Temporal variations in diatom abundance and downward vertical flux in the oligotrophic North Pacific gyre

  title={Temporal variations in diatom abundance and downward vertical flux in the oligotrophic North Pacific gyre},
  author={R. Scharek and M. Latasa and D. Karl and R. Bidigare},
Abstract The abundance of diatoms in the water column and the downward vertical flux of diatom cells from the euphotic zone were investigated during a time series of 11 monthly cruises (June 1994–July 1995) to Station ALOHA (22°45′N, 158°00′W) as one component of the Hawaii Ocean Time-series (HOT) Program. The diatom community was studied using light microscopy and by high-performance liquid chromatographic (HPLC) pigment analyses. Distinct diatom assemblages were found in the mixed-layer and… Expand

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