FN Archimer Export Format PT J TI Variations du volume et des quotas en N et P d'Alexandrium tamarense (dinoflagellata) en culture continue limitante en nitrate OT Variations in volume and nutrient (N and P) content of the dinoflagellate Alexandrium tamarense in N-limited continuous culture BT AF MARSOT, P AS 1:; FF 1:; IF 0.662 TC 1 UR https://archimer.ifremer.fr/doc/00093/20463/18135.pdf LA French DT Article AB N-limited continuous growth of the dinoflagellate Alexandrium tamarense was performed by applying soft mixing conditions to the culture medium by means of air bubbling and slow rotation of a stirring bar. The cellular nitrate + nitrite and phosphate content and cell volume of Alexandrium tamarense were measured at different dilution rates from 0.05 to 0.37 d(-1). Cell volume varied from 11500 to 31000 mu m(3) between these extremes, indicating a significant positive correlation between cell volume and dilution rate. The analyses also reveal a strong interdependence of cell size and NO3- + NO2- cellular content, the latter increasing from 0.09 to 1.1 pmol cell(-1) with increases in cell size. The positive relationship between cell size, NO3- + NO2- cell content and dilution rate is discussed in terms of the implication of such parameters in the proliferation of this dinoflagellate in a natural environment. PY 1997 SO Oceanologica Acta SN 0399-1784 PU Gauthier-Villars VL 20 IS 4 UT A1997XU31400006 BP 639 EP 643 ID 20463 ER EF