The early trichromatic method of chlorophyll analysis featured the possibility of distinguishing abundance of chloroplastic pigments specific to phyla of algae in the population. The method was not successful however, because in natural populations there are major interferences due to pigments or their degradation products....
Yentsch, Charles S., and Clarice M. Yentsch. 1979. "Fluorescence spectral signatures: The characterization of phytoplankton populations by the use of excitation and emission spectra." Journal of Marine Research 37, (3). https://elischolar.library.yale.edu/journal_of_marine_research/1479