Adapting the CHEMTAX Method for Assessing Phytoplankton Taxonomic Composition in Southeastern U.S. Estuaries

CHEMTAX is a matrix factorization program used to derive taxonomic structure of phytoplankton from photosynthetic pigment ratios. The program was originally developed from and applied to the analysis of oceanic phytoplankton assemblages. We found that application of the original CHEMTAX reference ma...

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Published in:Estuaries 2005-02, Vol.28 (1), p.160-172
Main Authors: Lewitus, Alan J., White, David L., Tymowski, Raphael G., Geesey, Mark E., Hymel, Sabrina N., Noble, Peter A.
Format: Article
Language:English
Subjects:
Algae
Animal and plant ecology
Animal, plant and microbial ecology
Bacillariophyceae
Biological and medical sciences
Biomass
Brackish
Brackish water ecosystems
Carbon
Chlorophylls
Diatoms
Estimated taxes
Estuaries
Fundamental and applied biological sciences. Psychology
Inlets
Marine
Phytoplankton
Pigments
Plankton
Synecology
Taxa
Taxonomy
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container_issue 1
container_start_page 160
container_title Estuaries
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creator Lewitus, Alan J.
White, David L.
Tymowski, Raphael G.
Geesey, Mark E.
Hymel, Sabrina N.
Noble, Peter A.
description CHEMTAX is a matrix factorization program used to derive taxonomic structure of phytoplankton from photosynthetic pigment ratios. The program was originally developed from and applied to the analysis of oceanic phytoplankton assemblages. We found that application of the original CHEMTAX reference matrix to southeastern United States estuarine systems produced inaccurate results, as verified by microscopy. Modification of the matrix, based primarily on the pigment ratios of 33 estuarine isolates, improved the predictive capabilities of CHEMTAX for our samples. Limitations of the method included an overestimation of diatom biomass (due to the inability to differentiate diatoms from taxa with chloroplasts derived from diatom endosymbionts, notably some dinoflagellates) and a tendency to exclude some raphidophyte species. In complement with microscopic verification, the method was shown to improve assessment of phytoplankton taxonomic composition.
doi_str_mv 10.1007/BF02732761
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source JSTOR Archival Journals and Primary Sources Collection; Springer Nature
subjects Algae
Animal and plant ecology
Animal, plant and microbial ecology
Bacillariophyceae
Biological and medical sciences
Biomass
Brackish
Brackish water ecosystems
Carbon
Chlorophylls
Diatoms
Estimated taxes
Estuaries
Fundamental and applied biological sciences. Psychology
Inlets
Marine
Phytoplankton
Pigments
Plankton
Synecology
Taxa
Taxonomy
title Adapting the CHEMTAX Method for Assessing Phytoplankton Taxonomic Composition in Southeastern U.S. Estuaries
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