The Cell Division Rates of Some Marine Phytoplankters as a Function of Light and Temperature

摘要: An apparatus is described for exposing phytoplankton cultures to 64 different combinations of light and temperature. The was a known spectral energy resembling sunlight after passage through few metres clear coastal sea water measured in the units cals/cm2/min (langlies/min or ly/min). temperature range used varied each experiment, illumination from about 0.005 0.4 ly/min, latter being equivalent bright summer at depth only sea.The growth five bacteria-free cultures, Dunaliella tertiolecta, Amphidinium carteri, Monochrysis lutheri, Skeletonema costatum Thalassiosira nordenskioldii followed period 3–5 days using cycle 16 hr 8 hr darkness every 24 hr. Growth by counting cell numbers rate constants division were evaluated standard times.The resulting growth-response curves are reported discussed relation their ecological si...