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Marine Research in Indonesia

MRI
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Published by Lembaga Ilmu Pengetahuan Indonesia

ISSN : 02162873 EISSN : 24432008 DOI : -

Core Subject : Science,

Earth & Planetary Sciences

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.

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Articles 567 Documents

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THE DISTRIBUTION OF BENTHIC FORAMINIFERA IN DAMAR ISLAND AND JUKUNG ISLAND, SERIBU ISLANDS Natsir, Suhartati M.
Marine Research in Indonesia Vol 35 No 2 (2010)
Publisher : Research Center for Oceanography - Indonesian Institute of Sciences (LIPI)

Seribu Islands are archipelago within Jakarta Bay built upon the pleistocene coral formation of the Sunda Shelf. The islands are characterized by unique and high biodiversity such as coral reefs. Since coral reef degradation would lead to a decrease of human prosperity, the determination of the coral reef quality is of high importance. Foraminifera offers an early warning system for the coral reef condition, as exemplified by the FORAM Index, i.e. Foraminifera in Reef Assessment and Monitoring Index. This study compared the foraminiferal community structure and the FORAM Index of two islands between the Damar Besar and Jukung. Both islands were dominated by symbiont-bearing foraminifera of the genera Amphistegina, Calcarina, Heterostegina, Marginophora, and Operculina. However, the number of benthic foraminifers at Jukung Island was higher than that at Damar Besar Island, having 17 individuals per species on average. Jukung Island was a conducive site to reef growth, as indicated by a FORAM Index (between 6,48 and 6,57), and Damar Besar Island was liable to environmental change.

EVALUATION OF COREMAP PHASE 2 IN THE EASTERN INDONESIA BASED ON THE CHANGES IN CORAL COVERAGE Giyanto, .
Marine Research in Indonesia Vol 42 No 1 (2017)
Publisher : Research Center for Oceanography - Indonesian Institute of Sciences (LIPI)

COREMAP (Coral Reef Rehabilitation and Management Program) is a long-term program initiated by the Government of Indonesia to enhance the welfare of the coastal communities by protecting, rehabilitating, and achieving sustainable use of the Indonesian coral reefs and their associated ecosystems. COREMAP is three phases planned program. The first phase was launched in 1998 and finished in 2004. Phase 2 began in 2006 and ended in 2011. The last phase has started since the end of 2014 and will finish in 2019. One of the performance indicators of COREMAP phase 2 (COREMAP 2) was a significant improvement of live coral cover in 80% of all sampling sites. The aims of this study are to find out and evaluate the trend of live coral cover during COREMAP 2. Annual monitoring of coral reefs was conducted in all sites of COREMAP 2 in the eastern Indonesia. Those sites were: Pangkep, Selayar, Buton, Wakatobi, Sikka, Biak Numfor and Raja Ampat. Permanent transects were applied at each site. Life-form of benthic data including hard corals was collected using the Line Intercept Transect (LIT) method and surveyed using SCUBA diving equipment. The result indicates that all sites, except Biak Numfor, demonstrate improvement in live coral cover during COREMAP 2. In contrast, live coral cover in Biak Numfor shows a decline due primarily to storm damage, destruction by bombs, some bleaching, and predation by Acanthaster planci. An increase in live coral covers in six out of seven sites during COREMAP 2indicates that the activities of COREMAP 2 (e.g. public awareness, community-based MCS, alternative livelihood) has a positive impact on the management of coral reefs in the Eastern of Indonesia.

REMOTE ESTIMATION OF TOTAL SUSPENDED SOLID (TSS) TRANSPORT AFFECTED BY TIDAL BORE “BONO” OF KAMPAR BIG RIVER ESTUARY USING LANDSAT 8 OLI IMAGERY Wisha, Ulung Jantama; Dhiauddin, Ruzana; Kusumah, Gunardi
Marine Research in Indonesia Vol 42 No 1 (2017)
Publisher : Research Center for Oceanography - Indonesian Institute of Sciences (LIPI)

