Die Temperaturabhängigkeit des Wachstums von Phaeocystis pouchetii (Haptophyceae) in Batchkulturen

Abstract

Temperature dependent growth rates of Phaeocystis pouchetii (Haptophyceae) were investigated in 5-1 batch cultures. The algae had been isolated from the German Wadden Sea area off Sylt. Microscopic cell counts and fluorescense measurements yielded similar results. The growth of P. pouchetii reveals a typical optimum curve between 7 °C and 20 °C. Maximal growth rates, 3 divisions per day, were obtained at 15 °C. At 5 °C the algae cultures survived, but multiplication of the cells almost ceased. Results of the culture experiments correspond with observations made on Phaeocystis blooms at the German North Sea coast. © 1985 Biologische Anstalt Helgoland.