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JOURNAL OF PLANKTON RESEARCH | VOLUME 16 | NUMBER 10 | PAGES 1315-1327 | 1994
© Oxford University Press

research-article

Spectral fluorescence signatures in the characterization of phytoplankton community composition

L. Poryvkina, S. Babichenko, S. Kaitala1, H. Kuosa2 and A. Shalapjonok3

Institute of Ecology, Paldiski mnt. 1 200001 Tallinn, Estonia 1Section of Limnology Viikki, Box 27, 00014 Helsinki University 2Tavrminne Zoological Station 10900 Hanko, Finland 3Institute of Biology of Southern Seas, Nachimova 2 335000 Sevastopol, Ukraine

Received on June 30, 1993; accepted on May 19, 1994 Fluorescence spectral signatures from 28 algal cultures are described.The cultures are split into four groups according to their accessory pigments. Phycocyanin and phycoerythrin, characteristic pigments of cyanobacteria, form groups I and II. The characteristic pigment found in group III is chlorophyll b (green and rasinophyte algae) and in group IV it is chlorophyll c (diatoms, dinophytes and some other algae).This preliminary catalogue of spectral signatures was used to characterize five natural phytoplankton communities from brackish water environments as a comparison with phytoplankton species found in the samples. Accessory pigments such as phycocyanin and phycoerythrin, characterizing groups I and II, can be used for identification without confusion. Distinguishing between groups III and IV is more complicated, because their accessory pigments do not have their own fluorescence. These groups can be characterized by increased fluorescence of chlorophyll a induced by energy excited through chlorophyll b and c. The possibilities of applying the spectral fluorescence signatures approach to the characterization of natural communities are discussed.


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