The Kampar River estuary has a unique tidal bore, namely Bono. A tidal bore is a natural phenomenon caused by the tidal flow which meet the flow of the river. Tidal bore "Bono" has an impact on the transport of suspended particles which is pretty much along the Kampar River. The purpose of this study is to determine the estimated concentration of total suspended solid in the river as the result of the transport by Bono in Kampar River estuary by Landsat 8 OLI. The primary data are Landsat 8 OLI sensor – on Path 126 and Row 60, recording date was on 23 -04-2016, which was analyzed spatially – and TSS in situ. The secondary data are tide forecasting data and topographical map of Indonesia. Distribution of total suspended solid indicates sediment transport and its distribution by TSS values ranged between 10-150 mg.L-1 and TSS in situ value ranged between 42-241 mg.L-1. Tidal range ranged from 0.78 to 4.2 m and current velocity ranged from 0-0.9 m.s-1, which generate tidal bore extending from the mouth to the river body, resulting in suspended particle transport along the river. TSS concentration is higher in the river estuary.

ORGANIC MATTER AND NUTRIENT PROFILE OF THE TWO-CURRENT-REGULATED-ZONE IN THE SOUTHWESTERN SUMATRAN WATERS (SSW) Wahyudi, A'an Johan; Iskandar, Mochamad R.; Meirinawati, Hanny; Afdal, .; Vimono, Indra B.; Afianti, Nur F.; Sianturi, Oksto R.; Wirawati, Ismiliana; Darmayati, Yeti; Helfinalis, .; Sidabutar, Tumpak
Marine Research in Indonesia Vol 42 No 1 (2017)
Publisher : Research Center for Oceanography - Indonesian Institute of Sciences (LIPI)

The Indian Ocean is influenced by monsoon systems which alter the ocean’s physical and chemical properties. Specifically, the southwestern Sumatran waters in the eastern Indian Ocean are considered a dual current regulated zone i.e. affected by South Equatorial Counter Current (SECC) and South Java Current (SJC). This area is considered as having an important role in the transfer of organic matter or the biological pump. However, the information about this area is minimal, especially in terms of organic matter and nutrient profile. This study will update the recent information about the area, including the profile of particulate organic matter (POM), macro-nutrients, total suspended solids (TSS), macromolecule-degradingbacteria, and soft bottom macrobenthic organisms sampled from 26 stations in both the SECC-regulated zone and the SJC-regulated zone. The physical profile is typical of tropical watersand both zones have a distinct profile of organic matter and nutrients. The particulate organic carbon (POC), particulate organic nitrogen (PON), and TSS of the SECC-regulated zone can be considered higher than those of the SJC-regulated zone. This region is categorized as mesotrophic waters, especially from the surface up to 100 m. The production of nutrients and organic matter in the water column in this area contribute significantly to the abundance of heterotrophic bacteria and benthic organisms.

CONTRIBUTION OF FISH CONSUMPTION TO CADMIUM AND LEAD INTAKES IN COASTAL COMMUNITIES OF WEST KALIMANTAN, INDONESIA Arifin, Zainal; Falahudin, Dede
Marine Research in Indonesia Vol 42 No 1 (2017)
Publisher : Research Center for Oceanography - Indonesian Institute of Sciences (LIPI)

Consumption of both marine and freshwater fishes is considered as a healthy way to obtain diet, but the ingestion of contaminated fishes remains a concern. Our study is conducted to asses cadmium (Cd) and lead (Pb) contents in various fishes consumed by coastal communities in six districts of West Kalimantan (Indonesia) and their health risks to the communities. Specifically, the objectives of this study are to determine the average weekly intakes (AWIs) of cadmium and lead based on dietary intake of fishes, then estimate health risk associated with fish consumption using the risk quotients (RQs) method. We also use food frequency questionnaires (FFQ) filled by 696 respondents to assess fish consumption habit of the communities in West Kalimantan who consumed up to 30 fish species in 2012 and 2013. Our results show that their average weekly fish consumption is 135.7 ± 66.3 g/week, which contributes to AWI values of 0.38 ± 0.55 ?g/kg body weight (bw) per week for Cd and 0.87 ± 0.65 ?g/kg bw per week for Pb. The RQ values indicate a low risk of Pb coming from fish consumption, but the RQ value for Cd is high for the children age group. In conclusion, fish consumption in the six districts of coastal communities in West Kalimantan generally does not pose any health risk from Pb. Conversely, Cd intake from fish consumption has a potential risk for children. As such, regular monitoring and additional studies are needed on potential contribution of Cd intake from other food sources.

