Garuda - Garba Rujukan Digital

Rubiman Rubiman

Unknown Affiliation

Author-ID : 2890552

Biochemistry, Genetics & Molecular Biology Decision Sciences, Operations Research & Management Library & Information Science

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BENTHIC FORAMINIFERAL ASSEMBLAGES IN NATUNA ISLANDS Suhartati M. Natsir; M. Subkhan; Rubiman Rubiman; Singgih P.A. Wibowo
Jurnal Ilmu dan Teknologi Kelautan Tropis Vol. 3 No. 2 (2011): Elektronik Jurnal Ilmu dan Teknologi Kelautan Tropis
Publisher : Department of Marine Science and Technology, Faculty of Fisheries and Marine Science, IPB University

Natuna Islands cluster consisting of large and small islands which a very diverse ecosystems are occurred, including mangrove, seagrass and coral reefs. These waters can be a conducive habitat for various marine organisms, including foraminifera that can live in all types of waters. Collected foraminifera from a site reflect the relationships between species that are affected by ecological factors and the ability of these organisms adapt to their environment. These organisms are also used in the petroleum and mining line, and studied in the micropaleontology and palaeoecology. Therefore, the data on foraminifera in a marine community, including the waters of Natuna Islands are very important to support the fields. Sampling of this study was conducted in April 2011 in the waters off the coast until the ocean waters covering Bunguran, Subi Besar and Laut Islands. The benthic foraminifera that was collected as abundant in these three waters is symbiont bearing foraminifera, namely Amphistegina lessonii.Keywords: Assemblage, foraminifera, benthic and Natuna

THE DISTRIBUTION OF RECENT BENTHIC FORAMINIFERA IN THE ARAFURA SEA Suhartati M. Natsir; Rubiman Rubiman
Jurnal Ilmu dan Teknologi Kelautan Tropis Vol. 2 No. 2 (2010): Elektronik Jurnal Ilmu dan Teknologi Kelautan Tropis
Publisher : Department of Marine Science and Technology, Faculty of Fisheries and Marine Science, IPB University

Arafura Sea consists of shallow waters and located in the Southern of Papua to the north coast of Australia. The waters is vegetated by shallow-water ecosytems such as mangrove, seagrass bed, and coral reefs. The Arafura continental shelf is predominated by sediment from late Paleozoic, Mesozoic to Cenozoic and underlain by granitic basement. Foraminifera is a single cell microorgainsm, has pseudopodia with high level of diversity. Foraminifera dwells in every level of sea depth, from estuary to the deep sea. However, a certain species commonly dwells in the specific profundity. The aim of the study was to recognize the distribution of benthic foraminifera in the waters of Arafura Sea and it relation with the environmental characteristics. As many as 11 sediment samples was collected in May 2010 from the water of Arafura Sea using a box core with capcity of 0,3 m3. Laboratory analyses on the colleted samples were performed to determine the type of sediments and identify the benthic foraminifera, and to determine the abundance of each samples. The number of species found from the collected sediments were 37 species consisting of 29 genera of which most of them were member of Suborder Rotaliina and many of them belong to Suborder Miliolina and Textulariina. The most common species of the sampling sites were Ammonia beccarii and Pseudorotalia schroeteriana. The Arafura Sea commonly recognized as shallow waters, open seas, with current speed of midium to high. The predominant sediment type of the waters is sandy mud and little of clay.Keywords: distribution, benthic foraminifera, sediment and Arafura

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