Changes in the polysaccharide matrix of calcareous green algae during growth

The organic matrix of three species of calcareous green algae (family Caulerpales, order Udoteaceae was analysed during different growth stages for its carbohydrate content. In all cases investigated a decrease with age in the relative content of structural polysaccharides paralleled by an increase in reserve polymers was observed. A dynamic carbonate deposition model is suggested based on consideration of the carbohydrate composition.