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Marine Research in Indonesia
MARINE RESEARCH IN INDONESIA (MRI) has been published since 1956 by Indonesia's oldest marine research institute, the Research Center for Oceanography of LIPI (Indonesian Institute of Sciences). MRI focuses on physical, chemical, biological, geological oceanographic as well as coastal management studies in the Indonesian seas and the adjacent Indo-Pacific region.
Articles
273
Articles
SEAGRASS POPULATION CONNECTIVITY IN THE SOUTH CHINA SEA

Hernawan, Udhi Eko

Marine Research in Indonesia Vol 43, No 2 (2018)
Publisher : Research Center for Oceanography - Indonesian Institute of Sciences (LIPI)

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Abstract

Seagrass plays important ecological roles and ecosystem services, yet degrading alarmingly in the South China Sea (SCS), one of the largest marginal seas of the Western Pacific. As connectivity is a vital component in population persistence, understanding of connectivity is of importance for effective seagrass conservation management. In the South China Sea, our understanding of connectivity is mainly based on studies in fishes and invertebrates. Connectivity in seagrass populations, on the other hand, is still poorly investigated. In this review, I predict that genetically structured population of seagrass is likely to occur in the SCS. Future research on seagrass connectivity should include (i) investigation on the pattern of connectivity at a local and broader-regional scale, and (ii) investigation on processes involved in the seagrass connectivity. These investigations are aimed to improve our knowledge of seagrass connectivity and to contribute in providing a solid framework for seagrass restoration/transplantation and spatial planning of seagrass management.

SPATIAL VARIATION IN POPULATION CHARACTERISTICS OF VENUS CLAM GAFRARIUM TUMIDUM RÖDING, 1798 (BIVALVIA: VENERIDAE) IN AMBON BAY, MALUKU

Islami, Muhammad Masrur, Bengen, Dietriech Geoffrey, Dody, Safar

Marine Research in Indonesia Vol 43, No 2 (2018)
Publisher : Research Center for Oceanography - Indonesian Institute of Sciences (LIPI)

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Abstract

Ambon Bay consists of two regions i.e. Inner and Outer Ambon Bay that was separated by Galala-Poka sill. Consequently these waters have different local environmental conditions that leads to the bivalve populations differences, one of them is venus clam Gafrarium tumidum. In this study, the distribution and spatial variation in population characteristics of of venus clam was quantified based on the analysis of their twelve shell dimensions from different populations. Fieldwork and analyses were conducted on April – Juni 2013. Total of 585 individuals of venus clam were found and could be divided into ten size-classes and three size categories i.e. small (< 23.11 mm), medium (23.12–32.05 mm) and large size (> 32.06 mm). The highest size-class density was found at medium size. Spatial distribution was related to the characteristics of sediment and other potential factors. Result of discriminant analysis showed that shell-width (SW) was the variable with the highest discriminating power and distinguishing between Inner and Outer Ambon Bay populations.

MANGROVE BRACHYURAN CRABS IN WORI, NORTH SULAWESI, INDONESIA

Pratiwi, Rianta, Widyastuti, Ernawati

Marine Research in Indonesia Vol 43, No 2 (2018)
Publisher : Research Center for Oceanography - Indonesian Institute of Sciences (LIPI)

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Abstract

The study for faunal diversity from mangrove sites in Wori were very less work carried out, especially on brachyuran crab taxa. Healthy mangrove forests provide  a critical for many species of Crabs in intertidal and estuarine areas are keys to healthy marine ecology. Mangroves are the most suitable feeding, breeding and nursery grounds for crabs and other crustaceans. In this study, the habitat distribution and diversity of crabs in Wori mangrove environment was recorded from  October 2015 and August 2016. In view of the significance of the mangrove habitat, in present study we selected three station with different habitat specifications as in  Wori Seaward (WSW), Wori Middle zone (WMZ) and Wori Landward (WLW). Total 15 species and 307 individuals of brachyuran crabs were recorded belonging to 10 genera and 6 families. Crabs belonging to family Sesarmidae was most dominant with 7 species. The other major outcome of study was maximum diversity was found at Wori Landward (WLW) site with 13 species, followed by Middle Zone (WMZ) site with 11 species and Wori Seaward (WSW) site with 10 species. Keywords: Brachyuran crabs, mangroves, mud flats, estuary, Wori, Bitung, North Sulawesi Indonesia

CHEMICAL COMPOSITIONS OF TWO BROWN SEAWEED SPECIES FROM KARIMUN JAWA, INDONESIA

Siahaan, Evi Amelia, Asaduzzaman, A.K.M., Pangestuti, Ratih

Marine Research in Indonesia Vol 43, No 2 (2018)
Publisher : Research Center for Oceanography - Indonesian Institute of Sciences (LIPI)

