sediments. The remediations are developed using physical-chemical, biological and combination of both techniques. Physical-chemical techniques are carried out to decrease the stability of contaminated substances. Biological techniques or known as bioremediation are conducted through biological processes of plants, animals, and microorganisms. While the combination of both respective techniques, can produce maximum benefits and increase remediation efficiency.
TERIPANG SEBAGAI SALAH SATU SUMBER KOLAGEN Bayu Kumayanjati
OSEANA Vol 45 No 1 (2020)
Publisher : Pusat Penelitian Oseanografi LIPI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14203/oseana.2020.Vol.45No.1.51

Abstract

Sea cucumbers are one of the Echinoderms that are rich in nutrients. Sea cucumbers contain a lot of minerals, unsaturated fatty acids, amino acids, and quite high protein. Protein content in sea cucumbers can reach 40% depending on the type and habitat of the sea cucumber. High protein content in sea cucumbers has the potential as a source of collagen. Collagen is a constituent protein found in the skin, tendons, cartilage and hard bones, and other tissues. Collagen currently has been widely applied in various industrial fields, such as cosmetics, health, pharmacy and food, so that the requirement for collagen will increase. Collagen currently is still dominated by collagen from cattle and pigs. Collagen from cattle is the most widely used in Indonesia because the halal collagen is important in Indonesia. The requirement for halal collagen will certainly be limited if it only relies on collagen from cattle. Therefore, alternative sources of collagen are needed, one of them is sea cucumbers.
DISTRIBUSI DAN SIKLUS NUTRIENT DI PERAIRAN ESTUARI SERTA PENGENDALIANNYA Deny Yogaswara
OSEANA Vol 45 No 1 (2020)
Publisher : Pusat Penelitian Oseanografi LIPI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14203/oseana.2020.Vol.45No.1.52

Abstract

Nutrient components (consist of nitrogen and phosphorus) are needed for healthy ecosystems and they are naturally widespread throughout the aquatic and terrestrial environment. Nutrient loading as a result of anthropogenic activities comes from rivers that flow into the estuary. The abundance and the cycles of nutrients in the estuary are affected by physical factors (i.e. hydrodynamic conditions such as currents and tides, turbidity and waves), biological factors (i.e. filter feeder organism) and chemical factors (i.e. material fixation and decomposition). To supporting estuarine food webs, phytoplankton and primary productivity are fundamental importance. Besides, they are also key drivers of biogeochemical cycling and play a central role in determining water quality. But on the contrary, within the same conditions, it has negative impact on the estuary environment. The negative impact of high primary productivity in the estuary can cause an algae bloom. Algae bloom occurs when abundant nutrients and optimum sunlight intensity, with the lowest current at the same time. Algae bloom has a negative impact on estuary ecosystems because it makes depleting of dissolved oxygen, with the mass death of marine biota such as fish as a consequence. Therefore, the amount of nutrients from anthropogenic activities have to be controlled and monitored before they flow to the river. The method to control the waste is treated in a Waste Water Treatment Plant (WWTP) system. This treatment by using the WWTP system could reduce the concentration of nutrients spread in the estuary and it will prevent the occurrence of algae bloom phenomena.
POTENSI LOGAM OKSIDA SEBAGAI FOTOKATALIS DEGRADASI PLASTIK DI AIR LAUT Muhammad Safaat
OSEANA Vol 45 No 1 (2020)
Publisher : Pusat Penelitian Oseanografi LIPI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14203/oseana.2020.Vol.45No.1.54

Abstract

Microplastics have been found in Indonesian seas from surface to sediments with varying amounts, sizes and shapes. Microplastics in surface and sediments can negatively affect biota. Microplastic can stick to the surface and enter the marine biota through direct consumption, inhalation, and trophic transfer. A number of approaches have been proposed to deal with the plastic debris. This includes combustion, thermal degradation, biodegradation and photocatalysis. A nanostructure photocatalyst can be an environmentally friendly way to fix the problem of plastic debris. Metals can catalyze dissociation of hydroperoxides and increase oxidative cutting of polyolefins. In this review, we want to assess the feasibility of metal oxides as photocatalysts for plastic degradation, especially in seawater. Metal oxides can catalyze plastic degradation and form several compounds along the chain, such as hydroxyl (alcohol), peroxide, carbonyl groups, esters, and low molecular weight molecules. In general, metal oxide modification can increase the effectiveness of the plastic degradation photocatalytic process.
STRUKTUR KOMUNITAS, PERANAN DAN ADAPTASI MAKROALGA DI INTERTIDAL BERBATU Tri Handayani
OSEANA Vol 45 No 1 (2020)
Publisher : Pusat Penelitian Oseanografi LIPI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14203/oseana.2020.Vol.45No.1.56

