Growth dynamics of marine Synechococcus spp. in the Gulf of Alaska

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19 Scopus citations


Vertical distribution of Synechococcus spp. varied seasonally, with cells evenly distributed in the mixed layer at the beginning of June, but concentrated in and below the pycnocline (40-60 m) in September. Experiments on strains isolated from the Gulf of Alaska indicate a duration of division of 10.5 h. The instantaneous growth rate was maximum in June at the surface (0.7 d-1), but much lower in September in the mixed layer (about 0.25 d-1) and lowest below the pycnocline (about 0.16 d-1). In June near the surface, the contribution of Synechococcus spp. to phytoplankton carbon and total primary production was 21% and 8%, respectively. The contribution was lower in September in the surface but increasing with depth reaching maximum values at and below the 1% light level (50-60 m depth) of 31 and 68%, respectively. -from Author

Original languageEnglish (US)
Pages (from-to)251-262
Number of pages12
JournalMarine Ecology Progress Series
Issue number2-3
StatePublished - Jan 1 1992
Externally publishedYes

ASJC Scopus subject areas

  • Ecology, Evolution, Behavior and Systematics
  • Aquatic Science
  • Ecology


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