Fig. 1 AFrom: Using HPLC pigment analysis to investigate phytoplankton taxonomy: the importance of knowing your species Seasonal variation in phytoplankton biomass from microscopic analysis. B Seasonal variation in Chl a concentration measured by HPLC. C Seasonal variation in the concentration of marker pigments. 19-hexa 19′-Hexanoyloxyfucoxanthin; 19-but 19′-butanoyloxyfucoxanthin. D CHEMTAX results from the blind analysis: Group-specific contribution to the total Chl a. E CHEMTAX results from the directed analysis: Group specific contribution to the total Chl a Back to article page