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Ditemukan 6 dokumen yang sesuai dengan query
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Siringoringo, Rikoh Manogar
Abstrak :
ABSTRACT
Bangka Island is well known as the world's largest tin producer. The inland and offshore tin mining has profound effects on the coastal environment, resulting in the high sedimentation in the water. Many corals suffered physiological damage due to low light intensity. The distribution of stony corals and the status of coral reefs was surveyed at 6 sites in West Bangka waters in October 2012. A total of 72 species of corals belonging to 33 genera and 12 families were found, and 4 species were distributed at all research sites. The live coral coverage was 36% on average and was categorized as being in fair condition. The coverage was 0% at Kamboja Island where the corals were the most affected by tin mining. The sediment flowed out from tin mining, blocked the light, and settled on the coral's surface. Consequently, many corals were buried and the live corals decreased. It is obviously necessary to reduce and control the tin mining.
Jakarta: LIPI Press, 2014
550 MRI 39:2 (2014)
Artikel Jurnal  Universitas Indonesia Library
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Arif Seno Adji
Abstrak :
ABSTRACT
Providing accurate information on suitable multispectral satellite sensors for mapping coral reefs in Indonesia is a challenge for coastal remote-sensing experts. As coral reefs vary in spatial extent, shape, length, perimeter and/ or distance to shore, the mapping of coral reefs will need different satellite sensors depending on the objectives and the kind of information required. This work compares the suitability of two kinds of multispectral satellite sensors for mapping coral reefs in Indonesia, high and moderate spatial resolution. This was done through a case study of Wakatobi Marine National Park since that represents many types of coral reef in Indonesia (fringing, barrier, atoll, and patch). Indonesian coral reef shapefile data 2010 was downloaded from UNEP (United Nations Environment Programme) website, and Landsat 7 ETM + images, path/row 112/064 was used to determine the terrestrial area of Wakatobi Islands. Both high and moderate spatial resolution sensors are suitable for mapping the benthic communities and geomorphic zones on coral reefs. The former are more accurate but they are also much less cost-effective, especially over large areas.
Jakarta: LIPI Press, 2014
550 MRI 39:2 (2014)
Artikel Jurnal  Universitas Indonesia Library
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Teguh Peristiwady
Abstrak :
Three specimens of Plectranthias retrofasciatus Fourmanoir and Randall, 1979 and one specimen of P. randalli Fourmanoir and Rivaton, 1980 were collected by first author from fish market, Bitung, North Sulawesi on June and September 2010. The specimens were deposited at LBRC-F, the reference collection of LIPI Bitung, Technical Implementation Unit for Marine Biota Conservation, Research Centre for Oceanography, Indonesian Institute of Sciences, Bitung, Indonesia. Plectranthias retrofasciatus is closely related to P. megalophthalmus and P. knappi, in sharing some morphological characters as snout length and interorbital width, while P. randalli differs to other species by having a moderate deep body proportion. Initially these species known only from New Caledonia for P. retrofasciatus and Chesterfield Islands and southern Taiwan for P. randalli respectively. The two species of anthiine fishes collected from Bitung, Indonesia bringing the total number of species of this genus known in Indonesia to six.
Jakarta: LIPI Press, 2014
550 MRI 39:2 (2014)
Artikel Jurnal  Universitas Indonesia Library
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Abstrak :
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 oppurtunity 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.
Jakarta : LIPI Press,
550 MRI
Majalah, Jurnal, Buletin  Universitas Indonesia Library
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Supono
Abstrak :
ABSTRACT
Indonesia is particularly rich in Echinoderms and North Sulawesi lies at the geographic centre of this biodiverse marine realm. While further studies on Sulawesi Echinodermata are required in order to obtain full understanding of current biodiversity status, preliminary SCUBA and intertidal surveys in early 2012 in the vicinity of the Lembeh Island, a region little explored previously, recorded a total of 76 species of 4 classes (Asteroidea, Ophiuroidea, Echinoidea and Holothuroidea) from shallow waters (0-40 m) at 36 sites (sea grass, coral rubble and reef). The class Crinoidea is not reported here. A review of Echinoderm literature for North Sulawesi noted that there are 114 species belonging to 5 classes of Echinodermata.
Jakarta: LIPI Press, 2014
550 MRI 39:2 (2014)
Artikel Jurnal  Universitas Indonesia Library
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Yustian Rovi Alfiansah
Abstrak :
ABSTRACT
Several harbours in North Jakarta have been polluted by spills of oil and their derivates. We suggest that diverse species of crude oil and polycyclic aromatic hydrocarbon-degrading bacteria inhabit these harbours. An experiment was undertaken in 2007 to isolate crude oil and polycyclic aromatic hydrocarbon (PAH)-degrading bacteria from oil-polluted harbours, such as Muara Baru, Sunda Kelapa and Tanjung Priok. Sea water and sediment samples were collected twice, in March and April. Crude oil and PAH-degrading bacteria were isolated from enrichment culture of samples in an enrichment medium (SWP), using ONR7a medium with the addition of 5 types of PAH gases or Arabian Light Crude Oil 210 (ALCO 210) onto medium. This study reported that fluoranthene and crude oil-degrading bacteria were the major bacteria isolated from the three polluted harbours. In total, 109 isolates have been collected which can degrade crude oil (29% of total isolates), fluoranthene (33%), fluorene (20%), pyrene (7%), dibenzothiopene (6%), and phenantrene (5 %). Cultivable bacteria have been isolated mostly from the Sunda Kelapa samples, with fewer in those from Muara Baru and Tanjung Priok, respectively. Among these isolates, 5 isolates have the capability to degrade 5 types of PAH and ALCO 210. They were Alcanivorax sp. B-1084, Pseudomonas sp. D5-38b, Alcanivorax sp. TE-9, Bacillus sp. L41, Alcanivorax dieselolei strain B-5 clone 1.
Jakarta: LIPI Press, 2014
550 MRI 39:2 (2014)
Artikel Jurnal  Universitas Indonesia Library