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

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18 Scopus citations

Abstract

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
Volume83
Issue number2-3
DOIs
StatePublished - Jan 1 1992
Externally publishedYes

ASJC Scopus subject areas

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

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