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The accumulation of phytoplankton biomass in recurring summer dinoflagellate blooms of Chesapeake Bay is accompanied by large pools of dissolved organic matter (DOM). Two fractions of the DOM, free amino acids (DFAA) and monosaccharides (MONO), were measured at 3 h intervals in mixed species dinoflagellate blooms (Katodinium rotundatum, Gymnodinium spp.) and related to productivity, biomass and photoperiod...
Protein hydrolysis and subsequent peptide production appear to be the links between degradation of protein and production of free amino acids in the marine environment. This model has not yet been fully demonstrated because neither presence of peptides nor peptide hydrolysis has been directly measured in seawater or sediments.Fluorescent Lucifer Yellow (LYA)-derivatives of several peptides were synthesized...
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