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RELATIONSHIP BETWEEN THE NUMBER OF DIVIDING AND NONDIVIDING CELLS OF CYANOBACTERIA IN NORTH ATLANTIC PICOPLANKTON 1
Author(s) -
Li William K. W.,
Dickie Paul M.
Publication year - 1991
Publication title -
journal of phycology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.85
H-Index - 127
eISSN - 1529-8817
pISSN - 0022-3646
DOI - 10.1111/j.0022-3646.1991.00559.x
Subject(s) - picoplankton , biology , synechococcus , cyanobacteria , population , abundance (ecology) , range (aeronautics) , eutrophication , growth rate , ecology , botany , nutrient , genetics , demography , bacteria , materials science , geometry , mathematics , sociology , composite material
In the North Atlantic over a wide geographic region that includes various oceanic regimes and a temperature range from 10 to 22° C, an increase in the number of nondividing Synechococcus cells (X) was generally accompanied by a greater‐than‐proportional increase in the number of dividing cells (Y). As a result, the fraction of dividing cells (FDC = Y · (Y + X) −1 ) was positively related to population size (Y + X). Recognizing that FDC is generally greater in a rapidly growing population than in a slowly growing one, our empirical finding implies a positive correlation between specific growth rate and standing stock for Synechococcus. One notable exception occurred during winter (T < 5°C) in a eutrophic coastal embayment when a decrease in cell abundance was not matched by a decrease in FDC.