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  • Proceedings of the 3rd Technical Seminar on Marine Fishery Resources Survey in the South China Sea, Area III: Western Philippines
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  •   Beranda
  • 01 SEAFDEC Publications
  • 11 Conference Proceedings
  • Secretariat
  • Proceedings of the 3rd Technical Seminar on Marine Fishery Resources Survey in the South China Sea, Area III: Western Philippines
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Species composition, abundance and distribution of phytoplankton in the thermocline layer in the South China Sea, Area III: Western Philippines

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SCS_FRS3_15.pdf (434.0Kb)
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Date
2000
Author
Boonyapiwat, Sopana
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424
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Abstract
Phytoplankton density, taxonomic composition and distribution in the thermocline layer were investigated to compare with those in the surface layer of 31 stations in the western Philippines during 17 April – 9 May 1998. The samples were collected from surface, thermocline depth (the beginning of thermocline), and chlorophyll maximum depth. In this study, thermocline depth and chlorophyll maximum depth were included in the thermocline layer. Three hundred and thirty-eight taxa, composed of 2 species of blue green alga, 144 species of diatoms and 168 species of dinoflagellates were identified. The occurrence of the species in each sampling depth were recorded. Phytoplankton densities at chlorophyll maximum depth were mostly highest among the sampling depths observed. The most abundance was 20,683 cells/l found at thermocline depth of station 24 due to the blooms of many diatom species. Oscillatoria (Trichodesmium) erythraea and Chaetoceros lorenzianus were dominant from surface through chlorophyll maximum depth. Seven species of diatoms presented as the dominant species only in the thermocline layer. The toxic dinoflagellates were found in low cell densities. Diversity and evenness indices of phytoplankton at chlorophyll maximum depth were high.
URI
http://hdl.handle.net/20.500.12066/4353
Suggested Citation
Boonyapiwat, S. (2000). Species composition, abundance and distribution of phytoplankton in the thermocline layer in the South China Sea, Area III: Western Philippines. In Proceedings of the Third Technical Seminar on Marine Fishery Resources Survey in the South China Sea, Area III: Western Philippines, 13-15 July 1999 (pp. 197-216). Bangkok, Thailand: Secretariat, Southeast Asian Fisheries Development Center.
Subject
dominant species ASFA; abundance ASFA; population density ASFA; phytoplankton ASFA; thermocline ASFA; South China Sea; Philippines; Dinoflagellata; Bacillariophyceae
Koleksi
  • Proceedings of the 3rd Technical Seminar on Marine Fishery Resources Survey in the South China Sea, Area III: Western Philippines [25]

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