Summer Phytoplankton community Structure in the Kuroshio Current-related Upwelling Northeast of Taiwan

  • Author(s): Yuh-Ling Lee Chen
  • DOI: 10.3319/TAO.1992.3.3.305(KEEP)
  • Keywords:
  • Citation: Lee Chen, Y.-L., 1992: Summer Phytoplankton community Structure in the Kuroshio Current-related Upwelling Northeast of Taiwan. Terr. Atmos. Ocean. Sci., 3, 305-320, doi: 10.3319/TAO.1992.3.3.305(KEEP)
Abstract

Observations of chlorophyll a concentration and phytoplankton assemblage were conducted during the summer of 1990 on 19 stations along two parallel transects across the Kuroshio Current front off the northeastern coast of Taiwan. The 0-100m seawater chlorophyll a content varied between 8.63 and 41.80mg·m-2 in August and between 8.88 and 94.70mg·m-2 in September. High nitrate content, low temperature, high salinity and high chlorophyll a concentrations were observed at the stations along the front. The vertical distribution of chlorophyll a was characterized by a shallower subsurface maximum of between 0 and 25m in the stations associated with the upwelling, while those of the non-upwelling stations were between 50-75m. Diatoms, Skeletonema costatum in August and Thalassionema nitzschioids in September, dominated the upwelled surface water because significant amounts of nutrients are supplied to surface or near-surface waters.

 
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