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Diatom sinking fluxes at Sites MT3-MT7 in the western Equatorial Pacific in 1999-2002 were studied in order to decipher the ecological relationships between the diatom fluxes and environmental conditi...ons such as water temperature and salinity. As a supplement for those studies, this paper contains the compiled data tables of diatom fluxes at Sites MT3-MT7 together with an outline of major results based on the flux data. Not only total diatom fluxes but also the relative abundances of some major diatoms reflected the spacial and temporal migrations of the water masses from the Western Pacific Warm Pool (WPWP) and the Equatorial Upwelling Region (EUR). For example, the high fluxes of Thalassiosira spp., Azpeitia spp. and Asteromphalus spp. were observed in the EUR with relatively low temperature (<28℃) and high salinity (>35.1). The abundances of those centric taxa may be indicative of the EUR. The correlation coefficient between total diatom fluxes and total radiolarian fluxes was significantly high at all sites. The flux ratios of radiolarian/diatoms were significantly lower than the data in the subarctic Pacific, and thus the significant contribution by both diatoms and radiolarians to biogenic opal is expected.show more
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MFSD32_2_p015