The effects of ammonium-nitrogen concentration on the rates of growth, photosynthesis and ammonium-nitrogen uptake of Gracilaria edulis (Rhodophyta) under different light conditions

Abstract

This study was carried out in order to understand more about the physiology of Gracilaria edulis. In this study, (i) ammonium-nitrogen uptake rate (ii) gross photosynthetic rate, net photosynthetic rate and respiration rate and (iii) growth rate were determined in relation to ammonium-nitrogen concentration, culture period, and light condition.