Abstract

Rocky shore intertidal occurs at the interface of the land and sea, which regularly exposed with tidal waves. In general, rocky shore intertidal is influenced by extreme physical factors, so organisms need to adapt well. Macroalgae on rocky shore intertidal are mostly macroalgae that have epilithic life foam, for example, Sargassum, Turbinaria, Hypnea, Gracilaria, Amphiroa, Chaetomorpha, Ulva, Acanthophora, and Gelidium. The role of macroalgae on rocky shore intertidal are as a primary producer/primary productivity, food for other organisms (fish, mollusc, sea urchin, crab), nursery ground for other organisms (fish, sea urchin, sea cucumber, and crab), and provide shelter for benthic fauna (crabs, sea urchin, molluscs, polychaeta and sea star). The adaptation of macroalgae on rocky shore intertidal was through morphological changes. Gracilaria salicornia on rocky shore intertidal has slimmer thallus than G. salicornia on non-rocky shore intertidal.
KARAKTERISTIK BIOLOGI KUDA LAUT (Hippocampus spp) SEBAGAI PENGETAHUAN DASAR BUDIDAYANYA Dwi Eny Djoko Setyono
OSEANA Vol 45 No 1 (2020)
Publisher : Pusat Penelitian Oseanografi LIPI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14203/oseana.2020.Vol.45No.1.57

Abstract

Many species of marine organisms live in Indonesian waters have a potential for aquaculture (fishes, crustaceans, mollusc, echinoderm, and algae). They are cultured for food resources, the basis for cosmetic and natural medicine, and also as ornamental fish for marine aquarium. Seahorse (Syngnathidae: Hippocampus) is a marine fish which has high ecological and economic value. Fishing pressure of wild seahorse increased significantly when buyers offering an attractive price for the catch. High levels of fishing effort keep the wild stocks of seahorses well below the level that could be supported by natural growth and recruitment. Aquaculture for seahorses is very important to support sustainable production and to maintain the wild population in steady condition. Culture technique for seahorses has been developed in some countries, including Indonesia. However, seahorse aquaculture in Indonesia has not been achieved as expected due to the limited understanding of some biological characteristics. This manuscript deliberates some biological characteristics that useful as basic knowledge for seahorse aquaculture.
ANCAMAN HIPOKSIA BAGI EKOSISTEM PESISIR; PENGGUNAAN INDEKS AMMONIA-ELPHIDIUM (A-E) SEBAGAI PROKSI Ricky Rositasari
OSEANA Vol 45 No 1 (2020)
Publisher : Pusat Penelitian Oseanografi LIPI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14203/oseana.2020.Vol.45No.1.88

Abstract

Hypoxia is one of the aquatic phenomena caused by natural and/or anthropogenic factors. Eutrophication is the main trigger of hypoxia in coastal waters throughout the hemisphere. Hypoxia that occurs in aquatic ecosystems refers to the low concentration of dissolved oxygen in the water column to less than 2 mg/L. Hypoxia causes a double effect, low oxygen supply for biotic physiological process, and triggers ocean acidification. Prolonged hypoxic conditions will have a significant impact on the food webs in coastal waters and sea waters, further conditions will ultimately have an impact on capture-based fishing activities. The case of hypoxia in Indonesian coastal waters has not been widely revealed and has not been a concern to be understood or traced to its existence. Retrospective as well as actual traces of hypoxia were revealed, especially in the waters of Jakarta Bay. The retrospective study was carried out using proxies that have been used in various tropical and subtropical countries, the Ammonia-Elphidium (A-E) index (Foraminifera). The results show that several places in the coastal waters of Jakarta Bay and Semarang have experienced episodic hypoxic events for several centuries. A brief review of phenomenal hypoxic events in other parts of the world and preliminary information on recorded events in several Indonesian coastal waters are expected to open stakeholder awareness about further threats of hypoxia in Indonesian waters.

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