Calcareous Nannoplankton (marine algae) Analysis in Subsurface Sediments of Andaman Sea

2017 
Andaman Sea in the Indo-Pacific Warm Pool (IPWP) is influenced by Indo-Australia monsoon winds. Marine sediment cores in this area, BS36 (06°55’50.8”N; 96°07’28.51”E; ; Water depth 1147.1 meters) were acquired by Geomarin III research vessel andanalysed its morphology for nannoplankton occurences. Results from qualitative identification on marine sediment core in Andaman Sea obtained 11 genus of nannoplankton marine algae in this area. Dominated genus discovered in this site is Gephyrocapsa , Emiliania , and Helicosphaera . Although this research is qualitative and preliminary study phase; however, this reference of modern nannoplankton taxonomy and features using Scanning Electron Microscope (SEM) would enhance marine algae biodiversity along Andaman Sea of Indonesian waters Keywords: Nannoplankton, morphology, sediment core, taxonomy, Andaman Sea Kawasan Laut Andaman terletak di wilayah kolam panas Indo-Pasifik sangat dipengaruhi oleh angin musim Indo-Australia. Conto inti sedimen laut di wilayah BS 36 (06°55’50.8” Utara; 96°7’28.51” Timur; kedalaman laut 1147,1 meter) diambil menggunakan wahana kapal riset Geomarin III dan dianalisis morfologi nanoplankton yang ditemukan di wilayah ini. Hasil dari pemerian kualitatif dari conto sedimen inti di Laut Andaman menghasilkan 11 genus nanoplankton sebagai alga laut yang dapat ditemukan pada lokasi ini. Genus yang sangat menonjol di satu lokasi titik pengambilan conto sedimen inti yaitu Gephyrocapsa, Emiliania, dan Helicosphaera. Meskipun kajian ini masih bersifat kualitatif dan tahap studi awal; namun acuan tentang taksonomi nanoplankton modern dan kenampakan dari Scanning Electron Microscope (SEM) akan memperkaya biodivesitas alga laut di sepanjang Laut Andaman dari perairan Indonesia. Kata Kunci: Nanoplankton, morfologi, conto sedimen inti, taxonomi, Laut Andaman
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