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Abstract

Seaweeds are potentials to be developed as alternative source in foods and pharmaceuticals. In this study, chemical compositions of two brown seaweeds species from Karimun Java Indonesia Padina australis and Turbinaria conoides were investigated. Proximate results showed that both seaweeds contain high amount of carbohydrates and ashes. Mineral contents of P. australis and T. conoides follow the orders of Na>Mg>Fe>K>Ca>Zn>Cu and Na>Mg>K>Fe>Zn>Ca>Cu, respectively. Almost all essential amino acids (including histidine, isoleucine, leucine, phenylalanine, threonine, valine and lysine) were present in both seaweeds. Amino acid profiles showed that both seaweed contain polyunsaturated fatty acids (PUFA) with T. conoides contain higher amount of EPA (8.58 ± 0.22 g/100 g of total fatty acids) and DHA (6.05 ± 0.21 g/100 g of total fatty acids). The findings of this study have provided evidence that brown seaweeds were nutritious and potential to be utilized for producing functional ingredients in food. Further, P. australis and T. conoides can be used as candidate to be used in food industries to increase shelf-life of food items for human consumption, and use to deter deleterious free radical-induced life-threatening diseases.

TIDAL REGIMS OF ARAFURA AND TIMOR SEA

Pranowo, Widodo S., Wirasantosa, Sugiarta

Marine Research in Indonesia Vol 36, No 1 (2011)
Publisher : Research Center for Oceanography - Indonesian Institute of Sciences (LIPI)

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Abstract

Tidal range in the Arafura and Teimor Sea region is estimated from the actual field records collected by five tidal stations during March 2011. These stations include Rote and Saumlaki tidal stations of Badan Koordinasi Survei dan Pemetaan Nasional (Bakosurtanal) Indonesia, and Broome, Darwin and Groote Eylandt tidal stations of Australia Bureau of Meteorology (BoM). In addition to data from these stations, datasets of sea surface height obtained from Topex/Poseidon altimetry at seven (7) virtual stations were used. Generally, the results of this study are in agreement with that of Wyrtki (1961). However, by utilizing spectral analysis and form factor, this study shows difference in terms of tidal types from that of Wyrtkis, particularly at Karumba and Groote Eylandt stations.

EARTH SYSTEM PROCESSES OF THE WALLACEA AND THEIR IMPLICATIONS TO THE INDONESIAN THROUGHFLOW AND BIOGEOGRAPHY

Sopaheluwakan, Jan

Marine Research in Indonesia Vol 36, No 1 (2011)
Publisher : Research Center for Oceanography - Indonesian Institute of Sciences (LIPI)

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Abstract

The Wallacea with the total land area of 347,000 km designates a biogeographical group of Eastern Indonesian islands separated by deep water straits from the Asian and Australian continental shelves, and occupies a region with the worlds most complex geological evolution and the accompanying extreme endemism. It also encloses remnants of emerged and submerged lands as well as dispersed and accreted island arcs and fragments of the continents resulting from a relatively continuous Cenozoic convergence of the Indo-Australian, Eurasia and Pacific-Philippine Sea plates. This paper discusses the Cenozoic spatial and temporal evolution of terranes in the region and explores how the Earth System Processes have eventually shaped up the Indonesian Throughflow and highlights the biogeographically unique and rich Wallacea. It will be demonstrated that the Wallaces line may have inherited an evolved multi-origin Early Cenozoic deep water barrier and the present Wallacea has been the resultant of significant Neogene convergent tectonics and significant modification by glacially-related sea level and climatic changes during the Quaternary. The gradual and systematic changes of the respective ocean regimes, the corresponding oceanometeorologic evolution, the emergence and disappearance of islands and land bridges, the dispersal and docking of some terranes have all resulted in the present configuration of the areas of endemism within the Wallacea. These changes correspond with the Neogene closure of the Indonesian Seaways, a narrow passage formed by the collision of the three major plates and the vanished pre-Cenozoic Tethyan ocean formed by the otherwise connected Indian and Pacific Oceans.

SPIDER CRABS OF THE GENERA PARATYMOLUS MIERS, 1879 AND LITOSUS LOH & NG, 1999 FROM LOMBOK ISLAND, INDONESIA (CRUSTACEA, DECAPODA, BRACHYURA, MAJOIDEA, INACHIDAE)

Rahayu, Dwi Listyo

Marine Research in Indonesia Vol 36, No 1 (2011)
Publisher : Research Center for Oceanography - Indonesian Institute of Sciences (LIPI)

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Abstract

A small collection of majoid spider crabs of the genus Paratymolus Miers, 1879, s.l from Lombok Island, Indonesia contains four species namely P. hastatus Alcock (1895), P. coccus Loh & Ng (1999), P. cygnus Loh & Ng (1999), and Litosus sexspinosus (Miers, 1884). Except for L. spinosus, the three other species are new records for Indonesia. Paratymolus coccus is previously known from only female specimens, and the presence of male specimens in the collection studied provides the opportunity to complete the description of male characters. Paratymolus hastatus is reported for the first time outside Indian Ocean and P. cygnus is recorded for the first time after its description.

