Interactions of light and inorganic nitrogen in controlling nitrogen uptake in the sea
JJ MacIsaac, RC Dugdale - Deep Sea Research and Oceanographic …, 1972 - Elsevier
The uptake of ammonium and nitrate in natural populations of marine phytoplankton is light
dependent and often can be described adequately by the Michaelis-Menten equation. The
half-saturation constant for light intensity in nitrate and ammonium uptake is found to be from
1 to 14% of surface light intensity, an intensity range occurring near the bottom of the
euphotic zone. Since the uptake of these compounds as a function of substrate
concentration is also described by the same equation, many vertical profiles of nitrate and …
dependent and often can be described adequately by the Michaelis-Menten equation. The
half-saturation constant for light intensity in nitrate and ammonium uptake is found to be from
1 to 14% of surface light intensity, an intensity range occurring near the bottom of the
euphotic zone. Since the uptake of these compounds as a function of substrate
concentration is also described by the same equation, many vertical profiles of nitrate and …