Adapting the CHEMTAX method for assessing phytoplankton taxonomic composition in Southeastern U.S. estuaries
| Autor: | Peter A. Noble, Sabrina N. Hymel, Alan J. Lewitus, Raphael G. Tymowski, David White, Mark E. Geesey |
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| Rok vydání: | 2005 |
| Předmět: |
geography
Biomass (ecology) geography.geographical_feature_category biology Ecology Estuary Photosynthetic pigment Aquatic Science Raphidophyte Plankton biology.organism_classification chemistry.chemical_compound Taxon Diatom chemistry Phytoplankton Environmental Chemistry General Environmental Science |
| Zdroj: | Estuaries. 28:160-172 |
| ISSN: | 0160-8347 |
| DOI: | 10.1007/bf02732761 |
| Popis: | CHEMTAX is a matrix factorization program used to derive taxonomic structure of phytoplankton from photosynthetic pigment vitios. 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 overstimation 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. |
| Databáze: | OpenAIRE |
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