Modeling Growth of Coccolithophore Emiliania huxleyi in Laboratory Culture
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Accession number;06A1016247
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| Title;Modeling Growth of Coccolithophore Emiliania huxleyi in Laboratory Culture |
| Author;
SODA SATOSHI
(Osaka Univ., Osaka, Jpn)
HASEGAWA HIROAKI
(Osaka Univ., Osaka, Jpn)
SEI KAZUNARI
(Osaka Univ., Osaka, Jpn)
IKE MICHIHIKO
(Osaka Univ., Osaka, Jpn)
FUJITA MASANORI
(Kochi National Coll. Of Technol., Kochi, Jpn)
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Journal Title;Kaiyo Kogaku Shinpojiumu (CD-ROM)
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Journal Code:S0108B
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ISSN:
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VOL.19th;NO.;PAGE.ROMBUNNO.15(2006)
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| Figure&Table&Reference;FIG.4, TBL.4, REF.18 |
| Pub. Country;Japan |
| Language;English |
| Abstract;A coccolithophorid, Emiliania huxleyi NIES-837, was cultivated at 20.DEG.C. in 200 ml of IMK-SP medium under an 18-h light / 6-h dark cycle. To compensate for experimental limitations, a mathematical model was developed to describe the behavior of E. huxleyi. The specific growth rate of E. huxleyi was expressed as a function of phosphate, nitrate, and dissolved inorganic carbon concentrations, and light intensity. The estimated ratio of calcification/photosynthesis was 0.312. Simulation results suggest that E. huxleyi fixed carbon as 5 mM organic tissues and 1 mM CaCO3 during 25 days, until 40 .MU.M phosphate was depleted. The coccoliths' element contents were ranked as Ca > Mg > Fe > Sr .GEQ. Mn > Zn. Respective ratios of alkaline earth elements Mg and Sr to Ca in coccoliths were stable at 0.18.+-.0.07 and 0.0024.+-.0.008. (author abst.) |
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