SURVIVAL RATE AND GROWTH OF JUVENILE SANDFISH (Holothuria scabra) IN VARIOUS REARING CONDITIONS Indriana, Lisa Fajar; Firdaus, Muhammad; Supono, .; Munandar, Hendra
Marine Research in Indonesia Vol 42 No 1 (2017)
Publisher : Research Center for Oceanography - Indonesian Institute of Sciences (LIPI)

Techniques for producing Holothuria scabra or sandfish sea cucumbers from aquaculture have been developed rapidly in the recent years to address the issues of decreasing sandfish population and increasing market demand. During the process of culturing H. scabra, the early stages of sandfish (i.e. larvae and juveniles) are the most critical of the development. Therefore, the Research and Development Division of the Marine Bio Industry – LIPI conducted a study to assess the growth performance of juvenile H. scabra ultured in four different rearing conditions: (i) indoor concrete tank, (ii) indoor fiberglass tank, (iii) outdoor concrete tank with 1 mm hapa mesh, and (iv) outdoor concrete tank with 3 mm hapa mesh. Each of the rearing condition was set with an initial juvenile density of 15 juveniles per tank with a mean initial weight of 14 g, and fed ad libitum with a mixed feed consisting of Enhalus acoroides sea grass, Pennisetum purpureum napier and cow manure. The experiments were conducted for 20 weeks between April 26 - September 23, 2013. After the experimental period, juveniles reared in the outdoor concrete tank with 1 mm mesh show the best performance with respect to their survival rate (48.89 ± 3.85 %),mean final weight (22.07 ± 1.01 g), final biomass (162.05 ± 18.17 g) and specific growth rate (0.15 ± 0.03% per day). Further studies that combine rearing conditions with different bottom substrates as well as investigating the effect of light are needed to optimize the production of H. scabra from aquaculture.

SITE SUITABILITY ANALYSIS FOR COMMUNITY-BASED TROPICAL SEA CUCUMBER HOLOTHURIA SCABRA GROW-OUT IN NORTH SULAWESI WATERS Rizqi, Marenda Pandu; Supono, -
Marine Research in Indonesia Vol 44 No 1 (2019)
Publisher : Research Center for Oceanography - Indonesian Institute of Sciences (LIPI)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14203/mri.v44i1.301

North Sulawesi, a region that has experienced a decreasing population of commercial sea cucumbers in Indonesia, has recently been designated an aquaculture development area. Recent developments of sea cucumber Holothuria scabra hatchery technology have successfully enabled the small-scale enterprise to produce hatchery-reared sandfish for restocking purposes. However, the grow-out phase requires considerable resources including ex-situ grow-out sites, labor, and distribution. This study aims to investigate the suitability of some potential grow-out sites for juvenile H. scabra in North Sulawesi waters. Three traditional sea cucumber fishing grounds in coastal areas of North Minahasa regency in North Sulawesi, i.e., Tanjung Merah, Tasikoki and Makalisung, were examined to determine their suitability as a grow-out site. Several criteria encompassing bioecological (native sea cucumber population, seagrass bed population, competitor/predator), environmental (substrate, protection to weather, water quality, tidal cycle), and technical/support (access, safety, labor) were assessed in each site. Site suitability analysis using a multi-criteria decision-making tool, Analytical Hierarchy Process (AHP), shows that Tasikoki has the highest suitability score (48.94%) followed by Tanjung Merah (27.18%) and Makalisung (23.88%). Tasikoki scores higher than the two other sites in 7 out of 11 sub-criteria, including native sandfish population, seagrass species, substrate, weather protection, safety, and community support. Our finding suggests that Tasikoki is bioecologically, environmentally, and technically the best potential site to be developed for H. scabra juvenile grow-out.

