Four excitation-emission matrices showing fluorescence from different sources of dissolved organic matter common to the Sacramento-San Joaquin Delta (California, USA): A, peat soil (euic, thermic Typic Medisaprists); B, Rice (Oryza sativa); C, Cattail (Typha spp.); and D, Algae (Thalassiosira weissflogii). Note, the presence or absence of fluorescence peaks, intensity of fluorescence response, changes in the ratios of excitation-emission pairs, and shifts in peak maxima have all been shown to provide information about DOM character and origin.
Four excitation-emission matrices showing fluorescence from different sources of dissolved organic matter common to the Sacramento-San Joaquin Delta (California, USA): A, peat soil (euic, thermic Typic Medisaprists); B, Rice (Oryza sativa); C, Cattail (Typha spp.); and D, Algae (Thalassiosira weissflogii). Note, the presence or absence of fluorescence peaks, intensity of fluorescence response, changes in the ratios of excitation-emission pairs, and shifts in peak maxima have all been shown to provide information about DOM character and origin.