FIRST RECORD ON ODONTANTHIAS FLAGRIS YOSHINO AND ARAGA, 1975 (PERCIFORMES: SERRANIDAE) IN INDONESIAN WATERS

Peristiwady, Teguh

Marine Research in Indonesia Vol 36, No 1 (2011)
Publisher : Research Center for Oceanography - Indonesian Institute of Sciences (LIPI)

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Abstract

Two specimens of Odontanthias flagris have been caught from Bitung, North Sulawesi in June 2010. Previously, nown locations of this species are Okinawa and Nishino-shima, Japan. O. flagris is very similar with O. rhodopeplus. They shares following characters: dorsal fin rays X, 13; anal fin rays III, 7; pectorals fin rays 17-18; scales above lateral line 7; scales below lateral line 19 and gill rakers on lower limb 28. Characters differing O. flagris from O. rhodopeplus, O. chrysostictus and other six species appear in the percentage of orbit diameter. In addition, O. flagris has shorter pelvic fin rays but longer caudal peduncle and third dorsal fin spine. Its morphological features, distribution, remarks and photo of species are given in this paper.

ABUNDANCE AND DIVERSITY OF ZOOPLANKTON IN LEMBEH STRAIT, BITUNG, INDONESIA

Rumengan, Inneke F.M., Akerina, J., Rampengan, M. M.F., Masengi, K. W.A.

Marine Research in Indonesia Vol 36, No 1 (2011)
Publisher : Research Center for Oceanography - Indonesian Institute of Sciences (LIPI)

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Abstract

This study examined the diversity and abundance of zooplankton in Lembeh Strait, North Sulawesi. Plankton were sampled monthly from September 2004 to February 2005, collected at four stations using a plankton net of 300 pm meshsize with vertical tow of 10 m water column from the bottom. Environmental factors i.e pH, salinity, current velocity, and dissolved oxygen (DO) were measured in situ at the time of plankton sampling. In general, the environmental conditions of Lembeh Strait were in optimal range for zooplankton. There was a similar pattern in the abundance of zooplankton among stations. Crustacea (mainly Copepoda) was the dominant genera among stations, followed by Ciliata and Tunicata. In all stations, the most abundance taxa (72.3%) was Crustacea (21 genera), mainly copepod (18 genera). There were 7 other classes of holoplankton: Ciliata (2 genera), Rhisopoda (1 genus), Hidrozoa (1 genus), Polychaeta (2 genera), Sagitoedea (1 genus) and Tunicata (2 genera). Meroplankton (larva) were only represented by 5 genera. The most common genera were calanoid copepods, such as Calanus spp., Undinula spp., Eucalanus spp., Rhincalanus spp., Paracalanus spp., and Acartia spp. Diversity, evenness and dominance indices showed that Serena Island, a relatively uncontaminated area, was more productive than the other three stations which were considered as relatively contaminated area with anthrophogenic sources.

REPRODUCTION AND LARVAL REARING OF SANDFISH (Holothuria scabra)

Sembiring, Sari Budi Moria, Wibawa, Gigih Setia, Giri, I Nyoman Adiasmara, Hutapea, Jhon Harianto, Haryanti, -

Marine Research in Indonesia Vol 43, No 1 (2018)
Publisher : Research Center for Oceanography - Indonesian Institute of Sciences (LIPI)

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Abstract

The natural stock of sea cucumber Holothuria scabra (known as sandfish) has been declining in both population and size, making it difficult to collect broodstock and juvenile sandfishes for aquaculture. This research aims to evaluate the reproduction of domesticated broodstock (F-1) and performance of the juveniles (F-2). Broodstock were reared in two rectangular concrete tanks with a dimension of 190 x 290 x 70 cm3. There were 12 individuals (7 males and 5 females) of broodstock (F-1) with total length and mean body weight of 12.0 ± 1.21 cm and 122.6 ± 32.37 g, respectively. Six broodstock were put in each tank and fed with compressed benthos at 4% biomass daily in the afternoon. During our experiment, domesticated sandfish broodstock successfully spawned twice. The first spawning (occurred in January 2017) had one female spawned that released 1,350,000 eggs with a hatching rate of 57.4%. Another broodstock spawned in April 2017 and produced 3,280,000 eggs with a hatching rate of 78.66%. The growth performance of 170 days-old juveniles (F-2) shows a total length of 5.66 ± 0.90 cm and a mean body weight of 10.08 ± 2.07 g. The survival rates are 5.19% and 8.68% for juveniles spawned in January and April, respectively. We conclude by showing that sandfish could be domesticated to produce seeds for further aquaculture development.