TRANSPLANTING ENHALUS ACOROIDES (L.F) ROYLE WITH DIFFERENT LENGTH RHIZOME ON THE MUDDY SUBSTRATE AND HIGH WATER DYNAMIC AT BANTEN BAY, INDONESIA Kiswara, Wawan; Kumoro, Erlangga Dwi; Kawaroe, Mujizat; Rahadian, Nana P.
Marine Research in Indonesia Vol 35 No 2 (2010)
Publisher : Research Center for Oceanography - Indonesian Institute of Sciences (LIPI)

This study is a part of transplanting Enhalus acoroides carried out from November 2006 to February 2007 as a compensation of 1.6 ha loss of seagrass beds at Bojonegara, which was facilitated by NGO Rekonvasi Bhumi and funded by oil drilling company, PT Apexindo. The transplanting site was located at Terate, Banten Bay which has muddy substrate with high water dynamic. Healthy transplant seedlings were collected from monospecific vegetation with muddy substrate of donor site at Kepuh. The seedlings of Enhalus have different length of rhizome, 5 and 10 cm, with leaf length of 60 cm and removed roots. Transplanting of Enhalus acoroides was conducted using single shoot seedlings with 9 seedlings per unit in 1 meter square with 5 replicates. Light coefficient (1.17-5.06) and percentage of silt and clay (86.45 ± 2.18 %) at transplant site Terate were both higher than the donor site Kepuh with light coefficient values of 1.21-2.46 and percentage of silt and clay 64.00 ± 5.57 %, respectively. Seedling growth survival of Enhalus acoroides in February 2007 with rhizome length of 10 cm was higher (51.11 ± 25.58%) than seedlings with rhizome length of 5 cm (17.78 ± 18.59%). Leaf length and wide Enhalus acoroides transplants decreased during the study. Water dynamic (waves) influenced light coefficient and turbidity at the transplant site. Field observations showed that mortality of Enhalus acoroides transplants was caused by mud smoothering the leaves and barnacle growing on them. They made the leaves lost their buoyancy, laid on the surface, rotten and finally died. Wave is one of the important physical factor affecting the transplanting seagrass on the muddy substrate.

ONGROWING TECHNIQUES FOR JUVENILE DONKEY EAR ABALONE (HALIOTIS ASINIA) AT PEMENANG WATERS, NORTH LOMBOK, INDONESIA Setyono, Dwi Eny Djoko; Aswandy, Indra
Marine Research in Indonesia Vol 35 No 2 (2010)
Publisher : Research Center for Oceanography - Indonesian Institute of Sciences (LIPI)

Abalone is one of the most prized sea delicacies in the world. In Indonesia, although donkey ear abalone (Haliotis asinina) forms a valuable fishery, little is known about its culture techniques. A study has been conducted to find out the most suitable technique for ongrowing donkey ear abalone, for to the local farmer in Indonesia. Juveniles used in study were collected from the southern Lombok coastal waters. They were reared in different type of structure (CNC = circular net cage and TNC = tyre net cage) and set at different depths. Juveniles were fed ad-libitum by macroalgae, Gracilaria spp. Results of the study showed that juveniles of donkey ear abalone have a better growth when cultured offshore in a TNC than in CNC. To gain a better growth, juveniles abalone need to be reared in cages which provided more shelter and less light. Donkey ear abalone was considered a hardy species, survival rate was not influenced by the type of structure (CNC or TNC) and setting position (depths).

EIGHTEEN SEA CUCUMBER SPECIES FISHED IN KARIMUNJAWA ISLANDS, JAVA SEA Purwati, Pradina; Hartati, Retno; Widianingsih, -
Marine Research in Indonesia Vol 35 No 2 (2010)
Publisher : Research Center for Oceanography - Indonesian Institute of Sciences (LIPI)

Indonesia has been supplying the highest diversity of dried sea cucumbers (trepang) to world markets for decades even though species validation on the trepang from any producing areas throughout the country is still needed. Karimunjawa (Islands off north coast of Java) is one of trepang habitats. Several visits from May to November 2009 had been made to collect trepang from the fishers and collectors in that area. Eighteen aspidochirote species were identified, more varied than those reported in 1988 and 1992 although 7 species have no longer been found. Three species among those: Actinopyga banwarthi, Bohadschia subrubra, and Holothuria fuscocinerea have never been reported in Indonesia before, neither on the list of commercial sea cucumbers in Asia nor world trade provided by Choo (2008) and Toral-Grande (2007). These species composition shifts may indicate a threat to species diversity, starting with excessive removal of natural stock. Up to now, 28 species of trepang have been recognized from Karimunjawa waters.

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Aan J. Wahyudi

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aanj001@lipi.go.id

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Journal Mail Official
mri@mail.lipi.go.id

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Location
Kota adm. jakarta selatan,

Dki jakarta

INDONESIA