Distribution of recent ostracoda in offshore sediment of the south China sea

Ramlan Omar, N. F. Noraswana

Research output: Contribution to journalArticle

Abstract

A study on the distribution of Recent Ostracoda in offshore sediment was carried out around the South China Sea. A total of 30 sediment samples were taken from the sampling stations between latitude 1°48’and 7°25’N and longitude 102°09’ and 105°16’E. From this study, 79 species of ostracods belonging to 16 families and 44 genera were identified. The dominant species was Foveoleberis cypraeoides with 937 individuals obtained. There were 13 to 43 species in total. Diversity Index, H(s), was in the range of 2.1 to 3.3, whereas the dominance values were between 4.4 and 14.7%. Several environmental parameters were measured including depth, temperature and salinity. The range values for each of these parameters are 13-72 m, 25.24-30.06°C and 27.74-34.91 ppt, respectively. The sediment texture in this study area can be categorized as sand, sandy mud, clayey mud, silty mud, silty clay, clayey sand, clayey silt and silty sand. The observations revealed that abundance and diversity of ostracod appeared to be principally controlled by depth. Two faunal assemblages were identified in terms of faunal composition, namely, shallow water (Hemikrithe orientalis, Neomonoceratina iniqua, Stigmatocythere indica, Cytherelloidea leroyi and Neocytheretta snellii) and deep water (Paracypris sp., Alataconcha pterogona, Bythocytheropteron alatum, Keijella paucipunctata and Actinocythereis scutigera). A comparative analysis showed a high degree resemblance between the study area and south-eastern Malay Peninsula (the South China Sea).

Original languageEnglish
Pages (from-to)433-444
Number of pages12
JournalPertanika Journal of Science and Technology
Volume22
Issue number2
Publication statusPublished - 2014

Fingerprint

Crustacea
Ostracoda
South China Sea
Oceans and Seas
China
Sediments
mud
Sand
sand
ostracod
sediments
Scutigera
sediment
Water
Silt
silty clay
Malaysia
Salinity
longitude
diversity index

Keywords

  • Abundance
  • Assemblages
  • Depth
  • Diversity
  • Recent ostracoda

ASJC Scopus subject areas

  • Agricultural and Biological Sciences(all)
  • Chemical Engineering(all)
  • Computer Science(all)
  • Environmental Science(all)

Cite this

Distribution of recent ostracoda in offshore sediment of the south China sea. / Omar, Ramlan; Noraswana, N. F.

In: Pertanika Journal of Science and Technology, Vol. 22, No. 2, 2014, p. 433-444.

Research output: Contribution to journalArticle

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