The effect of elevated levels of phaeophytin in natural water on variable fluorescence measured from phytoplankton |
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| Authors: | Fuchs, Eran Zimmerman, Richard C. Jaffe, Jules S. |
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| Affiliation: | Marine Physical Laboratories, Scripps Institution of Oceanography, 8820 Shellback Way, La Jolla, Ca 92093-0238 and 1 Moss Landing Marine Laboratories, 8272 Moss Landing Road, Moss Landing, Ca 95039, USA |
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| Abstract: | Variable fluorescence methods are becoming popular in studiesrelated to aquatic photosynthesis. In natural ocean water, phytoplanktonco-exist with their zooplankton and flagellate predators, viralparasites and the waste products of digested phytoplankton cellsthat contain phaeophytin (a chromo-phore produced by digestionof chlorophyll a). Fast repetition rate fluorometry, a techniquemainly applied in phytoplankton studies, was used to evaluateand quantify the effect of phaeophytin abundance in sea wateron variable fluorescence parameters: the photochemical quantumyield, |
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